深孔预裂爆破强制放顶是防治顶板大面积来压的有效方法,论文针对凉水井煤矿埋藏浅、顶板基岩薄、上覆沙漠覆盖层的特点,以42109工作面为例,总结了采用PVC管装药,黄泥制作炮泥,木楔封堵炮眼,毫秒延期雷管导爆索起爆的深孔预裂爆破强制放顶技术,提高了爆破效果,降低了初次来压强度和来压步距,实现了综采工作面的安全生产。 According to the characteristics of Liangshuijing coal mine being shallow buried, roof bedrock thin and overlying the desert overburden, taking 42109 face as an example, the author summarizes the use of PVC pipe charge, production of clay by Wong Nai, mound closure of the hole, detonation detonator detonation delay millisecond detonation blasting deep hole pre-cracking blasting technology to enhance the blasting effect and reduce the initial pressure to the pressure step Distance, to achieve the safety of fully mechanized mining face.