禹门口隧道口斜坡堆积体稳定性研究  

Study on Stability of Slope Accumulation Body at Yumenkou Tunnel Entrance

作　　者：王炎 吴博 WANG Yan;WU Bo(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]华北水利水电大学地球科学与工程学院,河南郑州450046

出　　处：《河南科技》2023年第7期70-73,共4页Henan Science and Technology

摘　　要：【目的】禹门口隧道口上方因顶部危岩体塌落及人工建设而形成了以崩积体及弃渣体为主的四处斜坡堆积体,堆积体处于基本稳定状态。【方法】运用传递系数法以及GEO-SLOPE软件计算了堆积体九个剖面的稳定性。【结果】计算结果显示:自然工况下,四处斜坡堆积体都处于稳定状态;暴雨工况下,除第四区堆积体处于欠稳定状态外,其余三区堆积体都处于基本稳定状态;地震工况下,第三区及第四区堆积体处于欠稳定状态,第一区及第二区处于稳定状态。【结论】两种方法计算结果差距不大,依最大危险原则,选取Morgenstern-Price法计算结果作为防治措施的设置依据。[Purposes]Due to the collapse of the top dangerous rock mass and the artificial construction,the four slope accumulative bodies mainly composed of colluvial body and slag abandoned body were formed above the tunnel mouth of Yumenkou.During the investigation,it was found that the accumulative body was in a basically stable state.[Methods]Transfer coefficient method and GEO-SLOPE software are used to calculate the stability of nine profiles of the accumulation body.[Findings]The results show that the slope accumulation body is in a stable state under natural conditions.Under the condition of heavy rain,the accumulation bodies in four areas are in the understable state,and the other three areas are in the basically stable state;under seismic conditions,the accumulations in Zone 3 and Zone 4 are in an understable state,while those in Zone 1 and Zone 2 are in a stable state.[Conclusions]There is little difference between the results of the two methods,but the Morgenstern-Price method is selected as the basis for the setting of prevention and control measures based on the principle of maximum risk.

关 键 词：堆积体 稳定性 传递系数法 GEO-SLOPE 

分 类 号：X43[环境科学与工程—灾害防治]