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建国以来,我国大水矿床的防治水工作取得了较大成就,积累了不少经验。金岭铁矿、凡口铅锌矿、水口山铅锌矿及湘潭锰矿等较成功地采用了巷道放水孔疏干方法,效果良好,保障了生产与人身安全。其他如河北玉泉岭铁矿、山东莱芜铁矿、湖北叶花香铜矿等也进行放水试验,取得不少经验教训。本文结合我国几个大水矿床的生产实践,粗谈巷道放水孔疏干方法,错误与不足之处,恳请读者批评指正。 (一)适用条件 巷道放水孔疏干法是借助于巷道峒室内放水疏干钻孔降低地下水位的疏干方法。凡被疏干含水层中为重力水时,尤其是矿床的一侧为隔水层或弱含水层、另一侧为含水较丰富的岩溶裂隙含水层(埋藏深度可以超过100米)时,适合于巷道放水孔疏干。它不受含水层透水性、富水性和埋藏条件等限制。 (二)巷道放水孔疏干工程的布置原则 巷道峒室布置在隔水层或弱含水层中(这样比较安全),借助于峒室、放水孔、打入式过滤器、直通式放水钻孔对含水层进
Since the founding of the People’s Republic of China, great achievements have been made in prevention and control of waterworks in the flood water deposit in China, and a lot of experience has been accumulated. The Jinling Iron Mine, Fankou Lead-Zinc Mine, Shuikoushan Lead-Zinc Mine and Xiangtan Manganese Mine have successfully adopted the drainage method for drainage of tunnels, which has good effect and guaranteed production and personal safety. Others such as Hebei Yuquanling Iron Mine, Shandong Laiwu Iron Mine, Hubei Yehuaxiang Copper Mine also carried out water diversion tests and obtained a lot of experience and lessons. Combined with the production practice of several large water deposits in our country, this article talks about the methods, errors and shortcomings of the diversion holes in tunnels, and urges the readers to criticize and correct them. (A) the conditions for application Roadway drainage hole Dredging method is through the tunnel 峒 indoor drainage dredging to reduce the groundwater level drying method. Where the diverted aquifer is gravitational water, especially if the deposit is water-impermeable or weakly aquiferous on one side and aquifer rich in karst fractures on the other side (buried more than 100 meters deep), it is suitable Drainage holes in the tunnel Dredging. It is not subject to aquifer permeability, water-rich and buried conditions and other restrictions. (B) of the tunnel drainage hole Drainage Engineering principles of the roadway 峒 room layout in the aqueduct or weak aquifer (which is relatively safe), with the help of room, drain hole, break-in filter, straight-type drainage hole Aquifer into