论文部分内容阅读
压水试验是了解岩层的渗透性,利用所得出的单位吸水量 W 作为设计上确定防渗幕深度的依据,是水工建筑初步设计勘查阶段中必不可少的一项重要工作。除了利用天然地形的自然供水方法进行钻孔压水较好外,目前,在没有更好的方法代替水泵压水前只有尽量设法克服水泵压水所产生的一切缺点,对于既省压水时间、提高钻孔纯钻进时间,和提前完成任务,有很重要的作用。下面是我在野外压水试验实际工作中的一点体会,可能有许多不对的地方。1.压力表:压力表是需要在一定时间内进行校核工作,校核压力表的指示是否正常,及其误差大小,
The water pressure test is to understand the permeability of rock formations, and the use of the unit water absorption W obtained as a basis for determining the depth of the anti-seepage curtain is an indispensable part of the preliminary design exploration phase of the hydraulic construction. In addition to using the natural water supply method of natural terrain for drilling water pressure, at present, only in an effort to overcome all the shortcomings of the water pump pressure before the water pressure pump is replaced by a better method. It is very important to increase the drilling time and complete the task in advance. The following is my experience in the actual work of the field water pressure test, and there may be many wrong places. 1. Pressure gauges: Pressure gauges need to be checked in a certain period of time, check the pressure gauge instructions are normal, and its error size,