北票矿务局在煤与瓦斯突出急倾斜煤层中使用水采的实践体会

Practice and Experience in Applying Hydraulic Coal Mining Method by Beipiao Mining Administration in its Steeply-inclined Coal Seams with Coal and Gas outburst Hazards

北票矿务局从１９５８年开始水力采煤，至今已近４０年。北票煤田主要为急倾斜中厚煤层，各开采矿井均属高沼气矿井，具有煤与瓦斯突出和煤尘爆炸危险。文中较全面论述了北票局水采近４０年来取得的成绩、经验，并指出了现生产中存在的一些问题和提高水采产量和效率的途径。

With a history of nearly 4 decades in applying hydromining method from 1958,the coal seams worked in Beipiao coalfield are mostly steeply-inclined, medium-thick,highly-gassy seams with coal and gas outburst hazards.The paper sums up the achievements and experience in using hydromining method during the past 4 decades in this coalfield, points out the problems currently encountered and the approach for enhancing the output amd efficiency of the method.