Comprehensive control method for rockburst in multiple-coalbed mining mine

Abstract

The invention discloses a comprehensive control method for rockburst in a multiple-coalbed mining mine. According to the method, rockburst is controlled by employing two-side blasting for pressure relief, pressure-relief chamber establishment and coalbed high-pressure water injection according to monitoring data. The source of the monitoring data comprises electromagnet radiation monitoring, drilling-cutting-method pulverized coal monitoring, mine pressure monitoring and micro-seismic monitoring system monitoring. Two-side blasting for pressure relief means that during tunneling of upper gangway and lower gangway of a working face, following closely the tunneled working face, deep-hole pressure-relief blasting is arranged to the lower side of the upper gangway and the upper side and the slower side of the lower gangway. Pressure-relief chamber establishment means that the pressure-relief chambers are disposed on the lower side of the upper gangway and the upper side and the lower side of the lower gangway every 40 meters during tunneling. The coalbed high-pressure water injection means that advance water injection accompanied by coalbed high-pressure water injection is carried out on the upper sides and the lower sides of the gangways and in the pressure-relief chambers for rockburst control. According to the method of the invention, multiple methods are used for comprehensive forecasting, so that the rockburst control level is improved, the loss caused by rockburst is effectively reduces, and thus the pertinence and the effectiveness of the rockburst control are substantially enhanced.

Description

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AI Technical Summary

Benefits of technology

This technology uses various techniques to make accurate predictions about potential future rocks that may come under attack or cause damage before they are damaged themselves. By analyzing these data over time it becomes possible to identify areas where there might be more likely occurrences of explosion risk than usual. It also helps plan ahead with better strategies against such risks while minimizing losses associated with them.

Problems solved by technology

The technical problem addressed in this patents relates to improving the safety and reliance on stable coal and rocks (Coals) undergoing explosion dynamics induced by strong windings called static load). Existing solutions involve reducing the amount of water used while excavating, increasing the number of times needed to stop the movement, adding reinforcement materials like steel bars between layers of coarse stone, create weak zones around the edges of the stones, changing their shape through deformation processes, adjusting the stress level within each zone, and ensuring no harm can be done if necessary.