Bearing Capacity Analysis of the Weak Basement, Progressive Destruction Analysis, and Evaluation of the Dump on an Inclined Strip Section Using the Upper-Limit Method: A Case Study in an Anonymous Open-Cast Coal Mine

Due to terrain and transportation constraints, some open cast mines have choose a weak basement as their tailings dumping grounds. Therefore, ensuring the bearing capacity slope stability of grounds on is great significance for production economic benefits mining. To ensure safety surrounding facilities normal mines, ground certain mine was calculated using oblique strip method verified by numerical simulation. On this basis, potential failure mode base analyzed, ultimate under current conditions calculated. The results are follows: (1) 3781 kPa, overall shear sliding along ground. (2) When foot increases from 12° 18°, coefficient critical decrease about 21% 46%, respectively. angle has greater impact base, height body relatively small impact, with almost no width effect. (3) Compared classic Terzaghi Prandtl method, determined proposed in paper closer simulation results, an error more than 5%, consistent surface, that engineering practice monitoring surface uplift part. calculation reliable.