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Test bed device for tunnel excavating and grouting model and application method of device

A test bench and tunnel excavation technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem of no geological disasters, etc., and achieve the effect of satisfying repeatability, convenient assembly and disassembly

Inactive Publication Date: 2014-07-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current test devices either only simulate the tunnel excavation process or only the grouting process, and there is no model test device that can realize the continuous system simulation of the geological disaster occurrence process during the tunnel excavation process and the subsequent grouting reinforcement process

Method used

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  • Test bed device for tunnel excavating and grouting model and application method of device
  • Test bed device for tunnel excavating and grouting model and application method of device
  • Test bed device for tunnel excavating and grouting model and application method of device

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Embodiment Construction

[0045] The present invention is described in detail below in conjunction with accompanying drawing:

[0046] A tunnel excavation and grouting model test bench device, which can continuously and systematically simulate the occurrence of geological disasters during tunnel excavation and the subsequent grouting reinforcement process. The device includes a bottom plate 3, a side wall 1, and a top cover 2 and 19 reinforced concrete support frames.

[0047] The side wall 1 in the test bench is formed by connecting a model ring unit 5 with a height of 300 mm through high-strength bolts 4 . The model ring unit 5 is composed of two semi-arc units 6, and the semi-arc unit 6 is composed of an arc plate 7, a semi-circular rib plate 8, and a vertical rib plate 9. The arc plate 7 is 10mm thick and 1500mm in diameter. The top and bottom of the arc plate 7 are welded along the edge with a 100mm wide and 10mm thick semi-circular rib plate 8. Both ends and the middle are welded with a vertic...

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Abstract

The invention discloses a test bed device for a tunnel excavating and grouting model and an application method of the device. The test bed device comprises a lateral wall, a head cover for providing and loading a crustal stress platform, and a bottom plate arranged at the top of a reinforced concrete support rack, wherein the lateral wall vertically stands on the bottom plate and is connected with the bottom plate; the head cover is arranged at the top of the lateral wall and connected with the lateral wall; the lateral wall is formed by a plurality of model ring units which are stacked together in the vertical direction and sequentially connected; two round holes are formed in tunnel design positions in the diameter directions corresponding to the model ring units; the round holes are plugged by using arc sealing steel plates which are the same as the lateral wall in radian before tunnel excavation; holes are formed in the positions at four corners of the arc sealing steel plates; the arc sealing steel plates are connected with the lateral wall. By adopting the device, the geological disaster generation process and the later grouting reinforcing process in the tunnel excavation process can be continuously and systematically simulated, and the device has the advantages of being high in strength, and convenient to assemble and dismantle by adopting a modular assembling mode.

Description

[0001] technical field [0002] The invention relates to a geotechnical engineering model test bench device, in particular to a tunnel excavation and grouting model test bench device and a use method. Background technique [0003] During the excavation of tunnel engineering, problems such as large deformation of surrounding rock and large amount of water inflow often occur, and even water and mud inrush disasters may occur, causing huge loss of personnel and property. Grouting, as an effective method to strengthen weak surrounding rock and control water and mud inrush disasters, has been more and more widely used in tunnel water and mud inrush disaster control projects. Model test is an important method to study the catastrophe mechanism in the formation process of tunnel water and mud inrush disaster, the law of grout diffusion in the process of grouting treatment and the reinforcement mechanism. However, there are currently few model test benches for tunnel excavation and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 张霄李志鹏张连震朱明听谭英华李鹏郑东柱
Owner SHANDONG UNIV
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