金沙江某水电站弃渣场稳定性评价

Stability Evaluation of the Abandoned Dreg Field of a Hydropower Station in Jinsha River

通过野外地质调查与钻探等手段,查明了金沙江某水电站弃渣场的地质条件,重点分析了弃渣场的稳定性,泥石流对弃渣场的影响两个工程地质问题。结果表明:渣场基本沿两条相邻的较大的东西向沟谷堆填,地形条件较好,基本适宜作为渣场,但渣场地表全强风化岩体厚度较大,需对弃渣体的抗滑稳定性进行校核。

The geological conditions of the abandoned dreg field of a hydropower station in Jinsha River are ascertained through some approaches such as field geological survey and drilling. Two main geological problems, the stability of the abandoned dreg field and the mudslide influence to the abandoned dreg field, are analyzed. The results indicate that the field with fairly good topography, which is filled along two adjacent east-west gullies, fits the basic requirements of an a- bandoned dreg field. The sliding resistance stability of the abandoned dreg should be checked further due to the relative- ly great thickness of the strong-weathered rock mass surface.