下向测压孔双聚防漏塞-水泥砂浆分时封孔工艺

Double Poly Leakproof Plug of Downward Pressure-measuring Hole-Cement Mortar Timeshare Sealing Technique

基于下向测压孔存在的钻孔施工时排渣、排水困难及封孔时难以保证封孔质量等实际问题,在传统方法基础上进行了改进,提出了加大钻孔深度、气举法排水和二次分时封孔的双聚防漏塞-水泥砂浆分时封孔工艺,并在现场进行了应用,取得了较好的效果。

There were the practical problems that mud and fluid discharged hardly, and it was difficult to guarantee the quality of hole sealing with drilling construction when downward pressure - measuring hole existed. On the basis of tradition method, an improvement scheme was put forward that increasing the drilling depth, fluid discharge by gas - lift method, double poly leakproof plug of twice timeshare hole sealing - cement mortar timeshare sealing technique. Then the scheme was applied in site and had achieved good effects.