Simulation experiment platform of compacting system of solid-filling coal mining solid material

Abstract

The invention relates to a simulation experiment platform of a compacting system of a solid-filling coal mining solid material, which mainly consists of a power supply system, a compacting system, a loading system, a data collecting and processing system, a base and a box frame. The systems are sequentially matched to realize simulation of cut and fill field, filling and compacting process of the solid material in solid cut and fill technology can be realized in a laboratory, and associated parameters are obtained through the data collecting and processing system. The compacting system of the platform can realize the compacting force of 2MPa, the loading system can realize the loading pressure of 10MPa maximally. The loading pressure can be continuously constant or alternately loads. The experiment device can measure the stress-strain characteristics of same filling material under different loading pressures, the stress-strain characteristics of different filling materials under same loading pressure, and the creep property of a special filling material under continuous constant pressure in real time. The platform is simple in structure and easy to operate, and is an important platform for mechanical property of an evolutive theoretic research of the solid filling material under a special loaded condition in the solid filling coal mining technology.

Description

technical field [0001] The invention relates to a simulation experiment platform for a solid filling coal mining solid material compaction system, and is especially suitable for simulating the filling and compaction of solid materials and the deformation experiment of solid materials under fixed or alternating loads. Background technique [0002] The solid filling mining technology has good technical advantages, economic benefits and social benefits in terms of liberating the "three down" coal pressing, controlling surface subsidence, recovering room pillars, and releasing sluggish coal resources; as the solid filling mining technology becomes more mature, it is being promoted In the process of application, some problems have also been highlighted; on the one hand, some filling parameters in industrial practice are empirical parameters, and relevant filling parameters cannot be simulated by laboratory experiments. It is impossible to foresee the problems that may arise in th...

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Problems solved by technology

[0002] The solid filling mining technology has good technical advantages, economic benefits and social benefits in terms of liberating the "three down" coal pressing, controlling surface subsidence, recovering room pillars, and releasing sluggish coal resources; as the solid filling mining technology becomes more mature, it is being promoted In the process of application, some problems have also been highlighted; on the one hand, some filling parameters in industrial practice are empirical parameters, and relevant filling parameters cannot be simulated by laboratory experiments. It is impossible to foresee the problems that may arise in the process of filling mining under different geological conditions; on the other hand, once the solid filling mining is implemented in the stope, the control effect of the overlying strata and the surface movement and subsidence will be determined by the filling body, rather than artificially. intervention control, which brings difficulties to the optimization of filling parameters

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