CN1301910A

CN1301910A - Funnel type coal mining method

Info

Publication number: CN1301910A
Application number: CN 99122671
Authority: CN
Inventors: 王世忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-24
Filing date: 1999-12-24
Publication date: 2001-07-04
Anticipated expiration: 2019-12-24
Also published as: CN1157528C

Abstract

Unlike the traditional horizontal and inclined slice coal mining method, the funnel type method for extra-thick coal has short and inclined demolition stope and sthree breaking tunnels, two upper ones and one lower middle one, in equal distances constitute a delta shaped demolition funnel and the burst coal are transported out from the lower middle air intake breaking tunnel. The funnel type method remits the coal miner from strenuous physical labor, raise working efficiency and ensure safety.

Description

Funnel type coal mining method

The present invention relates to a kind of new coal-mining method and ventilation means of transportation that underground super high seam mine is mined with blasting method.

Past and present, all super high seam mines, when mining with blasting method, all common prolonging with horizontal slice or the traditional coal-mining method of inclined cuting layering.These old mining way will inevitably run into that top plate supporting is difficult, haulage device moves and moves frequent, workman and hovel with spade that the big efficient of coal labour intensity is low, the mine timber consumption is big from one place to another, also have drawbacks such as hidden danger.

The objective of the invention is in order to remove the current above-mentioned various drawbacks that run into traditional coal-mining method of prolonging, for the super high seam mine provide a kind of produced quantity height, digging than low, mine timber can all reclaim multiplexing, the back production work efficiency can improve more than ten times, " funnel type coal mining method " that can have safety to hold again.

Above-mentioned purpose of the present invention is achieved in that and makes full use of special thick this natural occurrence condition of subterranean coal, the broken back of foundation beans trickles naturally, the angle of resting in peace of landing, with the minimum burden that uses general explosive in two-way shot, the crushing effect of realizing ideal.So this funnel type coal mining method is that the original level and the bursting work reduction of area of cutting sth. askew is short, and become two-way 60 degree tiltedly upright, every layer of definite mining height is no more than 10 meters, each explosion back production district is by two of tops, one of below, the explosive funnel of a routine isosceles triangle is formed in three broken lanes of spacing equalization, also can be made up of two broken lanes, below, top.But between the distance preferably be no more than 6 meters, its back production direction of propulsion is a retrusive.Roadway arrangement about this coal-mining method: high to straggly of two levels of seat earth digging from roof is 5 meters ort lane, as among the figure () 1 and 2.The same side in these two ort lanes by broken lane of 6 meters diggings, the staggered every interval of levels, as 1-1,1-2,2-1,2-2,2-3 among the figure (), makes a lane configuration example isosceles triangle funnel of two lanes, upper strata and lower floor along bearing.Its tunnel length can be determined according to geological conditions and transportation range.About draft type: with lower floor 1-1 lane as inlet air the transportation broken lane of holding concurrently, the 2-1 on upper strata and 2-2 hold concurrently broken lane before stoping operation as return air, connect at the respectively relative drilling and blasting in the end place in these three broken lanes, while the inside at 1-1 entrance to a lane in lower floor ort lane is installed and is stopped air door M ₁, also the outside at 2-1 entrance to a lane is installed and is stopped air door M in ort lane, upper strata ₂, also at the outside handicapping wind blocking door M of pedestrian's connection roadway mouth 3 ₃, shown in figure ().Like this under the effect of negative pressure, distinguished and admirablely enter the broken lane 1-1 of transportation by ort lane 1 and get back to upper strata 2-1 and ort lane, upper strata 2 is got back in the broken lane of 2-2, at M through the back production hopper zone ₂And M ₃Under the stopping of air door, make distinguished and admirable descendingly, get back to M by connection roadway 3 ₁The inboard of air door forms ventilation circuit.Transportation about coal: in lower floor ort lane 1, install transport capacity bigger scraper plate machine or conveyor.In the broken lane 1-1 of lower floor, small-sized haulage device flexibly is installed.About the back production program: determine minimum burden and determine the setback distance (being generally 2 meters) of each explosion circulation according to the f value of coal petrography.At the small-sized transportation tail in the end place in 1-1 lane, make progress into 2 meters dark shot holes of radial brill so earlier, more respectively in the same position in 2-1 and 2-2 lane, to around become radial and also bore 2 meters dark shot holes shown in scheming (two) 1.Detonate with the shot hole that electric cap makes progress the 1-1 lane earlier with the safety type explosive then, after machine to be transported transports broken coal, radial shot hole in detonate successively again 2-1 and the 2-2 lane.Outwards transport in the process of coal at transporter like this, the supporting mine timber that these three tunnel slumps can be got off all reclaims.After treating whole fortune of broken coal of hopper zone, just can shorten a joint tail and carry out next back production circulation.

This " funnel type coal mining method " compared with the horizontal slice of present widespread usage or the coal-mining method of inclined cuting layering, having the back production work efficiency can improve more than ten times, the used timber of supporting can reclaim fully, non-support, no haulage device, operating personnel need not enter all operations in the tunnel of goaf in the work plane, this does not weigh and can guarantee personal safety, also reduced coal miner, haul, supporting, hovel coal from one place to another, have moved many operations such as establishing transporter.

Can be about the ventilation transportation of funnel type coal mining method and stoping operation program: in figure () by accompanying drawing to as directed: 1, be lower floor ort lane; 2, be ort lane, upper strata; 3, be the pedestrian and the return air connection roadway of levels ort; 1-1 is the double broken lane of inlet air transportation of lower floor's ort; 2-1,2-2, be the broken lane of upper strata ort return air: by 1-1,2-1 and 2-2, configuration example isosceles triangle funnel is adopted and is settled in an area; M ₁The air door that stops that is provided in a side of the inside, lower floor ort 1-1 entrance to a lane; M ₂And M ₃Be to be located at respectively outside ort 2-1 entrance to a lane, upper strata, and get in touch with the air door that stops of 3 the insides, entrance to a lane.About transporting: in lower floor ort lane 1, install large-scale scraper plate machine or belt conveyer.In the broken lane 1-1 of the lower floor inlet air vertical, install small-sized light transporter flexibly with lower floor ort lane.Can contrast figure (two) about the stoping operation program illustrates: (1) be the 1-1 lane upwards and 2-1,2-2 lane to the section of the radial shot hole of Drilling all around; (2) be section after the shot hole explosion that earlier the 1-1 lane is made progress; (1) be for the second time explosion 2-1 lane to around section after radiating shot hole; (4) be for the third time explosion 2-2 lane to around radiate the section of shot hole, formed the coal breakage funnel

Claims

1, the present invention relates to underground super high seam, a kind of " funnel type coal mining method " with the blasting method coal mining, the coal mining bursting work face that it is characterized in that it is formed routine isosceles triangle explosive funnel by two of tops, three impartial broken tunnels of distance, middle below, it also comprises one of top, the composition mode in two broken lanes, below.

2, " funnel type coal mining method " as claimed in claim 1, its feature is that also its ventilation is in lower floor ort lane, the inside at broken entrance to a lane, middle below is installed and is stopped air door together, also in ort lane, upper strata, the outside at two broken entrances to a lane, top, the position of having crossed levels ort connection roadway is also established and is stopped air door together, guarantee that broken lane, the distinguished and admirable therefrom below of negative pressure enters, get back to two broken lanes, top through funnel explosion face, descending by the levels connection roadway, get back to the inside that lower floor ort lane stops air door.

3, " funnel type coal mining method " as claimed in claim 1, its feature is that also its Coal Transport is to install small-sized transporter flexibly in the broken lane of inlet air below in routine isosceles triangle funnel, in the lower floor ort lane vertical with this broken lane, the transporter that the ability of installing is bigger.