A test device and method for simulating the formation process of in-situ environmental filling body strength

Abstract

The invention belongs to the technical field of filling and mining, and in particular relates to a test device and a method for simulating the formation process of filling body strength in an in-situ environment. The technical scheme of the present invention is as follows: a test device for simulating the formation process of the in-situ environment filling body strength, including a pore piezometer, a matrix suction meter, a humidity sensor, a fiber grating strain sensor, a fiber grating temperature sensor, and a fiber grating sensor demodulator Instrument, laser displacement meter, thermostat and molding structure, the molding structure includes base, wooden shell, lower filter plate, cylindrical cavity, upper cover, plastic hose, polyurethane thermal insulation foam, bracket and feeding funnel. The invention can independently complete the coagulation process test of the filling body, monitor the internal strain, humidity, temperature strain, stress and osmotic pressure test of the filling body, and analyze the changes of temperature and strain inside the large-volume filling body. In-depth provides the necessary means.

Description

technical field [0001] The invention belongs to the technical field of filling and mining, and in particular relates to a test device and a method for simulating the formation process of filling body strength in an in-situ environment. Background technique [0002] With the increasing shortage of renewable mineral resources and the environmental problems caused by the mining process, mine filling is regarded as a mining method that can slow down or eliminate the harmful effects of the environment. In the filling mining method (two-step mining) or goaf filling, in order to achieve the supporting function of the filling body in the stope, a higher filling body strength is usually selected conservatively, especially the filling body in the two-step mining method As a self-supporting artificial pillar, the strength of the filling body is achieved by adding a certain amount of cement. The commonly used cement is ordinary Portland cement. The higher the cement content, the greater...

AI Technical Summary

Problems solved by technology

However, at this stage, there is a lack of test devices that consider the environmental effects of in-situ filling stope under different filling body sizes, especially considering the arching effect of the filling body's own weight, the coupling effect of settlement consolidation and rock temperature of the surrounding rock mass to meet the above conditions. Purpose

Images