Experimental study for joint leakage process of tunnel lining and particle flow numerical simulation

被引：37

作者：

Zhang, Zhiguo ^{[1
,2
,3
]}

Mao, Mindong ^{[1
]}

Pan, Yutao ^{[4
]}

Zhang, Mengxi ^{[5
]}

Ma, Shaokun ^{[6
]}

Cheng, Zhixiang ^{[1
]}

Wu, Zhongteng ^{[3
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Environm & Architecture, 516 Jungong Rd, Shanghai 200093, Peoples R China

[2] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore, Singapore

[3] Minist Nat Resources, Key Lab Geohazard Prevent Hilly Mt, Fujian Key Lab Geohazard Prevent, Fujian 350002, Peoples R China

[4] Norwegian Univ Sci & Technol, Fac Engn, Trondheim, Norway

[5] Shanghai Univ, Dept Civil Engn, Shanghai 200444, Peoples R China

[6] Guangxi Univ, Sch Civil Engn & Architecture, Nanning 530004, Guangxi, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2022年 / 138卷

基金：

中国国家自然科学基金;

关键词：

Tunnel leakage; Water and sand loss; Seepage tracer; Model test; Particle flow simulation; CIRCULAR TUNNEL; SEEPAGE EROSION; GROUND RESPONSE; SHIELD TUNNELS; MODEL; SETTLEMENT; STABILITY; MECHANISM; DRAINAGE; FAILURE;

D O I：

10.1016/j.engfailanal.2022.106348

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Most of urban ground collapses and tunnel failures are caused by joint leakage of shield tunnel lining. This paper conducts a series of model tests and particle flow simulations aiming to investigate the geo-hazards and explore the associated failure mechanism due to tunnel leaking. Based on critical width of leaky joint, taking leaky joint location, overburden depth and height of overlying water level as influencing factors, the settlement of the sand layer and the law of the water and sand loss is effectively predicted. Then, the focus is on designing a seepage tracer device to explore the distribution of the seepage field and its flow line variation. Finally, the particle flow numerical model of tunnel-sand is employed for the soil arching effect and flow line changes during seepage erosion to discover the fine scale influences of sand particle migration and loss around the shield tunnel on the surrounding environment.

引用

页数：40

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