Displacement sensor of infilling body

Abstract

The invention relates to a displacement sensor of an infilling body, which can be used for measuring a roof settling distance in a goaf and accurately detecting the infilling effects and has strong environmental adaptation. The displacement sensor comprises a piston rod; the piston rod is slidably connected with a hydraulic support and the bottom of the hydraulic support is arranged on a bracket cover; the bracket cover is also provided with a spring guide rod bracket and a spring guide rod is arranged on the spring guide rod bracket; the spring guide rod comprises an inner spring guide rod and an outer spring guide rod which are slidably connected with each other; the inner spring guide rod is provided with an inner upper cover of the spring guide rod and a spring which is fixedly connected with the inner upper cover of the spring guide rod is wound on the periphery of a rod body of the spring guide rod; the rod body of the spring guide rod is internally provided with a steel wire rope; one end of the steel wire rope is fixedly connected with the inner upper cover of the spring guide rod and the other end of the steel wire rope is connected with a potentiometer which is arranged in the spring guide rod bracket; the potentiometer is connected with an integrated circuit module; the hydraulic support is provided with a coiling-out end and the coiling-out end is provided with a rubber sleeve.

Description

1. Technical field: [0001] The invention relates to a displacement sensor, in particular to a filling body displacement sensor. 2. Background technology: [0002] In the background technology, with the increasing dominance of coal in my country's energy industry, in recent years, my country's coal mining scale has continued to expand, and the mining range has increased accordingly, resulting in the gradual expansion of the goaf area. At present, my country's coal mining enterprises still use the method of artificial roofing to manage the roof in most cases, and do not take any measures for the goaf after mining. According to the principle of mining subsidence, the ground subsidence after mining will reach 65% of the thickness of the coal seam. ~95%. It is this uncontrolled mining method that directly leads to a series of "black disasters" such as the destruction of ground buildings, the interruption of rivers, the decline of groundwater levels, and the loss of control of und...

AI Technical Summary

Problems solved by technology

[0004] In order to prevent the occurrence of the above accidents, it is necessary to fill the goaf. Although the above accidents can be temporarily eliminated after filling, after years of shelving, the deformation of the filling area can still lead to surface subsidence and groundwater penetration, which is harmful to people's lives and Property poses a threat Therefore, after the goaf is filled, real-time monitoring of the filled area is necessary to detect the filling effect

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