| 煤矿深井大断面巷道交岔点破坏形式与施工技术 |
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| 引用本文： | 冷自超.煤矿深井大断面巷道交岔点破坏形式与施工技术[J].陕西煤炭,2011,30(2). |
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| 作者姓名： | 冷自超 |
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| 作者单位： | 安徽淮北矿业集团公司,刘店煤矿,安徽淮北235000 |
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| 摘 要： | 煤矿深井大断面交岔点结构复杂、应力集中程度高,支护难度大,通过现场调查交岔点的破坏形式,分析了破坏机理,采用"先让后抗、适当让压"的支护思路,实施锚固索耦合支护及底角锚杆控制底臌,采用"双控锚杆"降低了独立岩柱长细比,提高了交岔点"牛鼻子"部位的支撑能力.将实验方案应用于工程实例,取得了良好的支护效果.
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| 关 键 词： | 深部 大断面交岔点 应力集中 施工技术 |
Failure forms and construction technology on the intersection of large-section roadway in deep mine |
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| Authors: | LENG Zi-chao |
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| Affiliation: | LENG Zi-chao(Liudian Coal Mine,Anhui Huaibei Mining Group Co.,Ltd,Huaibei 235000,China) |
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| Abstract: | The intersection of large-section roadway in deep mine has the characteristics of complex structure,high stress concentration and difficult to support.By surveying the failure forms and analyzing the failure mechanism in the intersection,the paper proposed the coupling support technology for improving the support intensity of intersection.The support plan was used in practice and achieved a good supporting effect. |
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| Keywords: | deep mine intersection of large-section stress concentration construction technology |
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