RU2150584C1 - Ventilation bulkhead and method of its construction - Google Patents

Abstract

FIELD: mining industry. SUBSTANCE: device may be used in mining of mineral deposits by underground methods. The ventilation bulkhead includes wall located across mine working from interconnected building blocks located on heap of muck or stowage material. Each block is made in the form of thin-walled vessel open from top and filled with muck or stowage material. Side walls of thin-walled vessel are semiring and their external surface is rough. External sizes of lower part of thin-walled vessel are smaller than respective internal sizes of its upper part. Method of bulkhead construction includes installation of building blocks in rows and on one another. Construction of each new row is started for installation of adjacent to one another thin-walled vessels open from top. Extreme thin-walled vessels are cut to profile of working adjacent wall, and vessels are filled through their open part with muck or stowage material. Slot under working roof is filled with thin-walled vessel cut to profile of adjacent working without filling them with muck. EFFECT: reduced labor input in construction of ventilation bulkhead without impairing its air permeability. 2 cl, 3 dwg

Description

 The invention relates to the mining industry and can be used in the development of mineral deposits by underground mining.

 Known ventilation lintel, including interconnected binder (clay, cement) monolithic building blocks (wooden churaks, bricks, concrete, etc.) [1].

 This device is widespread in the mining industry, including, for example, in the potash mines of Uralkali, which is why it is taken as a prototype.

 A disadvantage of the known device is the large initial cost of the used monolithic blocks and binder materials, as well as the high complexity and, accordingly, the cost of lowering them into the mine and delivery to the construction site of the lintel.

 A known method of constructing a ventilation lintel, including making a cut in the walls and roof of a mine with a depth of 0.5-1 m to the width of the lintel, installing in this place monolithic building blocks in rows and on top of each other and connecting them together with a binder solution [1].

 The disadvantage of this method of constructing a ventilation lintel is the high complexity of the construction, caused by the need to make a cut to increase its air tightness and lift monolithic building blocks to each other.

 The aim of the invention is to reduce the cost and complexity of the construction of the ventilation lintels without impairing its air tightness due to the use of broken rock mass or filling material as the main building material of the ventilation lintel.

 This goal is achieved by the fact that in the ventilation lintel, which includes a wall of interconnected building blocks of building blocks, according to the invention, the building blocks are located on a pile of broken rock mass or filling material, and each of the blocks is made in the form of a thin-walled container open on top, filled broken rock mass or filling material, while the side walls of the thin-walled containers are made semi-rigid and rough, and the outer dimensions of the lower part are thin less tank wall corresponding internal dimensions of its upper part.

 This goal is also achieved by the fact that when erecting walls from building blocks in rows and on top of each other, the construction of each new row begins with the installation of thin-walled containers open on top of each other, while the extreme thin-walled containers are cut along the profile of the adjacent working wall, after which these containers through the open upper part they fill it with broken rock or filling material, and the gap under the roof of the mine is filled with thin-walled containers cut along the profile of the adjacent roof Work without filling them with rock mass or filling material.

 The combination of these new features in the claimed device and method leads to the emergence of a new property - the ability to use as the main material of the ventilation lintel broken rock mass or filling material, which are often available at the construction site of the lintel, without impairing its air tightness.

 The invention is illustrated in the drawing.

 In FIG. 1 and 2 show a ventilation lintel in a longitudinal and transverse section of a mine working, in FIG. 3 - device thin-walled open on top of the capacity of the building block. The ventilation lintel is a wall 1 located across the mine 2. The wall is folded of blocks 3 and is located on a pile 4 of broken rock mass or filling material. The use of a heap of broken rock mass reduces the consumption of building materials for the construction of the lintel, and also reduces the height of the wall of blocks 3, which allows without reducing the stability of the lintel to reduce its width and thereby the consumption of blocks and labor costs for construction.

 Each of the blocks consists of a thin-walled open top 5 container, made, for example, of polyethylene. In some cases, it is possible to use cardboard boxes as such containers, for example, from under a patched explosive.

 The side walls of the tank 5 are made semi-rigid, and their outer surfaces are rough. This allows the units to self-seal and reliably connect to each other as the ventilation bridge is erected without the use of binders.

 The thin-walled container 5 is made in such a way that the outer dimensions of its lower part 6 are smaller than the corresponding internal dimensions of the upper part 7. This allows you to insert the upper thin-walled container into the lower and thus seal the bulk material of the block.

 To reduce the volume of empty thin-walled containers during their transportation, they can be folded.

 The construction of the lintel begins with the dumping at the construction site of heap 1 from the broken rock mass (waste rock, substandard ore left on the soil of the bayonet) or filling material. The upper part of the heap is leveled and a wall is erected on it across the mine from thin-walled containers installed in rows filled with rock mass.

 Each new row begins with the installation of thin-walled containers close to each other, after which these containers are filled through the open top with broken rock mass or filling material.

 Thin-walled containers adjacent to uneven walls of the mine are cut along the profile of these walls.

 Since the lower parts of the thin-walled containers of the upper row are inserted into the upper parts of the lower, and the walls of the containers are made semi-rigid and rough, the walls of the containers are bursting with the material contained in them and due to this, the gaps are sealed between the blocks and their connection is reliable.

 The gap formed under the roof of the excavation is filled with thin-walled containers cut along the profile of the adjacent roof without filling them with rock mass. Moreover, due to the semi-rigid (elastic) execution of the walls of these containers, a satisfactory airtightness of the ventilation bridge is achieved.

 If it is necessary to give the jumper greater strength when filling thin-walled containers with rock mass, a small amount of water (brine) and a binder, such as cement, are added to the jumper.

 A door frame with a door for people to pass can be inserted into the wall of blocks 3.

 Thus, the main material of the proposed ventilation lintel is a rock mass (waste rock, substandard ore left on the soil bayonet) or filling material. This can significantly reduce the cost and complexity of delivering the necessary materials to the construction site of the ventilation lintel and thereby reduce its cost.

 The described method for constructing a ventilation lintel allows, in addition, to quickly and accurately fit the lintel into the complex shape of the mine by trimming the walls of thin-walled containers in accordance with the profile of the adjacent walls and the roof of the excavation, and thereby fill the entire section of the excavation with an airtight wall without making a cut.

 The construction of the proposed ventilation jumpers at the BKRU-1 mine showed high construction efficiency, as well as their good air-insulating properties.

Sources of information
1. Guide to mine ventilation. - Edited by A.I. Xenophon. - M. - GOSGORTEHIZDAT. - 1962 .-- S. 359.

Claims (2)

 1. A ventilation bridge, including a wall located across the mine working from interconnected building blocks, characterized in that the building blocks are located on a pile of broken rock mass or filling material, and each of the blocks is made in the form of a thin-walled open top tank filled with broken rock mass or filling material, while the side walls of the thin-walled container are made semi-rigid, and their outer surface is rough, and the outer dimensions of the lower part of the thin-walled capacities smaller than the corresponding internal dimensions of its upper part.  2. A method of constructing a ventilation lintel, including installing building blocks in rows and on top of each other, characterized in that the construction of each new row begins with the installation of thin-walled open top containers close to each other, while the extreme thin-walled containers are cut along the profile of the adjacent working wall, after why these tanks are filled through the open top with broken rock mass or filling material, and the gap under the roof of the mine is filled with thin-walled containers cut along the profile generating adjacent roof, without filling them rock mass or stowing material.

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