论文部分内容阅读
一、水文钻探应当用PHP泥浆在水文地质钻探中，常常遇到第四纪松散地层，以往用泥浆作冲洗液。但是，含水层易被堵塞影响施工质量。同时，孔底岩粉不能得到及时排除，影响钻进效率。为此我们使用PHP泥浆，解决上述问题。根据我队近几年来的使用体会，采用PHP泥浆有以下几个优点：1．钻进效率高。在细粉砂地层，效率提高三倍。2．减少对含水层的堵塞。凡是用PHP泥浆施工的钻孔，出水量均比普通泥浆施工的钻孔为大，有的孔出水量要大好几倍。
First, hydrological drilling should be used PHP mud In hydrogeological drilling, often encountered Quaternary loose formation, the past with mud as a rinse. However, aquifers are easily clogged and affect the quality of construction. At the same time, the bottom of the rock powder can not be excluded in time, affecting the drilling efficiency. For this we use PHP mud to solve the above problem. According to my team experience in recent years, the use of PHP mud has the following advantages: 1. High drilling efficiency. In fine silt formations, the efficiency is tripled. 2. Reduce clogging of aquifers. All mud holes with PHP construction, the amount of water than the average drilling mud for the construction of a large hole, some wells out to several times larger.