| 白皎矿保护层沿空切顶成巷无煤柱开采技术研究 |
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| 引用本文： | 张国锋,何满潮,俞学平,黄正谷.白皎矿保护层沿空切顶成巷无煤柱开采技术研究[J].采矿与安全工程学报,2011,28(4):511-516. |
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| 作者姓名： | 张国锋 何满潮 俞学平 黄正谷 |
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| 作者单位： | 1. 中国矿业大学力学与建筑工程学院,北京,100083
2. 四川芙蓉集团实业有限公司,四川宜宾,644501 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2006CB202200) |
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| 摘 要： | 为解决白皎煤矿保护层留煤柱引发的采空区瓦斯积聚、瓦斯突出及应力集中对近距离煤层开采引起的灾害问题,提出了深井工作面卸压沿空切顶成巷无煤柱开采方法,对沿空巷道顶板实施超前预裂,切断沿空巷道顶板与采场直接顶、基本顶的联系,在周期来压作用下采场顶板沿预裂面切落形成巷帮,隔断采空区并支撑上位移动岩层,改善了巷道围岩应力环境,将巷道围岩应力集中转移到深部,实现巷道稳定.该方法采用超前双向聚能张拉爆破沿走向预裂顶板,能减小对顶板的爆破损伤;采用巷内恒阻大变形锚杆(索)+巷旁锚索加强支护+巷旁密集单体液压支柱加强切顶联合支护技术,适应巷内围岩大变形及切顶冲击变形的要求,以控制巷道围岩稳定;开发了远程矿压监测系统,实时监控留巷过程顶板稳定性.基于该方法的配套关键技术在白皎矿2422保护层开采工作面机巷得到成功应用,为深部煤矿长壁工作面提供一种经济有效的无煤柱开采新理论与技术.
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| 关 键 词： | 沿空留巷 无煤柱开采 恒阻大变形锚索 双向聚能爆破 超前预裂 远程矿压监测 |
Research on the Technique of No-Pillar Mining with Gob-Side Entry Formed by Advanced Roof Caving in the Protective Seam in Baijiao Coal Mine |
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| ZHANG Guo-feng,HE Man-chao,YU Xue-ping,HUANG Zheng-gu.Research on the Technique of No-Pillar Mining with Gob-Side Entry Formed by Advanced Roof Caving in the Protective Seam in Baijiao Coal Mine[J].Journal of Mining and Safety Engineering,2011,28(4):511-516. |
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| Authors: | ZHANG Guo-feng HE Man-chao YU Xue-ping HUANG Zheng-gu |
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| Affiliation: | ZHANG Guo-feng1,HE Man-chao1,YU Xue-ping2,HUANG Zheng-gu2(1.Institute of Geotechnical engineering,China University of Mining & Technology,Beijing 100083,China,2.Sichuan,Furong Industry Limited Company,Yibin,Sichuan 644501,China) |
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| Abstract: | To solve the disasters during the mining of close distance seams,which are affected by gas accumulation in goaf,gas outburst and stress concentration caused by coal pillars support mining in the protective seam in Baijiao coal mine,we proposed the method of no-pillar mining with gob-side entry formed by forced roof caving in the deep-level faces.After cutting off the connection between the roof above gob-side entry and the immediate and main roofs,by advanced pre-split blasting in the roof above gob-side en... |
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| Keywords: | gob-side entry retaining no-pillar mining constant resistance and large deformation cable bilateral cumulative explosion advanced pre-splitting remote ground pressure monitoring |
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