Features of overburden rock fracture in fully mechanized mining of Qidong Coalmine;

3 mining area,the now actual production condition in Taoshan Coal Mine,the useful featibility of fully mechanized mining in the thin coal seam mining is expounded.

In order to realize highly efficiency and make full use of the function of the equipment,the fully mechanized mining has been used.

2207 face of Chensilou Coal Mine,summarize the difficulty and the key point of the safety management of full-mechanized mining face with high inclined compound roof,adopt countermeasures to guard against the support crooked and guard against the scraper conveyer and mining machine to glide down.

Because of the complexity of full-mechanized mining stope of thick coal and the stope stress influenced by many factors, the paper studies the mine pressure display regular of full-mechanized mining stope induced by once mining in thick seam of a coal mine based on lots of field measurements.

The practice hasdemonstrated that backed double-unit fully-mechanized mining technique is feasible and efficient.

The essay describes how to improve productive efficiency of fully-mechanized mining in bankrupt coal mines.

The geological conditions of fully-mechanized mining is evaluated by iso-feature blocks and mathematics method,the scientific basis for the rational layout of the fully-mechanized working face are provided.

2 west mining area of Panyi Coal Mine,analyzing the overburden failure law of top slice,classifying and evaluating the overlying unconsolidated aquifers and weathering zone of base rock,and researching on the reason of water output from the working face of top slice as well as the cause of pressing bracket,we demonstrated the feasibility of fully mechanized coal mining on this.

56104 fully mechanized coal mining face in Xinzhuangzi Mine as the example and from the two points for the stability control .

Analysis of influence factor on fully mechanized coal mining;

Wall strengthen technology at combined mining face in three soft seam;

Way of lifting the single face output in combined mining face;

The development of hydraulic control technology of fully mechanized mining supporter;

Through the practice of installing the fully mechanized mining supporter under"three soft"condition in Yangliuyingying Coal Mine,this paper puts forward some practical experiences of the installation on the fully mechanized working faces.

The fully mechanized mining supporter has been widely applied in the coal mine production at present,but the installation is still quite difficult and the installation methods are various too.

Through complete analysis on the geological condition and the fully mechanized mining equipment lectotype of the Xinzhuang mine three_2 low-coal seam, the author considers science lectotype is the premise and guarantee of the low-coal seam high production and high efficient.

This paper expounds the utilization of the intellectualized fully mechanized mining equipment with large mining height in Tunlan Coal Mine, and expounds the problems appearing in the course of applying the intellectualized fully mechanized mining equipment with large mining height, and points out the superiorities of this equipment.