An oblique slip fault simulation device and simulation method

Abstract

The invention discloses a slant-slip-fault simulating device. A fixed disc model box of the slant-slip-fault simulating device is fixed onto a cuboid pedestal, a dislocation disc model box is movably arranged on prism pedestals, and the fixed disc model box is aslant matched with one side of the dislocation disc model box and communicated with the side of the dislocation disc model box to form a cavity for containing a soil model; slant guide rails are arranged on the slopes of the prism pedestals, and triangular sliding blocks are fixed to the bottom end of the dislocation disc model box and slide along the slant guide rails under the effect of jacks so that the dislocation disc model box can be pushed to be aslant dislocated relative to the fixed disc model box; internally-arranged air bags are arranged in the fixed disc model box and the dislocation disc model box respectively and apply vertical pressure to the soil model. The invention further discloses a simulating method based on the device. The vertical displacement component and the horizontal displacement component of two discs of a slant slip fault can be simulated at the same time, the proportion of the bidirectional displacement components can be changed, and the damage, caused by the slant slip fault, to an underground structure can be truly simulated.

Description

technical field [0001] The invention relates to a geotechnical model simulation technology, in particular to an oblique sliding fault simulating device and a simulation method based on the oblique sliding fault simulating device. Background technique [0002] Numerous earthquake examples show that bedrock fault dislocation during earthquakes leads to permanent deformation and damage of overlying soil, which further induces damage to surface and underground structures. When the bedrock fault is dislocated, there are both drop and offset between the two plates of the fault. The drop reflects vertical displacement, and the offset reflects horizontal displacement. This kind of fault is called an oblique slip fault, which is a combination of strike slip fault and dip slip fault complex. At present, in the model experiments aimed at the failure of superstructures induced by bedrock fault dislocation, the actual problems are often simplified, and only the strike slip or only the d...

AI Technical Summary

Problems solved by technology

Since underground structures such as tunnels are not ideal elastic bodies, simply linearly superimposing the damage caused by strike slip mode and dip slip mode cannot really simulate the damage of underground structures caused by oblique slip faults

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