CN105756706B - The airtight execution method of underground coal mine temporary airtight wall - Google Patents

The airtight execution method of underground coal mine temporary airtight wall Download PDF

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Publication number
CN105756706B
CN105756706B CN201610314634.3A CN201610314634A CN105756706B CN 105756706 B CN105756706 B CN 105756706B CN 201610314634 A CN201610314634 A CN 201610314634A CN 105756706 B CN105756706 B CN 105756706B
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CN
China
Prior art keywords
brick
fragment
tunnel
layer
block
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CN201610314634.3A
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Chinese (zh)
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CN105756706A (en
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刘晓
张帆
马耕
王良金
陶云奇
韩颖
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河南理工大学
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/103Dams, e.g. for ventilation

Abstract

The invention discloses a kind of underground coal mine temporary airtight wall, including being at least assembled by three layers and three brick combinations arranged, each fragment of brick monnolithic case is in rectangular shape, fragment of brick is made up of light-high-strength expanded material, the organic anchor mesh sheet being criss-cross arranged is equipped with each fragment of brick, it is integrated by the horizontal brace rod series connection being located in the horizontal direction in fragment of brick between every layer of fragment of brick, is integrated between the fragment of brick of each column by the vertical connecting rod series connection being vertically located in fragment of brick;Each fragment of brick outer wrap has the air duct fabric being bonded with fragment of brick surface.Invention additionally discloses the airtight execution method of underground coal mine temporary airtight wall.The present invention is simple and easy to operate, being capable of large area, short time closed roadway.Quality time and safety guarantee are provided for safety of coal mines exploitation.

Description

The airtight execution method of underground coal mine temporary airtight wall

Technical field

The invention belongs to safety of coal mines technical field of construction, and in particular to a kind of the closed of underground coal mine temporary airtight wall is applied Work method.

Background technology

China's highly gassy mine accounts for the 50% of colliery sum, and with the increase of mining depth, mining operations area is by coal Dirt, flammable explosive gas(Methane), roof and floor, water, the disaster such as fire threat, underground coal mine accident has a strong impact on coal industry Safe efficient development and underground work personnel life security.China's coal-mine spontaneous combustion is very serious, in coalmine rescue During, if closed not in time, shorten the time of the control intensity of a fire, even more serious disaster can be triggered again.In order to prevent Spontaneous combustion of coal seam, gas explosion, underground coal mine usually need to build explosion-proof fire dam isolation burning things which may cause a fire disaster, primer sector, gas enrichment region, had Evil gas, to prevent the further expansion of disaster.The fire dam of underground coal mine is divided into two kinds:1. for interim based on keeping out the wind It is closed.Fire dam can sternly not cause to leak out, and cause the deficiency in draught for needing wind point, have a strong impact on safety in production;2. for tunnel with Mined out section it is permanent closed.Fire dam can sternly not cause the toxic and harmful gas such as gas in goaf to be leaked to tunnel, and then Trigger coal seam, the gas spontaneous combustion in goaf, serious threat the health of staff.Therefore, fire dam is built easily certainly Combustion area, methane accumulation band, pernicious gas isolate being necessary with workspace.

At present, underground coal mine temporary airtight wall mainly applies brick and wood, both materials in operation, construction it is laborious again It is time-consuming, and security reliability is poor, it is impossible to fast and effeciently contain the sprawling of burst accident.

The content of the invention

The present invention is in order to solve weak point of the prior art, there is provided it is a kind of it is in light weight, volume is big, it is easy to operate and Can be with large area, the airtight execution method of multi-faceted, closed roadway with multi-angle underground coal mine temporary airtight wall.

In order to solve the above technical problems, the present invention adopts the following technical scheme that:Underground coal mine temporary airtight wall, including at least It is assembled by three layers and three brick combinations arranged, each fragment of brick monnolithic case is in rectangular shape, and fragment of brick is by light-high-strength Expanded material is made, and is equipped with the organic anchor mesh sheet being criss-cross arranged in each fragment of brick, by along water between every layer of fragment of brick Square to be located in fragment of brick horizontal brace rod series connection be integrated, by being vertically located in brick between the fragment of brick of each column Vertical connecting rod series connection in block is integrated;Each fragment of brick outer wrap has the air duct fabric being bonded with fragment of brick surface.

Each fragment of brick is equipped with handle, and the end that handle is extend into fragment of brick is connected with organic anchor mesh sheet.

The left surface and right flank of each fragment of brick are vertically respectively equipped with vertical detent and vertical location fin The equal semicircular in shape in section of bar, vertical detent and vertical convex rib, the radius of vertical convex rib are less than vertically The distance of the distance between center line fragment of brick leading flank of the radius of detent, vertical convex rib and vertical detent is equal.

The downside of each fragment of brick and upper side are respectively equipped with horizontal location groove and horizontal location along left and right horizontal direction The equal semicircular in shape in section of fin bar, horizontal location groove and horizontal location fin bar, the radius of horizontal location fin bar are less than The distance phase of the distance between center line fragment of brick leading flank of the radius of horizontal location groove, horizontal location fin bar and horizontal location groove Deng.

The airtight execution method of underground coal mine temporary airtight wall, comprises the following steps:

(1)In the mould of ground assembled tile formation of lots:Joint portion between each template of mould is carried out with screw Assembling, anchoring, die top are open;Screw is easy to disassemble and recycles, and the use of screw will not make to mould Into destruction, the mold use time limit can be extended;

(2)Air duct fabric is close to mold wall laying, unnecessary air duct fabric is reserved in die top;

(3)Lubricating oil is equably applied to the surface of air duct fabric, light-high-strength expanded material is then loaded into filling gun It is interior, turn into compound after light-high-strength expanded material is well mixed, injected a mixture into filling gun to equipped with air duct fabric Mould in;During injection, weaving webbed organic anchor mesh sheet level and being put into vertically in compound, to increase The caking property and tensile strength of fragment of brick after strong shaping;Before compound will fill mould, handle is put according to predetermined position Enter in compound, and be connected handle is inner with organic anchor mesh sheet, so ensure the fixing of handle and convenient carry fragment of brick;When After compound fills mould, compound is packaged with air duct fabric reserved outside mould, and with plank on air duct fabric and again Thing is compacted;

(4)After material expansion molding to be mixed is the described brick structure for reaching requirement, screw is twisted with rig Under, remove mould and fragment of brick is stripped;

(5)Repeat step(1)、(2)、(3)Operation, produce several fragments of brick;

(6)Some connecting rods and the fragment of brick being fabricated to, which are transported to, needs closed roadway position under mine, be included in Discarded tunnel, the tunnel for needing wind easily occur in the tunnel of spontaneous combustion, and then determine fire dam builds position by laying bricks or stones;

(7)Before closed roadway, 3 ~ 5 fragments of brick are tiled one layer, the vertical convex rib of one of fragment of brick sidepiece is stretched Entering and be assembled in the vertical detent of the fragment of brick sidepiece adjacent with the fragment of brick, the handle on each fragment of brick is located at the same side, Horizontal location groove is respectively positioned on each fragment of brick upper surface, and horizontal location fin bar is respectively positioned on each fragment of brick lower surface;Then by water Flushconnection bar is inserted into this 3 ~ 5 fragments of brick in the horizontal direction, and 3 ~ 5 fragments of brick form the block of one layer of entirety;According to the step If the equal block of dried layer horizontal length is assembled again;

(8)During closed roadway, according to roadway shape and size, each layer of the block piled up is assembled, cut, is cut The block of the assembling of first time, well cutting is placed into lane by the block after cutting to be adapted to the shape and size in tunnel using handle Road bottom, then the block of the second layer is placed on first layer block, the horizontal location fin bar of second layer lower surface stretches into It is assembled in the horizontal location groove of first layer upper surface, the handle on block is unified towards tunnel axial direction;According to this Mode of operation piles up block successively forms fire dam in wanted closed tunnel region, finally by the vertical side in vertical connecting rod edge To plugging successively in about every layer corresponding fragment of brick, the block of all numbers of plies is set all to be connected as an entirety, fire dam is full of Whole tunnel section, to reach the requirement in sealing tunnel.

Step(7)With(8)Yellow mud is smeared between the fragment of brick of middle same layer to be bonded as one, and makes do not have gap between fragment of brick, Smear using the woven bag for filling yellow mud and outside woven bag in the space of one fragment of brick of insufficient space between wall and fire dam Yellow mud closed roadway.

Step(6)Determine that fire dam builds position by laying bricks or stones in the larger tunnel of blast in if, using vertically in lane Road wall suspension anchor net, fragment of brick is put against anchor net windward side.

Light-high-strength expanded material is polyurethane, Roc is stopped or malisan material.

Using above-mentioned technical proposal, the effect of each part in the present invention is as follows:

(1)The mould of fragment of brick is molded, material is iron plate, and mould is to split first, is assembled before being molded fragment of brick, Fixed brick shapes can be played a part of;(2)Air duct fabric, lay to the surface of mould inner wall, playing prevents filling material and mould Has the effect of bonding;(3)Lubricating oil, the surface of air duct fabric is applied to, air duct fabric and filling material adhesion are prevented when the demoulding; (4), handle, fixed before fragment of brick is molded through mould, help to be carried when using fragment of brick;(5)Screw, to mould Tool coupling part is reinforced;(6)Organic anchor mesh sheet, in advance braiding reticulate, are placed during fragment of brick is molded, play increasing Add the effect of the tensile strength, stability of fragment of brick;(7)Polyurethane A expects and B material, will after the completion of the mould installion of shaping fragment of brick Polyurethane A expects and B material are filled in mould, is the material for being molded fire dam;(8)Filling gun, by polyurethane A material and B material injections Into the mould of shaping fragment of brick;(9)Horizontal brace rod and vertical connecting rod, are interspersed in fragment of brick, can be worn with multiple angles, orientation Insert, play a part of large area isolation tunnel;(10), can direct light-high-strength expanded material in each fragment of brick forming process Shaping;When desired strength is higher, the organic anchor mesh sheet being criss-cross arranged can be equipped with each fragment of brick.(11)Adjacent bricks Assembled between block using vertical detent and vertical convex rib, horizontal location groove and horizontal location fin bar, It so can not only make fire dam surfacing, keep good perpendicularity, and the sealing function played, wind is avoided by brick Gap between block passes through.

Beneficial effects of the present invention are:

(1)This kind of fragment of brick is laid in tunnel, with it is traditional lay bricks, pile up wood compared with, there is the advantage of light weight, can be more Reduce labour, save the activity duration to big degree, goaf and mining area can be completely cut off when accident occurs in time, effectively containment The sprawling of accident, harm caused by mitigation accident;

(2)For laying bricks, piling up this sealing method of wood, fragment of brick, wood small volume, and weight is big, operates Lose time and labour, using the distribution method in text not only can closed roadway in large area, and it is easy to operate, save When, it is laborsaving;

(3)The interim fragment of brick of coal mine down-hole tunnel and sealing method are simple to operate, practical, especially for large area, greatly The tunnel of depth, can in short-term, effectively closed roadway;

(4)When for needing closed roadway in short-term, coal mine down-hole tunnel temporary airtight method can with the shortest time Closed roadway;

(5)Coal mine down-hole tunnel temporary airtight material is compared with fragment of brick, wood, it is possible to reduce fragment of brick, the expense of wood, and And may be reused, save the materials expense of closed roadway.

The present invention can effectively and quickly completely cut off goaf and exploitation for large area, big depth ground temporary airtight tunnel Area, and enclosed material light weight, sealing method is easy to operate, can significantly save time, labour, and effectively isolation is adopted Dead zone and mining area, the air quantity supply of abundance is provided for the tunnel of air requirement.Especially when unexpected accident occurs, enclosed material Gently, the big advantage of area can be embodied farthest, and then be controlled the dangerous circumstances in time, effectively contained the sprawling of accident, subtracted The harm and loss that light accident is brought to coal mining.

The present invention is simple and easy to operate, being capable of large area, short time closed roadway.The quality time is provided for safety of coal mines exploitation And safety guarantee.

Brief description of the drawings

Fig. 1 is the structural representation of the present invention.

Embodiment

As shown in figure 1, the underground coal mine temporary airtight wall of the present invention, including at least filled by three layers and three brick combinations arranged With into each monnolithic case of fragment of brick 1 is in rectangular shape, and fragment of brick 1 is made up of fragment of brick of light-high-strength expanded material, each The organic anchor mesh sheet being criss-cross arranged is equipped with fragment of brick 1(Do not illustrate and in figure), by along water between every layer of fragment of brick 1 Square to be located in fragment of brick 1 horizontal brace rod 2 series connection be integrated, by vertically wearing between the fragment of brick 1 of each column The series connection of vertical connecting rod 3 in fragment of brick 1 is integrated;Each outer wrap of fragment of brick 1 has the air duct fabric being bonded with the surface of fragment of brick 1 (Do not illustrate and in figure).

Each fragment of brick 1 is equipped with handle 4, and the end that handle 4 is extend into fragment of brick 1 is connected with organic anchor mesh sheet.

The left surface and right flank of each fragment of brick 1 are vertically respectively equipped with vertical detent 5 and vertical convex The equal semicircular in shape in section of rib 6, vertical detent 5 and vertical convex rib 6, the radius of vertical convex rib 6 are small In the radius of vertical detent 5, the leading flank of distance between center line fragment of brick 1 of vertical convex rib 6 and vertical detent 5 Apart from equal.

The downside of each fragment of brick 1 and upper side is respectively equipped with horizontal location groove 7 along left and right horizontal direction and level is determined The equal semicircular in shape in section of position fin bar 8, horizontal location groove 7 and horizontal location fin bar 8, the half of horizontal location fin bar 8 Footpath is less than the front side of distance between center line fragment of brick 1 of the radius of horizontal location groove 7, horizontal location fin bar 8 and horizontal location groove 7 The distance in face is equal.

The airtight execution method of underground coal mine temporary airtight wall, comprises the following steps:

(1)The mould that assembling fragment of brick 1 is molded on ground:Joint portion between each template of mould is carried out with screw Assembling, anchoring, die top are open;Screw is easy to disassemble and recycles, and the use of screw will not make to mould Into destruction, the mold use time limit can be extended;

(2)Air duct fabric is close to mold wall laying, unnecessary air duct fabric is reserved in die top;

(3)Lubricating oil is equably applied to the surface of air duct fabric, light-high-strength expanded material is then loaded into filling gun It is interior, turn into compound after light-high-strength expanded material is well mixed, injected a mixture into filling gun to equipped with air duct fabric Mould in;During injection, weaving webbed organic anchor mesh sheet level and being put into vertically in compound, to increase The caking property and tensile strength of fragment of brick 1 after strong shaping;Before compound will fill mould, by handle 4 according to predetermined position It is put into compound, and is connected handle 4 is inner with organic anchor mesh sheet, so ensures the fixing of handle 4 and convenient carry brick Block 1;After compound fills mould, compound is packaged with air duct fabric reserved outside mould, and with wood on air duct fabric Plate and weight compacting;

(4)After material expansion molding to be mixed is the described structure of fragment of brick 1 for reaching requirement, screw is twisted with rig Under, remove mould and fragment of brick 1 is stripped;

(5)Repeat step(1)、(2)、(3)Operation, produce several fragments of brick 1;

(6)Some connecting rods and the fragment of brick 1 being fabricated to, which are transported to, needs closed roadway position under mine, be included in Discarded tunnel, the tunnel for needing wind easily occur in the tunnel of spontaneous combustion, and then determine fire dam builds position by laying bricks or stones;

(7)Before closed roadway, 3 ~ 5 fragments of brick 1 are tiled one layer, the vertical convex rib 6 of one of sidepiece of fragment of brick 1 Stretch into and be assembled in the vertical detent 5 of the sidepiece of fragment of brick 1 adjacent with the fragment of brick 1, the handle 41 on each fragment of brick 1 is located at The same side, horizontal location groove 7 are respectively positioned on each upper surface of fragment of brick 1, and horizontal location fin bar 8 is respectively positioned on each following table of fragment of brick 1 Face;Then horizontal brace rod 2 is inserted into this 3 ~ 5 fragments of brick 1 in the horizontal direction, 3 ~ 5 fragments of brick 1 form the block of one layer of entirety Body;If the equal block of dried layer horizontal length is assembled again according to the step;

(8)During closed roadway, according to roadway shape and size, each layer of the block piled up is assembled, cut, is cut The block of the assembling of first time, well cutting is placed into lane by the block after cutting to be adapted to the shape and size in tunnel using handle 4 Road bottom, then the block of the second layer is placed on first layer block, the horizontal location fin bar 8 of second layer lower surface stretches into It is assembled in the horizontal location groove 7 of first layer upper surface, the handle 4 on block is unified towards tunnel axial direction;According to this Kind of mode of operation piles up block successively forms fire dam in wanted closed tunnel region, finally by vertical connecting rod 3 along perpendicular Nogata makes the block of all numbers of plies all be connected as an entirety, fire dam to plugging successively in about every layer corresponding fragment of brick 1 Full of whole tunnel section, to reach the requirement in sealing tunnel.

Step(7)With(8)Yellow mud is smeared between the fragment of brick 1 of middle same layer to be bonded as one, and makes not stitch between fragment of brick 1 Gap, the space of one fragment of brick 1 of insufficient space between wall and fire dam is using the woven bag for filling yellow mud and outside woven bag Smear yellow mud closed roadway.

Step(6)Determine that fire dam builds position by laying bricks or stones in the larger tunnel of blast in if, using vertically in lane Road wall suspension anchor net, fragment of brick 1 is put against anchor net windward side.

Light-high-strength expanded material is polyurethane, Roc is stopped or malisan material.

Above example is only to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair It is bright to be described in detail, it will be understood by those within the art that:Still the present invention can be modified or be waited With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention Among sharp claimed range.

Claims (4)

1. the airtight execution method of underground coal mine temporary airtight wall, it is characterised in that:
Described underground coal mine temporary airtight wall, including be at least assembled by three layers and three brick combinations arranged, each fragment of brick Monnolithic case is in rectangular shape, and fragment of brick is made up of light-high-strength expanded material, and crisscross cloth is equipped with each fragment of brick The organic anchor mesh sheet put, by the horizontal brace rod series connection being located in the horizontal direction in fragment of brick it is one between every layer of fragment of brick Body, it is integrated by the vertical connecting rod series connection being vertically located in fragment of brick between the fragment of brick of each column;Outside each fragment of brick Portion is enclosed with the air duct fabric being bonded with fragment of brick surface;
Each fragment of brick is equipped with handle, and the end that handle is extend into fragment of brick is connected with organic anchor mesh sheet;
The left surface and right flank of each fragment of brick are vertically respectively equipped with vertical detent and vertical convex rib, erect To the equal semicircular in shape in section of detent and vertical convex rib, the radius of vertical convex rib is recessed less than vertically positioning The distance of the distance between center line fragment of brick leading flank of the radius of groove, vertical convex rib and vertical detent is equal;
The downside of each fragment of brick and upper side are respectively equipped with horizontal location groove and horizontal location fin along left and right horizontal direction The equal semicircular in shape in section of bar, horizontal location groove and horizontal location fin bar, the radius of horizontal location fin bar are less than level The distance of the distance between center line fragment of brick leading flank of the radius of detent, horizontal location fin bar and horizontal location groove is equal;
Described airtight execution method comprises the following steps:
(1)In the mould of ground assembled tile formation of lots:Joint portion between each template of mould assembled with screw, Anchoring, die top are open;Screw is easy to disassemble and recycles, and the use of screw will not cause brokenly to mould It is bad, the mold use time limit can be extended;
(2)Air duct fabric is close to mold wall laying, unnecessary air duct fabric is reserved in die top;
(3)Lubricating oil is equably applied to the surface of air duct fabric, then light-high-strength expanded material is loaded in filling gun, treated Turn into compound after light-high-strength expanded material is well mixed, injected a mixture into filling gun to the mould equipped with air duct fabric In;During injection, weaving webbed organic anchor mesh sheet level and being put into vertically in compound, to strengthen shaping The caking property and tensile strength of fragment of brick afterwards;Before compound will fill mould, handle is put into mixing according to predetermined position In material, and it is connected handle is inner with organic anchor mesh sheet, so ensures the fixing of handle and convenient carry fragment of brick;Work as compound After filling mould, compound is packaged with air duct fabric reserved outside mould, and is compacted on air duct fabric with plank and weight;
(4)After material expansion molding to be mixed is the described brick structure for reaching requirement, screw is backed out with rig, torn open Except mould is stripped to fragment of brick;
(5)Repeat step(1)、(2)、(3)、(4)Operation, produce several fragments of brick;
(6)Some connecting rods and the fragment of brick being fabricated to, which are transported to, needs closed roadway position under mine, be included in discarded Tunnel, need the tunnel of wind or easily occur in the tunnel of spontaneous combustion, then determine that fire dam builds position by laying bricks or stones;
(7)Before closed roadway, 3 ~ 5 fragments of brick are tiled one layer, the vertical convex rib of one of fragment of brick sidepiece stretches into simultaneously It is assembled in the vertical detent of the fragment of brick sidepiece adjacent with the fragment of brick, the handle on each fragment of brick is located at the same side, horizontal Detent is respectively positioned on each fragment of brick upper surface, and horizontal location fin bar is respectively positioned on each fragment of brick lower surface;Then by level even Extension bar is inserted into this 3 ~ 5 fragments of brick in the horizontal direction, and 3 ~ 5 fragments of brick form the block of one layer of entirety;According to step group again If fill the equal block of dried layer horizontal length;
(8)During closed roadway, according to roadway shape and size, each layer of the block piled up is assembled, cut, after cutting Block be adapted to tunnel shape and size, the block of the assembling of first time, well cutting is placed into tunnel bottom using handle Portion, then the block of the second layer is placed on first layer block, the horizontal location fin bar of second layer lower surface stretches into assembling Into the horizontal location groove of first layer upper surface, the handle on block is unified towards tunnel axial direction;According to this operation Mode piles up block successively forms fire dam in wanted closed tunnel region, finally by vertical connecting rod vertically according to Secondary plug in fragment of brick, makes the block of all numbers of plies all be connected as an entirety corresponding to about every layer, fire dam is full of whole Tunnel section, to reach the requirement in sealing tunnel.
2. the airtight execution method of underground coal mine temporary airtight wall according to claim 1, it is characterised in that:Step(7) With(8)Smear yellow mud between the fragment of brick of middle same layer to be bonded as one, make there is no gap between fragment of brick, wall and fire dam it Between one fragment of brick of insufficient space space using dress yellow mud woven bag and outside woven bag smear yellow mud closed roadway.
3. the airtight execution method of underground coal mine temporary airtight wall according to claim 1, it is characterised in that:Step(6) Determine that fire dam builds position by laying bricks or stones in the larger tunnel of blast in if, using vertically anchor net is hung in wall, tightly Fragment of brick is put by anchor net windward side.
4. the airtight execution method of underground coal mine temporary airtight wall according to claim 1, it is characterised in that:High-strength light Degree expanded material is polyurethane, Roc is stopped or malisan material.
CN201610314634.3A 2016-05-13 2016-05-13 The airtight execution method of underground coal mine temporary airtight wall CN105756706B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107255028A (en) * 2017-08-01 2017-10-17 宿州市金鼎安全技术股份有限公司 A kind of method that abandoned mine underground separation utilizes gas
CN107448234A (en) * 2017-08-30 2017-12-08 陕西煤业化工技术研究院有限责任公司 A kind of colliery pours closed wall construction method
CN108222974A (en) * 2017-12-29 2018-06-29 山东国大黄金股份有限公司 A kind of mine route plugging structure and its application method

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4102138A (en) * 1974-06-12 1978-07-25 Bergwerksverband Gmbh Method for closing off a mine gallery especially for use to prevent spreading of underground explosions
CN101571046A (en) * 2009-06-02 2009-11-04 徐波 Prefabricated member of collapse preventing structure in construction process of subway, mine tunnel and highway tunnel and construction method
CN104564145A (en) * 2014-12-19 2015-04-29 北京瑞诺安科新能源技术有限公司 Coal mine underground sealed wall and constructing method thereof
CN205013035U (en) * 2015-08-13 2016-02-03 河南焦煤能源有限公司中马村矿 Combine and to adopt on working face corner windbreak and build and establish module
CN205591964U (en) * 2016-05-13 2016-09-21 河南理工大学 Colliery is interim fire dam in pit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102138A (en) * 1974-06-12 1978-07-25 Bergwerksverband Gmbh Method for closing off a mine gallery especially for use to prevent spreading of underground explosions
CN101571046A (en) * 2009-06-02 2009-11-04 徐波 Prefabricated member of collapse preventing structure in construction process of subway, mine tunnel and highway tunnel and construction method
CN104564145A (en) * 2014-12-19 2015-04-29 北京瑞诺安科新能源技术有限公司 Coal mine underground sealed wall and constructing method thereof
CN205013035U (en) * 2015-08-13 2016-02-03 河南焦煤能源有限公司中马村矿 Combine and to adopt on working face corner windbreak and build and establish module
CN205591964U (en) * 2016-05-13 2016-09-21 河南理工大学 Colliery is interim fire dam in pit

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