| 象山矿无煤柱沿空留巷成套技术研究 |
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| 引用本文： | 王苏健,王翔宇,刘效贤,钱万学,蔚保宁.象山矿无煤柱沿空留巷成套技术研究[J].煤炭工程,2021,53(4):33-38. |
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| 作者姓名： | 王苏健 王翔宇 刘效贤 钱万学 蔚保宁 |
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| 作者单位： | 1. 陕西煤业化工技术研究院有限责任公司;2. 陕煤化集团韩城矿业公司; |
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| 摘 要： | 基于切顶卸压沿空留巷理论及象山矿现场实践，以3号煤21311辅助进风巷切顶沿空留巷为研究对象，围绕三软煤层切顶卸压沿空留巷主要影响因素，形成一整套集巷道支护、井下设备快速运输、采空区封堵于一体的沿空留巷成套技术。对巷道表面位移及新型单体支柱支承力进行测量，研究沿空巷道在切顶卸压工艺下的围岩及压力变化规律，对新型挡矸柱挡矸效果进行分析，结果表明：单体支承压力与工作面距离成正比，离工作面越近，巷道压力越大。
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| 关 键 词： | 切顶卸压 沿空留巷 采空区封堵 表面喷涂 井下快速运输 单体支柱 |
| 收稿时间： | 2020-06-16 |
| 修稿时间： | 2020-09-11 |
Study on complete set of technology of gob side entry retaining without coal pillar in Xiangshan mine |
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| Abstract: | Based on the theory of roof cutting and pressure relief along goaf and the practice of Xiangshan mine, taking No.3 coal mine 21311 auxiliary air intake roadway as the research object, a complete set of goaf retaining technology, which integrates roadway support, underground equipment rapid transportation and goaf plugging, is formed around the main influencing factors of roof cutting and pressure relief along goaf. The displacement of the roadway surface and the supporting force of the new single pillar are measured, the law of the surrounding rock and the pressure change of the roadway along the goaf under the technology of roof cutting and pressure relief is studied, and the effect of the new gangue retaining pillar is analyzed. The results show that the supporting pressure of the single pillar is directly proportional to the distance of the working face, the closer it is to the working face, the greater the roadway pressure, and vice versa. |
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