Introduces the character, fundamental, technological process and system layout of jet well ground water lowering device.

简要介绍了射流井点降水装置的特点、基本原理以及装置的工艺流程及系统布置。

youdao

According to the general pattern of ground water lowering, this paper suggested a volume calculation method in the natural river courses in the freezing period.

根据地下水退水的一般规律，提出了针对天然河道封冻期流量推求方法的建议。

youdao

Marble karst development in Da-hong-shan mine caused a great deal of water bursting in mine shaft, sharply lowering ground water and large scale of surface subsidence.

大红山矿大理岩岩溶发育，由于突水造成井下大量涌水，同时引起地下水位急剧下降，引发了较大范围、较大规模的地面塌陷。

youdao