CN114837726A - Sliding type wellhead protection system with ventilation function - Google Patents
Sliding type wellhead protection system with ventilation function Download PDFInfo
- Publication number
- CN114837726A CN114837726A CN202210411331.9A CN202210411331A CN114837726A CN 114837726 A CN114837726 A CN 114837726A CN 202210411331 A CN202210411331 A CN 202210411331A CN 114837726 A CN114837726 A CN 114837726A
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- Prior art keywords
- protection
- fan
- base
- protective cover
- exhaust
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/16—Shaft covers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/14—Fluid barriers or rock dusters made to work by, or at the same time as, shots or explosions
- E21F5/146—Rock dusters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
本发明提供一种带换气功能的滑动式井口防护系统，包括防护罩和底座，防护罩包括防护罩顶环以及防护罩底环，防护罩顶环中设置排风单元，防护罩支撑柱上端连接防护罩顶环，下端连接防护罩底环，防护罩支撑柱之间由防护罩连接杆连接，防护罩底环前端和后端分别固定防护罩轮组；底座包括镶嵌于竖井入口外地面的底座顶环和设置于井内并且外径与竖井内径相应的底座底环，防护罩下侧还设置用于产生旋转气流的射流风机单元，射流风机入口通过柔性风管与贯穿于防护罩的进气口连接。本发明通过设置卡扣，使防护罩固定；通过设置防护网，阻挡了爆破施工时产生的飞石；通过设置射流风机单元和排风扇，使灰尘能够快速排出，加快了施工进度。
The invention provides a sliding wellhead protection system with ventilation function, comprising a protective cover and a base, the protective cover includes a protective cover top ring and a protective cover bottom ring, an air exhaust unit is arranged in the protective cover top ring, and the upper end of the protective cover support column Connect the top ring of the protective cover, the lower end is connected to the bottom ring of the protective cover, the supporting columns of the protective cover are connected by the connecting rod of the protective cover, the front end and the rear end of the bottom ring of the protective cover are respectively fixed to the protective cover wheel group; The top ring of the base and the bottom ring of the base with the outer diameter corresponding to the inner diameter of the shaft are arranged in the well, and a jet fan unit for generating rotating airflow is also arranged on the lower side of the protective cover. port connection. The invention secures the protective cover by arranging the buckles; prevents the flying stones during blasting construction by arranging the protective net; arranging the jet fan unit and the exhaust fan, the dust can be quickly discharged and the construction progress is accelerated.
Description
Technical Field
The invention relates to the technical field of shaft construction, in particular to a sliding type wellhead protection system with an air exchange function.
Background
Along with the growth and development of the Chinese highway tunnel, the concentration of pollutants after long-distance ventilation can be effectively reduced by constructing the vertical shaft in the tunnel to convey or discharge air or intensively convey and discharge air, so that sectional ventilation of the vertical shaft becomes the choice of more and more long highway tunnels. In the construction of a vertical shaft, in order to prevent accidents such as falling of personnel, falling of debris such as stone slag and the like, hurting of people or damage of equipment and the like, a well cover part needs to be arranged or a well mouth needs to be completely closed, and the common method is to cover the well mouth by using a reinforcing mesh. The well lid is insecure as well head protector's fixed mode, take place to remove because the construction disturbance easily, the shaft is dug to build and is often adopted the blasting method excavation in addition, blast impact air current is great when the working face is nearer apart from the well head, open the sealing plate usually when the blasting in order to avoid sealing plate damage, control the flying stone distance through the shock attenuation blasting, still there is the blasting flying stone to hinder the risk of people and damage equipment, in addition, can produce a large amount of dust and poisonous and harmful gas in the well during the working face blasting, prior art lacks ventilation unit, need purchase ventilation unit alone.
For example, chinese utility model application No. CN202120801743.4 discloses a well head rail guard, include: the protective cover is used for covering the wellhead; the positioning units are uniformly distributed around the axial lead of the wellhead and comprise a connecting assembly, a pressing piece and a driving assembly; the connecting assembly is connected with the protective cover and is provided with a movable block capable of lifting; the pressing piece is positioned in the protective cover and can move along the horizontal direction; the driving assembly is arranged on the moving block, is connected with the pressing piece and is used for driving the pressing piece to move along the horizontal direction; the moving block can be lifted to enable the pressing piece to enter or exit the wellhead, and when the pressing piece is located in the wellhead, the horizontal movement of the pressing piece can enable the pressing piece to press the inner wall of the wellhead.
The above prior art still has the following technical problems: the protective cover is not firmly fixed and is easy to move in vibration; flying stones generated during blasting construction cannot be blocked, and workers are easily injured; lack ventilation unit, wait for the dust to scatter for a long time naturally, influence the construction progress.
Disclosure of Invention
In order to solve the problems, the invention provides a sliding type wellhead protection system with a ventilation function.
The sliding type wellhead protection system with the ventilation function comprises a protection cover and a base, wherein the protection cover comprises a protection cover top ring and a protection cover bottom ring, the size of the protection cover bottom ring corresponds to that of a shaft inlet, an exhaust unit used for generating updraft is arranged in the protection cover top ring, a plurality of protection cover supporting columns are uniformly arranged between the protection cover top ring and the protection cover bottom ring, the upper ends of the protection cover supporting columns are connected with the protection cover top ring, the lower ends of the protection cover supporting columns are connected with the protection cover bottom ring, the protection cover supporting columns are connected through protection cover connecting rods, the outer sides of the protection cover supporting columns are coated with a protection net, and protection cover wheel sets are respectively fixed at the front end and the rear end of the protection cover bottom ring; the base comprises a base top ring which is embedded in the ground outside the inlet of the vertical shaft and a base bottom ring which is arranged in the shaft and has the outer diameter corresponding to the inner diameter of the vertical shaft, the base top ring and the base bottom ring are connected through a plurality of vertically arranged base connecting columns, and a base track which is matched with the protective cover wheel set is laid on the ground and is fixedly connected with the upper surface of the base top ring;
the protection casing downside still sets up the efflux fan unit that is used for producing rotatory air current, efflux fan unit includes that both ends all suspend in midair in the efflux fan base of protection casing downside through the hoist cable, the one end of efflux fan base is connected to the hoist cable lower extreme, the hoist cable upper end is passed through the pulley and is connected with the hoist engine that sets up on the protection casing, first efflux fan and second efflux fan are parallel and reverse to be set up in the left end and the right-hand member at efflux fan base top, first efflux fan entry and second efflux fan entry are connected through flexible tuber pipe and the air inlet that runs through in the protection casing.
Furthermore, the air exhaust unit comprises an air exhaust unit top plate, an air exhaust hole arranged on the air exhaust unit top plate, an air exhaust unit top protecting net arranged in the air exhaust hole, an air exhaust unit hinge for rotatably connecting the protecting cover and the air exhaust unit and fixed at the left end of the top of the air exhaust unit top plate, an air exhaust unit lifting handle fixed at the right end of the top of the air exhaust unit top plate, an air exhaust fan connected to the bottom of the air exhaust unit top plate, and an air exhaust fan protecting cover fixed at the bottom of the air exhaust fan; the exhaust fan protection cover comprises an exhaust fan protection cover flange connected to the bottom of the exhaust fan, an exhaust fan protection cover central plate fixed to the middle of the exhaust fan protection cover flange through a plurality of exhaust fan protection cover connecting rods, and an exhaust fan protection net is arranged on the top of each exhaust fan protection cover connecting rod.
Furthermore, the flexible air pipe is connected with the sling in a sliding manner through a plurality of hanging rings arranged on one side of the flexible air pipe.
Furthermore, the flexible air pipe is a canvas flexible connection air pipe.
Furthermore, the air volume of the first jet flow fan is 0.15-0.3 times of that of the exhaust fan.
Furthermore, the air quantity of the second jet flow fan is 0.15-0.3 times of that of the exhaust fan.
Furthermore, a plurality of buckle holes used for fixing the protective cover are arranged on the base track.
Furthermore, a buckle used for being matched with the buckle hole is arranged on the outer side of the protective cover wheel set.
Further, the bottom of the protective cover is provided with a spray head for dust removal.
The sliding type wellhead protection system with the ventilation function has the advantages and effects that: the protective cover is fixed by arranging a buckle; through the arrangement of the protective net, flying stones generated during blasting construction are prevented; through setting up efflux fan unit and exhaust fan, make the dust discharge fast for the construction progress.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a sliding wellhead protection system with a ventilation function according to the present invention;
fig. 2 is a schematic perspective view of the air exhaust unit 4 in fig. 1;
fig. 3 is a schematic perspective view of the hood 4.7 of the exhaust fan in fig. 2.
The labels in the figure are 1-shield, 1.1-shield bottom ring, 1.2-shield support column, 1.3-shield top ring, 1.4-shield connecting rod, 1.5-shield wheel set, 2-base, 2.1-base top ring, 2.2-base bottom ring, 2.3-base connecting column, 2.4-base rail, 2.5-snap hole, 3-jet fan unit, 3.1-jet fan base, 3.2-first jet fan, 3.3-second jet fan, 3.4-flexible air pipe, 3.5-sling, 3.6-windlass, 3.7-pulley, 4-air exhaust unit, 4.1-air exhaust unit top plate, 4.2-air exhaust hole, 4.3-air exhaust unit hinge, 4.4-air exhaust unit handle, 4.5-air exhaust fan, 4.6-air exhaust unit top net protecting net, 4.7-exhaust fan shield, 4.71-exhaust fan shield flange, 4.72-exhaust fan shield central plate, 4.73-exhaust fan shield connecting rod, 4.74-exhaust fan guard net and 5-shaft.
Detailed Description
The following description will clearly and completely describe the embodiments of the sliding wellhead protection system with the ventilation function in combination with the attached drawings.
As shown in fig. 1, the sliding wellhead protection system with the ventilation function comprises a protection cover 1 and a base 2, wherein the protection cover 1 comprises a protection cover top ring 1.3 and a protection cover bottom ring 1.1 with the size corresponding to the size of an inlet of a shaft 5, an exhaust unit 4 for generating updraft is arranged in the protection cover top ring 1.3, a plurality of protection cover support columns 1.2 are uniformly arranged between the protection cover top ring 1.3 and the protection cover bottom ring 1.1, the upper ends of the protection cover support columns 1.2 are connected with the protection cover top ring 1.3, the lower ends of the protection cover support columns are connected with the protection cover bottom ring 1.1, the protection cover support columns 1.2 are connected by a protection cover connecting rod 1.4, a protection net (not shown) is coated outside the protection cover support columns 1.2, and the front end and the rear end of the protection cover bottom ring 1.1 are respectively used for fixing a wheel set protection cover 1.5; the base 2 comprises a base top ring 2.1 embedded on the ground outside the inlet of the vertical shaft 5 and a base bottom ring 2.2 arranged in the shaft and having an outer diameter corresponding to the inner diameter of the vertical shaft 5, the base top ring 2.1 and the base bottom ring 2.2 are connected through a plurality of vertically arranged base connecting columns 2.3, and a base track 2.4 matched with the protective cover wheel set 1.5 is laid on the ground and fixedly connected with the upper surface of the base top ring 2.1;
the lower side of the protective cover 1 is also provided with a jet fan unit 3 used for generating rotating airflow, the jet fan unit 3 comprises jet fan bases 3.1, two ends of which are suspended on the lower side of the protective cover 1 through slings 3.5, the lower ends of the slings 3.5 are connected with one ends of the jet fan bases 3.1, the upper ends of the slings 3.5 are connected with a winch 3.6 arranged on the protective cover 1 through pulleys 3.7, a first jet fan 3.2 and a second jet fan 3.3 are arranged at the left end and the right end of the top of the jet fan base 3.1 in parallel and in reverse directions, and an inlet of the first jet fan 3.2 and an inlet of the second jet fan 3.3 are connected with an air inlet (not shown) penetrating through the protective cover 1 through a flexible air pipe 3.4.
Further, as shown in fig. 2 and 3, the exhaust unit 4 includes an exhaust unit top plate 4.1, an exhaust hole 4.2 disposed on the exhaust unit top plate 4.1, an exhaust unit top protecting net 4.6 disposed in the exhaust hole 4.2, an exhaust unit hinge 4.3 for rotatably connecting the protecting cover 1 and the exhaust unit 4 is fixed at the left end of the top of the exhaust unit top plate 4.1, an exhaust unit handle 4.4 fixed at the right end of the top of the exhaust unit top plate 4.1, an exhaust fan 4.5 connected to the bottom of the exhaust unit top plate 4.1, and an exhaust fan protecting cover 4.7 fixed at the bottom of the exhaust fan 4.5; the exhaust fan shield 4.7 comprises an exhaust fan shield flange 4.71 connected to the bottom of the exhaust fan 4.5, an exhaust fan shield central plate 4.72 fixed to the middle of the exhaust fan shield flange 4.71 through a plurality of exhaust fan shield connecting rods 4.73, and an exhaust fan shield net 4.74 arranged at the top of the exhaust fan shield connecting rods 4.73.
Further, the flexible air duct 3.4 is slidably connected with the sling 3.5 through a plurality of hanging rings (not shown) arranged at one side of the flexible air duct 3.4.
Further, the flexible air pipe 3.4 is a canvas flexible connection air pipe.
Furthermore, the air volume of the first jet flow fan 3.2 is 0.15-0.3 times of the air volume of the exhaust fan 4.5.
Furthermore, the air volume of the second jet flow fan 3.3 is 0.15-0.3 times of the air volume of the exhaust fan 4.5.
Further, a plurality of fastening holes 2.5 for fixing the protective cover 1 are arranged on the base rail 2.4.
Furthermore, a buckle (not shown) used for matching with the buckle hole 2.5 is arranged on the outer side of the protective cover wheel set 1.5.
Further, a spray head (not shown) for removing dust is arranged at the bottom of the protective cover 1.
The use method of the sliding wellhead protection system with the ventilation function is briefly described in the following with the attached drawings of the specification:
before blasting excavation, push away the protection casing 1 to the shaft 5 top through protection casing wheelset 1.5 and base track 2.4 to buckle and buckle hole 2.5 through the setting of protection casing wheelset 1.5 outside link together protection casing 1 and base track 2.4.
After blasting excavation, the jet fan unit 3 is placed at the bottom of the vertical shaft 5 through the sling 3.5 and the winch 3.6, the first jet fan 3.2, the second jet fan 3.3 and the exhaust fan 4.5 are started, the first jet fan 3.2 and the second jet fan 3.3 generate rotating airflow, the exhaust fan 4.5 generates updraft, artificial tornado is formed under the combined action of the rotating airflow and the updraft, and dust in the vertical shaft 5 is quickly discharged.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents, and improvements can be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The sliding type wellhead protection system with the ventilation function is characterized by comprising a protection cover (1) and a base (2), wherein the protection cover (1) comprises a protection cover top ring (1.3) and a protection cover bottom ring (1.1) with the size corresponding to the size of an inlet of a vertical shaft (5), an air exhaust unit (4) is arranged in the protection cover top ring (1.3), a plurality of protection cover supporting columns (1.2) are uniformly arranged between the protection cover top ring (1.3) and the protection cover bottom ring (1.1), the upper ends of the protection cover supporting columns (1.2) are connected with the protection cover top ring (1.3), the lower ends of the protection cover supporting columns (1.1) are connected with the protection cover bottom ring (1.1), the protection cover supporting columns (1.2) are connected through connecting rods (1.4), the outer sides of the protection cover supporting columns (1.2) are coated with a protection net, and the front end and the rear end of the protection cover bottom ring (1.1) are respectively fixed with a protection cover wheel set (1.5); the base (2) comprises a base top ring (2.1) which is embedded in the ground outside an inlet of the vertical shaft (5) and a base bottom ring (2.2) which is arranged in the shaft and has an outer diameter corresponding to the inner diameter of the vertical shaft (5), the base top ring (2.1) is connected with the base bottom ring (2.2) through a plurality of vertically arranged base connecting columns (2.3), and a base track (2.4) matched with the protective cover wheel set (1.5) is laid on the ground and fixedly connected with the upper surface of the base top ring (2.1); protection casing (1) downside sets up efflux fan unit (3), efflux fan unit (3) all suspend efflux fan base (3.1) of downside in midair through hoist cable (3.5) including both ends, the one end of efflux fan base (3.1) is connected to hoist cable (3.5) lower extreme, hoist engine (3.6) that hoist cable (3.5) upper end was passed through pulley (3.7) and was set up on protection casing (1) are connected, first efflux fan (3.2) and second efflux fan (3.3) are parallel and reverse to be set up in the left end and the right-hand member at efflux fan base (3.1) top, first efflux fan (3.2) entry and second efflux fan (3.3) entry are connected through flexible tuber pipe (3.4) and the air inlet that runs through in protection casing (1).
2. The sliding type wellhead protection system with the ventilation function according to claim 1, characterized in that the exhaust unit (4) comprises an exhaust unit top plate (4.1), an exhaust hole (4.2) arranged on the exhaust unit top plate (4.1), an exhaust unit top protecting net (4.6) arranged in the exhaust hole (4.2), an exhaust unit hinge (4.3) fixed at the left end of the top of the exhaust unit top plate (4.1), an exhaust unit handle (4.4) fixed at the right end of the top of the exhaust unit top plate (4.1), an exhaust fan (4.5) connected to the bottom of the exhaust unit top plate (4.1), and an exhaust fan protecting cover (4.7) fixed at the bottom of the exhaust fan (4.5); exhaust fan protection casing (4.7) are fixed in exhaust fan protection casing center plate (4.72) in exhaust fan protection casing flange (4.71) middle part through a plurality of exhaust fan protection casing connecting rods (4.73) including connecting in exhaust fan protection casing flange (4.71) bottom, and exhaust fan protection screen (4.74) are set up at exhaust fan protection casing connecting rod (4.73) top.
3. The sliding type wellhead protection system with the ventilation function as claimed in claim 1, wherein the flexible air pipe (3.4) is connected with the sling (3.5) in a sliding manner through a plurality of hanging rings arranged at one side of the flexible air pipe (3.4).
4. Sliding wellhead protection system with gas exchange function according to claim 1, characterised in that the flexible air hose (3.4) is a sail hose.
5. The sliding wellhead protection system with ventilation function as claimed in claim 1, characterized in that the air volume of the first jet fan (3.2) is 0.15-0.3 times of the air volume of the exhaust fan (4.5).
6. The sliding wellhead protection system with ventilation function as claimed in claim 1, wherein the air volume of the second jet fan (3.3) is 0.15-0.3 times of the air volume of the exhaust fan (4.5).
7. Sliding wellhead protection system with gas exchange function according to claim 1, characterised in that a plurality of snap holes (2.5) are provided on the base track (2.4).
8. Sliding wellhead protection system with ventilation function according to claim 7, characterized by the fact that the outside of said shield wheel set (1.5) is equipped with a snap.
9. The sliding wellhead protection system with ventilation function according to claim 1, characterized in that a spray head is arranged at the bottom of the protection cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210411331.9A CN114837726B (en) | 2022-04-19 | 2022-04-19 | Sliding wellhead protection system with ventilation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210411331.9A CN114837726B (en) | 2022-04-19 | 2022-04-19 | Sliding wellhead protection system with ventilation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114837726A true CN114837726A (en) | 2022-08-02 |
| CN114837726B CN114837726B (en) | 2025-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210411331.9A Active CN114837726B (en) | 2022-04-19 | 2022-04-19 | Sliding wellhead protection system with ventilation function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20110185676A1 (en) * | 2010-02-01 | 2011-08-04 | Toyota Motor Engin. & Manufact. N.A.(TEMA) | Storm collar apparatus and method of installation |
| CN103016043A (en) * | 2012-12-14 | 2013-04-03 | 中铁十七局集团第三工程有限公司 | Inflatable smoke exhaust and dust removal isolating hood for tunnel shaft construction |
| CN106121707A (en) * | 2016-08-19 | 2016-11-16 | 中铁隧道勘测设计院有限公司 | The most two-tube municipal administration and highway are grown up the ventilating system of shield tunnel and method of ventilation |
| CN113309537A (en) * | 2021-06-30 | 2021-08-27 | 济南市市政工程设计研究院（集团）有限责任公司 | Integrated tunnel pilot tunnel and method for realizing forward slag-discharging, ventilating, escaping and exploring |
| CN217518691U (en) * | 2022-04-19 | 2022-09-30 | 中铁隧道集团二处有限公司 | Sliding type wellhead protection system with ventilation function |
-
2022
- 2022-04-19 CN CN202210411331.9A patent/CN114837726B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110185676A1 (en) * | 2010-02-01 | 2011-08-04 | Toyota Motor Engin. & Manufact. N.A.(TEMA) | Storm collar apparatus and method of installation |
| CN103016043A (en) * | 2012-12-14 | 2013-04-03 | 中铁十七局集团第三工程有限公司 | Inflatable smoke exhaust and dust removal isolating hood for tunnel shaft construction |
| CN106121707A (en) * | 2016-08-19 | 2016-11-16 | 中铁隧道勘测设计院有限公司 | The most two-tube municipal administration and highway are grown up the ventilating system of shield tunnel and method of ventilation |
| CN113309537A (en) * | 2021-06-30 | 2021-08-27 | 济南市市政工程设计研究院（集团）有限责任公司 | Integrated tunnel pilot tunnel and method for realizing forward slag-discharging, ventilating, escaping and exploring |
| CN217518691U (en) * | 2022-04-19 | 2022-09-30 | 中铁隧道集团二处有限公司 | Sliding type wellhead protection system with ventilation function |
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| CN114837726B (en) | 2025-11-21 |
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