近直立特厚煤层分段综放开采巷道布置研究

doi:10.16265/j.cnki.issn 1003-3033.2020.10.014

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (10): 96-104.doi: 10.16265/j.cnki.issn 1003-3033.2020.10.014

近直立特厚煤层分段综放开采巷道布置研究

钟涛平¹, 李振雷¹ 讲师, 刘旭东², 宋大钊¹ 教授, 冯攀飞², 李东辉¹

1 北京科技大学土木与资源工程学院,北京 100083;
2 国家能源集团神华新疆能源有限责任公司,新疆乌鲁木齐 830027

收稿日期:2020-07-30 修回日期:2020-09-20 出版日期:2020-10-28 发布日期:2021-07-15
作者简介:钟涛平 (1996—),男,江西抚州人,硕士研究生,研究方向为煤岩动力灾害。E-mail:17801051815@163.com。
基金资助:
国家自然科学基金资助(5191101594);国家自然科学基金国际合作与交流项目资助(52011530037);中央高校基本科研业务费专项资金资助 (FRF-TP-19-025A2)。

Study on layout of roadway in sublevel fully mechanized caving mining of near-vertical and extremely-thick coal seam

ZHONG Taoping¹, LI Zhenlei¹, LIU Xudong², SONG Dazhao¹, FENG Panfei², LI Donghui¹

1 School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2 Shenhua Xinjiang Energy Company Limited, CHN ENERGY, Urumqi Xinjiang 830027, China

Received:2020-07-30 Revised:2020-09-20 Online:2020-10-28 Published:2021-07-15

摘要/Abstract

摘要： 为优化近直立特厚煤层综放分段开采巷道布置,以乌东煤矿南采区近直立煤层开采工程为例,运用理论分析、数值模拟等方法,研究全煤巷道和半煤岩巷道围岩应力和位移分布特征及巷道稳定性。顶板侧巷道围岩应力集中程度明显高于底板侧巷道;布置全煤巷道时,巷道变形程度较大而应力集中程度较低,影响巷道稳定主导因素为围岩变形;布置半煤岩巷道时,巷道变形程度较小而应力集中程度较高,影响巷道稳定主导因素为围岩应力。研究结果表明:综合考虑巷道围岩变形大小、应力集中程度和围岩稳定性控制等因素,近直立特厚煤层应采用不留煤皮的全煤巷道。

关键词: 近直立煤层, 巷道布置, 全煤巷道, 半煤岩巷道, 留煤厚度, 岩巷宽度

Abstract: In order to optimize layout of roadways in sublevel fully mechanized caving mining of near-vertical and extremely-thick coal seam, with mining project of near-vertical coal seams in Wudong coal mine as engineering background, theoretical analysis, numerical simulation and other methods were adopted to study distribution law of surrounding rock stress and displacement as well as stability of whole-coal and semi-coal roadways. Stress concentration of surrounding rock for roof side roadway was significantly higher than that for floor side one. In case of whole-coal roadway, its deformation was greater while stress concentration was relatively lower, and deformation of surrounding rock made a leading factor that affects its stability. However, for semi-coal roadway, stress of surrounding rock became a major factor as deformation of roadway was smaller while stress concentration is relatively higher. The results show that with deformation, stress concentration and stability control of surrounding rocks taken into consideration, a whole-coal roadway without retained coal skin would be a better option for near-vertical and extremely-thick coal seams.

Key words: near-vertical coal seam, roadway layout, whole-coal roadway, semi-coal roadway, thickness of retained coal, width of rock roadway

中图分类号:

X936

钟涛平, 李振雷, 刘旭东, 宋大钊, 冯攀飞, 李东辉. 近直立特厚煤层分段综放开采巷道布置研究[J]. 中国安全科学学报, 2020, 30(10): 96-104.

ZHONG Taoping, LI Zhenlei, LIU Xudong, SONG Dazhao, FENG Panfei, LI Donghui. Study on layout of roadway in sublevel fully mechanized caving mining of near-vertical and extremely-thick coal seam[J]. China Safety Science Journal, 2020, 30(10): 96-104.

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近直立特厚煤层分段综放开采巷道布置研究

Study on layout of roadway in sublevel fully mechanized caving mining of near-vertical and extremely-thick coal seam

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