JPH04105191U - liner plate - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the collapse of the ground behind the liner plate,
This eliminates the need for grouting on the back surface. [Structure] An elastic fluid filling bag 2 is attached to the back of a steel frame 1 that constitutes the main body of the liner plate.
The bag body 2 was provided with a fluid filling port 3 passing through the frame body 1.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a liner plate that is applied to prevent the collapse of the ground behind a temporary pit. It is something.

0002

[Conventional technology]

In the construction of conventional temporary shafts, the back of the liner plate installed on the inner wall of the shaft. The gap between the ground and the ground should be left as is, or the gap should be filled with flash-setting grout. Injecting and filling.

0003

[Problem that the idea aims to solve]

If the void on the back of the liner plate is left as it is, the ground will collapse and the plate will collapse again. Injecting grout into the void at the back of the hole increases construction costs. The present invention was proposed in view of the problems of the above-mentioned prior art, and its purpose is This prevents the collapse of the ground behind the liner plate and prevents the grouting on the back side of the liner plate. The purpose of the present invention is to provide a liner plate that does not require injection.

0004

[Means to solve the problem]

In order to achieve the above object, the liner plate according to the present invention has a backbone of a steel frame. A fluid filling bag having elasticity is attached to the surface, and the bag is filled with fluid penetrating the frame. It is configured with a filling port.

[0005]

[Effect]

Since the liner plate according to the present invention is constructed as described above, the liner plate according to the present invention is The steel frame that constitutes the main body of the inner plate is installed on the inner wall of the shaft so that it is located inside the shaft. After attaching the fluid, the fluid is inserted into the back of the steel frame from the inside of the mine through the fluid filling port that is penetrated through the steel frame. When fluid is pressurized and filled into the fluid filling bag, the bag expands due to the internal pressure of the fluid. This fills the gap between the back surface of the frame and the ground to prevent the ground from collapsing.

[0006]

【Example】

The present invention will be described below with reference to the illustrated embodiments. 1 is an arc-shaped steel frame that constitutes the main body of the liner plate, and the back side of the frame 1 is Constructed from materials that have elasticity and airtightness, such as vinyl chloride, and will not break during transportation. The fluid filling bag 2 is glued or tightened. There is a tubular flow in the center of the front of the bag body 2. A body filling port 3 is welded, and the tip of the filling port 3 passes through the frame 1. 4 in the diagram 5 is the joint part of the liner plate, and 5 is the connection port provided on the side of the bag body 2. This is to connect between the interiors of adjacent bags 2.

[0007] FIG. 8 shows the connection part of the same bag 2, and a rubber ring 5 is attached to the inner circumferential surface of the adjacent bag 2. A connecting nipple 5b is fitted between the connecting ports 5 and 5 provided with a connecting hole 5a. Then, as shown in FIGS. 5 and 6, the liner plate is attached to the inner wall surface of the temporary hole 6. The bag body 2 is then compressed from the inside of the mine through the fluid filling port 3. When air is press-fitted, the bag body 2 is moved as shown at 2' by the pressure of the compressed air. It expands (see Figure 4) to fill the gap between the frame 1 and the ground 7, and prevents the ground 7 from collapsing. To prevent. Note that after compressed air is press-fitted into the bag body 2, a carrier is inserted into the fluid filling hole 3. Tightly fit the tab 8 to prevent air leakage.

[0008] Note that the bag body 2 is attached horizontally to each piece of the liner plate using the connection piece 5. Alternatively, the compressed air may be charged in one stage by connecting them in the opposite direction. Also if necessary Then, fit the cap onto the connecting piece 5, and attach the cap to the front of each piece of liner plate. The recording bag may be filled with compressed air. FIG. 6 shows another embodiment of the present invention, in which the bag body 2 has an air outlet in addition to the fluid filling port 3. It has an outlet 9, and the fluid hardening material such as cement mortar is filled with the fluid through the filling port 3. Air is injected into the filling bag 2 and the air inside the bag 2 is expelled from the air outlet 9. , applies in case of permanent retention of liner plates.

[0009]

[Effect of the idea] In this way, the liner plate according to the present invention has flexibility on the back side of the steel frame. A fluid filling bag is attached to the bag, and the bag is provided with a fluid filling port that penetrates the frame. This prevents the back ground of the liner plate from collapsing and also prevents the liner plate from collapsing. This eliminates the need to inject grout into the back of the plate, reducing construction costs. .

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of a liner plate according to the present invention.

FIG. 2 is a cross-sectional plan view of the liner plate.

FIG. 3 is a diagram taken along the arrow E--A in FIG. 2;

FIG. 4 is a longitudinal cross-sectional view showing the fluid-filled bag in an inflated state.

FIG. 5 is a longitudinal sectional view showing a state in which the liner plate is applied to a temporarily established shaft.

FIG. 6 is a rolling diagram in the direction of the arrows in FIG. 5;

FIG. 7 is a perspective view showing another embodiment of the liner plate according to the present invention.

FIG. 8 is a plan view showing the connecting portion of the fluid filling bag.

FIG. 9 is a top view of the connection nipple.

[Explanation of symbols]

1 Steel frame 2 Fluid filling bag 3 Fluid filling port

Claims (1)

[Scope of utility model registration request] 1. A liner plate characterized in that an elastic fluid-filling bag is attached to the back surface of a steel frame, and the bag is provided with a fluid-filling port that penetrates the frame.