深厚软土地基上尾矿坝坝体稳定性加固措施分析  

Analysis of reinforcing measures for stability of tailings dam on thick and soft soil foundation

作　　者：韩亚兵[1,2] 周汉民[1,2] 崔旋[1,2] 甘海阔[1,2] 郄永波[1,2] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]金属矿山智能开采技术北京市重点实验室,北京102628

出　　处：《有色金属（矿山部分）》2015年第B08期68-72,共5页NONFERROUS METALS(Mining Section）

摘　　要：由于受选址及征地条件的限制，某加高工程尾矿库修筑于深厚软土地基之上，最大软土深度达40m且毗邻河谷。这种复杂地质条件上筑坝的布置方式在国内外很少见，其地基和坝体加固措施的决策及稳定性直接关系到该尾矿库工程的成败。为了解坝体的稳定性，以及尾矿坝加固方式的有效性及合理性，采用数值计算方法对不同加固措施进行模拟分析。计算结果表明，采用多措施并举的方式可解决该尾矿库加高后稳定性不足的难题，特殊运行条件下坝体最小安全系数为1．076，能够满足相关规范要求。研究成果可为类似工程提供参考。Because of the influence of land expropriation and siting, a railings dam was built on the thick soft soil foundation with the greatest depth of 40 m, which is adjacent to the river. The layout schemes such as damming in complicated geological condition are really rare at home and abroad. The consolidation and stability of the foundation and dam body are critical to the success of the tailings reservoir. In this study, the simulation analysis of the different reinforcing measures is performed by the numerical comparison in order to know stability of the tailings dam and understand the effectiveness and reasonability of reinforced manners. The result shows that the problem with poor stability after heightening the tailings dam can be solved by the combination of various measures. The minimum safety factor is 1. 076 under special conditions, which can meet the related standards. It can provide references for the similar engineering.

关 键 词：深厚软土地基 尾矿坝 加固措施 坝体稳定性 

分 类 号：TD926.41[矿业工程—选矿]