【作者】 张毅；

【导师】 杨晓华；

【作者基本信息】 长安大学 ， 岩土工程， 2012， 硕士

【摘要】 近年来，伴随着我国国力的不断增强，公路交通事业的不断发展，建设正向山区进一步延伸，隧道工程越来越多，施工过程中由于断层破碎带、节理发育、溶洞等不良地质的影响，容易发生塌方、涌水、突泥等灾害，严重制约着施工的进度和质量，因此，为保证施工安全，有必要在施工过程中针对断层破碎带等不良地质开展施工期风险评估。本文以广东梅大高速公路山子顶隧道为工程背景，首先分析了影响围岩稳定性的因素，总结断层破碎带的特征。接着采用模糊数学和统计方法，建立起监测数据和隧道风险事故发生的概率之间的函数关系式，以此来推断风险事故的发生概率。同时，在总结现有不良地质体的基础上，针对断层破碎带具体情况给出相应的施工防治措施，以便为类似地质条件的施工风险控制提供依据。更多还原

【Abstract】 Recently, with the development of the society,the constant development of the highwayconstruction in mountainous area is further extended, tunnel become more and more.Since theinfluence of broken fault zone, Joint development,water-eroded cave,and bad geology in theprocess of the construction,it is easily result in collapse, water gushing, gushing mud disaster,which seriously restricting the construction progress and quality, therefore, in order to ensurethe construction safety,it is necessary to develop risk assessment according to the faultfracture zone in the construction process.This paper is based on Mei Da highway tunnel, first analyzed the influence ofsurrounding rock stability factors, summed up the characteristics of broken fault zone. Thenestablish monitoring data and tunnel risk accident occurrence probability function relationsbetween risk by using the fuzzy mathematics and statistical methods, to infer the probabilityof accidents. At the same time, in summing up the existing bad geological body based onspecific circumstances, put forward construction prevention measures according to thespecific circumstances of the corresponding fault fracture zone, so as to provide the basis forconstruction risk control.更多还原