富水破碎围岩隧道施工工法ADINA数值模拟
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摘要
本文基于乐园隧道富水破碎带施工技术为背景,主要研究了富水破碎隧道如何进行合理防排水和如何选择最优开挖方法。对于隧道防排水选择以"以堵为主、综合治理"为原则,通过超前地质预报探明掌子面前方富水破碎情况,对富水破碎带实施注浆进行防水,并于破碎带中线布置排水孔进行适当排水;通过非线性有限元软件ADINA分别对全断面法、台阶法和分部开挖法进行开挖模拟,对比分析不同开挖方法下的地层沉降、锚杆轴力变化等方面。结合数值模拟结果,考虑到各种开挖方法施工安全性与对掌子面稳定性影响,乐园隧道围岩破碎带采用台阶法施工实际意义最大。
Based on the case project of Leyuan tunnel, we studyed how to select the reasonable measure of waterproof and drainage and the optimal excavation method of tunnel when the surrounding rock broken and the water rich;"Plugging dominantly and treating synthetically" is chose to be the principle to the waterproof and drainage of tunnel. Proving the situation of water rich and broken of surrounding rock in front of the tunnel face through geological forecast, and then proceeding pouring to the disease area. In addition, decorating some drainage holes in the middle of the disease area to let out some water;Simulating the excavation of tunnel by the method of entire section method, bench method and partial excavation method through the nonlinear finite element software ADINA. Analysis of subsidence of strata and bolt axial force in different working conditions.In combination with the result of numerical analysis, and considering the security of working and the influence to the stability of tunnel face,the most meaningful working condition to the surrounding rock which is broken is bench method.
Based on the case project of Leyuan tunnel, we studyed how to select the reasonable measure of waterproof and drainage and the optimal excavation method of tunnel when the surrounding rock broken and the water rich;"Plugging dominantly and treating synthetically" is chose to be the principle to the waterproof and drainage of tunnel. Proving the situation of water rich and broken of surrounding rock in front of the tunnel face through geological forecast, and then proceeding pouring to the disease area. In addition, decorating some drainage holes in the middle of the disease area to let out some water;Simulating the excavation of tunnel by the method of entire section method, bench method and partial excavation method through the nonlinear finite element software ADINA. Analysis of subsidence of strata and bolt axial force in different working conditions.In combination with the result of numerical analysis, and considering the security of working and the influence to the stability of tunnel face,the most meaningful working condition to the surrounding rock which is broken is bench method.
引文
[1]刘光明.软弱破碎围岩隧道大变形机理及控制措施研究[D].中南大学,2012.
[2]李燕生.复杂地质条件下彭水隧道施工技术研究[D].天津大学,2006.
[3]陈其亮.涌水隧道施工技术控制方法[J].山西建筑,2012,29:208-209.
[4]宋金峰.圆梁山隧道注浆堵水方案及施工技术研究[D].中国地质大学(北京),2011.
[5]张松.关山隧道富水断层破碎围岩施工技术研究[J].中国新技术新产品,2012,21:108.
[6]李世才.桃树坪隧道富水未成岩粉细砂试验段施工技术[J].现代隧道技术,2012,04:111-119,139.
[7]孟君祥.乌鞘岭特长隧道注浆堵水施工技术研究[J].铁道建筑技术,2007,03:52-54.
[8]张成平,张顶立,王梦恕,项彦勇.高水压富水区隧道限排衬砌注浆圈合理参数研究[J].岩石力学与工程学报,2007,11:2270-2276.
[9]李杰.8号斜井及正洞富水软弱破碎地质隧道施工技术[J].铁道标准设计,2005,09:59-62.
[10]罗玉虎,李丹,刘亮,胡礼忠.摩天岭隧道涌水原因分析及处治措施[J].地下空间与工程学报,2011,02:408-412.
[11]中华人民共和国行业标准编写组.TB10204-2002铁路隧道施工规范[S].北京:中国铁道出版社.
[12]王伟锋,毕俊丽.软岩浅埋隧道施工工法比选[J].岩土力学,2007,S1:430-436.
[13]翟守俊,王文学,胡巍,吴慧蕾.基于ADINA的动压影响下巷道围岩稳定性数值分析[J].能源技术与管理,2011,01:25-26.
[14]王鹰,陈强,魏有仪,王华.红外探测技术在圆梁山隧道突水预报中的应用[J].岩石力学与工程学报,2003,05:855-857.
[15]Barenblett G,et al.Basic concepts in the theory of seepage of homogeneous liquids in fissured rocks[J].J.Appl.Mech,Engl.Transl,1960(5).
[16]Louis C.Rock hydraulics in rock mechanics[M].Edited by L.Muller.Verlay Wien,New York,1974.
[17]Snow DT.Anisotropic permeability of fractured media[Z].Water Resource Res,1969,5.
[2]李燕生.复杂地质条件下彭水隧道施工技术研究[D].天津大学,2006.
[3]陈其亮.涌水隧道施工技术控制方法[J].山西建筑,2012,29:208-209.
[4]宋金峰.圆梁山隧道注浆堵水方案及施工技术研究[D].中国地质大学(北京),2011.
[5]张松.关山隧道富水断层破碎围岩施工技术研究[J].中国新技术新产品,2012,21:108.
[6]李世才.桃树坪隧道富水未成岩粉细砂试验段施工技术[J].现代隧道技术,2012,04:111-119,139.
[7]孟君祥.乌鞘岭特长隧道注浆堵水施工技术研究[J].铁道建筑技术,2007,03:52-54.
[8]张成平,张顶立,王梦恕,项彦勇.高水压富水区隧道限排衬砌注浆圈合理参数研究[J].岩石力学与工程学报,2007,11:2270-2276.
[9]李杰.8号斜井及正洞富水软弱破碎地质隧道施工技术[J].铁道标准设计,2005,09:59-62.
[10]罗玉虎,李丹,刘亮,胡礼忠.摩天岭隧道涌水原因分析及处治措施[J].地下空间与工程学报,2011,02:408-412.
[11]中华人民共和国行业标准编写组.TB10204-2002铁路隧道施工规范[S].北京:中国铁道出版社.
[12]王伟锋,毕俊丽.软岩浅埋隧道施工工法比选[J].岩土力学,2007,S1:430-436.
[13]翟守俊,王文学,胡巍,吴慧蕾.基于ADINA的动压影响下巷道围岩稳定性数值分析[J].能源技术与管理,2011,01:25-26.
[14]王鹰,陈强,魏有仪,王华.红外探测技术在圆梁山隧道突水预报中的应用[J].岩石力学与工程学报,2003,05:855-857.
[15]Barenblett G,et al.Basic concepts in the theory of seepage of homogeneous liquids in fissured rocks[J].J.Appl.Mech,Engl.Transl,1960(5).
[16]Louis C.Rock hydraulics in rock mechanics[M].Edited by L.Muller.Verlay Wien,New York,1974.
[17]Snow DT.Anisotropic permeability of fractured media[Z].Water Resource Res,1969,5.