在钻进过程中，应随时清理孔口积土，遇到塌孔、缩孔等异常情况，应及时研究解决。
In the drilling process, should be kept clean hole soil, encountered hole collapse, shrinkage and other abnormal situations, timely solution.
在钻进过程中，应随时清理孔口积土，遇到塌孔、缩孔等异常情况，应及时研究解决。
In the drilling process, should be kept clean hole soil, encountered hole collapse, shrinkage and other abnormal situations, timely solution.
应用推荐