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Coal Engineering ›› 2024, Vol. 56 ›› Issue (9): 65-71.doi: 10.11799/ce202409011

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Classification management system of rock burst prevention and control in coal roadway development face#br# #br#

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  • Received:2024-02-23 Revised:2024-09-24 Online:2023-09-20 Published:2025-01-08
  • Contact: Dong Zhang E-mail:cqt1980625@126.com

Abstract:

The prevention and control of rock burst risk in coal roadway excavation work face is directly related to the safety production level of coal mines. The research aims to establish a graded management system for rock burst risk in excavation work face, and improve the effectiveness of rock burst prevention and control from the management level. In order to obtain a more reasonable hierarchical management system, factor analysis method is adopted. Firstly, the influencing factors of rock burst in coal roadway excavation working face are analyzed, and the main risk sources of rock burst in excavation working face are obtained. On the basis of risk factor analysis, the risk verification method is used to determine the use of two primary indicators and seven secondary indicators to comprehensively evaluate and classify the risk of rock burst in coal roadway excavation working face. Among them, two primary indicators are the theoretical and technical indicators of coal roadway excavation face anti-collision, and the personnel and management indicators of coal roadway excavation face anti-collision. Corresponding secondary indicators have been proposed for the primary indicators. The Analytic Hierarchy Process (AHP) was used to calculate the weights of various indicators, forming a risk classification system for rock burst in coal roadway excavation working faces. The classification results were divided into five levels: "safe", "relatively safe", "moderate", "relatively serious", and "serious". Based on different risk levels, a rational management system was proposed accordingly. Finally, the grading system was applied to the excavation face of Jinzhuang mine, which was initially rated as "relatively serious". After the development and implementation of targeted prevention and control safety measures and supporting institutional measures, the hazard level was raised to "relatively safe", indicating that the established grading management system is reasonable. The research results have certain reference significance for the prevention and control of rock burst in excavation faces.

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