四川马家田尾矿堆积坝稳定性分析
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摘要
通过对马家田尾矿库区域地质构造、库区不良地质观察、尾矿淋滤固结和化学固结、坝体渗透水和库区特大洪水等因素对马家田尾矿堆积坝体稳定性影响的分析 ,初步论证了坝体尾矿砂土的地震液化、渗透破坏、坝肩滑坡使坝体失稳和洪水漫顶的可能性 ,以及尾矿淋滤固结和化学固结作用有助于坝体的稳定性。并初步提出了马家田尾矿库可能会诱发地震和封库停运后大气降雨会导致坝体尾矿砂土抗剪强度降低的观点。
In this paper, regarding the analysis of stability factors of Majiatian tailings fill dam, namely regional geologic structure, rock soil body of dam foundation, poor geology phenomenon , leach consolidation and chemical consolidation of tailings, seepage water of dam body and king size flood water of Majiatian tailings reservoir, a preliminary demonstration on probability of earthquake liquefaction and seepage failure of dam body's tailings sand soil, of the dam body failure resulted from abutment landslide and of the flood water overflowing crest, as well as on the contribution of leach consolidation and chemical consolidation of tailings to the stability of dam body has been performed A point that Majiatian tailings fill dam might induce earthquake and rainfall water might result in declination of shear strength of tailings sand soil once the reservoir is closed has been put forward
In this paper, regarding the analysis of stability factors of Majiatian tailings fill dam, namely regional geologic structure, rock soil body of dam foundation, poor geology phenomenon , leach consolidation and chemical consolidation of tailings, seepage water of dam body and king size flood water of Majiatian tailings reservoir, a preliminary demonstration on probability of earthquake liquefaction and seepage failure of dam body's tailings sand soil, of the dam body failure resulted from abutment landslide and of the flood water overflowing crest, as well as on the contribution of leach consolidation and chemical consolidation of tailings to the stability of dam body has been performed A point that Majiatian tailings fill dam might induce earthquake and rainfall water might result in declination of shear strength of tailings sand soil once the reservoir is closed has been put forward
引文
1 余绍维 ,李鸿翔 ,田继党 .四川省攀钢 (集团 )矿业公司马家田尾矿库坝体稳定性研究堆积坝岩土工程勘察报告 .中国有色金属工业昆明勘察设计研究院 ,2 0 0 0年 3月 .
2 曹 净 ,李鸿翔 ,李育红 .马家田尾矿淋滤固结和化学固结机理初步分析报告 .中国有色金属工业昆明勘察设计研究院 ,2 0 0 0年 3月 .
3 曹 净 .攀钢马家田尾矿化学固结机理初探 .桂林工学院学报 ,2 0 0 0 ,(2 ) .
3 杨果 .Fe- H2 O体系中几种物质的稳定性初探 .昆明理工大学学报 ,1999,2 4(1) :2 11～ 2 14.
2 曹 净 ,李鸿翔 ,李育红 .马家田尾矿淋滤固结和化学固结机理初步分析报告 .中国有色金属工业昆明勘察设计研究院 ,2 0 0 0年 3月 .
3 曹 净 .攀钢马家田尾矿化学固结机理初探 .桂林工学院学报 ,2 0 0 0 ,(2 ) .
3 杨果 .Fe- H2 O体系中几种物质的稳定性初探 .昆明理工大学学报 ,1999,2 4(1) :2 11～ 2 14.
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