我们曾在某矿区1172孔(清水孔)抽水试验结束后,在原试段中重新灌浆、堵漏。洗孔后重作抽水试验。对比灌浆前、后的试验结果,以了解泥浆钻进对抽水试验质量的影响。现将情况简述如下: 一、抽水孔的基本情况 1172孔布在岩溶、裂隙发育的茅口灰岩中(灰岩为本矿区主要含水层),钻探施工中四处钻具突然下落(空洞),冲洗液全消 We have in the mining area 1172 holes (water hole) after the pumping test, in the original test section to re-grouting, plugging. Wash the hole again for pumping test. Compare the test results before and after grouting to understand the impact of mud drilling on the quality of pumping tests. Now the situation is briefly described as follows: First, the basic situation of pumping holes 1172 hole cloth in the karst, cracks in the Maokou limestone (limestone is the main aquifer in the mining area), drilling a sudden drop in four drilling (empty) , Rinse all eliminate