Rod type strata displacement monitor and system

Abstract

The invention provides a rod type strata displacement monitor, which comprises a displacement sensing unit and an information acquiring and processing unit, wherein the displacement sensing unit comprises a sensor framework, a displacement transmission mechanism, a grating displacement detector unit which uses a grating detection method to convert displacement to an electric signal, and a displacement direction recognizer unit. The invention also provides a strata displacement monitoring system using the rod type strata displacement monitor, wherein the system is provided with a plurality of rod type strata displacement monitors and an underground information conversion and communication substation. A plurality of rod type strata displacement monitors can be arranged in series connection in the same borehole; and compared with the prior displacement detector with a pulling thread, the rod type strata displacement monitor not only solves the problem of reducing the measuring accuracy caused by natural prolonging of the pulling thread, but also can automatically distinguish the displacement direction and improve the strata displacement detection accuracy.

Description

technical field [0001] The invention relates to a rock section measuring instrument, in particular to a rod-type rock displacement monitor and a system capable of measuring displacement between rock layers and coal seams. Background technique [0002] At present, there are many types of sensors and monitors for detecting displacement in engineering, each with its own characteristics and scope of application. Monitoring and forecasting instruments are rare, especially the real-time automatic monitoring of high precision and large displacement is almost blank. Safety accidents caused by roof fall, bottom sill, rockburst, etc. caused by internal displacement changes of roof (bottom) slabs, coal pillars, etc. So far, there is still a lack of reliable, real-time automatic monitoring and forecasting instruments, especially in coal mining, there is still a lack of real-time automatic monitoring and forecasting of underground roadway displacement on the ground. [0003] I applied ...

AI Technical Summary

Problems solved by technology

[0005] 1. The tension line itself will produce slight deformation, resulting in a decrease in measurement accuracy;

[0006] 2. Since the displacement is transmitted by the cable, it is difficult to distinguish the displacement direction of the rock formation;

[0007] 3. Due to the limitation of accuracy, it is only suitable for displacement monitoring of soft rock and rock formation with large displacement

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