| 构造复杂区域膨胀软岩巷道底鼓控制研究 |
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| 引用本文： | 张后全,韩立军,贺永年,邵鹏,蒋斌松.构造复杂区域膨胀软岩巷道底鼓控制研究[J].采矿与安全工程学报,2011,28(1):16-21,27. |
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| 作者姓名： | 张后全 韩立军 贺永年 邵鹏 蒋斌松 |
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| 作者单位： | 中国矿业大学深部岩土力学与地下工程国家重点实验室,力学与建筑工程学院,江苏,徐州,221008 |
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| 基金项目： | 国家自然科学基金项目，国家重点基础研究发展计划(973)项目 |
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| 摘 要： | 某矿-400 m水平水仓位于复杂地质构造区域内且底板极具亲水膨胀性,在高构造应力、高膨胀应力作用下,原有普通锚网索喷支护方案无法维持水仓底板的基本稳定;根据现场地质条件,针对原支护方案的不足,分析了水仓底鼓变形的主要影响因素,并对底鼓变形全过程进行了数值模拟.提出采用"先刚后让再抗"的底鼓控制技术途径,对水仓围岩采取锚注+全断面钢筋混凝土砌碹支护总体方案,并辅助聚乙烯泡沫缓冲层卸压措施.通过模型试验验证了这种"刚让抗"多级支护结构解决高应力状态下大变形问题的有效性.研究结果表明:巷道底鼓变形从巷道整体压缩变形开始,底板在严重水平挤压变形后发生破坏而隆起;对松动围岩注浆加固后,可有效提高围岩的自身承载能力和支护结构的整体性;采用"刚让抗"多级支护结构,可有效控制巷道的严重底鼓变形.
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| 关 键 词： | 膨胀软岩 底鼓 锚注 砌碹 |
Floor Heave Control in Roadways with Soft-and-Swelling Rocks in Complicated Structural Area |
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| ZHANG Hou-quan,HAN Li-jun,HE Yong-nian,SHAO Peng,JIANG Bin-song.Floor Heave Control in Roadways with Soft-and-Swelling Rocks in Complicated Structural Area[J].Journal of Mining and Safety Engineering,2011,28(1):16-21,27. |
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| Authors: | ZHANG Hou-quan HAN Li-jun HE Yong-nian SHAO Peng JIANG Bin-song |
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| Affiliation: | ZHANG Hou-quan,HAN Li-jun,HE Yong-nian,SHAO Peng,JIANG Bin-song(State Key Laboratory for Geomechanics and Deep Underground Engineering,School of Mechanics andCivil Engineering,China University of Mining & Technology,Xuzhou,Jiangsu 221008,China) |
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| Abstract: | The sump of a certain coal mine at-400 m level is located in an area where the geological structure is complicated and its floor strata have a swelling characteristic when water is meet.Under a high tectonic stress and high expansion stress,previous common anchoring-netting-bolting and pre-stressed cabling support can not at all keep its indispensable stability of surrounding rock in the sump.Based on the survey of in-situ geological conditions and the shortcoming analysis of previous support design,we anal... |
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| Keywords: | swelling soft rock floor heave bolting-grouting arch walling |
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