西石门铁矿散体临界深度预测与地表陷落范围控制  

Critical depth prediction and surface subsidence range controlling based on Xishimen mine

作　　者：郑建明[1,2] 任凤玉[2] 唐烈先[3] 

机构地区：[1]吉林化工学院信息与控制工程学院,吉林吉林132022 [2]东北大学资源与土木工程学院,辽宁沈阳110819 [3]辽宁科技大学矿业工程学院,辽宁鞍山114051

出　　处：《采矿与安全工程学报》2014年第4期631-634,共4页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金重点项目(50934006);中央高校基本可研业务费专项资金项目(N100701001)

摘　　要：传统的错动角圈定地表陷落范围的方法往往与生产现状不适应。为了研究地表塌陷坑临界散体柱高度与陷落范围的关系,根据西石门铁矿地表塌陷坑内移动散体的侧向支撑力作用分析,提出了当塌陷坑散体的厚度不小于临界散体柱高度时,散体的主动压力与被动压力共同阻止边壁岩体的片落活动,研究了影响临界散体柱高度的相关因素。结果表明:使用井下废石对地表塌陷坑进行回填,可有效降低临界深度和控制地表陷落范围。The traditional way of predicting subsidence range by stagger angle doesn’t adapt to pro-duction. This paper is to have a study of the relation between the height of critical bulk solid column in subsidence pit and subsidence range. After an analysis of lateral anchorage force of mobile bulk in pit, the paper proposed that the active pressure and passive pressure of dispersion both prevented the scaling of side wall rock while the thickness of bulk solid in pit is not less than the height of critical bulk solid column and the related factors affecting the height of critical bulk solid column is researched. The re-sults show that filling subsidence pit with waste can lower the critical depth and control surface subsi-dence range.

关 键 词：临界深度 陷落范围 临界散体柱 被动压力 

分 类 号：TD325[矿业工程—矿井建设]