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;

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.

Shoring technology of the Ahead of time to the sides hydrolic shield in the roadway;

The design and installation of an automatic sliding fully mechanized face end support in the application of a good security,the economy,technology and social benefits.

In view of the situation of fully mechanized mining face in Dongtan Mine, the delay-arrangement method of end hydraulic support is put forward to solve the practical problem of end support in haulage gate.