allowable draft

Based upon analysis of drainage accident encountered the determination of permissible depth of water,water discharge amount of fire fighting pump in drainage design of building basement are introduced,in order to correctly determine the designed water discharge capacity of basement to meet engineering requirements and reduce waste.

对建筑地下室的排水种类、常用的排水设计进行了介绍,通过对建筑地下室排水事故的分析,确定建筑地下室允许水深以及发生火灾消防时排水泵的排水量,以合理设计地下室的排水能力,使其达到既能满足排水要求又不浪费的目的。

The allowable outflow of water feed tube well in loose aquifer is both to satisfy the"macroscopic"definition demand of ground water allowable mining quantity and to satisfy two parameters of current velocity of tube well consider from s ervice life of water feed tube well:a ll.

每一眼管井在井结构确定的条件下,有一个最大允许出水量,而盲目追求增大出水量,势必造成管井涌砂,过滤管腐蚀和堵塞的加剧。