SU723143A1 - Method of working coal seams - Google Patents

Description

one

The invention relates to the mining industry and can be used in the development of coal seams.

There is a method of development of coal seams, including the excavation of the reservoir stripes in the fall of the wells. Hydraulic assemblies 1.

There is a known method of developing coal seams, which includes conducting wells and excavating coal with a jetting unit from the wells in two bands in the fall, ahead of the clearing line of one strip with the line of the other strip 2.

However, both methods are not sufficiently effective due to the drilling of wells by collapsed lateral rocks and the sticking of their water jet organs by them.

The purpose of the invention is to provide high performance monitors.

The goal is achieved by unfolding one of the wells by cutting a connecting gap from an adjacent well and scouring the collapsed rock from the latter, with the lead between the cleaning faces of adjacent lanes

take into account the ratio

a, where C is the advance between the lines

faces, m;

L- - the angle between the cleaning line of the strip and the line perpendicular

well axis, hail; L is the length of the line for cleaning the strip, m.

On fkg.1 shows the scheme of mining; Fig 2 is a layout of one of the wells.

The method of developing coal seams is as follows: ncf & ne conduct delivery 1 and vent 2 drifts through wells 3,4, in which jetting aggregates 5,6 are placed. Plast

work out the stripes 7.8 in the fall, leaving the pillars in the developed space 9. Advance between the line 10 of the clearing

one strip and line 11 of the clearing of the bottom of the other strip is taken from the ratio:

b sin dLLi. .

where e is the advance between the lines

30 faces, m;

Claims (1)

Claim A method of developing coal seams, including conducting wells and extracting coal from the hydromonitor units from the wells with two adjacent fall strips ahead of the production line of one strip to the bottom line of the other strip, which is related to the fact that, in order to ensure high performance of hydraulic monitors due to efficient re-drilling of wells in the event of collapse of the lateral rocks and sticking of the hydromonitor organs, expansion of one of the wells is carried out by cutting a drilling gap from an adjacent well and erosion ennyh rocks from the latter, wherein the lead lines between ochist5 GOVERNMENTAL faces adjacent strips taken from the ratio: £ = sin <AL <, where £ is the lead between the lines q of faces, m; <<, is the angle between the line of the working face of the strip and the line perpendicular to the axis of the well, deg; L is the length of the lines of the face, strip, m