CN106932023B - Stress and deformation detection system in ice body and glacier movement evaluation system - Google Patents

Abstract

The embodiment of the invention provides an ice body internal stress deformation detection system and a glacier movement evaluation system. The system comprises a hexahedral frame, a pressure gauge unit, a deformation gauge unit and a computing device. The pressure gauge unit arranged on the surface of the frame is used for acquiring the main stress parameter of any point in the ice body, and the deformer unit arranged on the rest surface of the frame is used for acquiring the main strain parameter of any point in the ice body. The computing equipment is electrically connected with the pressure gauge unit and the deformation gauge unit respectively so as to estimate the movement of the glacier where the frame is located according to the main stress parameter and the main strain parameter. Therefore, the main stress parameter and the main strain parameter in the ice body are obtained, the stress condition in the ice body is deduced and analyzed according to the obtained parameter information data, and the trend of the glacier movement and the process of the internal pressure evolution are further obtained.

Description

Stress and deformation detection system in ice body and glacier movement evaluation system

technical field

The invention relates to the technical field of detection and measurement, in particular to a stress and deformation detection system in ice and a glacier movement evaluation system.

Background technique

Detecting the movement of glaciers is of great significance to the study of glaciers. As a special material, ice is very important to obtain and accurately describe the stress state and strain state at any point inside it during the geometric and mechanical analysis of glacier movement. In the process of monitoring and recreating the movement of glaciers, the distribution and variation of the deformation field of the ice body is an important analysis object and control index.

Because it is difficult to set a relatively constant reference point position on the glacier body, it is difficult to determine the three-dimensional position change of the traditional measuring rod (flower rod), and some detection systems have complex structures and cannot be used after simple assembly on site. Therefore, it is an urgent problem for those skilled in the art to provide a detection system that is easy to assemble on site and can obtain the stress and deformation inside the ice body.

Contents of the invention

In order to overcome the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a stress and deformation detection system in the ice body and a glacier movement evaluation system, which have a simple structure, can be assembled on site, and can measure and obtain any Based on the principal stress parameters and principal strain parameters of one point, the internal force of the ice body can be deduced and analyzed according to the detected data, and then the trend of glacier movement and the evolution process of internal pressure can be obtained.

The first preferred embodiment of the present invention provides a system for detecting stress and deformation in the ice body, the system includes a frame, a pressure gauge unit, a deformation gauge unit and a computing device;

The frame is a hexahedral structure;

The pressure gauge unit is arranged on the surface of the frame to obtain the principal stress parameters at any point inside the ice body;

The deformation gauge unit is arranged on the remaining surface of the frame to obtain the principal strain parameters at any point inside the ice body;

The pressure gauge unit and the deformation gauge unit are respectively electrically connected to the computing device, and the computing device calculates the main stress parameters collected by the pressure gauge unit and the principal strain parameters collected by the deformation gauge unit for the frame. Estimates of the movement of glaciers.

In a preferred embodiment of the present invention, the frame includes a first triangular surface group composed of three mutually perpendicular triangular surfaces, and a second triangular surface group composed of another three mutually perpendicular triangular surfaces.

In a preferred embodiment of the present invention, the pressure gauge unit includes three pressure gauges, and the three pressure gauges are respectively arranged on each triangular surface in the first triangular surface group.

In a preferred embodiment of the present invention, the deformation gauge unit includes three deformation gauges, and the three deformation gauges are respectively arranged on each triangular surface in the second triangular surface group.

In a preferred embodiment of the present invention, the system further includes a positioning unit,

The positioning unit is arranged on the frame, and the positioning unit is used to protect the frame and support the pressure gauge unit and deformation gauge unit;

The positioning unit includes a first positioning group, a second positioning group and a third positioning group, and each positioning group includes a positioning circle, a bubble level and an electronic goniometer;

Both the bubble level and the electronic goniometer are arranged on the positioning circle, the bubble level is used to measure the levelness of the position of the positioning circle, and the electronic goniometer is used to measure the system mobile information.

In a preferred embodiment of the present invention, the first positioning group is arranged on a first plane, and the second positioning group and the third positioning group are respectively arranged on a second plane and a third plane, wherein the The first triangular surface group and the second triangular surface group are mirror-symmetrical to the first plane, and the first plane, the second plane and the third plane are perpendicular to each other.

In a preferred embodiment of the present invention, the system further includes a measuring piece, the measuring piece is a hollow structure, one end of the measuring piece is connected to any apex of the frame, the pressure gauge unit, the deformation gauge unit and the signal cable of the electronic goniometer passes through the measuring part of the hollow structure to be connected with the computing device.

In a preferred embodiment of the present invention, the other end of the measuring member is provided with a compass for measuring the direction and inclination of the frame when the frame moves.

In a preferred embodiment of the present invention, a scale is also provided on the surface of the measuring member, and the scale is used to measure the up and down movement of the frame relative to the surface of the ice body.

A preferred embodiment of the present invention also provides a glacier movement evaluation system, the system includes any one of the ice internal stress and deformation detection system described above.

Compared with the prior art, the present invention has the following beneficial effects:

A preferred embodiment of the present invention provides a system for detecting stress and deformation in ice and a system for evaluating glacier movement. The system includes a frame of hexahedron structure, pressure gauge unit, deformation gauge unit and computing equipment. Wherein, the pressure gauge unit is arranged on the surface of the frame for obtaining the principal stress parameters at any point inside the ice body; the deformation gauge unit is arranged on the remaining surface of the frame for obtaining Principal strain parameters at any point. The pressure gauge unit and the deformation gauge unit are respectively electrically connected to the computing device, and the computing device receives the principal stress parameters collected by the pressure gauge unit and the principal strain parameters collected by the deformation gauge unit. Thus, the system can be obtained by assembling the prefabricated components, and the principal stress parameters and principal strain parameters inside the ice body can be obtained through the system, so that Derivative analysis is carried out on the stress situation of the frame to estimate the movement of the glacier where the frame is located.

In order to make the above objects, features and advantages of the invention more comprehensible, the preferred embodiments of the present invention will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is one of the schematic block diagrams of a stress and deformation detection system in ice provided by a preferred embodiment of the present invention.

Fig. 2 is one of the structural schematic diagrams of the ice internal stress and deformation detection system provided by the preferred embodiment of the present invention.

FIG. 3 is a block schematic diagram of the computing device in FIG. 1 .

Fig. 4 is the second structural schematic diagram of the stress and deformation detection system in the ice body provided by the preferred embodiment of the present invention.

Fig. 5 is the second schematic block diagram of the stress and deformation detection system in the ice body provided by the preferred embodiment of the present invention.

Fig. 6 is the third structural schematic diagram of the stress and deformation detection system in the ice body provided by the preferred embodiment of the present invention.

Icons: 10-stress and deformation detection system in ice; 100-frame; 101-first triangular surface; 102-second triangular surface; 103-third triangular surface; 104-fourth triangular surface; 105-fifth triangular surface; 106-sixth triangular surface; 110-first triangular surface group; 120-second triangular surface group; 200-pressure gauge unit; 201-pressure gauge; 300-deformation gauge unit; 301-deformation gauge; 400-computing device; 401-memory; 402-storage controller; 403-processor; 510-first positioning group; 511-positioning circle; 512-level bubble instrument; 513-electronic goniometer; end; 602-second end; 610-compass.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to systems or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Some embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Please refer to FIG. 1 . FIG. 1 is one of the schematic block diagrams of a stress and deformation detection system 10 in the ice body provided by a preferred embodiment of the present invention. The ice internal stress and deformation detection system 10 includes a pressure gauge unit 200 , a deformation gauge unit 300 and a computing device 400 . The pressure gauge unit 200 is used to obtain the principal stress parameter at any point inside the ice body, and the deformation gauge unit 300 is used to obtain the principal strain parameter at any point inside the ice body. The pressure gauge unit 200 and the strain gauge unit 300 are electrically connected to the computing device 400 respectively, and the computing device 400 estimates the motion of the glacier according to the data sent by the pressure gauge unit 200 and the strain gauge unit 300 .

Please refer to FIG. 2 . FIG. 2 is one of the structural schematic diagrams of a stress and deformation detection system 10 in ice provided by a preferred embodiment of the present invention. The ice internal stress and deformation detection system 10 also includes a frame 100 . Wherein, the frame 100 is a hexahedron structure. In this embodiment, the pressure gauge unit 200 is set on the surface of the frame 100 to obtain the principal stress parameters at any point inside the ice body, and the deformation gauge unit 300 is set on the remaining surface of the frame 100 to obtain the Principal strain parameters at any point inside the body. Thus, the main stress parameter and the main strain parameter of any point inside the ice body can be obtained through the measurement of the system, so as to estimate the movement of the glacier where the frame 100 is located.

In the implementation of this embodiment, the frame 100 may be composed of 9 metal (for example, steel) components.

In this embodiment, the frame 100 includes a first triangular surface group 110 and a second triangular surface group 120 . The first triangular surface group 110 includes a first triangular surface 101 , a second triangular surface 102 and a third triangular surface 103 , and the three triangular surfaces are perpendicular to each other.

Wherein, the triangular surfaces in the first triangular surface group 110 are all right-angled isosceles triangles. ∠BAC of the first triangular surface 101 is a right angle, ∠CAD of the second triangular surface 102 is a right angle, and ∠BAD of the third triangular surface 103 is a right angle.

The second triangular surface group 120 includes a fourth triangular surface 104 , a fifth triangular surface 105 and a sixth triangular surface 106 , and the above three triangular surfaces are perpendicular to each other.

Wherein, the triangular surfaces in the second triangular surface group 120 are all right-angled isosceles triangles. ∠BEC of the fourth triangular surface 104 is a right angle, ∠CED of the fifth triangular surface 105 is a right angle, and ∠BED of the sixth triangular surface 106 is a right angle.

In this embodiment, the pressure gauge unit 200 includes three pressure gauges 201 , and the three pressure gauges 201 are respectively arranged on each triangular surface in the first triangular surface group 110 to obtain principal stress parameters. Since two of the three triangular surfaces of the first triangular surface group 110 are perpendicular, it provides great convenience for analyzing principal stress parameters by using mechanics. Wherein, since the vibrating wire pressure gauge has the advantage of accurate readings, in the implementation of this embodiment, the pressure gauge 201 may be a vibrating wire pressure gauge.

In this embodiment, the strain gauge unit 300 includes three strain gauges 301 , and the three strain gauges 301 are respectively arranged on each triangular surface in the second triangular surface group 120 to obtain principal strain parameters. Since the three triangular surfaces of the second triangular surface group 120 are perpendicular to each other, it provides great convenience for analyzing the principal strain parameters by using kinematics. In the implementation of this embodiment, the strain gauge 301 may be a resistive strain gauge, which is a sensor that converts non-electrical physical quantities such as displacement, force, pressure, acceleration, and torque into resistance value changes.

Wherein, both the pressure gauge 201 and the deformation gauge 301 can be arranged at the center of the triangular surface, so as to measure the principal stress parameters and principal strain parameters more accurately.

Please refer to FIG. 3 , which is a schematic block diagram of the computing device 400 in FIG. 1 . The computing device 400 may be, but not limited to, a personal computer (personal computer, PC), a tablet computer, and the like. The computing device 400 includes a memory 401 , a storage controller 402 and a processor 403 . The components of the memory 401 , storage controller 402 and processor 403 are directly or indirectly electrically connected to realize data transmission or interaction.

Wherein, the memory 401 can be used to store the data sent by the pressure gauge unit 200 and the deformation gauge unit 300, and can also store an analysis system for analyzing the data, and the form of the analysis system in the memory 401 can be is software or firmware. The memory 401 may be, but not limited to, a random access memory (Random Access Memory, RAM), a read only memory (Read Only Memory, ROM) and the like. The processor 403 and other possible components can access the memory 401 under the control of the memory controller 402 .

The processor 403 may be an integrated circuit chip with signal processing capability. The aforementioned processor 403 may be a general processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), and the like.

It can be understood that the structure shown in FIG. 3 is only for illustration, and the computing device 400 may also include more or less components than those shown in FIG. 3 , or have a different configuration from that shown in FIG. 3 . Each component shown in FIG. 3 may be implemented by hardware, software or a combination thereof.

In this embodiment, the ice internal stress and deformation detection system 10 further includes a positioning unit. The positioning unit is arranged on the frame 100 , and the positioning unit is used to protect the frame 100 and support the pressure gauge unit 200 and the deformation gauge unit 300 .

Wherein, the positioning unit includes a first positioning group 510, a second positioning group and a third positioning group. Please refer to FIG. 4 . FIG. 4 is the second structural schematic diagram of the ice internal stress and deformation detection system 10 provided by a preferred embodiment of the present invention (only the first positioning group 510 is shown in the figure). The first positioning group 510 , the second positioning group and the third positioning group all include a positioning ring body 511 , a bubble level 512 and an electronic goniometer 513 .

The positioning ring body 511 is a ring structure and can be made of metal material (eg, stainless steel). The pressure gauge 201 or deformation gauge 301 can be fixed on the positioning ring body 511 through some fixing systems (for example, wire).

Both the bubble level 512 and the electronic goniometer 513 are arranged on the positioning ring body 511 . The bubble level 512 is used to measure the levelness of the location of the positioning ring body 511 , and the positioning ring body 511 can be placed in balance through the bubble level 512 .

Please refer to FIG. 5 . FIG. 5 is the second schematic block diagram of an ice internal stress and deformation detection system 10 provided by a preferred embodiment of the present invention. The electronic goniometer 513 is electrically connected to the computing device 400 . The electronic goniometer 513 is used to obtain movement (eg, translation, rotation) information of the frame 100 .

In this embodiment, the first positioning group 510 is arranged on a first plane, and the second positioning group and the third positioning group are respectively arranged on a second plane and a third plane. Wherein, the first triangular surface group 110 and the second triangular surface group 120 are mirror-symmetrical to the first plane, and the first plane, the second plane and the third plane are perpendicular to each other.

Please refer to FIG. 6 . FIG. 6 is the third structural schematic diagram of the ice internal stress and deformation detection system 10 provided by the preferred embodiment of the present invention. The ice internal stress and deformation detection system 10 also includes a measuring element 600 . The measuring piece 600 is a hollow structure, and the measuring piece 600 includes a first end 601 and a second end 602 . The first end 601 is connected to any apex of the frame 100, and the signal cables of the pressure gauge unit 200, the deformation gauge unit 300 and the electronic goniometer 513 pass through the measuring piece 600 of the hollow structure and the computing device 400 connections. By embedding the stress and deformation detection system 10 (excluding the computing device 400 ) in the ice body at different depths of the ice body, the computing device 400 obtains the three-dimensional motion characteristics at different depths inside the ice body, and at the same time obtains the The magnitude and direction of the principal stress and the magnitude and direction of the principal strain at any point in the interior, after analyzing the obtained data, the distribution law and variation characteristics of the principal stress and principal strain are obtained. At the same time, after the frame 100 is buried in the ice body, it can also be backfilled and frozen with in-situ ice chips, so as to reduce the interference of construction on the measurement results and accuracy.

In this embodiment, the second end 602 is provided with a compass 610 . In practical application, when the frame 100 is buried inside the ice body, the measuring member 600 is perpendicular to the surface of the ice body. The north needle 610 on the measuring part 600 is exposed to a certain height on the surface of the ice body, and the north needle 610 is used to measure the direction and inclination of the frame 100 when the frame 100 moves, so that the The three-dimensional motion features of the frame 100 are obtained.

In this embodiment, a scale is provided on the surface of the measuring member 600, and the scale is used to measure the up and down movement of the frame 100 relative to the surface of the ice body.

A preferred embodiment of the present invention also provides a glacier movement assessment system, which includes the above-mentioned stress and deformation detection system 10 in the ice body.

To sum up, the present invention provides a stress and deformation detection system in the ice body and a glacier movement evaluation system. The system includes a frame, a pressure gauge unit, a deformation gauge unit, and a computing device. Wherein, the frame is a hexahedral structure, the pressure gauge unit used to obtain the principal stress parameters at any point inside the ice body is arranged on the surface of the frame, and the deformation gauge unit used to obtain the principal strain parameters at any point inside the ice body is arranged on the remaining surfaces of the frame. The computing device is electrically connected to the pressure gauge unit and the deformation gauge unit respectively, to obtain the principal stress parameters collected by the pressure gauge unit and the principal strain parameters collected by the deformation gauge unit, and after calculation and derivation, the The principal stress state and principal strain state of the point are analyzed and supported by data for the geometric movement and force of the glacier.

In addition, the system can also be obtained by assembling individual frames, pressure gauge units, deformation gauge units and computing equipment during use, which makes the system more adaptable.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. An ice body internal stress deformation detection system is characterized by comprising a frame, a pressure gauge unit, a deformer unit and a computing device;

the frame is of a hexahedral structure;

the pressure gauge unit is arranged on the surface of the frame to acquire main stress parameters of any point in the ice body;

the deformation meter unit is arranged on the rest surface of the frame to obtain a main strain parameter of any point in the ice body;

the pressure gauge unit and the strain gauge unit are respectively and electrically connected with the computing equipment, and the computing equipment estimates the movement of the glacier where the frame is located according to the main stress parameters collected by the pressure gauge unit and the main strain parameters collected by the strain gauge unit;

wherein the frame comprises a first triangular surface group consisting of three mutually perpendicular triangular surfaces and a second triangular surface group consisting of three other mutually perpendicular triangular surfaces;

the system further comprises a positioning unit for positioning the object,

the positioning unit is arranged on the frame and used for protecting the frame and supporting the pressure gauge unit and the deformation meter unit;

the positioning unit comprises a first positioning group, a second positioning group and a third positioning group, and each positioning group comprises a positioning ring body, a leveling bubble instrument and an electronic goniometer;

the leveling bubble instrument and the electronic angle measuring instrument are both arranged on the positioning ring body, the leveling bubble instrument is used for measuring the levelness of the position of the positioning ring body, and the electronic angle measuring instrument is used for measuring the movement information of the system;

the first positioning group is arranged on a first plane, and the second positioning group and the third positioning group are respectively arranged on a second plane and a third plane, wherein the first triangular surface group and the second triangular surface group are symmetrical relative to the first plane mirror, and the first plane, the second plane and the third plane are vertical to each other in pairs.

2. The system of claim 1,

the pressure gauge unit includes three pressure gauges respectively disposed on the respective triangular surfaces of the first triangular surface group.

3. The system of claim 2,

the strain gauge unit includes three strain gauges respectively provided on each of the triangular surfaces in the second triangular surface group.

4. The system of claim 1, further comprising a measuring member having a hollow structure, wherein one end of the measuring member is connected to any one of the vertices of the frame, and the signal cables of the pressure gauge unit, the strain gauge unit and the electronic goniometer are connected to the computing device through the hollow structure of the measuring member.

5. The system of claim 4, wherein the other end of the measuring member is provided with a north arrow for measuring the orientation and inclination of the frame when the frame is moved.

6. The system of claim 4, wherein the measuring member further comprises a scale on a surface thereof, the scale being used for measuring up and down movement of the frame relative to the surface of the ice body.

7. A glacier movement assessment system, characterized in that the system comprises an ice internal stress deformation detection system according to any one of claims 1-6.

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