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| Research on the impact evaluation index and classification of the surrounding rock stability of coal roadway |
| Du Xingang1, Lv Kun2,3,4, Jia Mingqi2,3,4 |
| 1. Hunchun Mining ( Group ) Baliancheng Coal Industry Co., Ltd., Hunchun 133300, China; 2. China Coal Research Institute, Beijing 100013, China; 3. State Key Laboratory of Coal Mine Disaster Prevention and Control, Beijing 100013，China; 4. Beijing Engineering and Research Center of Mine Safe, Beijing 100013, China |
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Abstract In order to scientifically and quantitatively evaluate the stability of roadway surrounding rock of No.19 coal seam in Balancheng Mine, the geological structure characteristics, physical and mechanical properties and stress state of surrounding rock of roadway surrounding rock were analyzed by comprehensive methods of field measurement, theoretical analysis, laboratory experiment and numerical simulation. Nine main influencing factors including roof strength, floor strength, coal seam strength, tunnel buried depth, initial fall distance of direct roof, ratio of direct roof thickness to mining height, width of roadway protection coal, mining influence coefficient and stress ratio were obtained. A comprehensive index method was proposed for the stability classification of roadway surrounding rock, combining the classification results of roadway surrounding rock stability of gently inclined and inclined coal seam. The stability of roadway surrounding rock was evaluated comprehensively, and the roadway support scheme was optimized based on the classification results. The research results showed that the surrounding rock stability grade of No.19 coal mine roadway belonged to class III, that was, medium stable surrounding rock.
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| [ 1 ] 周 波，袁 亮，薛 生. 巷道围岩结构稳定性控制机理研究综述[ J ]. 煤矿安全，2018，49（ 5 ）：214 - 217，221.
[ 2 ] 袁 亮. 煤炭精准开采科学构想[ J ]. 煤炭学报，2017， 42（ 1 ）：1 - 7.
[ 3 ] 张 军. 深部巷道围岩破坏机理及支护对策研究[ D ]. 北京：中国矿业大学（北京），2010.
[ 4 ] 王国法，庞义辉，任怀伟，等. 煤炭安全高效综采理论、技术与装备的创新和实践[ J ]. 煤炭学报，2018，43（ 4 ）：903 - 913.
[ 5 ] 侯朝炯，郭励生. 煤巷锚杆支护[ M ]. 北京：中国矿业大学出版社，1999.
[ 6 ] 刘 阳. 回采巷道围岩稳定性预测模型及其成熟度[ J ]. 煤矿安全，2018，49（ 8 ）：203 - 205，209.
[ 7 ] 马 浩，曹君林，彭 斌，等. 基于组合赋权 - 云模型巷道围岩稳定性预测评价研究[ J ]. 煤炭技术，2017，36（ 11 ）：84 - 87.
[ 8 ] 冶明清. 深型矿井巷道围岩变形特性的研究[ J ]. 煤炭与化工，2020，43（ 7 ）：7 - 10.
[ 9 ] 张 涛，郝兵元，钱翰飞. 基于模糊聚类综合分析的煤巷围岩稳定性分类研究[ J ]. 中国矿业，2020，29 （ 4 ） ：116 - 119，125.
[ 10 ] 杨仁树，王茂源，马鑫民，等. 煤巷围岩稳定性分类研究[ J ]. 煤炭科学技术，2015，43（ 10 ）：40 - 45，92.
[ 11 ] 薛彦平，许 广，唐又驰. 基于AHP的深部巷道围岩稳定性影响因素评价分析[ J ]. 数学的实践与认识，2013，43（ 6 ）：157 - 164.
[ 12 ] 白东东，冀 兆，李 鹏，等. 半孤岛工作面冲击危险综合指数法评价与防治技术[ J ]. 煤炭科学技术， 2020，48（ S2 ）：188 - 193.
[ 13 ] 钱鸣高. 矿山压力及其控制[ M ]. 北京：煤炭工业出版社，1991. |
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