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金属矿山 ›› 2018, Vol. 47 ›› Issue (11): 144-148.

• 安全与环保 • 上一篇    下一篇

凹山排土场坡脚挖损后的安全评价及治理方案

洪振川1,王广成1,朱末琳1,陈树召2,韩流2   

  1. 1. 马钢(集团)控股有限公司南山矿业公司,安徽 马鞍山 243000;2. 中国矿业大学矿业工程学院,江苏 徐州 221116
  • 出版日期:2018-11-15 发布日期:2018-12-19

Safety Evaluation and Treatment Plan after Excavation Damage of Slope Foot in Washan Dump

Hong Zhenchuan1, Wang Guangcheng1, Zhu Molin1, Chen Shuzhao2, Han Liu2   

  1. 1. Nanshan Mining Co.,Magang(Group) Holding Company Ltd.,Maanshan 243000,China;2. School of Mines,China University of Mining & Technology, Xuzhou 221116,China
  • Online:2018-11-15 Published:2018-12-19

摘要: 为了评价凹山排土场被挖损后的稳定性,并提供相应的治理方案,对基底的地层结构和边坡内部的水流进行分析,明确了该排土场不存在形成泥石流的隐患。根据排土场的边坡特点,选择极限平衡法进行稳定性计算,按照排土程序和堆载时间的差异进行分层参数赋值和建模。采用GEO-studio对排土场进行稳定性分析,结果表明:排土场现状稳定系数为1.023,采用回填压脚的方式,可提高排土场稳定性。排土场稳定性随着回填压脚宽度的增大呈线性增长,当压脚宽度达到15.9 m时,稳定系数达到1.20以上。

关键词: 排土场, 挖损, 安全评价, 治理方案

Abstract: In order to evaluate the stability of the Washan dump after being excavated, and provide corresponding treatment plans, the ground structure and the water flow within the slope are analyzed to make sure that there is no hidden danger of debris flow in the dump. According to the characteristics of the dumping slope, the limit equilibrium method was selected for the stability calculation, and the parameters and modeling were stratified according to the differences in the soil-discharging procedures and the loading time. GEO-studio was used to analyze the stability of the dump. The results showed that the current stability factor of the dump is 1.023, and the backfill presser can improve the stability of the dump. The stability of the waste dump increases linearly with the width of the backfill presser foot. When the width of the presser foot reaches 15.9 m, the stability coefficient reaches 1.20 or more.

Key words: Dump, Excavation damage, Safety assessment, Treatment plan