三○五七厂主水源一号井,井深179.6米,出水量180吨/小时,水质很好,一九七一年六月投入运行。使用过程中,由于采用大流量抽水,地下喀斯特裂隙径流速度过大,造成岩粒淤积井底。一九七六年测定,井深132米,出水量100吨/小时,水质亦受地表水污染。由于出水量降低,严重威胁工厂的生产和生活。若另开水源,投资较大,且勘探队任务忙,无法 March 5, 2007 The main source of water well No. 1, well depth of 179.6 meters, 180 tons of water per hour, water quality is very good, put into operation in June 1971. In the course of using, due to the adoption of large-flow pumping, the velocity of underground karst fissure runoff is too large, causing the silt to deposit silt bottom. Measured in 1976, 132 meters deep, the water output of 100 tons / hour, water quality is also subject to surface water pollution. Due to the decrease of water output, it seriously threatens the production and life of the factory. If another source of water, a larger investment, and the exploration team busy, can not