A joint monitoring system and monitoring method for deformation characteristics of surrounding rock in coal mine roadway

Abstract

The invention provides a coal mine roadway surrounding rock deformation characteristic joint monitoring system and monitoring method. The coal mine roadway surrounding rock deformation characteristicjoint monitoring system comprises an intra-hole imaging monitoring system, an intra-hole multi-point displacement meter monitoring system, an anchor part anchoring force monitoring system, and a cavewall surface deformation monitoring system; the intra-hole imaging monitoring system is used for monitoring the development condition of surrounding rock fissures at different depths within the anchorage range of an anchor part; the intra-hole multi-point displacement meter monitoring system is used for monitoring the development condition of the deep-shallow part separation layer deformation of the roadway surrounding rock at different depths and different stages in the borehole; the anchor part anchoring force monitoring system is used for monitoring the anchoring force change of the coal mine anchor part supporting the roadway surrounding rock; and the cave wall surface deformation monitoring system is used for monitoring the relative displacement of the surrounding rock on the surfaceof the cave wall. In the coal mine roadway surrounding rock deformation characteristic joint monitoring method provided by the invention, a reasonable measuring point arrangement principle is designedto obtain the deformation characteristics of the surrounding rock and the anchor spray support; the multi-source monitoring results solve the shortcomings of the traditional information monitoring that easily form information islands and data discontinuities, and ensure the integrity of the monitoring results; and the results of multi-source monitoring are mutually confirmed, therefore, the support measures can be reasonably formulated.

Description

technical field [0001] The invention belongs to the field of coal mine construction, and specifically relates to a roadway deformation characteristic joint monitoring system and monitoring method, and more specifically relates to a sensor arrangement, a monitoring method, and a data joint analysis method for monitoring the deformation of surrounding rocks in coal mine bolt-net-spraying support roadway, It is suitable for information monitoring during the construction of coal mine roadway by the new Austrian method. Background technique [0002] The deformation characteristics of coal mine bolt-mesh shotcrete support roadway is an important basis for evaluating the rationality of the support scheme and changing the support parameters in the construction process. Monitoring and obtaining accurate deformation characteristics of the joint action of surrounding rock and support is the key to ensuring the safety of roadway excavation. One of the basic jobs. [0003] Existing meth...

AI Technical Summary

Problems solved by technology

[0004] Underground anchoring and grouting support roadways in coal mines are disturbed by mine pressure and violent blasting construction. The existing monitoring methods often have poor anti-knocking performance of sensors during field application; surface measuring points and direct-reading instruments are sprayed repeatedly during construction. Destruction; after the large-section roadway is excavated, the accumulation of gangue changes dynamically, the light is dark, and there are many interference factors, which cause problems such as difficulty in measuring and reading data; resulting in discontinuity of monitoring data

In addition, when two or more methods are used in combination, the monitoring results are mutually isolated islands of information, which is difficult to corroborate each other, and there is no mutual analysis of qualitative and quantitative monitoring.

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