某铁矿排土场稳定性分析与防治措施

Stability Analysis and Treatment Measures of the Dumping Site in an Iron Mine

首先对排土场工程地质和水文工程地质进行了调查分析,研究了排土场散体物理力学性质,以此为基础,确定了排土场稳定性计算力学强度指标。针对A-A'、B-B'2个典型剖面,在有无地下水及地震4种组合状态下,采用瑞典法、Bishop和余推力法对其进行稳定性计算,以这2个典型剖面稳定性计算结果为基础,对整个排土场的稳定性进行评价,最后提出相对应的防治措施。

The hydrological geology and engineering geology of the dumping site of a mine are investigated and analyzed,the physical and mechanical properties of the granular medium of the dumping site are researched,based on the research results,the mechanical strength index of the stability calculation of the dumping site is determined.According to the A-A ' and BB ' two typical sections,under the four combinations state of presence or absence of groundwater and earthquakes,the stability of the two typical sections are calculated by adopting Swedish method,Bishop and remaining thrust method.Based on the stability calculation results of the two typical sections,the stability of the whole dumping site is evaluated.Besides that,the treatment measures of the dumping site is proposed.