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A device and method for simulating the stress on the lining support structure of the annular tunnel fluid filling

A supporting structure and fluid technology, which is applied in the fields of mining cavern support, engineering tunnels, and engineering roadways, can solve the problems that the force cannot be recorded well, the simulation device is large in size, and the tunnel cannot be simulated, etc., and achieves extensive engineering practice significance and application prospects, simple device structure, and convenient operation

Active Publication Date: 2020-04-07
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] None of the tunnel force simulation devices seen so far can truly simulate the force on the tunnel, and the research on tunnels has certain limitations. The main reason is that the existing simulation devices are too large and inconvenient to operate. The force cannot be well recorded, and some devices cannot simulate the force of the tunnel well, which makes the analysis of the force on it deviate from reality. Therefore, it is very important to design a device and method for simulating the force of the tunnel

Method used

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  • A device and method for simulating the stress on the lining support structure of the annular tunnel fluid filling
  • A device and method for simulating the stress on the lining support structure of the annular tunnel fluid filling
  • A device and method for simulating the stress on the lining support structure of the annular tunnel fluid filling

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Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 1-4 As shown, a device for simulating the stress of the annular tunnel fluid filling lining support structure is characterized in that it includes a prefabricated reaction force frame 1, and a chute 5 is processed on the inner side wall of the prefabricated reaction force frame 1. The first force plate 3 and the second force plate 4 are installed in sliding fit on the chute 5, and the magnetic table displacement meter 18 is installed on the prefabricated reaction force frame 1 through the placement structure of the magnetic table displacement meter. A jack 2 is arranged between the force plate 3 and the prefabricated reaction force frame 1, a plurality of springs 9 are evenly distributed between the first force plate 3 and the second force plate 4, and outside the second force plate 4 The end face is fixed with a raised loading plate 7, the surface of the raised loading plate 7 is pasted with a pressure sensor 17, and the raised loading surface of the ra...

Embodiment 2

[0048] The reaction force frame 1 is welded by steel plates with greater rigidity and strength, and there are recessed chute 5 on both sides of the prefabricated reaction force frame 1, and the magnetic table displacement meter placement structure is welded on the reaction force frame 1, said The structure is composed of two steel bars with a certain distance welded on the reaction force frame 1 and a steel plate 21 welded in the middle of the thin steel bar 20 .

[0049] Further, the jack 2 is a force-loading device for the device to simulate the load of the tunnel, the bottom of which acts on the reaction frame 1, and the top acts on the first force plate 3 to apply load to the device.

[0050] Further, the first stress plate 3 is made of a steel plate with relatively high rigidity and strength, and the structures at both ends of the first stress plate 3 are protruding convex sliding strips 6, which can be just opposite to the reaction force frame 1. The chute 5 recessed in ...

Embodiment 3

[0061] Any one of the methods for simulating the force-bearing device of the annular tunnel fluid-filled lining support structure to carry out the simulation test, the device applies a load through the jack 2 to act on the first force-bearing plate 3 and the second force-bearing plate 4, and the force-bearing The plate further acts the load on the separated circular steel pipe 14. When the load reaches 85% of the yield limit of the steel pipe, the pressure relief stage is performed. In the pressure relief stage, the rubber piston 22 at the end of the pressure relief conduit 19 is removed, and the suction The catheter of the equipment 23 is inserted into the pressure relief port 13 for sand discharge treatment. After the pressure relief is completed, the pressure relief port 13 is sealed with a rubber piston 22 to ensure that the filling does not flow out during the loading stage, and then the loading and unloading operation is performed. During this process The mechanical param...

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Abstract

The invention discloses a device and method for simulating the force of an annular tunnel fluid-filling lining support structure. A chute is processed on an inner side wall of a reaction frame, a first force receiving plate and a second force receiving plate are slidably fitted on the chute, a magnetic meter seat displacement gauge is mounted on a prefabricated reaction frame through the magneticmeter seat displacement gauge placement structure, a jack is disposed between the first force receiving plate and the prefabricated reaction frame, multiple springs are uniformly disposed between thefirst force receiving plate and the second force receiving plate, a convex loading plate is fixed on an outer end surface of the second force receiving plate, a pressure sensor is attached to the surface of the convex loading plate, and a convex loading surface of the convex loading plate can be embedded in an opening of a split circular steel pipe. The annular tunnel fluid-filling lining supportstructure is advantaged in that the annular tunnel fluid-filling lining support structure is simple in structure, is low in cost, is convenient for operation, can be applied to researches of tunnels under different conditions, lays the solid base for popularization of the annular tunnel fluid-filling lining support technology and has wide engineering practice meanings and application prospects.

Description

technical field [0001] The device relates to a device and method for simulating the stress of a ring-shaped tunnel fluid-filled lining support structure, and is mainly applicable to fields such as engineering tunnels, engineering roadways, and mining caverns. Background technique [0002] In recent years, with the rapid development of my country's national economy, the construction of expressway and national highway as the main body of the rapid transportation network has made rapid progress. Today, economy and efficiency play an increasingly prominent role. However, due to the increasingly complex geological and engineering conditions of the tunnel, problems during and after the tunnel construction have become more prominent. For example, during the construction of the Guanjiao Railway Tunnel, the bottom of the tunnel was bulged by about 1m. 30cm; the side wall, arch and bottom of the cross passage of the Simplon Railway Tunnel were cracked and bulged. Therefore, the resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/20E21D11/00
CPCE21D11/00G01L1/20
Inventor 刘杰兰俊高素芳韩绍康周克虎张罗送高进黎照孙涛莫承林罗越文李骁霖周文俊武杰宾蒋旭
Owner CHINA THREE GORGES UNIV
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