条块间作用力倾角的假定及其对条分法计算结果的影响  

Assumption of the Slices'Force Dips and Its Effect on Results Calculated by Slice Method

作　　者：苏爱军[1] 王建[2,3] 周涛[3] 

机构地区：[1]中国地质大学教育部长江三峡库区地质灾害研究中心,湖北武汉430074 [2]中国煤炭科工集团武汉设计研究院,湖北武汉430064 [3]中国地质大学工程学院,湖北武汉430074

出　　处：《地球科学（中国地质大学学报）》2013年第1期188-194,共7页Earth Science-Journal of China University of Geosciences

基　　金：国家"973"计划项目(No.2011CB710600)

摘　　要：以猴子石滑坡为例,利用数值模拟方法,计算了滑坡条块间作用力倾角.对比分析了半精确条分法中传递系数法、罗厄法、美国陆军工程师团法、简化的简布法及实用递推法所确定的条块间作用力倾角与数值模拟值计算结果的差别.讨论了半精确条分法关于条块间作用力倾角的假定对滑坡稳定系数计算精度的影响,并与精确条分法的计算结果和基于数值模拟值的条块间作用力倾角所计算的力的平衡条件下的稳定系数进行了比较.详细论证了现行主要半精确条分法的精度与适用性.The dips of slices＇ force were determined by numerical simulation method by taking Monkey Stone landslide the study subject in this paper. The differences between the dips calculated by numerical simulation and those determined by the semiprecise slice method including the transfer coefficient method, Rohre law, the U. S. Army Corps of Engineers, simplified method and practical recursive method were analyzed. The effect of assumption of the slices＇ force dips based on semi-accurate slice method on the accuracy of landslide stability coefficient was discussed, and the results calculated by accurate slice method were compared with those calculated by numerical simulation. The study proves the accuracy and applicability of those current major semi-precision slice methods.

关 键 词：条分法 滑坡 数值模拟 稳定系数 工程地质 

分 类 号：P694[天文地球—地质学]