摘要
针对乌鲁木齐矿区碱沟煤矿急斜近距煤层分段放顶煤开采过程中,同一开采区段内任一煤层开采将对邻近煤层构成破坏性影响的问题,通过数值和相似模拟的方法,对独立开采和联合开采方式下覆岩运移规律进行了对比研究,探讨了联合开采的科学性.研究表明:联合开采并未引起围岩破坏运动范围的急剧增加,围岩运移破坏范围的增大是有限的,不会造成灾变性危险;联合开采是解决急斜近距较薄厚煤层开采困难的有效途径.研究为碱沟煤矿B19,B20煤层联合开采工业性试验提供了科学依据,对其它具有类似开采条件的煤层也具有一定的借鉴意义.
Independent mining in steep and close seam can influence the next mining of the adjacent coal seam destructively in the same section by means of horizontal section top-coal caving at Jiangou coal mine in Urumqi mining area. Using numerical and similar simulation, the movement rule of overlying strata was researched for independent mining and united mining, the scientific of united mining in steep and close seams was discussed. The results show that, united mining neither increases the range of damage and movement sharply, nor brings about the disaster. So united mining is an effective way to solve the mining problem in thinner of the steep close and thick seam. The results can provide scientific basis for industrial test of united mining B19,B20 seams in Jiangou coal mine,also have successful experiences for similar mining.
出处
《采矿与安全工程学报》
EI
北大核心
2009年第2期234-238,共5页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(50274058)
高等学校博士点专项基金项目(20040704002)
关键词
急斜近距煤层
联合布置
联合开采
围岩控制
steep and close seems
united arrangement
united mining
surrounding rock control
