高黎贡山隧道1~#竖井(副井)突水淹井封堵施工技术
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摘要
为解决高黎贡山隧道1#竖井(副井)掘砌时发生的高压突水淹井难题,根据地层特点和施工情况,分析突涌水原因;类比其他行业深井淹井突水口封堵施工经验,提出水下混凝土直接封堵、静水压抛碴注浆封堵和改性水泥浆止水垫与注浆碎石堵水层相结合封堵3种方案并进行比选,选用在静水压状态下采用改性水泥浆止水垫与注浆碎石堵水层相结合封堵的方案,介绍其施工控制技术,并通过抽排水施工对封堵效果进行验证。结果表明:1)改性水泥浆止水垫与注浆碎石堵水层相结合封堵方案中采取的改性水泥止浆垫参数设计、构筑止浆垫施工工艺、改性水泥浆的配比等施工技术能够满足深大竖井突水口封堵施工要求; 2)深水承压摄像头能够对施工过程进行有效监控,实施控制性排水能够准确检验封堵效果; 3) 50 m厚改性水泥浆止水层能够达到封堵突水口的预期目的,完成后经抽水验证可知突水口封水率达99%,封堵效果较好。
High pressure water inrush occurred to shaft No.1(auxiliary shaft) construction of Gaoligongshan Tunnel and the shaft was flooded.In this paper,the causes for the water inrush are analyzed based on strata characteristics and construction situation;and then 3 sealing schemes,i.e.underwater concrete sealing,grouting under hydrostatic pressure and combined sealing of modified cement slurry waterstop layer and grouting stone sealing layer,are proposed by comparing with shaft sealing experience of relevant industry;finally,the construction control technology is introduced,and the sealing effect is verified by pumping and drainage construction.The treatment results show that:(1) The sealing scheme that combined modified cement slurry waterstop layer and grouting stone sealing layer is selected;and the parameter design of modified cement slurry waterstop layer,the slurry waterstop layer construction technology and the cement slurry mixing proportion of the selected scheme can meet the sealing requirement of water inrush in deep and large vertical shaft.(2) The deepwater pressure camera can monitor the construction process effectively,and the sealing effect can be checked accurately by controlled water drainage.(3) The sealing effect of modified cement slurry waterstop layer with thickness of 50 m is good,reaching 99% sealing rate.
High pressure water inrush occurred to shaft No.1(auxiliary shaft) construction of Gaoligongshan Tunnel and the shaft was flooded.In this paper,the causes for the water inrush are analyzed based on strata characteristics and construction situation;and then 3 sealing schemes,i.e.underwater concrete sealing,grouting under hydrostatic pressure and combined sealing of modified cement slurry waterstop layer and grouting stone sealing layer,are proposed by comparing with shaft sealing experience of relevant industry;finally,the construction control technology is introduced,and the sealing effect is verified by pumping and drainage construction.The treatment results show that:(1) The sealing scheme that combined modified cement slurry waterstop layer and grouting stone sealing layer is selected;and the parameter design of modified cement slurry waterstop layer,the slurry waterstop layer construction technology and the cement slurry mixing proportion of the selected scheme can meet the sealing requirement of water inrush in deep and large vertical shaft.(2) The deepwater pressure camera can monitor the construction process effectively,and the sealing effect can be checked accurately by controlled water drainage.(3) The sealing effect of modified cement slurry waterstop layer with thickness of 50 m is good,reaching 99% sealing rate.
引文
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[7]柴敬,袁强,王帅,等.白垩系含水地层立井突水淹井治理技术[J].煤炭学报.2016,41(2):338.CHAI Jing,YUAN Qiang,WANG Shuai,et al.Water inrush control and restoration of shaft construction in cretaceous aquifer[J].Journal of China Coal Society,2016,41(2):338.
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[9]付仲润,韩忠存.某长江穿越隧道竖井淹井处理技术[J].隧道建设,2006,26(2):57.FU Zhongrun,HAN Zhongcun.Shaft flooding control technology of tunnel crossing Yangtze River[J].Tunnel Construction,2006,26(2):57.
[10]储党生,张学峰.祁东煤矿风井突水淹井分析与治理[J].江苏煤炭,1999(3):13.CHU Dangsheng,ZHANG Xuefeng.Analysis and treatment of water inrush occurs in ventilation vertical shaft of Qidong Coal Mine[J].Jiangsu Coal,1999(3):13.
[11]武强.我国矿井水防控与资源化利用的研究进展、问题和展望[J].煤炭学报,2014,39(5):795.WU Qiang.Progress,problem and prospects of prevention and control technology of mine water reutilization in China[J].Journal of China Coal Society,2014,39(5):795.
[12]武强,赵苏启,孙文洁,等.中国煤矿水文地质类型划分与特征分析[J].煤炭学报,2013,38(6):901.WU Qiang,ZHAO Suqi,SUN Wenjie,et al.Classification of the hydrogeological type of coal mine and analysis of its characteristics in China[J].Journal of China Coal Society,2013,38(6):901.
[13]王厚良,王松青.深立井井筒突水淹井事故处理[J].建井技术,2007,28(4):3.WANG Houliang,WANG Songqing.Water inrush accident treatment of deep vertical shaft[J].Mine Construction Technology,2007,28(4):3.
[14]仝洪昌.立井井筒突水淹井事故的快速处理[J].建井技术,2008,29(1):3.TONG Hongchang.Rapid treatment measures for water inrush accident of vertical shaft[J].Mine Construction Technology,2008,29(1):3.
[15]张向东,张建俊.深立井突水淹井治理及恢复技术研究[J].煤炭学报,2013,38(12):2189.ZHANG Xiangdong,ZHANG Jianjun.Techniques applied to water-inrush control and side-well restoration in deep vertical shaft[J].Journal of China Coal Society,2013,38(12):2189.
[2]张志龙,高延法,武强,等.浅谈矿井水害立体防治技术体系[J].煤炭学报,2013,38(3):378.ZHANG Zhilong,GAO Yanfa,WU Qiang,et al.Discussion on the technical system of solid prevention and control on mine flooding[J].Journal of China Coal Society,2013,38(3):378.
[3]虎维岳.深部煤炭开采地质安全保障技术现状与研究方向[J].煤炭科学技术,2013,41(8):1.HU Weiyue.Study orientation and present status of geological guarantee technologies to deep mine coal mining[J].Coal Science and Technology,2013,41(8):1.
[4]虎维岳,田干.我国煤矿水害类型及其防治对策[J].煤炭科学技术,2010,38(1):92.HU Weiyue,TIAN Gan.Mine water disaster type and prevention and control countermeasures in China[J].Coal Science and Technology,2010,38(1):92.
[5]董书宁.对中国煤矿水害频发的几个关键科学问题的探讨[J].煤炭学报,2010,35(1):66.DONG Shuning.Some key scientific problem on water hazards frequently happend in China's coal mines[J].Journal of China Coal Society,2010,35(1):66.
[6]沈季良.建井工程手册[M].北京:煤炭工业出版社,1986.SHEN Jiliang.Mine construction engineering handbook[M].Beijing:China Coal Industry Publishing House,1986.
[7]柴敬,袁强,王帅,等.白垩系含水地层立井突水淹井治理技术[J].煤炭学报.2016,41(2):338.CHAI Jing,YUAN Qiang,WANG Shuai,et al.Water inrush control and restoration of shaft construction in cretaceous aquifer[J].Journal of China Coal Society,2016,41(2):338.
[8]方正.冬瓜山铜矿千米竖井工作面突水淹井及其治理[J].矿业研究与开发,1998(6):4.FANG Zheng.Water irruption flooding on working face of1 000 m deep shaft and its control in Dongguashan Copper Mine[J].Mining Research and Development,1998(6):4.
[9]付仲润,韩忠存.某长江穿越隧道竖井淹井处理技术[J].隧道建设,2006,26(2):57.FU Zhongrun,HAN Zhongcun.Shaft flooding control technology of tunnel crossing Yangtze River[J].Tunnel Construction,2006,26(2):57.
[10]储党生,张学峰.祁东煤矿风井突水淹井分析与治理[J].江苏煤炭,1999(3):13.CHU Dangsheng,ZHANG Xuefeng.Analysis and treatment of water inrush occurs in ventilation vertical shaft of Qidong Coal Mine[J].Jiangsu Coal,1999(3):13.
[11]武强.我国矿井水防控与资源化利用的研究进展、问题和展望[J].煤炭学报,2014,39(5):795.WU Qiang.Progress,problem and prospects of prevention and control technology of mine water reutilization in China[J].Journal of China Coal Society,2014,39(5):795.
[12]武强,赵苏启,孙文洁,等.中国煤矿水文地质类型划分与特征分析[J].煤炭学报,2013,38(6):901.WU Qiang,ZHAO Suqi,SUN Wenjie,et al.Classification of the hydrogeological type of coal mine and analysis of its characteristics in China[J].Journal of China Coal Society,2013,38(6):901.
[13]王厚良,王松青.深立井井筒突水淹井事故处理[J].建井技术,2007,28(4):3.WANG Houliang,WANG Songqing.Water inrush accident treatment of deep vertical shaft[J].Mine Construction Technology,2007,28(4):3.
[14]仝洪昌.立井井筒突水淹井事故的快速处理[J].建井技术,2008,29(1):3.TONG Hongchang.Rapid treatment measures for water inrush accident of vertical shaft[J].Mine Construction Technology,2008,29(1):3.
[15]张向东,张建俊.深立井突水淹井治理及恢复技术研究[J].煤炭学报,2013,38(12):2189.ZHANG Xiangdong,ZHANG Jianjun.Techniques applied to water-inrush control and side-well restoration in deep vertical shaft[J].Journal of China Coal Society,2013,38(12):2189.