长大深埋水工隧洞设计关键技术研究与实践

发布时间：2018-02-28 20:08

本文关键词： 长大深埋隧洞复杂地质条件高地下水围岩大变形岩爆综合预测方法开敞式TBM　出处：《水利水电技术》2017年10期 　论文类型：期刊论文

【摘要】：在分析我国长大深埋隧洞发展历程及研究现状的基础上,阐述了长大深埋隧洞工程遇到的主要工程地质问题,并结合多年积累的调水工程设计、施工、管理等经验,总结已完工及在建的高埋深长隧洞遇到的实际情况,针对突涌水、突泥和涌砂、岩爆、围岩大变形、高地温、高地应力、高外水等多种极为复杂的工程地质问题进行了分析和探讨。结果表明:在长大深埋隧洞设计前期,结合工程主要地质问题进行TBM设备选型至关重要;设计及施工过程中采用数值模拟、试验研究、超前地质预报、现场监测等手段,对高外水、软岩大变形、岩爆、高地温等不良地质洞段进行分析研究并动态调整设计;不良地质条件掘进易采用三低(低推力、低转速、低贯入度)、一快(快速掘进)、一连续(掘进)、宁慢勿停的掘进原则,可以避免国内外类似工程灾难性的后果发生。
[Abstract]:Based on the analysis of the development history and research status of long and deep buried tunnels in China, this paper expounds the main engineering geological problems encountered in the long and deep buried tunnels, and combines the experiences accumulated for many years in the design, construction and management of water diversion projects. This paper summarizes the actual situation of the high buried long tunnel which has been completed and is under construction, aiming at the inrush of water, mud and sand gushing, rock burst, large deformation of surrounding rock, high ground temperature and high ground stress, Some complicated engineering geological problems, such as high external water, are analyzed and discussed. The results show that in the early stage of design of long and deep buried tunnel, it is very important to select TBM equipment combined with main engineering geological problems. In the course of design and construction, numerical simulation, experimental research, advanced geological prediction, field monitoring and other means are used to analyze and study the bad geological tunnel sections such as high external water, large deformation of soft rock, rock burst, high ground temperature and so on, and to dynamically adjust the design. Poor geological conditions are easy to use three low (low thrust, low speed, low penetration), one fast (fast tunneling, one continuous (tunneling, rather slow than stop), can avoid the disastrous consequences of similar projects at home and abroad.
【作者单位】：中水北方勘测设计研究有限责任公司;
【基金】：国家重点研发计划重点专项项目“长距离调水工程建设与安全运行集成研究及应用”(YS2016YFSF020162)
【分类号】：TV554;TV672.1

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