RU2258139C1 - Method for mine field of coal bed excavation - Google Patents

Abstract

FIELD: mining industry, particularly for bank excavation with the use of powered mining complex.

SUBSTANCE: method involves dividing mine field into columns along the strike by medium and end-on excavations alternating with paired air and belt blind drifts; developing the columns by means of powered mining complex along with rotating thereof through 180° relative belt drift ends after driving of bypass air workings, wherein air workings extend from end-on shafts for belt drift length; connecting dead end of air workings with blind drift, which is the nearest in mine field development direction, by diagonal face entry; driving bypass workings to connect belt drifts. Mining complex is rotated relative dead ends of air drifts along with reversing of mining complex conveyer and with coal conveyance by diagonal face entry. Diagonal face entries may be formed from dead ends of belt drifts to blind air drifts. Diagonal face entries also may be driven from blind belt drifts to blind air drift paths, wherein diagonal face entries reach end-on excavations and then mining complex rotation area along with coal conveyance by diagonal face entry.

EFFECT: elimination of mining complex remounting during total mine field development.

3 cl, 1 dwg

Description

The invention relates to the mining industry and is intended for the development of mine fields of coal seams using mechanized complexes.

There is a method of developing mine fields of coal seams using mechanized complexes with posts along the strike along which the posts are cut by ventilation workings connected by bypass workings, and paired dead-end conveyor workings are carried out between the ventilation workings. Pillars are worked out by a mechanized complex with a 180 ° turn relative to the dead-end zone of conveyor openings (see USSR author's certificate No. 810983, M. class. E 21 D 23/00).

The disadvantage of this method is the need to dismantle the complex after working out every two columns of the mine field and installing the complex to work out the subsequent columns. In addition, the excavation of long ventilation openings under ventilation conditions is quite difficult, which eliminates the possibility of cutting long posts along the strike.

A known method of developing mine fields of coal deposits (see USSR author's certificate No. 1218113, M. class. E 21 C 41/04, E 21 D 23/00), according to which the mine field is divided by the middle and flank openings (trunks in the case of sloping fields ), dead-end conveyor and ventilation drifts to the posts along the strike. Ventilation drifts are connected bypass workings at the flank workings (trunks).

The working out of the posts along strike is carried out by a mechanized complex with a 180 ° turn at the flank working.

The disadvantage of this method is the need for dismantling and installation of the complex when working out every two columns of the field.

The aim of the proposed method is the exclusion of remounting of the complex when developing the entire mine field.

In the present invention, which includes well-known features: dividing the mine field by middle and flank openings, alternating paired ventilation and deadlock conveyor drifts into pillars along strike, mining of posts by a mechanized complex with a 180 ° turn relative to the dead end faces of conveyor drifts after conducting bypass ventilation workings, delivered the goal is achieved by the fact that the ventilation drifts connected to the flank workings are carried out to the length of the deadlock conveyor drifts For example, the deadlocks of the ventilation drifts are connected by a diagonal split furnace with the conveyor drift closest to the mine field direction, the bypass excavations connecting the conveyor drifts, and the complex is turned around the zone of the deadlocks of the ventilation drifts when reversing the conveyor of the mechanized complex with coal transport along the diagonal cutting furnace.

In addition, to ensure safety when working in extended (up to several thousand meters) conveyor drifts, their deadlocks are connected by a split furnace with ventilation drifts.

The drawing shows a flow chart of sewage treatment when developing a mine field.

The method is as follows.

The mine field of the coal seam is cut using the main ventilation 1, track 2 and conveyor 3 workings (inclined shafts for steep coal fields) and ventilation flank workings (shafts) 4 and 5, as well as the top ventilation drift 6, and then using paired (parallel ) deadlock conveyor drifts 7, 8 and 9 and 10 located between them paired dead end ventilation drifts 11, 12 and 13 and 14 is divided into columns 15, 16, 17 and 18.

In a frontal split furnace 19, a mechanized complex is mounted. The ventilation drifts 6 and 11, 12 and 13, as well as the conveyor drifts 8 and 9 are connected respectively by the bypass workings 21, 22, 23, 20, carried out approximately along the arc of a circle relative to the centers A, B, C and D in the areas of the dead ends of the conveyor and ventilation drifts.

The diagonal split furnaces 24, 25 and 26, 27 respectively connect the dead ends of the conveyor and ventilation drifts with the ventilation and conveyor drifts in the direction of mining the mine field.

To work out the first column 15 from the frontal split furnace 19, it is enough to carry out a ventilation drift 6, deadlock conveyor drifts 7 and 8, deadlock ventilation drifts 11 and 12, bypass excavation 20 and a diagonal split furnace 24. Coal from the lava is delivered by conveyor of the complex to the conveyor drift 7, and then through failures to the conveyor drift 8 and then to the conveyor output (barrel) 3.

Airing is carried out by supplying fresh air through the ventilation output 1, the track output 2, the conveyor drift 8, then the conveyor drift 7, the complex, the ventilation drift 6 to the ventilation flank output 5.

When the complex is turned relative to point A, coal is transported directly from the lava along the conveyor drift 8 to the conveyor mine (trunk) 3, and ventilation is carried out by air supply through the conveyor drift 8, the complex (through the lava), bypass excavation 20, ventilation drift 11 and the flank ventilation output (trunk) 5.

After the complex is turned around point A and the pillar 16 is worked out, the split diagonal furnace 26 is gradually extinguished, and the lava intersects with the split furnace at one point, which eliminates a significant increase in rock pressure. In this case, coal transportation is carried out via conveyor drift 8, and ventilation by supply of fresh air through conveyor drift 8, the complex, ventilation drifts 11 and 12 to the flank ventilation output 5.

When the complex is turned relative to point B in the dead end face of the ventilation drifts 11 and 12, the conveyor of the complex is reversed, coal from the lava enters the zone of the complex's turn, and then it is transported through a split diagonal furnace 24 to the conveyor drift 9, which is transported in the direction of working out of column 16 to the first fault with the conveyor drift 10, which is transported in the opposite direction to the main conveyor output (trunk) 3.

Airing during the rotation of the complex relative to point B is carried out by supplying fresh air through the conveyor drift 10, the conveyor drift 9, the diagonal split furnace 24, the complex (lava), the bypass excavation 22, the conveyor drift 9 and further along the track 2.

After the complex is rotated relative to point B, the development of column 17 occurs as during the development of column 15, and the development of column 18 is carried out similarly to the development of column 16, etc.

Conducting diagonal split furnaces 26 and 27 can improve safety when working out long (up to several thousand meters) columns 15, 17, etc. mine field in case of emergency (for example, during fires), as people are provided with a fresh stream to flank workings 4 and 5.

In addition, the holding of diagonal split furnaces 26 and 27 to the trajectory of the dead end ventilation workings 11, 12, 13, 14, etc. allows you to carry out these workings first to the flank workings 4 and 5, and then to the complex turning zone (points B and D) with coal transport through these diagonal split furnaces and conveyor drifts to the average conveyor workout (barrel) 3.

Claims (3)

1. A method of developing mine fields in coal seams, including dividing the mine field with middle and flank openings, alternating paired ventilation and deadlock conveyor drifts into strike posts, mining the posts with a mechanized complex with a 180 ° turn relative to the dead ends of conveyor drifts after conducting bypass ventilation workings, characterized in that the ventilation openings pass from the side of the flank shafts to the length of conveyor drifts, a dead end of the ventilation holes The operation is connected by a diagonal cutting furnace to the conveyor drift closest to the mine field direction, bypass excavations connecting the conveyer drifts are carried out, and the complex is turned around the dead end faces of the ventilation drifts when reversing the conveyor of a mechanized complex with coal transport along the diagonal split furnace. 2. The method according to claim 1, characterized in that from the blind faces of the conveyor drifts, diagonal split furnaces are carried out to the ventilation deadlocks. 3. The method according to claim 1, characterized in that the split diagonal furnaces from the blind conveyor drifts are carried out to the trajectory of the blind ventilation drifts, which are carried out first to the flank workings, and then to the turning zone of the complex with coal transport through the split furnace.