摘要
以岱庄生建煤矿3上煤层开采为例,综合运用数值模拟、经验公式预计以及现场实测3种方法来确定其导水裂缝带发育高度,并对比分析其优缺点,以此提高结果的准确度。结果表明:3种方法对应的结果分别为60,43.6和44.7m,而前两种方法具有其局限性,因此综合确定了31302工作面3上煤层开采顶板导水裂缝带高度为44.7m。
It taking upper coal seam mining of 3# coal seam in Daizhuang Shengjian coal mine as example, water flowing fracturedzone height was confirmed by the following three method, numerical simulation, empirical formula and field measurement, and thenthe accuracy rating of results was improved according contrastive analysis of it’ s merits and demerits. The results showed that the re-sults of the three methods were 60m, 43. 6m and 44. 7m, respectively, the former two method had it’ s limitations, so water flowingfractured zone height of upper coal seam mining in 31302 working face was confirmed as 44. 7m.
出处
《煤矿开采》
北大核心
2018年第1期30-32,42,共4页
Coal Mining Technology
基金
"十三五"国家重点研发计划项目(2017YFC0804100)
国家自然科学基金项目(41402250
41372290)
关键词
导水裂缝带
数值模拟
经验公式
现场实测
water flowing fractured zone
numerical simulation
empirical formula
field measurement
