Three-dimensional adjustable high-pressure-bearing high dynamic water grouting system and testing method

Abstract

The invention provides a three-dimensional adjustable high-pressure-bearing high dynamic water grouting system and a testing method. The three-dimensional adjustable high-pressure-bearing high dynamicwater grouting system comprises a model cabin frame, a loading system, a grouting system, a dynamic water system and a monitoring system. The model cabin frame is composed of an upper plate, a lowerplate, a left plate, a right plate, a front plate and a rear plate; the upper plate and the lower plate are composed of a plurality of first basic modules, the left plate and the right plate are composed of a plurality of second basic modules, and the front plate and the rear plate are composed of a plurality of third basic modules; the model cabin frame is used for being filled with a geomaterial, and the size of the filling space is adjustable. The loading system is used for simulating the stress condition in a pressure-bearing state at a preset burial depth. The grouting system is used forcarrying out a grouting test on the geomaterial in the model cabin frame. The dynamic water system is used for injecting water into the geomaterial in the model cabin frame to simulate dynamic water with a preset pressure and a preset flow. The monitoring system is used for monitoring the stress condition of the geomaterial in the model cabin frame, the internal pore water pressure and the water flow information.

Description

technical field [0001] The disclosure belongs to the field of rock-soil model tests, and in particular relates to a three-dimensional adjustable high-pressure large-dynamic water grouting system and a test method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] At present, scholars at home and abroad have developed a series of test devices for disaster prevention and control in deep underground engineering, which has promoted the development of rock-soil medium grouting theory to a certain extent, but there are also certain shortcomings. For example, the size of the test device is fixed, the dimension of the pressure applied is limited and the pressure is low, and the grouting test is mostly in a static water environment or the hydrodynamic pressure provided is low, which contradicts the actual background of many deep underground projects...

AI Technical Summary

Problems solved by technology

[0005] 1) The size of the test device is generally small and fixed, and the utilization rate of the test device is low

[0006] 2) It can only simulate single plate cracks or Monte Carlo cross cracks, and cannot simulate porous media such as pebbles, sand, etc.

[0007] 3) The amount of grout stored in the pressure-bearing cylinder is limited and the position of the grout surface in the cylinder cannot be observed, and the pressure-bearing cylinder lacks a pressure relief device, which is u

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