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通过对XRJ1水文兼注浆试验孔、XRJ2注浆检查孔、水源井1号、水源井2号抽水试验资料的分析与研究,认为XRJ2注浆检查孔出水量(相同降深)较XRJ1孔减小了近60%的主要原因是XRJ1钻孔注浆影响所致,与XRJ2孔在抽水试验中使用的桥式骨架过滤器没有关联。针对目前《煤炭资源勘探抽水试验规程》中关于过滤管孔隙率的要求,提出了抽水钻孔过滤管类型与孔隙率选择的思考与建议。
XRJ2 grouting hole, XRJ2 grouting hole, water source well No. 1 and water source well No.2 pumping test data analysis and research, that XRJ2 grouting inspection hole water (same depth) than XRJ1 hole minus The main reason for being as close as 60% smaller is due to the grouting effect of the XRJ1 borehole and not to the bridge skeleton filter used in the pumping tests of the XRJ2 well. Aiming at the requirement of the porosity of the filter tube in the “Coal Resources Exploration and Pumping Test Regulations”, the author puts forward the thinking and suggestions on the type and porosity selection of the filter tube in the pumping borehole.