| 浅部煤层壁式煤柱支撑法开采大面积垮落机理 |
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| 引用本文： | 张嘉凡,石平五.浅部煤层壁式煤柱支撑法开采大面积垮落机理[J].西安科技大学学报,2003,23(4):365-368. |
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| 作者姓名： | 张嘉凡 石平五 |
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| 作者单位： | 1. 西安科技大学,基础课部,陕西,西安,710054
2. 西安科技大学,能源学院,陕西,西安,710054 |
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| 基金项目： | 陕西省重点实验室研究项目(02JS44),陕西省教育厅重点项目(012c09) |
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| 摘 要： | 中国西部有一批获得正常经营权的小矿井。他们在采用长壁煤柱支撑法进行开采时,常发生大面积顶板垮落事故。文中结合陕北郭家湾煤矿的实例进行数值分析,研究顶板大面积垮落的机理,认为一定极限条件下在顶板作用下的支撑煤柱群产生大变形,引起顶板变形破坏并形成"六面体"。在"六面体"重压下煤柱群整体塌落,造成大面积顶板垮落。区分隔离煤柱和区内煤柱,选择合理开采参数,是防止灾变的关键。
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| 关 键 词： | 煤柱支撑法 大面积垮落 隔离煤柱 区内煤柱 |
| 文章编号： | 1671-1912(2003)04-0365-04 |
| 修稿时间： | 2003年3月4日 |
Mechanism on falling of large area during wall mining in the sallow seam |
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| ZHANG Jia-fan,SHI Ping-wu.Mechanism on falling of large area during wall mining in the sallow seam[J].JOurnal of XI’an University of Science and Technology,2003,23(4):365-368. |
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| Authors: | ZHANG Jia-fan SHI Ping-wu |
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| Institution: | ZHANG Jia-fan~1,SHI Ping-wu~2 |
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| Abstract: | Some fall of large area have happened during long wall mining in a small mine of the west region. Large area falling mechanism has been studied by numerical analysis of Guojiawan in North Shannxi. Large distortion at supporting mine pillars on roof force forms hexahedron and large area roof fall under stress within certain limit. Dividing partition coal pillars and region coal pillars, and selecting parameter are key to prevent disaster. |
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| Keywords: | coal pillars supporting fall of large area partition coal pillars region coal pillars |
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