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现代隧道技术 2021, Vol. 58 Issue (1) :27-36    DOI:
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强降雨作用下高速铁路隧道仰拱隆起原因分析及整治
(1 中南大学土木工程学院,长沙 410075;2 中铁十八局集团有限公司,天津 300222)
Cause Analysis and Treatment Measures of the Inverted Arch Heaving Disease of a High-speed Railway Tunnel under Heavy Rainfall
(1 School of Civil Engineering, Central South University, Changsha 410075; 2 China Railway 18th Bureau Group Co., Ltd., Tianjin 300222)
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摘要 近年来,降雨引发的铁路隧道仰拱隆起病害时有发生,严重影响隧道运营安全。文章以某高铁隧道仰拱隆起病害案例为依托,综合降雨作用、地形地质条件、防排水系统实际效果等多因素对病害原因进行探讨,采用数值模拟方法重现病害的发生,进而探究病害发生时隧道结构应力场、渗流场的特征规律,并结合病害情况提出针对性整治措施。研究结果表明:(1)复杂地质条件导致的地层富水连通性、难以预测的高强度集中降雨、防排水系统部分失效是病害发生的主要原因,而上述因素导致的隧道外水压力过高是病害发生的直接原因;(2)基于FLAC3D软件提出一种水压力引发的隆起病害反演方法,重现了案例隧道病害的发生,可为同类病害原因分析提供新思路;(3)基于病害情况,采取了“施作降压孔+隧底注浆锚固+增设泄水洞+地表处理”的综合整治措施。现场实施效果证明了整治方案的有效性,可供类似的病害隧道参考。
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李林毅 1 阳军生 1 王立川 1
2 王树英 1 方星桦 1 谢亦朋 1
关键词:   
Abstract: In recent years, the rainfall-induced inverted arch heaving diseases occur frequently in the railway tun? nel, which seriously affects the tunnel operation safety. Based on the inverted arch heaving case of a high-speed railway tunnel, this paper discusses the causes of the heaving disease by comprehensively considering the effects of the rainfall, the topographic and geological conditions, and the actual conditions of the drainage system. The numerical simulation method is used to reproduce the occurrence process of the disease, the characteristics of the tunnel structure stress field and seepage field during the disease occurrence are explored, and then the remediation measures are proposed in combination with the disease situation. The results show that: (1) the water-rich connectivity of the strata caused by complex geological conditions, the unpredictable high-intensity concentrated rainfall, and the partial failure of the drainage system are the main causes of the disease, and the excessive water pressure outside the tunnel caused by the above factors is the direct cause of the disease; (2) based on the FLAC3D software, an inversion analysis method for the water pressure-induced inverted arch heaving diseases is proposed, by which it reproduces the occurrence of inverted arch heaving diseases in the studied case and provides a new idea for the analysis of similar diseases; (3) based on the disease situation, the comprehensive treatment measures are adopted, including "installing of the pressure-release holes + grouting and anchorage at the tunnel bottom + adding of the drainage tunnels + treatment at the ground surface ", proving the effectiveness of the treatment measures after field implementation, which can be used as reference for similar tunnel disease remediation works.
KeywordsHigh-speed railway tunnel,   Heavy rainfall,   Invert arch heaving,   Water hazard,   Cause analysis,   Reme? diation measures     
基金资助:基金项目:高铁联合基金资助项目 (U1934211);国家自然科学基金资助项目 (51878669);中央高校基本科研业务费专项资助项目 (2019zzts291).
作者简介: 作者简介:李林毅(1994-),男,博士研究生,主要从事隧道工程研究工作,E-mail: tunnel_lly@csu.edu.cn. 通讯作者:阳军生(1969-),男,博士,教授,主要从事隧道工程的教学与科研工作,E-mail: jsyang@csu.edu.cn.
引用本文:   
李林毅 1 阳军生 1 王立川 1, 2 王树英 1 方星桦 1 谢亦朋 1 .强降雨作用下高速铁路隧道仰拱隆起原因分析及整治[J]  现代隧道技术, 2021,V58(1): 27-36
LI Linyi1 YANG Junsheng1 WANG Lichuan1, 2 WANG Shuying1 FANG Xinghua1 XIE Yipeng1 .Cause Analysis and Treatment Measures of the Inverted Arch Heaving Disease of a High-speed Railway Tunnel under Heavy Rainfall[J]  MODERN TUNNELLING TECHNOLOGY, 2021,V58(1): 27-36
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