论文部分内容阅读
在水文地质钻探中使用泥浆，过去水文地质规范有所限制。尤其不许在基岩破碎带含水层和断裂、溶洞等地层，用泥浆护壁钻进。如1982年我队在某地F_5断裂上施工的1~#孔，因地层极为复杂又不许使用泥浆钻进，免强维持到孔深107米处（即断裂带），孔内严重坍塌掉块，经跟管钻进和其它措施反复处理无效，最后被迫提前终孔。83年，为进一步探明该地区地下热储，在同一F_5断裂上施工5~#钻孔。经批准使用PAM泥浆护壁钻进，有效地控制了孔内大量掉块卡钻和蹩车，抑制了断裂
The use of mud in hydrogeological drilling has been limited in the past by hydrogeological codes. In particular, not allowed to bedrock broken aquifer and fractures, caves and other formations, with mud retaining wall drilling. For example, in 1982, I ~ # holes constructed on the F_5 fault in a certain area were extremely complicated and the mud was not allowed to be drilled because of the extremely complicated formation. Since the formation of a hole was 107 meters deep (ie, the fault zone) , After repeated follow-up drilling and other measures invalid, eventually forced to final hole. For 83 years, in order to further ascertain the underground thermal storage in this area, 5 ~ # boreholes were constructed on the same F_5 fault. Approved the use of PAM mud wall protection, effectively control the hole a large number of dropped stuck and broken car, inhibited the fracture