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日前,由中煤三建七十一处施工的国内第一冻结深井济西矿井主井筒安全到底,工程质量全优。 严密组织抓管理 济西矿井位于山东省齐河县境内,主井深度567.5米,其中冻结段457.78米,是当时国内冻结段最深的一对矿井,设计生产能力45万吨/年。七十一处于2002年7月8日中标后,为保证高质
Recently, the main wellbore of the first frozen deep well Jinxi mine in China built by the No. 71 Coal Mine of China Coal was safe and the project quality was excellent. Strict organization and management The Jinan Mine is located in Qihe County, Shandong Province. The depth of the main shaft is 567.5 meters, of which the freezing section is 457.78 meters. It was the deepest pair of mines in the domestic freezing section at that time, with a designed production capacity of 450,000 tons per year. Seventy-one is after winning the bid on July 8, 2002, in order to ensure high quality