Study And Application Of Technology Of Gequan Mine East Well Caving Coal Mining

This paper is to study the background to the East Mine of Gequan mine11910working face as. The main mining working face8#and9#coal seam, the averagethickness of coal seam5.2m coal seam, complex structure, coal seam dip angle of3-11degrees. Using fully mechanized top coal caving mining, how to improve coalmining rate has been led by the group company and mine focus. Based on the impactof top coal caving mining parameters rate, simulation experiments in the laboratory,the comparison of different mining ratio, coal caving step distance, caving methodunder the condition of moving regularity of coal, and coal rock interface mining rate,analyzed and summed up the reasonable mining ratio, coal caving step distance,caving method and fully mechanized top coal caving face three machine, the workingsurface coal mining rate significantly, achieve high yield and high efficiency.In view of the special geological conditions of11910working face of this topicis to study three kinds of horizontal comparison test scheme:1) in coal caving step distance and caving method under the same conditions, thedesign of3different mining ratio, that is,1;1,1;1.5,1:2, analysis of different cavingmining rate than can be obtained.2) discharge ratio, caving method in mining under the same conditions, thedesign of3different coal caving step distance, that is, a sword and a discharge, twoknife, three knives put put, analysis of different coal caving step distance can recoveryrates obtained in the.3) in the mining and caving ratio, coal caving step distance under the sameconditions, the design of two kinds of coal way different, i.e., sequential cavinginterval caving, caving method can analyze different recovery rates obtained in the.Combined with the actual situation of the working face of the above-mentionedthree kinds of horizontal comparison experiment schemes are analyzed andsummarized, finally obtains the reasonable mining ratio, coal caving step distance,Through the in-situ practice examination experiment effect.