STUDY OF MODEL TEST FOR WATER PRESSURE DISTRIBUTION CHARACTER BEHIND DRAINAGE SEGMENT LINING
YAN Qixiang1,ZHANG Meng1,CHENG Xi2
(1. Department of Underground Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;
2. Institute of Tunnel Engineering,Chongqing Communications Research and Design Institute,Chongqing 400067,China)
Abstract:Based on the developed drainage segment lining-surrounding rock flow system,water pressure distribution law behind prefabricated drainage segment lining of a high water pressure tunnel is studied by employing indoor test as research methods. Discussion focus on water pressure distribution law behind the segment lining for different drainage schemes such as limiting discharge only,blocking groundwater-limiting discharge is conducted. Meanwhile,an attempted analysis for the effect of discharge capacity,grouting circle and discharge outlet density on water pressure behind the lining is carried out,so as to reveal the conic relationships of external water pressure discount coefficient or external water pressure and flow discharge for the whole lining and different parts of the lining. The study results can provide a reference for the design of high water pressure tunnel lining.
晏启祥1,张 蒙1,程 曦2. 泄水式管片衬砌壁后水压力分布特性模型试验研究[J]. 岩石力学与工程学报, 2013, 32(s1): 2617-2623.
YAN Qixiang1,ZHANG Meng1,CHENG Xi2. STUDY OF MODEL TEST FOR WATER PRESSURE DISTRIBUTION CHARACTER BEHIND DRAINAGE SEGMENT LINING. , 2013, 32(s1): 2617-2623.
晏启祥,马婷婷,陈 菲. 泄水式管片衬砌泄流量对衬砌外荷载的影响研究[J]. 岩土力学,2011,32(4):1 108-1 112.(YAN Qixiang,MA Tingting,CHEN Fei. Study of influence of water discharge volume on lining external loads for discharge segment lining[J]. Rock and Soil Mechanics,2011,32(4):1 108-1 112.(in Chinese))
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