我局四台沟矿是全国第一座年设计能力500万吨的特大型的现代化矿井和年处理能力530万吨的矿井选煤厂,已于1991年12月13日同步建成并通过国家验收,正式移交生产。整个矿井建井期7年。经初步测算,矿井吨煤投资约200元,选煤厂吨煤投资约27元。国家验收委员会认为:矿井设计先进,开拓部署合理,机械化程度高,建设周期短,创特大型矿井和选煤厂同步建成的好水平,工程质量好,整个工程项目总评为优良。1.从实际出发,确定合理的建设设计方案。实践使我们体会到,缩短建井工期,特别 Our company Sitaigou Mine is the first large-scale modernized mine in our country with annual design capacity of 5 million tons and a coal preparation plant of 5.3 million tons of annual processing capacity. It was completed and passed the national inspection on December 13, 1991 , Formally transferred to production. The entire well construction period of 7 years. After preliminary calculation, mine coal investment of about 200 yuan per ton, coal preparation plant coal investment of about 27 yuan. The State Acceptance Committee believes that the advanced design of the mine, the open and rational deployment, the high degree of mechanization, the short construction period, the large-scale mine and the coal preparation plant are well established simultaneously, and the project is of good quality and the overall project is rated as excellent. 1. From the reality, to determine a reasonable design of the building. Practice makes us realize that shortening the construction period, in particular