The utility model discloses a drilling resistance mine overflow structure, which is a pipe buried in the borehole wall, drilling position is located in the casing, the casing is retained in the tail shaft, a stop valve is used for opening and closing in the tail casing, drilling rod through the sleeve and the open end the valve in drilling in drilling. The utility model can improve the safety of construction drilling and effectively prevent a large overflow of water or gas at a short time.
【技术实现步骤摘要】
【技术保护点】
1.一种煤矿井下钻孔施工阻溢结构,其特征是在钻孔井壁(2)中埋置一套管(3),钻孔位置位于套管(3)中,所述套管(3)的尾部保留在井筒中,在所述套管(3)的尾部设置一可启闭的截止阀(1),钻孔钎杆(4)穿过套管(3)和开启的截止阀(1)在钻孔位中钻进。
【技术特征摘要】
【专利技术属性】
技术研发人员:朱翔斌,张纯如,莫庆军,江维中,
申请(专利权)人:淮南矿业集团有限责任公司,
类型:实用新型
国别省市:34
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。