摘要
为了避免10101工作面初次来压时顶板大面积垮落的灾害,决定在工作面推进6 m后对顶板实施深孔预裂爆破。研究给出炮眼布置方式及爆破方式,确定了强制放顶时的合理装药参数,得出了炮眼直径与最小抵抗线间的关系式。结果表明,通过强制放顶使10101工作面顶板的初次垮落较充分,保证了工作面的安全回采,可为类似条件的矿井开采提供参考。
To avoid roof falling hazard of 10101 working face during the first weighting, deep hole presplitting blasting on roofs was conducted after the working face advancing over 6 meters. This paper presented holes layout and patterns and determined the reasonable charge parameters during forced caving. The relation was found between the diameter of blasting-holes and the minimum resistance line. The results showed that the force caving ensured more roof falling and safe mining, which could be future reference for the similar mining.
出处
《山西煤炭》
2013年第3期54-56,共3页
Shanxi Coal
关键词
浅埋煤层
综采工作面
深孔爆破
强制放顶
shallow-buried coal seam
fully-mechanized working face
deep hole blasting
forced caving
