CN101519964A

CN101519964A - Novel coal mining method

Info

Publication number: CN101519964A
Application number: CN200810081972A
Authority: CN
Inventors: 温毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-01
Filing date: 2008-03-01
Publication date: 2009-09-02

Abstract

The invention discloses a novel coal mining method, which adopts non-ventilation coal mining. The key procedure of ventilation is saved, and underwell workers only need to be equipped with respirators. If ventilation of mines is saved, gas density is remarkably high (much larger than 16 percent), and oxygen is insufficient (much smaller than 12 percent), so the basic conditions of gas explosion cannot be satisfied, the higher the gas density is, the safer the underwell environment is, and higher gas density is more favorable for comprehensive utilization. As the underwell environment lies in an oxygen-poor and gas-rich state, the mechanization, automation, electrification and informatization of underwell jobs can be considered more; the mining of coal beds below kilometers can be considered; and the novel coal mining method breaks through the limitation of yield decision by ventilation and raises the yield.

Description

Novel coal mining method

Technical field:

The invention belongs to energy technology field

Background technology:

It mainly is underground job that China's coal-mine is produced, and often is subjected to the threat of disasters such as gas, water, fire, coal dust, top board.The colliery remains and has an accident and the maximum industry of the number of casualties, and heavy, special, major break down happens occasionally.In order fundamentally to reduce mine safety accidents, novel coal mining method is proposed.

Summary of the invention:

We know that coal mining mainly contains: links such as development, ventilation, coal mining, transportation, and novel coal mining method has saved this key link of ventilating, and does not promptly have ventilation coal mining.Saving this key link of ventilating, does less than enough fresh airs what if the personnel in the pit inhale? down-hole toxic gas and dust can not get watering down or what if get rid of? what if does gas density exceed standard? my imagination be underground work staffing breather just.If mine is stuffy, gas density is quite high (much larger than 16%) just, but but do not had oxygen (concentration is much smaller than 12%), and the primary condition of gas explosion just can not satisfy, and gas density is high more just safe more, and high more helping more of concentration fully utilizes.

The primary condition of attached gas explosion

(1) concentration of gas generally will reach 5%-16% in the air

(2) temperature of lighting gas explosion will reach 650-750 ℃, and can satisfy the sensitive period of gas explosion.

(3) oxygen concentration must be greater than 12% in the air.

More than three conditions, must satisfy simultaneously, gas just can be blasted.

We anatomize from three primary conditions of above gas explosion, and under ventilation state, oxygen concentration is generally all greater than 12% in the air; The concentration of gas in the air, ventilate smooth or situation that gas is gushed out under also reach 5%-16% easily; In the down-hole of situation complexity, it is also difficult to control spark.So occur the gas explosion incident unavoidably.

And under stuffy state, not having air source or air source very limited, gas density is high, the concentration of gas in the underground air be dropped between the 16%-5%, and is but very difficult, hardly may; Oxygen concentration to be reached 12%, also very difficult, more impossible.Promptly be that leaking appears in air compressor, also be difficult to form the large volume explosion gas that brisance and scope are also very limited, other disaster that causes is also very little.

One, the advantage of novel coal mining method:

1, coal bed gas (gas) exploitation can be carried out simultaneously with coal mining, has saved coal bed gas extraction equipment.Coal bed gas can directly extract utilization at the well head that adopts novel coal mining method.

2, subsurface environment is the rich Device in Gas state of anoxic, can more consideration underground work mechanizations, automation, electrification, informationization (these all are the roots that produces spark).

3, safer, the possibility of gas, coal-dust explosion does not almost have, more can breaking out of fire, and the down-hole facility need not anti-riot; Prevent coal oxidation simultaneously, stopped the dieseling of coal.

4, no gas has reduced greenhouse effect directly to airborne release; Effectively utilized simultaneously the energy.

5, help health, must not pneumoconiosis, be not subjected to the damage of toxic and harmful.

6, ventilation equipment, gas control facility and energy consumption thereof have been reduced.

But 7 development of new electric power transportation systems reduce cost of transportation.Also but development of new down-hole diesel locomotive is " fuel " with " compressed oxygen " promptly, is the automobile of " air " with " Device in Gas ".

8, the outstanding harm of gas is dwindled, and does not need gas pumping, can consider to exploit the following coal seam of km.

9, when the down-hole water leak accident taking place, the submersible escape of staff.

10, break through with wind fixed output quota restriction, improve output.

Two, the shortcoming of novel coal mining method

1, the underground work personnel must be equipped with breather, are not easy to operation

2, to build facility at well head and control the excessive interface of air and Device in Gas well

Three, other

The down-hole is delivered to by pipeline in the air source of underground work staffing breather.Compressed Gas in the carbon fiber bottle is obtained by appendix in the down-hole, and the carbon fiber bottle is by personal management and transporting, and appendix valve or standby carbon fiber bottle are set up in suitable position in the down-hole; The carbon fiber bottle can divide large, medium and small three class, and general medium carbon fiber bottle is carried by the staff, and little carbon fiber bottle is standby with oneself, and big carbon fiber bottle is placed on the plant equipment or the locality.The also available long tube of underground work personnel links to each other with the appendix valve and obtains breathe air continuously.The underground work personnel can be at any time the source channel of air switching easily.The down-hole also can be provided with ambulance.

We can also build down-hole rescue room, rest room, restaurant etc. in the down-hole.These facilities are communicated with by appendix and efferent duct takes a breath; Personnel etc. are then through going out to put in storage turnover.

Description of drawings

(nothing)

The specific embodiment:

Look for a discarded colliery, build the building of sealing, build gas pipeline simultaneously at its well head.The coal of output is exported by funnel, and the material personnel that transport (going out) wait by going out to put in storage turnover.

Claims

1, requires a kind of novel coal mining method, promptly do not have ventilation coal mining, the operation of underground work staffing breather.

2, require a kind of as require 1 described novel coal mining method, the air source of its underground work staffing breather by line transportation to the down-hole.