关于放顶煤综采放煤步距的理论探讨  

THEORETICAL STUDY OF OPTIMAL COAL DRAWING INTERVAL IN FULLY MECHANIZED FACE USING SUB-IEVEL CAVING METHOD

作　　者：于海涌[1] 张海戈[1] 

机构地区：[1]中国矿业大学北京研究生部

出　　处：《煤炭学报》1993年第4期37-42,共6页Journal of China Coal Society

摘　　要：在实际观测基础上,把已垮落破碎的顶煤抽象为松散介质,通过相似材料模拟实验,全面分析了放煤步距对顶煤回收率的影响,从而提出了合理放煤步距的新概念,同时利用松散介质放出椭球体理论建立了确定合理放煤步距的数学模型,为在各种放顶煤条件下选择合理放煤步距确立了定量关系。Based on field observations and measurement, the caved broken roof coal was assumed to be a loose medium. This paper made a comprehensive analysis of the effect of coal drawing interval on recovery rate of roof coal by making simulation test of a model built with equivalent materials. A new concept of optimal drawing interval was proposed. A model of optimal drawing interval was established based on the theory of drawing ellipsoid in loose medium. The optimal interval of drawing can be induced depending upon the varying conditions of longwalls using sub-level caving method.

关 键 词：放顶煤 放煤步距 综采 采煤 

分 类 号：TD823.97[矿业工程—煤矿开采]