Simulating analysis of the mining of gentle-dip, medium-thickness and instable-roofed orebody and roof support of stope;

Test and study of overhead guard vibration of a type of internal-combustion forklift truck;

Study of roof support and ore blasting in the stope where the breasting-shrinkage method is employed;

This article introduces the concept and principle of a expert system of roof support,its process of developing,main function and its guiding meaning in coal mine production is also contained.

Study on the optimization of stope structure parameters under the protection of top leaf;