Ground pressure multi-directional monitoring localizable borehole stress sensor

Abstract

The invention provides a ground pressure multi-directional monitoring localizable borehole stress sensor. The ground pressure multi-directional monitoring localizable borehole stress sensor includes ameasuring device and a measuring table, and the measuring device and the measuring table are connected by wired data or wireless data. The measuring device comprises a cylinder body, a protective cover is arranged at the head end of the cylinder body, the cylinder body is internally provided with a first piston chamber extending in the axial direction of the cylinder body, the tail end of the first piston chamber is in communication with a threaded hole, and a plurality of second piston chambers communicating with the first piston chamber are formed in the head end of the first piston chamber. Buffer chambers communicating with the second piston chambers are formed in the tail ends of the second piston chambers. Third piston chambers communicating with the buffer chambers and axially perpendicular to the cylinder body are formed in the side wall of the cylinder body. Directional stress sensors are disposed on the sides, located at the head end of the cylinder body, of the buffer chambers. Axial pistons are arranged in the first piston chamber and the second piston chambers, and a plurality of radial pistons are arranged in the third piston chambers. Through the arrangement of theradial pistons, stress monitoring in multiple directions is realized, all-around stress monitoring is realized, and the safety of coal mine support is ensured.

Description

technical field [0001] The invention belongs to the technical field of monitoring equipment for roof support in coal mines, and in particular relates to a positionable drilling stress sensor for multi-directional monitoring of ground pressure. Background technique [0002] The existing coal mine roof support monitoring equipment can only monitor the stress in one direction when monitoring, and the monitoring direction is single, which cannot meet the all-round monitoring of the coal mine roof support. Contents of the invention [0003] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and to provide a multi-directional monitoring of ground pressure that can locate the borehole stress sensor. Monitoring, improving the accuracy and comprehensiveness of monitoring. [0004] The present invention is achieved through the following technical solutions: [0005] The ground pressure multi-directional monitoring can locate th...

AI Technical Summary

Problems solved by technology

[0002] The existing coal mine roof support monitoring equipment can only monitor the stress in one direction, and the monitoring direction is single, which cannot meet the all-round monitoring of the coal mine roof support.

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