1Simulation of Two Kinds of Dispatch Truck Way in Excavator-trunk TechnologyLI Jian-jun1-32Approach of Enhancing Exploitation and Loading and Transportation Efficiency in South Open-pit Coal Mine of Huolinhe4-5,83Application of BP Neural Network in Displacement Prediction of Mine SlopeWANG Jun-feng, ZHANG li-ying6-84Analysis of Opencast Slope Stability in Frozen Soil Area9-105Selective Application of Detonating Cord and Non-fulgurite Detonating Network11-126Existing Problem and Countermeasure of Hard Rock Blasting in South Open-pit Coal Mine of Huolinhe13-147Thermal Analysis of Coal Pulverizing Equipment of Double-ended Air Swept Coal MillZANG Ting-long15-198Application of GA-BP Model to Appraise Groundwater QualitySHAO Li-nan, LIU Zhi-bin20-229Optimization of Groundwater Quality Monitoring Points in the Area Contaminated by Leachate of Opencast Dumping AreaZHONG Shuang, LIU Zhi-bin23-25,2810Reason Analysis of Inflated Oil Temperature of Hydraulic Transmission System in Construction Machinery and Equipment26-2811Building and Information Service of Electronic Reading RoomWANG Jian29-30,3212Design of the Tansmition System's Speed Changing Mechanism of the Shearer's Cutting UnitZHANG Dong-sheng, DU Chang-long31-3213Lubricating System Improvement of Running Gear in Bucket Excavator33-3414A Method of Geological Modifying Map Based on ObjectARX in OpencastDI Peng-hao, WANG Zhi-hong35-36,4915Application Study of Spiral Expanding Bottom Infuse Slurry Technology in Northeast Area of ChinaLAN Juan37-3816Processing Scheme of Freeway Squashy Foundation in Pound Area39,4217Experimental Research of Pit Water Purification Treatment in Fuxin Mine Area40-4218Probing into Safety Control in Open-pit Coal Mine43-4419Lignite Fire Breeding and Control Measure in Songjitun Open-pit Coal Mine45-4620Practice and Exploration of Carrying on Safe Behavior Skill Study47-49 