Automatic monitoring and early warning method and system for large-area suspended roof disaster in coal mine goaf

Abstract

The invention provides an automatic monitoring and early warning method and system for a large-area suspended roof disaster in a coal mine goaf. The method comprises steps of determining a monitoring and early warning region on the ground according to the relative position relation between the goaf and an earth surface building, drilling a detection hole in the region, and drilling the detection hole into a detection region along the underground, the interior of the detection area being monitored through the detection holes, the failure of the coal pillars between goaf areas below the area being effectively monitored, the early warning effect being achieved, monitoring and early warning of goaf activation formed by room pillar and short wall mining are carried out. The method is advantaged in that the activation monitoring performance and the early warning performance of the goaf formed by room-pillar type and short-wall type mining are improved, the cost is relatively low, automatic endurance and automatic acquisition technology is adopted, the method can be used for a long time, manpower and material resources needing to be invested are saved, and then production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automatic monitoring of roof overhang disasters in goafs, in particular to an automatic monitoring and early warning method and system for large-area overhanging disasters in coal mine goafs. Background technique [0002] At present, many engineering projects have to pass near the gobs of coal mines; for coal mines with longwall mining, the total caving method is generally used to manage the roof, and the geological disasters have basically occurred and ended during the mining period. The safety hazard is small and the management is relatively simple. However, for coal mines with short-wall mining and room-and-pillar mining, if figure 1 As shown, because the overlying rock has not fully collapsed or basically has no collapse, there is a possibility of revitalization of the goaf in the later stage, which poses a great safety hazard to the proposed project, mainly manifested in: [0003] The buried depth ...

AI Technical Summary

Problems solved by technology

[0007] In view of the short-wall mining and room-and-pillar mining coal mines in the existing technology, because the overlying rock has not fully collapsed or basically has no collapse, there may be a possibility of revitalization of the goaf in the later stage, which poses a serious safety hazard to the proposed project The present invention provides a method and system for automatic monitoring and early warning of large-area suspended roof disasters in coal mine goafs. The detection system is used to monitor and warn the activation of goafs near the project and its deformation and destruction process, so as to provide a basis for engineering decision-making and disaster avoidance. , and then make timely early warning and on-site disaster avoidance disposal to reduce or avoid losses

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