高水材料条带充填开采地表沉陷主控因素分析  

Analysis on Main Control Factors of Surface Subsidence by Strip Backfill Mining with High Water Material

作　　者：孙万明[1] 刘鹏亮[1] 崔锋[1] 吕文宏 赵立新 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]陕西中能煤田有限公司,陕西榆林719000

出　　处：《煤炭科学技术》2013年第12期11-14,共4页Coal Science and Technology

基　　金：中国煤炭科工集团有限公司科技创新基金资助项目(2011MS014);天地科技股份有限公司技术创新基金资助项目(KJ-JJ-2011-KC-SJ-06;KJ-2012-TDKC-08);天地科技股份有限公司开采设计事业部生产力转化基金资助项目(KC-SCLZH-2012-04)

摘　　要：为确定高水膨胀材料条带充填开采引起地表沉陷的主控因素,根据王庄煤矿高水膨胀充填材料的特点,针对覆岩类型、充填率、充填体强度3个主要因素,利用数值模拟方法对3个因素的3个不同水平条件下引起地表沉陷进行正交试验分析。结果表明:充填率为高水膨胀材料条带充填开采地表沉陷的主控因素,充填率由50%提高至70%时,地表最大下沉量减少50%以上;选择合适的充填率,条带充填开采可以获得良好的地表沉陷控制效果。In order to determine main control factors of the surface subsidence caused by strip backfill mining with high water swelling ma- terial, based on the features of the high water swelling backfill material in Wangzhuang Mine, according to the three main factors of the o- verburden strata type, backfill rate and backfill mass strength,the numerical simulation method was applied to the orthogonal test analysis on the surface subsidence caused by the three different levels of the three factors.The analysis results showed that backfill rate was main control factor to control surface subsidence caused by the strip backfill mining with the high water swelling material, the backfill rate was increased from 50% to 70% and the max surface subsidence value was reduced over 50%.With a suitable backfill rate,strip backfill min- ing could have excellent control effect of the surface subsidence.

关 键 词：高水膨胀材料 条带充填开采 覆岩类型 充填率 充填体强度 

分 类 号：TD327[矿业工程—矿井建设]