南芬铁矿大东沟排土场稳定性分析与治理对策  

Stability Analysis of Dadonggou Dumping Site in Nanfen Iron Mine and Related Measures

作　　者：徐燕[1] 佴磊[1] 丁黄平[1] 

机构地区：[1]吉林大学

出　　处：《金属矿山》2007年第4期19-22,共4页Metal Mine

摘　　要：研究了南芬铁矿大东沟排土场的工程地质特征,分析了排土场滑坡的破坏模式,在此基础上对目前排土场稳定性进行了分析,并对排土场继续以目前单台阶排土方式排土前推200 m之后的稳定性进行了分析,由分析得到排土场稳定性与目前排土场稳定性相比,变化不大。遂从排土方式的角度,对分台阶排土的情况进行了稳定性分析。进而提出了排土场边坡的综合治理措施,得出结论:①在雨季或融雪季节,当排土场内地下水来不及及时排出时,排土场的稳定性将大幅度降低,有很大的安全隐患;②改用分台阶排土方式对稳定性没有明显改善,作用不大;③建议做好排土场安全监测工作、排水工作及支挡工作。Based on the study of the engineering geological characteristics of Dadonggou dumping site in Nanfen Iron Mine and the analysis of the failure mode of dump landslide, the present stability of the dumping site and the stability of the site after 200 m advance using the present single bench dumping are analyzed. It is shown that there will be little change in the stability in the latter case compared with that of the present dump. The effect of the sub-benching dumping mode on the dump stability is then analyzed and the measures for the comprehensive treatment of the dump are proposed. It is concluded that （ 1 ） when in rainy or snow melting season, the stability of the dumping site will be greatly reduced if the underground water in the dump cannot be drained timely, representing a great hidden safety danger; （2） the change of the dumping mode to sub-benching will have no evident improvement on its stability; and （3） the safety monitoring, drainage and baffling of the dump should be well done.

关 键 词：排土场 稳定性 治理对策 

分 类 号：TD854.7[矿业工程—金属矿开采]