| 深井沿空留巷充填区顶板支护技术 |
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| 引用本文： | 郑西贵,白云勃.深井沿空留巷充填区顶板支护技术[J].煤矿开采,2012,17(3):42-45. |
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| 作者姓名： | 郑西贵 白云勃 |
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| 作者单位： | 中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008;中国矿业大学矿业工程学院,江苏徐州221008 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目，中央高校基本科研业务费专项资金 |
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| 摘 要： | 针对深井高地应力条件下沿空留巷过程中沿空巷道直接顶顶板松散、破碎、长期大变形的现象,提出了沿空巷道充填区顶板支护成套技术。该技术包括沿空巷道围岩时间、空间非线性变化规律,充填区顶板受力特性和分区域支护。在分析深井巷道围岩运移规律和充填区直接顶受力特性基础上,认为充填区直接顶为顶板控制的关键区域之一。将充填区顶板细化为4部分:实体煤区域,超前撕帮区域,工作面液压支架区域和已充填区域,并分别提出针对性的支护技术。经朱集1111(1)工作面沿空留巷工业实践检验,效果良好。理论成果对于相似条件的工程具有借鉴指导意义。
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| 关 键 词： | 深井 沿空留巷 充填区 顶板支护 分区域支护 |
Technology of Roof Supporting at Stowing Area in Deep Roadway Retained along Gob |
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| ZHENG Xi-gui
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BAI Yun-bo.Technology of Roof Supporting at Stowing Area in Deep Roadway Retained along Gob[J].Coal Mining Technology,2012,17(3):42-45. |
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| Authors: | ZHENG Xi-gui BAI Yun-bo |
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| Affiliation: | 1,2(1.State Key Laboratory of Coal Resource & Safe Mining,China University of Mining & Technology,Xuzhou 221008,China;2.School of Mines,china University of Mining & Technology,xuzhou 221008,China) |
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| Abstract: | In deep mine with high geo-stress state,immediate roof over roadway retained along gob is loose and cracked which result in long-time large deformation.Technology of roof supporting at stowing area in roadway retained along gob was put forward to solve the problem.The technology included analysis of surrounding rock time-space nonlinear variation rule,roof stress characteristic and sub-region supporting.On the basis of analyzing surrounding rock movement rule and immediate roof stress rule,immediate roof at stowing area was found as a key to controlling roof.Immediate roof at stowing area was classified into 4 parts:undisturbed coal area,advanced side failure area,powered support area and stowed area.Supporting technologies for every part were put forward.Practice in 1111(1) mining face of Zhuji Colliery showed that its effect was excellent and it could provide reference for similar engineering. |
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| Keywords: | deep mine retaining roadway along gob stowing area roof supporting sub-region supporting |
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