| 大埋深软岩高地应力岩巷支护技术研究 |
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| 引用本文： | 魏垂胜.大埋深软岩高地应力岩巷支护技术研究[J].中州煤炭,2018,0(2):179-184. |
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| 作者姓名： | 魏垂胜 |
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| 作者单位： | （河南能源化工集团有限公司 永城煤电控股集团有限公司 车集煤矿，河南 永城 476600） |
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| 摘 要： | 针对车集煤矿28采区三条下山巷道变形失修严重的现状，采用巷道失修共性特点查找、统计及原因分析的方法，进行了大埋深软岩高地应力岩巷支护技术的研究。为实现支护效果，采用了高强锚索+“四高”锚杆+柔性梯子梁+高应力巷道底板卸压+底板注浆锚索支护技术，同时在喷浆时喷浆料中掺入聚丙烯增强增韧纤维，施工过程中推广实施“先喷后锚”施工工艺。结果表明:该种巷道支护方式提高了支护强度及岩层自身的稳定性，聚丙烯增强增韧纤维有效地阻止喷层内部裂纹的产生和扩展，其韧性能适应软岩巷道大变形的特点，“先喷后锚”施工工艺的实施提高了巷道内在施工质量，对大埋深软岩高地应力岩巷支护具有较强的指导意义。
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| 关 键 词： | 柔性梯子梁 底板注浆锚索 聚丙烯增强增韧纤维 先喷后锚 “四高”锚索 |
Research on supporting technology of high stress rock roadway in deep buried soft rock |
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| Wei Chuisheng. Research on supporting technology of high stress rock roadway in deep buried soft rock[J].Zhongzhou Coal,2018,0(2):179-184. |
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| Authors: | Wei Chuisheng |
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| Affiliation: | （Juji Coal Mine，Yongcheng Coal and Electricity Holding Group Co.，Ltd.，HNEC，Yongcheng 476600，China） |
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| Abstract: | In view of the serious deformation of three downhill roadways in 28 mining districts of Juji Coal Mine，the condition of disrepair is serious，adopting the methods of searching，statistics and analysis of the common characteristics of roadway disrepair，the research on the support technology of the large and deep soft rock high geostress rock roadway was carried out.In order to realize supporting effect，adopt high strength anchor + "four high" bolt + flexible ladder beam bottom should be high stress roadway +supporting technology of grouting anchor cable unloading pressure ，while cement spraying material mixed with polypropylene fiber reinforcement in the construction process，to promote the implementation of the "first after the spray anchor construction process.The results show that the method improves the stability of roadway support strength and rock itself，reinforcing and toughening polypropylene fiber to prevent the emergence and expansion of spray layer internal cracks effectively，its toughness can adapt to the characteristics of soft rock roadway with large deformation，"after the implementation of the first spray anchor construction technology to improve the quality of the internal construction of roadway，to make the roadway face a new look，it has a strong guiding significance for large buried soft rock，high rock and stress rock roadway support. |
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| Keywords: | ,flexible ladder beam, bottom grouting anchor cable, polypropylene reinforcing and toughening fiber, first spray anchor, "four high" anchor rope |
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