排水孔各参数对滑坡排水防治效果及安全系数的影响分析  

Analysis of influence of various parameters of drainage holes on control effect and safety coefficient of landslide drainage

作　　者：张兰阁 吴丽丽[1] 信校阳 贺可强[1] 郭媛媛 Zhang Lange;Wu Lili;Xin Xiaoyang;He Keqiang;Guo Yuanyuan(Engineering Technique Research Center of Geo-Environment and Impact,Qingdao University of Technology,Qingdao 266033,Shandong)

机构地区：[1]青岛理工大学地质环境与效应研究中心

出　　处：《工程建设》2019年第12期10-17,共8页Engineering Construction

基　　金：国家自然科学基金资助项目(No.41372297);山东省自然科学基金项目(ZR2017PD011)

摘　　要：运用Geo-Studio2012软件进一步研究排水孔各参数对边坡排水防治效果和安全系数的影响。研究结果发现,排水孔的排水降压效果和边坡的安全系数不随孔长和排水孔间距的增长呈线性增长;孔倾角和孔径的增加对排水降压效果影响较小,排水孔的埋设高程的增加使排水孔的排水降压效果和边坡的安全系数反而减小,排水孔排数N=2~3排时,排水降压效果最好。Geo-Studio2012 software is used to further study the effects of various parameters of drainage holes on control effect and safety coefficient of slope drainage. The study result shows that,the drainage pressure reduction effect and slope stability of the drainage holes do not increase linearly with the increase of the hole length and the drainage hole spacing;The increase of hole inclination angle and aperture has little influence on the effect of drainage pressure reduction. The increase of drainage height of the drainage hole decreases the drainage pressure reduction effect of the drainage hole and the safety factor of the slope,when the number of rows of drainage holes is N = 2 ~ 3,the drainage pressure reduction effect is the best.

关 键 词：降雨型滑坡 仰斜式排水孔 数值模拟 

分 类 号：P642.22[天文地球—工程地质学]