Study on Mechanism and Main Influencing Factors of Rockburst under Complex Conditions of Hard and Deep Overburden

IF 1.2 4区工程技术 Q3 ACOUSTICS

Shock and Vibration Pub Date : 2023-11-13 DOI:10.1155/2023/5582345

Ma Xingen, Pan Jun, Zou Qinghai, Li Yongyuan, Feng Fan, Wang Huifeng, Ye Xiangping, Gong Yongchun, Mou Biao

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引用次数: 0

Abstract

Xinzhuang Coal Mine is a typical kilometer-deep rockburst mine in the Ningzheng mining area of China Huaneng Group, which is still in the capital construction period. At present, there are a few studies on the rockburst mechanism and prevention of this mine. In order to explore the occurrence mechanism and main influencing factors of rockburst under the complex geological conditions of large buried depth, thick topsoil, and hard overburden in Xinzhuang Coal Mine, this paper, based on the analysis of the basic geological data of the mine, deeply explores the comprehensive disaster factors of Xinzhuang Coal Mine; then, uses the analytic hierarchy process to carry out quantitative analysis of each disaster factor, and finally, it obtains the impact type and occurrence mechanism of the mine. Through research, it is found that the main disaster factors of Xinzhuang Coal Mine are mining depth, coal seam thickness, coal seam thickness change, tectonic stress field, hard overburden, roadway layout, bottom coal reservation, and tunneling activities. The key to the process of the rockburst disaster in Xinzhuang Coal Mine is the superimposed effect of static and dynamic loads on the roadway surrounding the rock system. The potential rockburst type during excavation and mining is the “high static and dynamic load disturbance” type.

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硬深覆盖层复杂条件下岩爆机理及主要影响因素研究

新庄煤矿是中国华能集团宁正矿区典型的公里深岩爆矿井，目前仍处于基本建设阶段。目前，对该矿岩爆机理及防治的研究较少。为探讨新庄煤矿大埋深、厚表土、硬覆盖层等复杂地质条件下岩爆发生机理及主要影响因素，在分析该矿基础地质资料的基础上，深入探讨了新庄煤矿的综合灾害因素;然后，运用层次分析法对各灾害因素进行定量分析，最终得出该矿山的影响类型和发生机理。通过研究发现，新庄煤矿的主要灾害因素为开采深度、煤层厚度、煤层厚度变化、构造应力场、硬覆盖层、巷道布置、底煤保留、掘进活动等。新庄煤矿冲击地压灾害发生过程的关键是巷道围岩系统中静、动荷载的叠加作用。开挖开采过程中潜在岩爆类型为“高静动扰动”型。

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来源期刊

Shock and Vibration 物理-工程：机械

CiteScore

3.40

自引率

6.20%

发文量

384

审稿时长

3 months

期刊介绍： Shock and Vibration publishes papers on all aspects of shock and vibration, especially in relation to civil, mechanical and aerospace engineering applications, as well as transport, materials and geoscience. Papers may be theoretical or experimental, and either fundamental or highly applied.