Experiment system for simulating fault creep and stick-slip dislocation tunnel structure

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 an existing test device, and particularly relates to an experiment system for simulating a fault creep and stick-slip dislocation tunnel structure, which comprises a box body structure, a support device and a fault dislocation loading system. A friction effect layer, a first surrounding rock layer, a tunnel structure model, a second surrounding rock layer and an overburden pressure layer are sequentially arranged in the box body structure from bottom to top; a through hole is formed in the bottom of the box body structure, and a plate-shaped assembly comprising a first guide plate, a second guide plate and a loading plate is arranged at the upper part of the through hole; a first slide rail and a second slide rail are respectively arranged on the inner sides of the first guide plate and the second guide plate; the loading plate moves along the first sliding rail and the second sliding rail under the action of the fault movement loading system, stick-slip and creep movement effects required by a test are generated through the friction effect layer, and fault movement force is transmitted to the tunnel structure model through the first surrounding rock layer. According to the invention, reliable and effective simulation test data can be obtained.

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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