A multi-point continuous observation device for deep displacement of coal seam roof

Abstract

The invention provides a multi-point continuous observation device for the deep displacement of a coal seam roof, which includes a sealing steel pipe member at the rear end, a plurality of steel pipe connecting members in the middle section, a steel pipe connecting head at the front end, and a plurality of PVC connectors. The components and the steel pipe connecting members are connected by PVC connectors, the two adjacent steel pipe connecting members are connected by PVC connectors, the steel pipe connecting head and the steel pipe connecting members are connected by PVC connectors, and the The sealing steel pipe member, the steel pipe connecting member and the steel pipe connecting head are all provided with a measuring device and a measuring point fixing device. The invention can realize multi-point displacement monitoring of coal and rock roof, the displacement measuring point is firmly anchored and not easy to loosen, can carry out deep displacement monitoring, the monitoring depth can reach 90m, can complete multi-point installation at one time, the installation process is simple, and is convenient for on-site operation Has wide applicability.

Description

technical field [0001] The invention relates to the technical field of roadway mine pressure observation, in particular to a multi-point continuous observation device for deep displacement of a coal seam roof. Background technique [0002] In the past ten years, the demand for energy in various countries has been increasing day by day, and with the continuous increase in the depth of coal mining, coal resources in shallow mines at home and abroad are decreasing or even facing depletion. Excavation of deep coal formations in the structure. Due to the high in-situ stress, especially the lateral high stress, the deep rock mass has different mechanical characteristics from the shallow rock mass. The scope of and disturbance increases, the mine pressure appears intense, and the risk of rock burst, coal and gas outburst increases. Therefore, the displacement observation of the deep surrounding rock is indispensable, so as to select a reasonable support form to reduce the deforma...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention aims to propose a multi-point continuous observation device for the deep displacement of the coal seam roof. The measuring tubes with measuring points are assembled in sections through PVC plastic pipes, and each measuring tube with measuring points is separately fixed in the borehole. On the rock wall at the designated location, the deep displacement of the surrounding rock of the roadway can be monitored accurately, conveniently and efficiently, which solves the technical problems of low installation efficiency, poor fixing of measuring point devices and limited displacement monitoring depth of traditional displacement meters.

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