| 综放沿空小断面留巷技术研究 |
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| 引用本文： | 曹胜根,刘卫群. 综放沿空小断面留巷技术研究[J]. 中国矿业大学学报, 2004, 33(6): 651-655 |
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| 作者姓名： | 曹胜根 刘卫群 |
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| 作者单位： | 1. 中国矿业大学,能源与安全工程学院,江苏,徐州,221008
2. 中国矿业大学,理学院,江苏,徐州,221008 |
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| 基金项目： | 国家杰出青年科学基金项目(50225414) |
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| 摘 要： | 随着开采强度的增加，综放工作面的瓦斯超限问题日益突出．以王庄煤矿5201综放面为例，提出采用综放沿空小断面留巷技术，布置J型通风系统，治理综放工作面瓦斯超限．由关键块的分析和数值模拟结果，确定了综放沿空小断面留巷的断面形状，给出了斜梁的合理支护设计．矿压观测结果表明，留巷小断面变形以及留巷煤帮深部位移有较好的收敛性，能够满足工作面抽放瓦斯的需要．
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| 关 键 词： | 综放工作面 放顶煤开采 开采强度 沿空留巷 |
| 文章编号： | 1000-1964(2004)06-0651-05 |
| 修稿时间： | 2004-03-12 |
Technique of Small Section Entry Retaining Along Gob Side in Fully-Mechanized Top-Coal Caving Face |
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| CAO Sheng-gen,LIU Wei-qun. Technique of Small Section Entry Retaining Along Gob Side in Fully-Mechanized Top-Coal Caving Face[J]. Journal of China University of Mining & Technology, 2004, 33(6): 651-655 |
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| Authors: | CAO Sheng-gen LIU Wei-qun |
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| Abstract: | Due to the increasing of mining production, the problem of gas consistence exceeding normal value is becoming serious in fully-mechanized top-coal caving face. Taking 5201 face, Wangzhuang coal mine as an example, the measures of preventing gas consistence exceeding normal value were put forward, that is, applying small section entry retaining along gob side and layout of J-shape ventilation system. The entry section shape and the reasonable design of inclined beam were determined according to the analysis of key blocks and the results of numerical simulation. Results of ground pressure observations indicate that there are good convergence in the small section entry deformation and the rib internal displacement. These can ensure the needs of gas drainage in coal face. |
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| Keywords: | fully-mechanized top-coal caving small section entry retaining along gob side J-shape ventilation system ground pressure controlling |
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