某公路隧道进口边坡危岩体失稳分析及处治探讨  

Some thoughts on dangerous rock mass for some highway tunnel import slope

作　　者：毛新虎[1,2] 张国文 

机构地区：[1]山西省交通科学研究院,山西太原030006 [2]黄土地区公路建设与养护技术交通行业重点实验室,山西太原030006 [3]山西省第三地质工程勘察院,山西晋中030620

出　　处：《西南民族大学学报（自然科学版）》2012年第4期623-629,共7页Journal of Southwest Minzu University(Natural Science Edition)

摘　　要：我国是一个多山的国家,山区面积约占国土面积的三分之二.在多山地区,各种地质灾害的发育制约和影响着当地的社会经济发展,特别是崩塌、危岩体灾害,严重影响着当地与外界沟通的交通枢纽建设.山西省长平高速公路是连接山西省长治市与河南省安阳市高速公路的一部分,长平高速公路虹梯关超特长隧道进口位于虹霓河峡谷左岸岸坡,在隧道进口的上方,分布一处约2万多m3的危岩体,威胁隧道洞门和与隧道相接的白母塘大桥的安全.通过隧道口的工程地质条件及危岩体的调查研究,通过分析危岩体的形成机制和影响因素,对该危岩体做了系统分析,同时经过室内计算,对危岩体的稳定性和应力应变场作了一定研究,并在此基础上,对危岩体灾害的防治技术方案进行了探讨.China is a mountainous country, and the mountainous area is about two-thirds of the land area. In mountainous areas, constraints and the impact of the various geological disasters growth restrict and affect the local socio-economic development. Especially, collapse, dangerous rock mass disasters have seriously affected the traffic construcion. With the development of China＇s transportation industry, the long miles of road over the mountains have increasingly complex geological conditions of the tunnel through the mountain. Shanxi Changping Highway is part of the highway connecting Changzhi city and Anyang city. Changping Highway Hongtiguan ultra-long tunnel is on the left bank of the rainbow river canyon. Above the tunnel entrance, there are approximately more than 20,000 m3 of dangerous rock mass, which threatens the Baimutang Bridge safety between the tunnel portal and the tunnel connection. This paper surveys the engineering geological conditions of the tunnel mouth and the dangerous rock mass, analyzes the dangerous rock mass formation mechanism and influencing factors, and by the indoor calculation, researches the dangerous rock stability and strain fields. Finally, this paper discusses the dangerous rock disaster prevention technology.

关 键 词：公路隧道 危岩体 崩塌运动 处治方案 

分 类 号：O45[理学—无线电物理]