An on-site sampling device for slurry in gob filling process and its application method

Abstract

The invention provides an on-site sampling device for slurry in a goaf filling process and a use method thereof, belonging to the technical field of mine filling sampling. The device includes an outer sleeve, an inner sleeve, a cover plate and an L-shaped steel plate bracket. The outer sleeve is provided with an outer sleeve guide rail, and the inner sleeve is provided with an inner sleeve slide rail and a chute. Accurate, the inner casing can be inserted into the outer casing, the cover plate can be inserted into the chute, and the outer casing is fixed by a pair of L-shaped steel plate brackets and bottom plate fixing expansion bolts. The device adopts a separate casing structure, which can be assembled flexibly according to the sampling requirements. The structure is simple and the installation is quick. The inner casing can be reused to reduce costs, and the outer casing is retained in the filling body, which can be used as a reinforcement structure to improve the overall strength of the filling body. The sampling depth is large, typical and representative, and the sampling success rate is high. According to production needs, filling slurry can be taken out in situ, and filling bodies of different ages can also be taken out to meet different production inspection and test needs.

Description

technical field [0001] The invention relates to the technical field of mine filling and sampling, in particular to an on-site sampling device for slurry during goaf filling and a method for using it. Background technique [0002] Compared with other mining methods, the filling mining method has the advantages of high recovery rate, low dilution rate, and mining safety. Especially after entering deep mining, it has obvious advantages in controlling ground pressure and improving environmental protection. Relevant national departments also give high praise Attention is required to open new mines, and in principle, the filling method should be used for mining. [0003] One of the key factors in filling mining is the filling body strength. Determining a reasonable filling body strength plays a key role in controlling stope ground pressure, ensuring mining safety, and reducing filling costs. Therefore, the research on filling body strength has become one of the research hotspots ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the current problems such as difficulty in on-site sampling of filling slurry, complicated construction, low sampling success rate, insufficient sampling depth, poor representativeness, and inability to obtain in-situ slurry, the invention provides a slurry filling process for goaf filling. On-site sampling device and method of use

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