The invention discloses a construction method of underground structure into hole, put in water bearing sand drilling on the ground at least comprises the steps of: sealing, bearing layer is arranged at inner surface of the through hole and the corresponding design in underground structure; drilling from the ground to the underground structure construction to the underground structure of the top surface and form a hole on the top surface; step two, from the ground through the aquifer, to process hole a protection tube and the protection and technology of hole mouth tube; step three, the protective tube drilling down, through the underground structure; step four, will continue to run in a conical drill press through hole. Until the sealing pressure of penetrated layer. As a result of adopting the construction steps, the waterproof effect of the existing hole forming method is improved. The present invention also adopts special drill design, the drill piece comprises a tapered running, the conical grinding piece and a through hole inner wall extrusion hole in the inner wall and the outer surface of the conical grinding pieces tightly, thereby greatly improving the water resistance of the hole forming process.
【技术实现步骤摘要】
【技术保护点】
１．一种在地面钻穿含水砂层中地下结构的成孔工法，用于在所述地下结构上形成一透孔，至少包括以下步骤：步骤一，在所述地下结构上与设计透孔处对应的内表面处设置密封承压层；从地面向所述地下结构钻孔，施工至所述地下结构的顶面并在所述顶面上形成一工艺孔；步骤二，从地面穿过所述含水砂层，向所述工艺孔打设一保护管并使所述保护管与所述工艺孔衔接；步骤三，在所述保护管中下钻件，打穿所述地下结构；步骤四，继续将所述钻件中的锥形磨合件压入所述透孔，直至打穿所述密封承压层。
【技术特征摘要】
【专利技术属性】
技术研发人员：曹化春，秦一雄，张景钰，周卫，倪元园，王先锋，
申请(专利权)人：中煤矿山建设集团有限责任公司，
类型：发明
国别省市：34
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