采矿与安全工程学报2016，Vol.33Issue(4)：597-603,7.DOI:10.13545/j.cnki.jmse.2016.04.005
近距离煤层充填上行开采临界充实率设计
The design of critical filling ratio in close distance coal seams by upward backfill mining technology
摘要
Abstract
Analyzing mechanics of overburden movement between traditional collapse upward mining and backfill upward mining, this paper has found that it would fail to mine in a certain close distance coal seams because upper coal and rock structures are damaged when applying traditional collapse up-ward mining. But backfill upward mining can reduce the damage level of the upper coal seam with a certain filling ratio. Using composite beam limit rupture and plastic zone development height discrimi-nance to design filling ratio, the condition of backfill upward mining feasibility has been proposed, and then the backfill upward mining critical filling ratio has been obtained. Results have shown that accord-ing to geological conditions of Papaya mine , when upper coal seam (9# coal) does not break, the critical filling ration of coal mining in sub-coal seam (10# coal) is 82.1%, when plastic zone development height of sub-coal seam (10# coal ) reaches upper coal seam (9# coal), the critical filling ratio of the former is 70.4%, which means when implementing backfill mining 9# coal in Papaya mine, critical filling ratio for backfill mining is 82.1%.关键词
上行充填开采/近距离煤层/数值模拟/充实率Key words
backfill upward mining/close distance coal seams/numerical simulation/filling ratio分类
矿业与冶金引用本文复制引用
黄鹏,李百宜,肖猛,陈志维,裴玉龙..近距离煤层充填上行开采临界充实率设计[J].采矿与安全工程学报,2016,33(4):597-603,7.基金项目
国家自然科学基金创新研究群体项目(51421003)；中国矿业大学英才培育工程专项项目(2014YC02)；江苏省“青蓝工程”项目 （51421003）
