The basic situation of coal occurrence in coal mining area
(2) the occurrence characteristics of coal in the corner coal, the complex condition of the corner coal, the main features are as follows: 1The irregularity of the shape of a block with irregular shapes such as triangle, trapezoid, leaf shape, etc.It is decided that the existing large scale fully mechanized coal mining equipment is not adaptive; the two is the instability of coal thickness changeQualitatively, that is, by the influence of the geological factors, such as fault, erosion zone and so onThe adoption of the existing E art equipment is unreasonable; three is the complexity of mining conditions,That is to say, the surrounding area is affected by the mined out area or fault structural beltFragmentation, water, fire, gas and other natural disasters threatening, from a security point of view need to increase technologyManagement measures
(1) the origin of the edge coal. The main reasons for the formation of edge coal are as followsThe arrangement mode of the utility model is that the straight groove and the cutting hole are directly connected to form a cutting edge triangle coal,Is the formation of the edge of the coal artificial factors; two is affected by the fault and geological structure, can not ruleIt is a natural factor for the formation of the edge coal to arrange the complex block of the working face. ThreeThe coal pillar and the coal pillar in the mining area have a certain mining value:
1.1 coal seam corner coal occurrenceIn recent years, the large-scale mechanized production mode and formal mining layoutThe utility model causes the existing production area to leave the side angle residual block section and various small coal pillarsAngle coal at
