Discussion on the meaning of the working duration for mine constructionYang Huaimin, Zhao Xiuchen13-14
Brief analysis of the optimized design for power supply system of the underground main substation and the equipment selection of Lengquan mineZhang Jianmin21-22
Analysis of the travelling resistance of the bucket- wheel excavator of double - crawler type and its applicationPeng Jianping29-31
Calculation method for the loss of prestress effected by the non - free contraction and creep deformation of the prestressed concrete structureHuang Zhuangfei36-42
Technological design of the chemically intensified primary disposal of the sanitary sewage of mine areaLi Fuqing45-46
