SU1793066A1 - Coal pile endogenous fire preventing method - Google Patents

Description

UNION OF SOVIET

SOCIALIST

REPUBLIC

.... SU „„ 1793066 A1 (51) 5 E21 F5 / 00

STATE PATENT

DEPARTMENT OF THE USSR

ESPATENT USSR) (G

DESCRIPTION OF THE INVENTION

TO AUTHOR'S CERTIFICATE

(21 (22 (46 (71))

4850590/03

07/17/90

02/07/93. Bull. Number 5

Karaganda branch of the East Nau (Institute for Mining Safety Research (72) M4. Yugay, VA Aleksandrov. AS Zhigailo and Ya.

(56) No. 1

C. Vitebsk

1. Copyright certificate of the USSR 132247, cl. E 21 F 5/00, 1987.

? Interim guidance on the prevention and extinguishing of endogenous fires in sections. Chelyabinsk, 1982, p. 19-33.

A ··· </ · 2..

(54) METHOD FOR PREVENTING ENDOGENOUS FIRE IN COAL STACKING (57) Use: in the formation and storage of coal in stacks. SUMMARY OF THE INVENTION: Slopes formed from large lumps of coal are coated layer-by-layer with antipyrogen, the subsequent layer being treated in terms not exceeding the incubation period of spontaneous combustion of coal. 1 ill.

Promoting a la to a feed bo; This process belongs to the mountainous region and can be used (by lamination of spontaneously igniting coal sections).

A method for protecting a stack of sulSy ore from spontaneous combustion has been introduced, including the placement of injectors in a dump and processing the rock mass of reagents [1].

The disadvantage of this method is the material costs and nie |> prophylactic effectiveness) TCI.

The closest technical solution, selected as a prototype, is a method of preventing endogenous fires in loosened coal accumulations in sections, including injecting antipyrogen solutions into the bottom through perforated pipes, including gel-forming compounds [2].

The disadvantage of this method is the low efficiency of maintenance work and the large material and labor costs /

The purpose of the invention is to increase the efficiency and effectiveness of preventive work to prevent endogenous fires in loose coal clusters.

This goal is achieved by the fact that in the known method, which includes a layer-by-layer coating of the stack with antipyrogen in the process of its formation, the slopes of the stack are covered with the last, and each subsequent slope layer is covered with antipyrogen after a period of time not exceeding the minimum incubation period of coal spontaneous combustion in this stack. ·

1793066 A1

A comparative analysis of the proposed solution with the prototype shows that the claimed method differs from the known one in that the layer-by-layer processing of the slopes of the coal stack with antipyrogens is carried out in such a way that each subsequent slope layer is covered with antipyrogen after a period of time not exceeding a mini

1793066 4 small incubation period for spontaneous combustion of coal in this stack.

The drawing shows a coal stack intended for preventive treatment,

In coal stack 1, slopes 2 are covered with antipyrogens 3..

The proposed method for preventing endogenous fires in coal stacks is as follows. In the process of forming a stack, its slopes that are not sealed with special means - the main foci of the occurrence of endogenous fires, are processed every 15-20 days by a composition of flame retardants. The period of 15-20 days corresponds for the majority of brown coals to the minimum incubation period of spontaneous combustion of coal. During this period, processing of each subsequent coal layer with a thickness of 0.5-1.0 m should be carried out. If the stack formation process is less than the incubation period of spontaneous combustion of coal, then the need for a layer-by-layer coating with antipyrogen in the process of stack formation is eliminated. By means of spray nozzles, the surface of the slopes of the stack is processed.

The processing order is as follows. Upon reaching a layer thickness in the coal slope of 0.5-1.0 m (in the case of dangerous hot spots of coal self-heating in it), a vehicle with a flame retardant solution travels along the stack and under a pressure of 0.2-0.3 MPa using spray nozzles and pressure hoses water the surface of the slopes. The flow rate of the solution per 1 m ² of slope area should be at least 0.03-0.05 m ³ based on the required layer thickness.

The proposed method is simple to implement and allows you to increase the efficiency and economy of fire prevention work due to timely and focused processing is carried out only in those places where there is a process of active oxidation processes, and if the formation of the stack ends before the minimum incubation period of spontaneous combustion of coal, then generally layering layers excluded.

Claims (1)

Claim A method for preventing endogenous fires in coal stacks, including layer-by-layer coating of the stack with antipyrogen in the process of its formation, is characterized in that, in order to increase the cost-effectiveness and efficiency of preventive maintenance, the slopes of the stack are covered with antipyrogen, and each subsequent slope layer is covered with antipyrogen through a period of time not exceeding the minimum incubation period of coal spontaneous combustion in this stack.