立井井筒表土段施工过程中,由于土质较为松软,常会出现井筒涌水的现象,如不及时采取相应的降水工艺,不仅会影响施工速度,也会影响施工质量。一般来说,井筒表土段降水工艺主要包括:注浆堵水、导水与截水、钻孔泄水和井筒排水等,本文主要阐述注浆堵水以及井筒排水的相关工艺,并对工艺内容以及工艺要点进行细致的阐述。 In the process of construction of vertical wellbore surface soil section, the phenomenon of well water gushing often occurs due to the looser soil quality. If the corresponding precipitation process is not taken timely, it will not only affect the construction speed but also affect the construction quality. In general, the wellbore surface section of the precipitation process include: grouting water, water and water diversion, drainage and wellbore drainage, etc., this paper describes the grouting and water wellbore drainage related technology, and process content As well as the process points elaborate.