花岗岩地区铁路深大竖井治水案例及治水效率分析

王唤龙; 刘建兵; 杨昌宇; 朱廷宇

doi:10.3973/j.issn.2096-4498.2021.03.008

隧道建设 >

2021 , Vol. 41 >Issue 3: 402 - 410

DOI: https://doi.org/10.3973/j.issn.2096-4498.2021.03.008

研究与探索

花岗岩地区铁路深大竖井治水案例及治水效率分析

王唤龙 ,
刘建兵 ,
杨昌宇 ,
朱廷宇

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1. 中国中铁二院工程集团有限责任公司，四川成都 610031；2. 云桂铁路云南有限责任公司，云南昆明 650011）

王唤龙（1981—），男，山东胶州人，2011年毕业于西南交通大学，岩土工程专业，博士，高级工程师，现从事特殊隧道结构、TBM施工隧道理论及应用研究。E-mail： ppadhere@yeah.net。

网络出版日期: 2021-04-03

基金资助

中国国家铁路集团有限公司重大课题（P2019G055）；中铁二院工程集团有限责任公司科技项目（KYY2020122(20-22))

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Case Study of Water Control in a Deep and LargeDiameter Vertical Railway Shaft in Granite and Analysis of Its Efficiency

WANG Huanlong ,
LIU Jianbing ,
YANG Changyu ,
ZHU Tingyu

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(1. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, Sichuan, China; 2. Yungui Railway Yunnan Co., Ltd., Kunming 650011, Yunnan, China)

Online published: 2021-04-03

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摘要

为研究铁路隧道竖井建井期间主要治水方案定量化选择的科学依据，从竖井建井方案定性选择的特点入手，依据高黎贡山隧道在火成岩地区竖井注浆堵水的实践，结合2个竖井建井期间2次地面预注浆、42次工作面注浆和47次壁后注浆的实测数据，统计注浆堵水后井筒内的剩余漏水量，计算3种注浆措施后的堵水率。基于数据挖掘和决策方法，分析计算单一或多种堵水措施实施后的堵水率数学期望，提出一种满足数学期望的花岗岩地区竖井堵水定量化评价指标。计算结果表明，采用多种注浆方式组合的综合方案较单一注浆方案处理竖井涌水量的能力提高12~15倍。建议花岗岩地区竖井建井前或掘砌前应采取系统化的堵水措施，保证建井安全，改善井内施工环境。

关键词： 铁路隧道; 竖井; 堵水方案; 治水效率; 注浆

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王唤龙 , 刘建兵 , 杨昌宇 , 朱廷宇 . 花岗岩地区铁路深大竖井治水案例及治水效率分析[J]. 隧道建设, 2021 , 41(3) : 402 -410 . DOI: 10.3973/j.issn.2096-4498.2021.03.008

Abstract

It is necessary to find a quantitative theoretical basis for selecting a watercontrol scheme for the exploration of vertical tunnel shafts. Based on the qualitative selection characteristics of construction schemes for vertical shafts, the data measured after 2 examples of ground pregrouting, 42 examples of workingface grouting, and 47 examples of grouting behind the lining during the construction of two vertical shafts in the Gaoligongshan tunnel are analyzed. The watersealing efficiencies for these three grouting methods are calculated by statistically analyzing the residual water leakage in the shaft after grouting. Finally, based on data mining with a specific decisionmaking method, the mathematical expectation for the watersealing efficiency after using one or multiple grouting methods is obtained, and a quantitative evaluation index for watersealing of a vertical shaft in granite that meets this mathematical expectation is proposed. The calculations show that the watercontrol capacity of the combined grouting scheme is 12～15 times higher than that of the singlegrouting scheme. This suggests that systematic watersealing measures should be taken before shaft construction or excavation in granite to improve the safety of the shaft and the construction environment.

Key words： railway tunnel; vertical shaft; water seal scheme; water control efficiency; grouting

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