Ground fracture test device and method for simulating fracture dislocation and underground water change

Abstract

The invention discloses a ground fracture test device and a method for simulating fracture dislocation and underground water change. The device comprises a test model box, a fixed platform and a movable platform, a dislocation adjusting mechanism is arranged at the bottom of the moving platform; a first bottom plate, a first waterproof plate and a first water stop plate are sequentially arranged on the fixed platform from bottom to top, a second bottom plate, a second waterproof plate and a second water stop plate are sequentially arranged on the movable platform from bottom to top, and the dislocation adjusting mechanism comprises a support, a jack and a sliding limiting component. The method comprises the following steps: 1, performing preparation before a test; 2, laying a model soil layer in the model box, burying a sensor and connecting the sensor with a data acquisition instrument; 3, injecting water into the model soil layer; 4, simulating soil layer fracture dislocation of thesimulation model; and 5, simulating underground water level change by model soil layer drainage. The device can simulate the development condition of the ground fissures under the conditions of fracture dislocation and underground water change, and is high in simulation accuracy.

Description

technical field [0001] The invention belongs to the technical field of ground fissure simulation test, in particular to a ground fissure test device and method for simulating fault dislocation and groundwater changes. Background technique [0002] At present, there is a lack of a mature simulation test system platform for special research on the formation mechanism of ground fissures in China, especially for ground fissure simulation tests under the condition of groundwater. Some scholars have carried out some physical model test research on ground fissures, but limited by the conditions of the test site, model platform, and monitoring equipment, most of them only carry out research on a single disaster-causing factor. Model tests have been carried out on ground fissures induced by coupling with groundwater changes. In addition, some scholars have carried out model test research on the formation mechanism of ground fissures under fault dislocation. However, the physical mod...

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Problems solved by technology

In addition, some scholars have carried out model test research on the mechanism of ground fissures under fault dislocation, but the physical model test for ground fissure propagation caused by groundwater level changes has not yet been carried out, and the test platform for ground fissures under fault dislocation is The relatively simple model box cannot control factors such as fault displacement and groundwater level changes well

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