CN105756706A - Underground coal mine temporary fire dam and airtight construction method thereof - Google Patents

Underground coal mine temporary fire dam and airtight construction method thereof Download PDF

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Publication number
CN105756706A
CN105756706A CN201610314634.3A CN201610314634A CN105756706A CN 105756706 A CN105756706 A CN 105756706A CN 201610314634 A CN201610314634 A CN 201610314634A CN 105756706 A CN105756706 A CN 105756706A
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China
Prior art keywords
brick
fragment
tunnel
coal mine
horizontal location
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CN201610314634.3A
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Chinese (zh)
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CN105756706B (en
Inventor
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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Publication of CN105756706A publication Critical patent/CN105756706A/en
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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 an underground coal mine temporary fire dam which is formed by combining and assembling at least three layers and three rows of bricks. The whole appearance of each brick is in a cuboid shape. The bricks are made of light high-strength foaming materials. Criss-cross organic anchor meshes are arranged in each brick. The bricks in each layer are connected in series through a horizontal connecting rod penetrating in the bricks in the horizontal direction into a whole. The bricks in each row are connected in series through a vertical connecting rod penetrating in the bricks in the vertical direction into a whole. Each brick is wrapped by a wind tunnel cloth attached to the surface of the brick. The invention further discloses an airtight construction method of the underground coal mine temporary fire dam. The method is easy and convenient to operate and can seal a large-area roadway within a short time. Precious time and safety guarantee are provided for coal mine safety mining.

Description

Underground coal mine temporary airtight wall and airtight execution method thereof

Technical field

The invention belongs to safety of coal mines technical field of construction, be specifically related to a kind of underground coal mine temporary airtight wall and airtight execution method thereof.

Background technology

China's highly gassy mine accounts for the 50% of colliery sum, increase along with mining depth, mining operations district is subject to the threat of the disasters such as coal dust, flammable explosive gas (methane), roof and floor, water, fire, and underground coal mine accident has a strong impact on the safe efficient development of coal industry and the life security of underground work personnel.China's coal-mine spontaneous combustion is very serious, in the process of coalmine rescue, if airtight not in time, shortens the time controlling the intensity of a fire, the disaster that meeting re-initiation is even more serious.In order to prevent spontaneous combustion of coal seam, gas explosion, underground coal mine usually needs to build explosion-proof fire dam isolation burning things which may cause a fire disaster, primer sector, gas enrichment region, harmful gas, to prevent the further expansion of disaster.The fire dam of underground coal mine is divided into two kinds: 1. for the temporary airtight to keep out the wind.Fire dam sternly can not cause leaking out, and causes the deficiency in draught needing wind point, has a strong impact on safety in production;2. forever airtight for tunnel and mined out interval.Fire dam sternly can not cause in goaf that the toxic and harmfuls such as gas are leaked to tunnel, and then causes the coal seam in goaf, gas spontaneous combustion, and the healthy of staff in serious threat.Therefore, build fire dam easy spontaneous combustion district, methane accumulation band, harmful gas and working area are carried out isolation to be necessary.

At present, underground coal mine temporary airtight wall mainly apply brick and wood, both materials effort when operation, construction is time-consuming again, and security reliability is poor, it is impossible to fast and effeciently contain spreading of burst accident.

Summary of the invention

The present invention is to solve weak point of the prior art, it is provided that a kind of lightweight, volume is big, easily operation and can large area, underground coal mine temporary airtight wall multi-faceted, closed roadway with multi-angle and airtight execution method thereof.

For solving above-mentioned technical problem, the present invention adopts the following technical scheme that underground coal mine temporary airtight wall, including being at least assembled by the brick combination of three layers and three row, each fragment of brick monnolithic case is rectangular shape, fragment of brick is made up of light-high-strength expanded material, the organic anchor mesh sheet being criss-cross arranged it is equipped with in each fragment of brick, between the fragment of brick of every layer, the horizontal brace rod series connection by being located in fragment of brick in the horizontal direction is integrated, and between the fragment of brick of each column, the vertical connecting rod series connection by being vertically located in fragment of brick is integrated;Each fragment of brick outer wrap has and the air duct fabric of fragment of brick surface laminating.

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

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

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

(1) at the mould of ground assembled tile formation of lots: the joint portion screw between each template of mould carries out assembling, anchoring, and die top is uncovered;Screw is readily accessible and recycles, and mould will not be damaged by the use of screw, it is possible to extend the mold use time limit;

(2) air duct fabric is close to mold wall lay, reserves unnecessary air duct fabric at die top;

(3) lubricating oil is applied to equably the surface of air duct fabric, then light-high-strength expanded material is loaded in filling gun, after light-high-strength expanded material mix homogeneously, become compound, inject a mixture into equipped with in the mould of air duct fabric with filling gun;In the process of injection, braiding webbed organic anchor mesh sheet level and vertically putting in compound, to strengthen caking property and the tensile strength of fragment of brick after molding;Before compound is about to fill mould, handle is put in compound according to predetermined position, and inner for handle and organic anchor mesh sheet is connected, so guarantee the fixing of handle and conveniently carry fragment of brick;After compound fills mould, with air duct fabric reserved outside mould, compound is packaged, and with plank and weight compacting on air duct fabric;

(4) material expansion molding to be mixed is, after reaching the described brick structure of instructions for use, backed out by screw with rig, removes mould and fragment of brick is carried out the demoulding;

(5) repeat the operation of step (1), (2), (3), produce several fragments of brick;

(6) some connecting rods and the fragment of brick being fabricated to being transported under mine and need airtight roadway position, including in discarded tunnel, the tunnel needing wind or the easy tunnel that spontaneous combustion occurs, that then determines 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 them fragment of brick sidepiece stretches into and is assembled in the vertical detent of the fragment of brick sidepiece adjacent with this fragment of brick, handle 1 on each fragment of brick is positioned 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 being inserted into by horizontal brace rod in these 3 ~ 5 fragments of brick in the horizontal direction, 3 ~ 5 fragments of brick constitute block one layer overall;The some layers of equal block of horizontal length are assembled again according to this step;

(8) during closed roadway, according to roadway shape and size, the block of each layer piled up is assembled, cuts, block after cutting is with the shape and size in applicable tunnel, handle is utilized to be placed into bottom tunnel by the block of primary assembling, well cutting, then the block of the second layer being placed on ground floor block, the horizontal location fin bar of second layer lower surface stretches in the horizontal location groove being assembled to ground floor upper surface, and the handle unification on the block of coal seam is towards tunnel axial direction;According to this mode of operation, block is piled up in wanted airtight region, tunnel formation fire dam successively, finally vertical connecting rod is vertically plugged successively in the fragment of brick of every layer of upper and lower correspondence, the block making all numbers of plies all connects as a whole, fire dam is full of cross section, whole tunnel, to reach to seal the requirement in tunnel.

Step (7) and (8) smear yellow mud between the fragment of brick of same layer be bonded as one, making not have between fragment of brick gap, the space of one fragment of brick of insufficient space between wall and fire dam adopts the woven bag of dress yellow mud and smears yellow mud closed roadway outside woven bag.

Step (6) if in the tunnel bigger at blast, determine the position of building by laying bricks or stones of fire dam, adopt and vertically hang anchor net in wall, put fragment of brick against anchor net windward side.

Light-high-strength expanded material is that polyurethane, solid Trajet, Roc are stopped or malisan material.

Adopting technique scheme, the effect of each parts in the present invention is as follows:

(1) mould of molding fragment of brick, material is iron plate, and first mould is to split, and assembles, it is possible to play the effect of fixing brick shapes before molding fragment of brick;(2) air duct fabric, lays the surface to mould inner wall, plays the effect preventing filling material with die bonds;(3) lubricating oil, is applied to the surface of air duct fabric, prevents air duct fabric and filling material adhesion when the demoulding;(4), handle, fix through mould before molding fragment of brick, contribute to use fragment of brick time carry;(5) screw, reinforces mould coupling part;(6) organic anchor mesh sheet, is woven into netted in advance, places in the process of molding fragment of brick, plays the effect increasing the tensile strength of fragment of brick, stability;(7) polyurethane A material and B material, after the mould installation of molding fragment of brick, is filled in mould by polyurethane A material and B material, is the material of molding fire dam;(8) filling gun, is expelled to polyurethane A material and B material in the mould of molding fragment of brick;(9) horizontal brace rod and vertical connecting rod, be interspersed in fragment of brick, it is possible to multiple angles, orientation are interted, and plays the effect in large area isolation tunnel;(10) in each fragment of brick forming process, can directly light-high-strength be foaming material shaped;When desired strength is higher, the organic anchor mesh sheet being criss-cross arranged can be equipped with in each fragment of brick.(11) vertical detent and vertical convex rib, horizontal location groove and horizontal location fin bar is adopted to assemble between adjacent fragment of brick, so it is possible not only to make fire dam surfacing, keep good perpendicularity, and the sealing function played, it is to avoid wind is passed through by the gap between fragment of brick.

The invention have the benefit that

(1) lay this kind of fragment of brick in tunnel, lay bricks with traditional, pile up wood compared with, there is the advantage of light weight, labour force can be reduced to a greater degree, save the activity duration, goaf and mining area, spreading of effective containment accident can be completely cut off when having an accident in time, alleviate the harm that accident causes;

(2) for laying bricks, pile up this sealing method of wood, fragment of brick, wood volume are little, and weight is big, operates and loses time and labour force, use the distribution method in literary composition to be possible not only to closed roadway in large area, and easy and simple to handle, save time, laborsaving;

(3) the interim fragment of brick of coal mine down-hole tunnel and sealing method are simple to operate, practical, especially for the tunnel of large area, the big degree of depth, it is possible in short-term, closed roadway effectively;

(4) for need in short-term closed roadway time, coal mine down-hole tunnel temporary airtight method can the shortest time ground 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, wood expense, and can reuse, save the materials expense of closed roadway.

The present invention is for large area, temporary airtight tunnel, big degree of depth ground, goaf and mining area can be completely cut off effectively and quickly, and enclosed material light weight, sealing method is easy and simple to handle, time, labour force can be saved significantly, isolation goaf and mining area effectively, for the air quantity supply that the tunnel offer of air requirement is sufficient.Especially when there is unexpected accident, the advantage that enclosed material is light, area is big can farthest embody, and then controls the dangerous circumstances in time, spreading of effective containment accident, alleviates the accident harm to colliery mining belt and loss.

The present invention is simple and easy to operate, it is possible to large area, short time closed roadway.Quality time and safety guarantee is provided for safety of coal mines exploitation.

Accompanying drawing explanation

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

Detailed description of the invention

As shown in Figure 1, the underground coal mine temporary airtight wall of the present invention, including being at least assembled by the brick combination of three layers and three row, each fragment of brick 1 monnolithic case is rectangular shape, fragment of brick 1 is made up of light-high-strength expanded material of fragment of brick, the organic anchor mesh sheet (meaning not shown in the figures is out) being criss-cross arranged it is equipped with in each fragment of brick 1, between the fragment of brick 1 of every layer, horizontal brace rod 2 series connection by being located in fragment of brick 1 in the horizontal direction is integrated, and between the fragment of brick 1 of each column, vertical connecting rod 3 series connection by being vertically located in fragment of brick 1 is integrated;Each fragment of brick 1 outer wrap has and the air duct fabric (meaning not shown in the figures is out) of fragment of brick 1 surface laminating.

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

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

The downside of each fragment of brick 1 and upper side are respectively equipped with horizontal location groove 7 and horizontal location fin bar 8 along left and right horizontal direction, the equal semicircular in shape in cross section of horizontal location groove 7 and horizontal location fin bar 8, the radius of horizontal location fin bar 8 is less than the radius of horizontal location groove 7, and the distance of distance between center line fragment of brick 1 leading flank of horizontal location fin bar 8 and horizontal location groove 7 is equal.

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

(1) mould of fragment of brick 1 molding is assembled on ground: the joint portion screw between each template of mould carries out assembling, anchoring, and die top is uncovered;Screw is readily accessible and recycles, and mould will not be damaged by the use of screw, it is possible to extend the mold use time limit;

(2) air duct fabric is close to mold wall lay, reserves unnecessary air duct fabric at die top;

(3) lubricating oil is applied to equably the surface of air duct fabric, then light-high-strength expanded material is loaded in filling gun, after light-high-strength expanded material mix homogeneously, become compound, inject a mixture into equipped with in the mould of air duct fabric with filling gun;In the process of injection, braiding webbed organic anchor mesh sheet level and vertically putting in compound, to strengthen caking property and the tensile strength of fragment of brick 1 after molding;Before compound is about to fill mould, handle 4 is put in compound according to predetermined position, and inner for handle 4 and organic anchor mesh sheet is connected, so guarantee the fixing of handle 4 and convenient carrying fragment of brick 1;After compound fills mould, with air duct fabric reserved outside mould, compound is packaged, and with plank and weight compacting on air duct fabric;

(4) material expansion molding to be mixed is, after reaching described fragment of brick 1 structure of instructions for use, backed out by screw with rig, removes mould and fragment of brick 1 is carried out the demoulding;

(5) repeat the operation of step (1), (2), (3), produce several fragments of brick 1;

(6) some connecting rods and the fragment of brick 1 being fabricated to being transported under mine and need airtight roadway position, including in discarded tunnel, the tunnel needing wind or the easy tunnel that spontaneous combustion occurs, that then determines 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 them fragment of brick 1 sidepiece stretches into and is assembled in the vertical detent 5 of fragment of brick 1 sidepiece adjacent with this fragment of brick 1, handle 41 on each fragment of brick 1 is positioned at the same side, horizontal location groove 7 is respectively positioned on each fragment of brick 1 upper surface, and horizontal location fin bar 8 is respectively positioned on each fragment of brick 1 lower surface;Then being inserted in the horizontal direction by horizontal brace rod 2 in these 3 ~ 5 fragments of brick 1,3 ~ 5 fragments of brick 1 constitute block one layer overall;The some layers of equal block of horizontal length are assembled again according to this step;

(8) during closed roadway, according to roadway shape and size, the block of each layer piled up is assembled, cuts, block after cutting is with the shape and size in applicable tunnel, handle 4 is utilized to be placed into bottom tunnel by the block of primary assembling, well cutting, then the block of the second layer is placed on ground floor block, the horizontal location fin bar 8 of second layer lower surface stretches in the horizontal location groove 7 being assembled to ground floor upper surface, and the handle 4 on the block of coal seam is unified towards tunnel axial direction;According to this mode of operation, block is piled up in wanted airtight region, tunnel formation fire dam successively, finally vertical connecting rod 3 is vertically plugged successively in the fragment of brick 1 of every layer of upper and lower correspondence, the block making all numbers of plies all connects as a whole, fire dam is full of cross section, whole tunnel, to reach to seal the requirement in tunnel.

Step (7) and (8) smear yellow mud between the fragment of brick 1 of same layer be bonded as one, making not have between fragment of brick 1 gap, the space of one fragment of brick 1 of insufficient space between wall and fire dam adopts the woven bag of dress yellow mud and smears yellow mud closed roadway outside woven bag.

Step (6) if in the tunnel bigger at blast, determine the position of building by laying bricks or stones of fire dam, adopt and vertically hang anchor net in wall, put fragment of brick 1 against anchor net windward side.

Light-high-strength expanded material is that polyurethane, solid Trajet, Roc are stopped or malisan material.

Above example is only in order to illustrative not limiting technical scheme, although the present invention being described in detail with reference to above-described embodiment, it will be understood by those within the art that: still the present invention can be modified or equivalent replacement, without deviating from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention.

Claims (8)

1. underground coal mine temporary airtight wall, it is characterized in that: include at least being assembled by the brick combination of three layers and three row, each fragment of brick monnolithic case is rectangular shape, fragment of brick is made up of light-high-strength expanded material, the organic anchor mesh sheet being criss-cross arranged it is equipped with in each fragment of brick, between the fragment of brick of every layer, the horizontal brace rod series connection by being located in fragment of brick in the horizontal direction is integrated, and between the fragment of brick of each column, the vertical connecting rod series connection by being vertically located in fragment of brick is integrated;Each fragment of brick outer wrap has and the air duct fabric of fragment of brick surface laminating.
2. underground coal mine temporary airtight wall according to claim 1, it is characterised in that: each fragment of brick is equipped with handle, and the end that handle extend in fragment of brick is connected with organic anchor mesh sheet.
3. underground coal mine temporary airtight wall according to claim 2, it is characterized in that: the left surface of each fragment of brick and right flank are vertically respectively equipped with vertical detent and vertical convex rib, the equal semicircular in shape in cross section of vertical detent and vertical convex rib, the radius of vertical convex rib is less than the radius of vertical detent, and the distance of the distance between center line fragment of brick leading flank of vertical convex rib and vertical detent is equal.
4. underground coal mine temporary airtight wall according to claim 3, it is characterized in that: the downside of each fragment of brick and upper side are respectively equipped with horizontal location groove and horizontal location fin bar along left and right horizontal direction, the equal semicircular in shape in cross section of horizontal location groove and horizontal location fin bar, the radius of horizontal location fin bar is less than the radius of horizontal location groove, and the distance of the distance between center line fragment of brick leading flank of horizontal location fin bar and horizontal location groove is equal.
5. the airtight execution method of underground coal mine temporary airtight wall according to claim 4, it is characterised in that: comprise the following steps:
(1) at the mould of ground assembled tile formation of lots: the joint portion screw between each template of mould carries out assembling, anchoring, and die top is uncovered;Screw is readily accessible and recycles, and mould will not be damaged by the use of screw, it is possible to extend the mold use time limit;
(2) air duct fabric is close to mold wall lay, reserves unnecessary air duct fabric at die top;
(3) lubricating oil is applied to equably the surface of air duct fabric, then light-high-strength expanded material is loaded in filling gun, after light-high-strength expanded material mix homogeneously, become compound, inject a mixture into equipped with in the mould of air duct fabric with filling gun;In the process of injection, braiding webbed organic anchor mesh sheet level and vertically putting in compound, to strengthen caking property and the tensile strength of fragment of brick after molding;Before compound is about to fill mould, handle is put in compound according to predetermined position, and inner for handle and organic anchor mesh sheet is connected, so guarantee the fixing of handle and conveniently carry fragment of brick;After compound fills mould, with air duct fabric reserved outside mould, compound is packaged, and with plank and weight compacting on air duct fabric;
(4) material expansion molding to be mixed is, after reaching the described brick structure of instructions for use, backed out by screw with rig, removes mould and fragment of brick is carried out the demoulding;
(5) repeat the operation of step (1), (2), (3), produce several fragments of brick;
(6) some connecting rods and the fragment of brick being fabricated to being transported under mine and need airtight roadway position, including in discarded tunnel, the tunnel needing wind or the easy tunnel that spontaneous combustion occurs, that then determines 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 them fragment of brick sidepiece stretches into and is assembled in the vertical detent of the fragment of brick sidepiece adjacent with this fragment of brick, handle 1 on each fragment of brick is positioned 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 being inserted into by horizontal brace rod in these 3 ~ 5 fragments of brick in the horizontal direction, 3 ~ 5 fragments of brick constitute block one layer overall;The some layers of equal block of horizontal length are assembled again according to this step;
(8) during closed roadway, according to roadway shape and size, the block of each layer piled up is assembled, cuts, block after cutting is with the shape and size in applicable tunnel, handle is utilized to be placed into bottom tunnel by the block of primary assembling, well cutting, then the block of the second layer being placed on ground floor block, the horizontal location fin bar of second layer lower surface stretches in the horizontal location groove being assembled to ground floor upper surface, and the handle unification on the block of coal seam is towards tunnel axial direction;According to this mode of operation, block is piled up in wanted airtight region, tunnel formation fire dam successively, finally vertical connecting rod is vertically plugged successively in the fragment of brick of every layer of upper and lower correspondence, the block making all numbers of plies all connects as a whole, fire dam is full of cross section, whole tunnel, to reach to seal the requirement in tunnel.
6. the airtight execution method of underground coal mine temporary airtight wall according to claim 5, it is characterized in that: step (7) and (8) smear yellow mud between the fragment of brick of same layer and is bonded as one, making not have between fragment of brick gap, the space of one fragment of brick of insufficient space between wall and fire dam adopts the woven bag of dress yellow mud and smears yellow mud closed roadway outside woven bag.
7. the airtight execution method of underground coal mine temporary airtight wall according to claim 5, it is characterized in that: step (6) if in the tunnel bigger at blast, determine fire dam build position by laying bricks or stones, adopt and vertically hang anchor net in wall, put fragment of brick against anchor net windward side.
8. the airtight execution method of underground coal mine temporary airtight wall according to claim 5, it is characterised in that: light-high-strength expanded material is that polyurethane, solid Trajet, Roc are 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 (3)

* 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

Cited By (3)

* 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

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