弃渣场边坡稳定性数值模拟研究

云南省昭通市镇雄县下坝隧道出口弃渣场存在滑塌可能性,采取Geoslope岩土软件分别计算弃渣场天然和暴雨工况下的稳定性,并建立三维数值模型用FLAC3D软件对暴雨工况下弃渣场的稳定性进行计算,将两种计算结果比较发现:弃渣场在暴雨工况下不稳定,前缘易发生破坏。提出设计方案,再通过有限元三维数值模拟对治理后的渣场进行计算稳定性评价,结果表明设计方案能够满足弃渣边坡稳定。

NUMERICAL SIMULATION STUDY ON SLOPE STABILITY OF DUMPING SITE

There are potential safety hazards for the dumping site at the exit of Xiaba Tunnel in Zhenxiong County, Zhaotong City, Yunnan Province.this paper uses Geoslope geotechnical software to calculate the stability of the dumping site field under natural and storm conditions. and a three-dimensional numerical model was built to calculate the stability of the waste slag field under storm conditions using FLAC3d software. Comparing the two calculation results, it is found that the dumping site field is unstable under storm conditions and the leading edge is prone to damage. The design scheme is proposed, and the stability evaluation of the treated slag field is carried out by finite element three-dimensional numerical simulation. The results show that the design scheme can satisfy the stability of the waste slag slope.