概率积分模型模拟隧洞开挖过程中岩石移动  

Simulation of Rock Displacement in Tunnel Excavation Based on Probability Integrating Model

作　　者：李水兵[1] 单海年 陶丛丛[1] 许永祥[1] 

机构地区：[1]南京南瑞集团公司国网电力科学研究院,江苏南京210003

出　　处：《水利与建筑工程学报》2014年第2期228-232,共5页Journal of Water Resources and Architectural Engineering

摘　　要：隧洞开挖引起的上覆岩石的位移,传统的预计模型能很好地对变形的最大值进行预计,但没有对岩石下沉过程进行研究分析。通过将隧洞开挖过程中上覆岩层移动模拟为随机过程,采用随机介质理论建立概率积分模型对隧洞开挖过程中岩石位移进行模拟分析,显示出隧洞开挖过程中岩石位移分层影响传递规律,并结合江苏某抽水蓄能电站实际观测数据,通过建立传统模型对概率积分模型的参数进行预测,模拟的岩石下沉过程对解释隧洞开挖过程中岩石移动具有一定的参考价值。For the overlying-rock displacement caused by tunnel excavation ,the traditional model can well predict the maximum deformation ,but it can not study and analyze the rock sinking process .Through the stochastic process simula-tion for the overlying-rock displacement caused by tunnel excavation ,the probability integrating model based on the stochastic medium theory is built to simulate the rock displacement in the process of tunnel excavation ,and the law of the layered transfer of the rock displacement in tunnel excavation is shown .Simultaneously ,combining with the observation data of a pumped storage power station in Jiangsu ,the parameters of the probability integrating model are estimated by the traditional model .The rock sinking process simulated here has a certain reference value to explain the rock displacement in the process of tunnel excavation .

关 键 词：随机介质理论 概率积分法 隧洞开挖 岩石位移 

分 类 号：TU196.2[建筑科学—建筑理论]