龙游石窟1～3号洞室稳定性分析及安全通道路线的选择  

Stability analysis of the large ancient underground rock caverns in Longyou and the selection of maximum-security routes in the caverns

作　　者：高千[1] 王靖[2] 杨志法[1] 张路青[1] 祝介旺[1] 郑舰 傅燕 

机构地区：[1]中国科学院地质与地球物理研究所工程地质力学重点实验室 [2]中国人民解放军96657部队 [3]浙江省龙游县风景旅游局

出　　处：《岩土力学》2009年第9期2713-2721,共9页Rock and Soil Mechanics

基　　金：浙江省科技攻关项目(No.2007C23093);国家自然科学基金项目(No.40672190)资助

摘　　要：龙游石窟是一个大型古地下洞室群,具有重要文物价值。但龙游石窟正面临着风化速度加快,围岩变形破坏越来越严重等问题。在洞室群内部设置安全通道的方法是保证旅游安全和实现洞室群长期保护的一个重要措施。为制定设计安全通道的合理方案,对洞室群分布区的变形破坏现象进行了现场地质调查,并根据调查结果重点分析了洞室群洞口区域、顶板、公共边墙和岩柱的变形破坏特征。并利用有限差分程序FLAC3D进行了数值计算分析,对安全通道所经过区域的洞室围岩稳定性进行了评价。在计算过程中,利用网格单元的安全系数计算方法对比分析了安全通道的不同设计方案,初步确定了龙游地下洞室群1～3号洞室安全通道的设计路线。The large ancient underground rock caverns in Longyou is an important component of grotto cultural. Current task facing the long-term preservation of these unmovable cultural relics is arduous and challenging. The weathering velocity of these caverns is accelerating. The deformation failure of the caverns＇ surrounding rock is deteriorating. Construction of the maximum-security routes in the caverns might be an efficient way to ensure the security of tourists and reach the target of long-term preservation. In order to establish an optimum schemes, field investigations for the deformation and failure situations of caverns＇ surrounding rocks are carried out. According to field investigation results, several kinds of failure characteristics are recognized. Numerical analysis is also performed using FLAC3D code. The safety coefficient evaluation method is introduced to assess the stability state of caverns＇ surrounding rocks in the research progress. Also, various kinds of schemes for construction the maximum-security routes in the caverns are contrasted; and the maximum-security routes through No.1 to No.3 caverns are determined preliminarily.

关 键 词：龙游石窟 稳定性 安全系数 安全通道 

分 类 号：TU457[建筑科学—岩土工程]