RU30162U1 - Complex of isolation and extinguishing of underground fires in hard-to-reach places of mines - Google Patents

Description

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. A complex of insulation and extinguishing underground fires in hard-to-reach places of mines The invention relates to mining and can be used to isolate emergency sites from existing mine workings. {There is a method of isolating an emergency section during underground mining; mining, including the construction of formwork in a mine working along the path of a fire and remotely supplying aggregate into the inner deck space through a well drilled from an adjacent formation or surface (Auth. Certificate USSR No. 1668693. K | I E 21F 5/00. 1991). The method of isolation and extinguishing of underground fires in hard-to-reach places also has such a disadvantage (RF Patent No. 213383L, CL E 21 F 5 / 00.1999). The disadvantage of the known methods is that. what is given,:,. the technical solution determines the need ..-: ..: early installation of formwork with a well or pipeline for filing filler, eliminates the explosion (discharge.) from the emergency section. I The purpose of the invention is to increase the efficiency of extinguishing underground fires in hard-to-reach places and safety during isolation due to phlegmatization the atmosphere of the emergency site and the remoteness of the technical processes of isolation and extinguishing a fire in an inaccessible place. : This is achieved by that. that for remote isolation of an emergency section (fire), which occurred, for example, as a result of an explosion of methane gas and coal dust (usually with the collapse of sections of the mine workings) cg) at the near approaches to the emergency section

equipment to ensure the processes of isolation and suppression of the fire, preferably in the upper part of the excavation a device is installed to produce inert foam or foamed hardening suspension and a fast-mounted formwork is formed on the lining (sides and roof), formed congruently by the mine in the form of an elastic sleeve frame with a dome made of airtight material and containing anchor for its fastening to the mine support, in the zone of an isolated space i / e.raitfo le e generator combination foam bath to which summed feed sleeve foaming solution and nitric-hladonovyh complex mounted on the side of the current output, wherein the gas mixture fed to the spray manifold generator through an elastic sleeve mounted congruently mining. Then produce the components of preventive mixtures.

The proposed set of distinctive features of the technical process allows to provide remote isolation of the fire section at the near approaches and suppression of the fire by means of the offensive movement of the foam plug on the fire, with the simultaneous inertization of the emergency site and its phlegmatization.

In fig. depicts a process flow diagram of a process.

The system for the implementation of the technical process contains the following positions according to the scheme: 1-quick-erected universal jumper, made in the form of a frame, fixed congruently to the mine support or side rocks using clamps or anchors and consisting of elastic sleeves; 2-dome made of airtight material; 3-sleeve supply of nitrogen-chladone mixture; 4-regulator of delivery of freon; 5-apparatus for supplying freon or grout; 6-set mechanization equipment and

safe isolation of COMBI; 7-fire sprinkler pipeline; 8-branch to the nitrogen evaporator IVA-1; 9-acting production; 10 ejector; 11-valve shutter; 12-hose feed blowing agent; 13-manometer; 14-hose feed blowing agent; 15-fixing anchor; 16-manifold supply of nitrogen-HFC gas mixture; 17-device for producing a combined inert foam; 18-manifold spraying foam blowing agent; 19-way apparatus for the distribution and formation of combined foam (foam mesh).

The technical process according to the scheme is carried out in a sedating manner.

In the event of a fire in a mine working, in a methane explosion, for the safety of operations when isolating a fire with an explosion-proof jumper, a quick-assembled jumper 1 is installed on the safe approaches to the fire with its fastening to the mine support by fixing anchors 15 (clamps, brackets, etc.) with placement devices 17 for producing combined foam on the side of the insulated part of the mine with its connection with sleeve 14 to the fire-irrigation pipe for supplying the foam-forming mixture, and with sleeve 3 to the collector zhektoru 10 issuing nitrogen hpadonovoy mixture from underground complex mechanized equipment and safe isolation COMBI (RosNIIGD design).

The first method of suppressing the fire source of an emergency section is inertization by feeding nitrogen-coolon mixture with an increased pressure up to 1.6 MPa through the ejector 10, while under pressure, the quick-release universal jumper 1 and 1 occupies a clear placement congruently to the output with the placement of an airtight dome 2 along its cross section. Then the pressure decreases and the generator 17 enters into operation by turning on

Foaming agent, 5 The process of generating a combined zeta-chladone pei in a collapsed mining operation creates about (5-removable umbrella filling the phlegmatizing volume of foam. The advantage of the combined gas composition (chladon-nitrogen) for volumetric quenching is well known. Studies on the effect of 114B2 methane hydrogen on the hydrogen region - air mixtures established by diluting the air with nitrogen for every 10% of the consumption of HFC decreases by about 2 times. Moreover, with 30% replacement of air with nitrogen, the phlegmatizing concentration 11462 refrigerant is 0.3%.

The advantage of using a mixture of chladone with nitrogen over pure nitrogen is that the mechanism of phlegmatization of explosions and flame inhibition is based on chemical inhibition of the combustion reaction, and not simply from the mechanical replacement of atmospheric oxygen with nitrogen. The use of a mixture of nitrogen with chladone can significantly reduce the consumption of both phlegmatizers, without compromising efficiency.

The proposed complex of extinguishing underground fires will increase safety and reduce material and labor costs for isolating and suppressing fires in hard-to-reach places in methane-rich mines and in conditions of explosion hazard.

 R-V-Dikova

mff4 S.A. Balloons

V.V. Myachin

I. Chuprikov

Claims (1)

A complex for isolating and extinguishing underground fires in hard-to-reach places of mines, containing a platform with a reservoir of liquid nitrogen, an inert foam device, a quick-build sailing bridge, foam supply pipelines, characterized in that the area of the emergency mine section is isolated by a quick-build formwork, formed in the form frames from an elastic sleeve with a dome made of airtight material and containing anchors for its fastening to the mine support, in an isolated area space, with a combined foam generator installed, to which the supply lines of the foaming agent solution and the nitrogen-chladone gas mixture from the underground nitrogen-chladone complex installed on the side of the existing production are connected, while the gas mixture enters the generator spray manifold through an elastic sleeve installed congruently mining.