Safety and high efficient coal mining technology for coal mining face with shield supports;

Ways to Improve Unit Productivity in Working Face with Flexible Shield Support;

Application of flexible shield support mining in the secondary inclined coal seam;

Coal mining method in the deeply inclined coal seams with hydraulic powered shield supports on single leg sustai;

Analysis and handle some question and hitch in the mining coal face of hydraulic powered shield supports;

This paper studies on the designation and application of fibrous shotcret in soft rock tunnel support system,makes tests according to different materials,different mixing amount and different kinds of trial model separately, and designs the lining of the tunnel based on energy method ,Utilizing toughness and fracture performance index of trial model.

Targeting at the practise in tunnel supporting,this paper studies and analyzes application of steel plastic blasted concrete in tunnel supporting,and suggestes feasible anchor post clearance when applying steel plastic blasted concrete under 2 different tunnel wall rock conditions.

By calculating the load-carrying ability,the angle between the canopy and the shield,and the stroke of the stubilising ram,the peper makes a detailed study of influences of the connection position dimensions on performances of two-leg shield supports using computer simulation analysis, and lays the theoretical foundation for designing the rational connection position dimensions.

Balance ram is a key component of a two-leg shield support.

Taking a two-leg shield support as an example,this paper presents the theory of the shield supporting ability areas.