某排土场Geostutio邓肯张模型和FLAC^(3D)摩尔库伦模型计算结果对比  

Comparison between the Stability Analysis Results of a Dumping Site by Geostudio with Duncan-Chang Model and Those by FLAC^(3D)with Mohr-Colomb Model

作　　者：叶琼瑶 韦立德[2] 邵羽 黎盟 YE Qiongyao;WEI Lide;SHAO Yu;LI Meng(Guangxi Communications Design Group Co.,Ltd.,Nanning 530029,China;Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;Gezhouba Group Transportation Investment Co.,Ltd.,Baise 533500,China)

机构地区：[1]广西交通设计集团有限公司,广西南宁530029 [2]中国科学院武汉岩土力学研究所,湖北武汉430071 [3]葛洲坝集团交通投资有限公司,广西百色533500

出　　处：《金属矿山》2023年第4期186-191,共6页Metal Mine

基　　金：国家自然科学基金项目(编号:51074152);广西交通运输重点科技项目(编号:2020-1-14)。

摘　　要：为了研究软件的适用性,本研究提供了Geostudio软件的分析结果和FLAC^(3D)的分析结果对比。针对某排土场稳定性问题,采用Geostudio软件的有限元法邓肯张模型和FLAC^(3D)摩尔库伦模型分别计算分析,然后采用Geoslope进行基于有限元计算应力的极限平衡法进行边坡最小安全系数计算,和采用FLAC^(3D)强度折减法进行边坡最小安全系数计算,然后对计算结果进行了比较,得到了如下初步结论:有限元法邓肯张模型计算结果能够比较准确给出排土场拉应力出现部位从而正确预测张拉裂缝灾害的发生,而在这方面FLAC^(3D)计算结果没有实现;基于有限元法邓肯张模型应力计算的极限平衡法的稳定性安全系数计算结果小于FLAC^(3D)计算模型的强度折减法计算结果。A comparison scheme of the stability analysis results by Geostudio and those by FLAC^(3D)was offered to study the applicability of the softwares.The stability analysis of a dumping site by the finite element method of Geostudio with Duncan-Chang model,including calculating the minimum safety factor for slope stability based on the FEM stress results by Geoslope of Geostudio,was done.The stability analysis of the same dumping site by the finite difference method of FLAC^(3D)with Duncan-Chang model,including calculating the minimum safety factor using the strength reduction method,was also done.The comparison between the stability analysis results by Geostudio and those by FLAC^(3D)was made and the following comparison results were gotten.The stress results of the stability analysis by the finite element method of Geostudio could give the correct position of tensile stress that caused tension cracks in the dumping site but the stress results by the finite difference method of FLAC^(3D)could not.The minimum safety factor by Geostudio was less than that by FLAC^(3D).

关 键 词：排土场 张拉裂缝 最小安全系数 邓肯张模型 FLAC^(3D) 对比 

分 类 号：TU455[建筑科学—岩土工程]