微水试验技术的应用研究

A study on application of slug test

水文地质试验是工程地质勘察的重要组成部分,对工程设计及施工具有重要作用。常规的水文地质试验,包括稳定流试验和非稳定流试验的现场操作过程,均具有试验周期长,设备数量多,工作效率低等特点,而微水试验作为一种相对快速的水文地质试验方法,在一定程度上弥补了这些不足。本文通过对微水试验的理论基础、试验方法以及关键技术的分析,并结合铁道第三勘察设计院集团有限公司研制的"地层渗透系数快速测定系统",通过现场实践,进一步优化微水试验的应用效果,以期达到缩短水文试验周期,降低现场技术人员的工作强度和试验费用的目的。

The hydrogeological test is the important part of the geological investigation, and it is very useful to the engineering design and construction. The practical process of the conventional hydrogeological test, including steady flow pumping test and unsteady flow pumping test, is long time costing and needing more equipment with poor efficiency. But the slug test is one kind of relatively quick hydrogeological test that can mend such shortage in some degree. This paper analyzes the basic theory, testing measurements and key technology of the slug test to optimize the application＇s result in practical testing with the auto hydrogeological parameters monitoring and data processing system developed by The Third Rrailway Survey and Design Institute Group Corporation, and this technology could shorten testing time, decrease technician＇s working strength and reduce testing consumption.