An experimental system for simulating fault creep and stick-slip dislocation tunnel structures

Abstract

The invention belongs to the technical field of rock mass engineering geomechanics, aims to solve the problem of poor reliability of data obtained by existing test devices, and specifically relates to an experimental system for simulating fault creep and stick-slip dislocation tunnel structures, including a box structure , supporting device, and fault staggered loading system. The friction effect layer, the first surrounding rock layer, the tunnel structure model, the second surrounding rock layer and the overlying pressure layer are arranged in the box structure from bottom to top; There is a through hole, and the upper part of the through hole is provided with a plate-shaped assembly including a first guide plate, a second guide plate and a loading plate; the inner sides of the first guide plate and the second guide plate are respectively provided with a first slide rail and a second slide rail ; The loading plate moves along the first sliding rail and the second sliding rail under the action of the fault dislocation loading system, and produces the stick-slip and creep-slip dislocation effects required for the test through the friction effect layer, and passes through the first surrounding rock layer to the tunnel The structural model transmits fault force; reliable and effective simulation test data can be obtained through the invention.

Description

technical field [0001] The invention belongs to the technical field of rock mass engineering geomechanics experiments, in particular to an experimental system for simulating fault creep and stick-slip dislocation tunnel structures. Background technique [0002] At present, the construction of infrastructure such as railways and highways is being vigorously carried out in the central and western regions of my country. Due to the complex structure and frequent earthquakes in this area, it is necessary to solve the stability problem of cross-fault tunnel engineering in the construction of the project. Therefore, it is urgent to study the influence of fault dislocation on tunnel engineering. The dislocation effect of faults can be divided into two types: creep slip and stick slip. Existing researches are mainly carried out through physical simulation of model boxes, which can only realize creep slip or stick slip. At the same time, the dislocation effect can only be achieved by ...

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Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of poor reliability of data obtained by existing test devices, the present invention provides an experimental system for simulating fault creep and stick-slip dislocation tunnel structures, characterized in that, It includes a model box system and a fault dislocation loading system, and the fault dislocation loading system is arranged below the model box system

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