摘要
通过综合机械化顶煤开采的相似材料模拟研究,论述顶煤处于散体状态时,随放项煤工作的进行,产生了脊背煤炭损失,底板落煤堆积损失,产生了矸石的混入,要增加煤炭的回收率,减少矸石的混入,应根据具体条件,确定合理的采放比,合理的放煤步距,控制好上覆煤,岩层的破坏、移动和冒落,以取得更好的经济效益。
Through the analogous material imitation study of the full-mechanized top coal caving.this thesis expounds when the top coal is in loose status,the back loss,the floor deposit loss and the mixing of rocks are generarcd. In order to increase the percentage of recovery a.id decrease the mixing of dis to gain better economical beneflts.the reasonable drawing ratio and drawing internal should be decided according to particular conditions and the destruction,clisplacement and falling of the top coal should be controlled efficiently.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
1998年第3期233-236,共4页
Journal of Liaoning Technical University (Natural Science)
关键词
综采
放顶煤
顶板
回收率
顶爆冒落规律
采煤
top coal
full-mechanixed top coal caving
roof: percentage of recovery
