摘要
为了提高放顶煤效率,经对王庄煤矿43M5综放工作面切眼的顶板进行深孔松动爆破,使其煤层和岩层的层节理增强,煤岩裂隙增加,从而增强了煤体的可放性,减少了初采期顶煤空顶时间,无需反复升降支架,更有利于顶板管理。
To increase the top-caving efficiency,long-hole loose blasting was used in roofs on the 43M5 fully-mechanized mining face open-off cuts to reinforce the joint of coal and rocks,to increase the coal rock fracture in order to strengthen the capability of coal caving and to decrease empty roof time during the preliminary mining period.It was unnecessary to ascend or descend the support which was good for roof control.
出处
《山西煤炭》
2011年第12期55-56,共2页
Shanxi Coal
关键词
综放开采
深孔松动爆破
放顶
fully-mechanized mining
long-hole loose blasting
top-caving
