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广西大厂高峰锡矿掘进探采斜井时,在距井口380米处遇高压含水层,水压为16Kg/cm~2,涌水量最大为300T/h,致使斜井淹没,施工被迫中断。为创造打干井、打干巷的条件,提高掘进工效和工程质量,拟采用井下水平钻孔注浆堵水施工方案。1987年3月广西有色地质勘探公司二一五队承接了此项钻探任务,在540和537礃子面共施工注浆堵水钻孔11个,总进尺275.56米,注浆835m~3,成功地堵住了含水层。
When Guangxi Dachang Gaofeng tin mine excavation exploration inclined shaft, 380 meters away from the wellhead encountered high pressure aquifer, water pressure of 16Kg / cm ~ 2, the maximum water inflow of 300T / h, resulting in inclined shaft submerged, the construction was forced to interrupt . In order to create the conditions for drilling and drying lanes, improve tunneling work efficiency and project quality, it is proposed to use horizontal underground borehole grouting to block construction plans. In March 1987, Guangxi Nonferrous Geological Exploration Company (TWG15) undertook this drilling task. During the drilling of 540 and 537 slabs, a total of 11 grouting holes were drilled for grouting, with a total footage of 275.56 meters and a grouting of 835m ~ 3. Clogged aquifers.