CN106837418B - Mining explosion-proof trapezoidal sealing wall and construction method thereof - Google Patents
Mining explosion-proof trapezoidal sealing wall and construction method thereof Download PDFInfo
- Publication number
- CN106837418B CN106837418B CN201611235679.8A CN201611235679A CN106837418B CN 106837418 B CN106837418 B CN 106837418B CN 201611235679 A CN201611235679 A CN 201611235679A CN 106837418 B CN106837418 B CN 106837418B
- Authority
- CN
- China
- Prior art keywords
- filling
- sealing
- sealing cloth
- proof
- anchor net
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 86
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 238000005065 mining Methods 0.000 title claims abstract description 25
- 238000011049 filling Methods 0.000 claims abstract description 93
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000004744 fabric Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 37
- 229910052742 iron Inorganic materials 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003340 retarding agent Substances 0.000 claims description 3
- 230000000979 retarding effect Effects 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000011449 brick Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- -1 masonry Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a mining explosion-proof trapezoidal sealing wall and a construction method thereof, which are suitable for a mine which is not as good as the situation of constructing the traditional sealing wall or has larger gas emission amount when thermal dynamic disasters such as tunnel explosion, fire and the like occur. The top end and the bottom end are respectively a roadway top plate and a roadway bottom plate, and two sides are roadway walls; the metal anchor nets are arranged on the surrounding rock through expansion bolts, and the two metal anchor nets are connected with each other through iron wires; the inner side of the metal anchor net is provided with sealing cloth, and the metal anchor net is connected with the sealing cloth through iron wires; injecting a filling material into a cavity formed by the sealing cloth and the surrounding rock through the grouting hole, and forming a closed wall after filling; the grouting holes are connected with the filling device through grouting pipes; the middle part of the closed wall body is reserved with a fire-proof material filling pipe which penetrates through the wall body, and the bottom part is reserved with a drain pipe which penetrates through the wall body.
Description
Technical Field
The invention relates to a mining explosion-proof trapezoidal sealing wall and a construction method thereof, which are suitable for a mine which is not as good as the situation of constructing the traditional sealing wall or has larger gas emission amount when thermal dynamic disasters such as tunnel explosion, fire and the like occur.
Background
Coal, one of the major energy sources in the world today, plays an extremely important role in human production and life. However, coal faces various natural disasters in the processes of mining, storage and transportation and application, and the safe production and utilization of coal are seriously influenced. Mine fire is one of the main disaster forms, a large amount of coal resources and equipment can be burnt, a large amount of high-temperature smoke and harmful gas are generated, the life safety of underground workers is endangered, and serious people can cause gas and coal dust explosion to cause a greater disaster. After a fire disaster occurs in a coal mine, if the fire cannot be directly extinguished, the fire area must be closed.
At present, most of traditional airtight walls are constructed by loess, bricks, cement and other materials, and the construction length is 1m3The airtight wall needs 400 bricks and 0.3m3The cement is formed by connecting bricks, cement, sand and other materials, so that the strength is poor, air leakage is easy to occur, the labor intensity of workers is high, the engineering quantity is large, the construction period is long, the efficiency is low, and the disaster rescue efficiency of a coal mine is directly influenced. In recent years, some researchers have constructed materials and applied materialsResearches are carried out on the aspects of methods, sealing wall accessories and the like, and the researches mainly comprise an air bag/filling air bag sealing wall and a filling type sealing wall. The construction process of the air bag/filling air bag sealing wall is simple and quick, and only the air bag/filling air bag is placed in a region to be sealed and then a compressed air system is started, but main construction raw materials are not underground stock materials, air bags/bag bodies with different sizes are required to be arranged according to different roadway sections before construction, and the roadway sections are complex and various, so that the air bag/filling air bag has high technological requirements, cannot be machined in advance, has large limitation and is not suitable for emergency construction under disaster conditions; in addition, the roadway section is complex, sharp objects with edges and corners exist often, air leakage of the used air bag/filling air bag is easily caused, potential safety hazards exist, impact of thermal dynamic disasters such as shock waves is difficult to resist, and the service cycle is limited. The filling type airtight wall is generally realized by firstly adopting materials such as steel plates, wood plates or masonry to construct an inner wall and an outer wall to form a cavity, and then pouring materials into the cavity to fill the cavity to finally form the airtight wall. In the implementation process, because the inner wall and the outer wall need to be constructed by using more steel plates, wood plates or bricks, the inner wall and the outer wall formed by using the wood plates are easy to leave potential safety hazards due to the inflammability, the construction of the inner wall and the outer wall by using the steel plates or the bricks is large in cost, time-consuming and labor-consuming, and the solidification time of the filling body raw materials adopted in the early stage is long, so that the requirement of emergency construction cannot be met. In conclusion, the existing sealing wall and the construction method thereof have the defects of complex raw material transportation, high cost, time and labor consumption, incapability of emergency or difficulty in meeting the requirement of long-time sealing due to construction quality, and incapability of meeting the requirement of efficient emergency rescue in the catastrophe period of major thermodynamic disasters of mines.
Disclosure of Invention
Aiming at the defects, the invention provides a mining explosion-proof trapezoidal closed wall and a construction method thereof.
The invention adopts the following technical scheme:
the top end and the bottom end of the mining explosion-proof trapezoid sealing wall are respectively a roadway top plate and a roadway bottom plate, and two sides of the mining explosion-proof trapezoid sealing wall are provided with roadway walls; the device also comprises elements such as a grouting hole, a metal anchor net, sealing cloth, a filling body, an iron wire, a filling pipe, a sealing valve, a drain pipe, an expansion bolt and the like; the metal anchor nets are arranged on the surrounding rock through expansion bolts, and the two metal anchor nets are connected with each other through iron wires; the inner side of the metal anchor net is provided with sealing cloth, and the metal anchor net is connected with the sealing cloth through iron wires; injecting a filling material into a cavity formed by the sealing cloth and the surrounding rock through the grouting hole, and forming a closed wall after filling; the grouting holes are connected with the filling device through grouting pipes; the middle part of the closed wall body is reserved with a fire-proof material filling pipe which penetrates through the wall body, and the bottom part is reserved with a drain pipe which penetrates through the wall body.
According to the mining explosion-proof trapezoid airtight wall, the grouting pipe is connected with an external filling device, and the filling device is connected with the grouting pipe through the feeding pipe; the raw material slurry forming the filling body is injected into the closed cavity through the filling device.
The filling body raw materials of the mining explosion-proof trapezoid sealing wall comprise a material I consisting of sulphoaluminate cement and a composite retarding and dispersing agent, and a material II consisting of lime, gypsum and a composite accelerating agent, wherein the materials I and II are mixed in proportion and then solidified to form the filling body.
The mining explosion-proof trapezoidal sealing wall is trapezoidal along the longitudinal section of a roadway, the outer end of the sealing wall is an inclined trapezoidal surface, and the inner side of the sealing wall is a right-angle surface. The width of the bottom of the trapezoidal closed wall is 0.5-1.5 m, and the width of the lower bottom is 1.5-2 times of that of the upper bottom, and is specifically determined according to the size of the section of the roadway.
According to the mining explosion-proof trapezoidal sealing wall, the expansion bolts are used for fixing the anchor net and the sealing cloth, the distance between every two expansion bolts is 30-50 cm, the optional specifications are M16, M18, M20, M22, M24 and the like, and the length is 250-350 mm.
The invention relates to a construction method of a mining explosion-proof trapezoidal closed wall, which comprises the following steps:
1) and trimming the anchor net and the sealing cloth according to the shape and the size of the section of the roadway, and then connecting the sealing cloth and the corresponding positions of the anchor net corners by using iron wires. Meanwhile, a grouting hole is formed in the approximate center of the upper parts of the outer anchor net and the sealing cloth and used for injecting raw material slurry of the filling body; orifices are respectively arranged at the approximate center positions of the middle parts of the inner and outer anchor nets and the sealing cloth and used for arranging fire-proof material filling pipes; the bottom approximate center positions of the inner anchor net, the outer anchor net and the sealing cloth are respectively provided with an orifice for arranging a drainage pipeline;
2) and (3) fixing the anchor net and the sealing cloth on the surrounding rock, fixing the inner anchor net and the sealing cloth by using expansion bolts, and then fixing the outer anchor net and the sealing cloth. In the fixing process, two pieces of sealing cloth are ensured to be positioned at the inner side of the anchor net and close to one side of the area to be filled;
3) iron pipes are put into the two orifices reserved in the middle of the anchor nets on the inner side and the outer side to serve as fire prevention and extinguishing material filling pipes, and the opening and closing of the outer ends of the pipes are controlled by valves; an iron pipe is put into the anchor net through two orifices reserved at the bottoms of the inner and outer anchor nets to serve as a drain pipe, and the opening and closing of the outer end of the iron pipe are controlled by a valve;
4) is prepared for fillingOriginal sourcePreparing slurry I and slurry II required for forming a filling body;
5) injecting prepared filling body raw material slurry I and II into a filling device to be uniformly mixed, and then injecting the mixture into a sealing cloth through a grouting hole, wherein the mixing ratio of the slurry I to the slurry II is 1: 1; until the sealing cloth cavity is filled;
6) detecting the filled sealing cloth cavity, and testing the filling degree;
7) and (5) after the filling body is subjected to standing solidification, finishing the construction of the wall body.
Advantageous effects
According to the mining explosion-proof trapezoidal sealing wall and the construction method thereof, the mining metal anchor net and the sealing cloth are used as the boundary of the filling area, so that the defects of poor safety and stability of a cavity constructed by adopting a wood board, time and labor consumption of constructing the cavity by adopting a steel plate or masonry, and difficulty in obtaining, easiness in damage and short service period by adopting a capsule raw material are overcome, and the used raw material is a common article in a coal mine, is convenient to obtain and has low cost.
According to the mining explosion-proof trapezoidal sealing wall and the construction method thereof, the side face of the constructed mining explosion-proof trapezoidal sealing wall is in the shape of a right-angled trapezoid, and the inner side of the sealing wall is in the shape of a right angle, so that the advantage of strong impact resistance of a wall body with a trapezoidal section is fully utilized, and the explosion-proof capability of the sealing wall is further improved.
The filling material provided by the invention is in a fluid state in the conveying process, so that the conveying is more convenient than the conveying and conveying of the traditional materials such as masonry, steel plates, wood plates and the like, and a filling body formed after mixing has strong impact resistance and buffering property and better explosion-proof effect.
According to the mining explosion-proof trapezoidal sealing wall and the construction method thereof, the cavity is formed by adopting a net hanging method in the construction process, the construction of an inner wall and an outer wall is avoided, the construction time is short, and the efficiency is high.
Drawings
FIG. 1 is a front view of the present invention in a mine downhole for rapid formation of a containment wall;
FIG. 2 is a perspective view showing the arrangement of anchor nets and expansion bolts used in constructing the sealing wall according to the present invention;
FIG. 3 is a side view of the cross-sectional structure of FIG. 1A-A;
FIG. 4 is a side view of a cross-sectional structure of a filling and mixing device B-B in FIG. 3.
FIG. 5 is a schematic perspective view of the enclosure wall;
Detailed Description
The invention is further explained in detail below by taking an arch section roadway as an example and combining the attached drawings:
as shown in the figure: a mining trapezoidal explosion-proof airtight wall is suitable for rapid construction of an airtight wall in a catastrophe period of a thermal power disaster in a coal mine. The grouting device mainly comprises grouting holes 4, a metal anchor net 5, sealing cloth 9, a filling body 10, iron wires 11, a filling pipe 12, a sealing valve 13, a drainage pipeline 14 and expansion bolts 17.
The metal anchor net 5 is used for mine support, and materials are convenient to obtain. The metal anchor net 5 is fixed on the surrounding rock 3 by expansion bolts 17 and is connected into a whole by iron wires 11 to ensure the stability. Wherein the distance between the expansion bolts is 30-50 cm.
The sealing cloth 9 inside the metal anchor net is made of flame-retardant cloth and is connected with the anchor net 5 through iron wires 11, so that the slurry is prevented from flowing out through the meshes of the metal anchor net 5.
The filling body 10 is a quick-setting slurry and has high strength. The quick-setting slurry is formed by mixing two basic materials I and II, wherein the material I comprises sulphoaluminate cement and a composite retarding and dispersing agent, and the material II comprises other auxiliary materials such as lime, gypsum and a composite quick-setting agent. The two basic materials are fluids, which is convenient for transportation. At the same time, a coagulant needs to be added.
The filling pipe 12 is used for injecting fire-fighting materials such as mud, foam, inert gas, etc. into the closed area. The lower end of the closed wall is provided with a drain pipe 14 which can release accumulated water in the closed space in time. The side surface of the closed wall is trapezoidal, so that the explosion-proof effect is better. The width of the bottom of the trapezoidal closed wall is 0.5-1.5 m, and the width of the lower bottom is 1.5-2 times of that of the upper bottom, and is specifically determined according to the size of the section of the roadway.
The expansion bolt 17 is used for fixing an anchor net and sealing cloth, can be selected from M16, M18, M20, M22, M24 and the like, and has the length of 250-350 mm.
The construction method of the explosion-proof trapezoid sealing wall for the mine mainly comprises a filling device 6, a valve 7, a grouting pipe 8, a flowmeter 15, a feeding pipe 16, a stirrer 18, a grouting pump 19 and the like.
The construction steps are divided into 4 parts: a preparation phase, a feeding phase, a filling phase and an end phase.
A preparation stage: and trimming the anchor net 5 and the sealing cloth 9 according to the shape and the size of the section of the roadway, wherein the length and the width of the anchor net 5 and the width of the sealing cloth 9 are about 0.8-1 m larger than the length and the width of the roadway, and the extra parts are used for fixing the anchor net 5 and the sealing cloth 9 through expansion bolts 17. The cut anchor net 5 and the sealing cloth 9 are connected and fixed into a whole by iron wires 11 according to the specification of the roadway. As shown in attached drawings 1 and 5, a grouting hole 4 with a diameter of 8-12 cm is formed in the approximate center position of the upper middle part of the outer anchor net 5 and the outer sealing cloth 9 close to the top plate 1, and a grouting pipe 8 is connected for grouting mixed slurry of a filling body; an orifice is respectively arranged at the approximate center positions of the middle parts of the inner and outer anchor nets 5 and the sealing cloth 9, the diameter of the orifice is 10-15 cm, and the orifice is used for arranging a grouting pipe 12; and orifices with the diameter of 8-12 cm are respectively arranged at the approximate central positions of the bottoms of the inner and outer anchor nets 5 and the sealing cloth 9 and used for arranging drainage pipelines 14. The mining metal anchor nets 5 are arranged on the inner side and the outer side of the area to be filled and are fixed by expansion bolts 17. The two anchor nets are connected with iron wires 11 at the corresponding corner positions, so that the anchor nets 5 are prevented from displacing in the filling process. Finally, placing an iron pipe as a fire-proof and fire-extinguishing material filling pipe 12 through two orifices reserved in the middle of the inner and outer anchor nets, wherein the length of the iron pipe is 50-100 cm greater than the distance between the two orifices, and the opening and closing of the outer end of the iron pipe are controlled by a valve; an iron pipe is placed through two orifices reserved at the bottoms of the inner anchor net and the outer anchor net to serve as a drain pipe 14, the length of the iron pipe is 50-100 cm greater than the distance between the two orifices, and the opening and closing of the outer end of the iron pipe are controlled through a valve; the grouting pipe 8 is connected to the grouting hole 4 and fixed with iron wire.
A feeding stage: filling the prepared I and II basic materials into a filling device 6, and controlling the feed flow ratio of I and II to be 1: 1.
and (3) filling stage: and starting the filling device 6, stirring the materials in the filling device 6 to uniformly mix the materials, and filling the area to be filled. When the filling body 10 touches the top plate 1, the slurry inflow speed is controlled by properly adjusting the valve 7-1 until the closing. In order to prevent the filling material from condensing in the filling device, the feeding and filling should be performed simultaneously.
And (5) finishing: after filling, the filling equipment and the like need to be cleaned in time to prevent the filling equipment from being blocked. After the filling is finished for 15-20 minutes, the condensation state of the filling body 10 is sensed through stones, expansion bolts and other substances with high hardness, and after the condensation state of the filling body 10 is good, the external anchor net 5 and the sealing cloth 9 can be detached for recycling or kept as the original state if necessary.
A construction method of an explosion-proof trapezoid sealing wall for a mine is characterized in that a filling device 6 is a stirring and grouting integrated grouting machine, a stirrer and a grouting pump are arranged inside the filling device, two feed inlets I and II are arranged at the front end of the grouting pump, and a feed pipe connected with the feed inlets is 8-12 cm in diameter. And a valve 7-1 is arranged at the front end of the grouting pipe 8 after the filling device 6 and is used for controlling the inflow speed of the grout.
The front end feed pipe 16 is used to prepare a quick setting slurry. And the feed pipe 16 is provided with valves 7-2 and 7-3 and a flow meter 15 near the end of the filling device 6 for controlling the material injection rate. The irrigation pipe 12 and the drain line 14 may be arranged as needed or not, and the irrigation pipe 12 and the drain line 14 may not be needed if the situation is critical.
The invention relates to a mining explosion-proof trapezoid sealing wall, wherein a stirring and grouting integrated grouting machine is adopted as a filling device, two feeding holes are formed in the front end of the filling device, and a stirring machine and a grouting pump are arranged inside the filling device. And a valve is arranged at the front end of the grouting pipe behind the filling device and used for controlling the inflow speed of the grout. The filling time can be adjusted according to the water content and the addition amount of the coagulant. The filling pipe and the drainage pipeline can be arranged according to the requirement or not, if the condition is critical, the filling pipe and the drainage pipeline are not needed.
Claims (4)
1. A construction method of a mining explosion-proof trapezoid sealing wall is disclosed, wherein the top end and the bottom end of the explosion-proof trapezoid sealing wall are respectively a roadway top plate and a roadway bottom plate, and roadway walls are arranged on two sides of the explosion-proof trapezoid sealing wall; the method is characterized in that: the grouting device also comprises grouting holes, a metal anchor net, sealing cloth, a filling body, an iron wire, a filling pipe, a sealing valve, a drain pipe and an expansion bolt; the metal anchor nets are arranged on the surrounding rock through expansion bolts, and the two metal anchor nets are connected with each other through iron wires; the inner side of the metal anchor net is provided with sealing cloth, and the metal anchor net is connected with the sealing cloth through iron wires; injecting a filling material into a cavity formed by the sealing cloth and the surrounding rock through the grouting hole, and forming a closed wall after filling; the grouting holes are connected with the filling device through grouting pipes; the middle part of the closed wall body is reserved with a fire-proof material filling pipe which penetrates through the wall body, and the bottom part of the closed wall body is reserved with a drain pipe which penetrates through the wall body; the method is characterized by comprising the following construction steps:
1) trimming the anchor net and the sealing cloth according to the shape and the size of the section of the roadway, and then connecting the sealing cloth and the corresponding positions at the corners of the anchor net by using iron wires;
meanwhile, a grouting hole is formed in the approximate center of the upper parts of the outer anchor net and the sealing cloth and used for injecting raw material slurry of the filling body; orifices are respectively arranged at the approximate center positions of the middle parts of the inner and outer anchor nets and the sealing cloth and used for arranging fire-proof material filling pipes; the bottom approximate center positions of the inner anchor net, the outer anchor net and the sealing cloth are respectively provided with an orifice for arranging a drainage pipeline;
2) fixing an anchor net and sealing cloth on the surrounding rock, fixing the inner anchor net and the sealing cloth by using expansion bolts, and then fixing the outer anchor net and the sealing cloth;
in the fixing process, two pieces of sealing cloth are ensured to be positioned at the inner side of the anchor net and close to one side of the area to be filled;
3) iron pipes are put into the two orifices reserved in the middle of the anchor nets on the inner side and the outer side to serve as fire prevention and extinguishing material filling pipes, and the opening and closing of the outer ends of the pipes are controlled by valves; an iron pipe is put into the anchor net through two orifices reserved at the bottoms of the inner and outer anchor nets to serve as a drain pipe, and the opening and closing of the outer end of the iron pipe are controlled by a valve;
4) preparing filling raw materials, and preparing slurry I and slurry II required by forming a filling body;
5) injecting prepared filling body raw material slurry I and II into a filling device to be uniformly mixed, and then injecting the mixture into a sealing cloth through a grouting hole, wherein the mixing ratio of the slurry I to the slurry II is 1: 1; until the sealing cloth cavity is filled;
6) detecting the filled sealing cloth cavity, and testing the filling degree;
7) and (5) after the filling body is subjected to standing solidification, finishing the construction of the wall body.
2. The construction method of the mining explosion-proof trapezoidal sealing wall according to claim 1, characterized by comprising the following steps: the grouting pipe is connected with an external filling device, and the filling device is connected with the grouting pipe through a feeding pipe; the raw material slurry forming the filling body is injected into the closed cavity through the filling device.
3. The construction method of the mining explosion-proof trapezoidal sealing wall according to claim 1, characterized by comprising the following steps: the filling body raw material comprises a material I consisting of sulphoaluminate cement and a composite retarding and dispersing agent, and a material II consisting of lime, gypsum and a composite accelerating agent, and the materials are mixed in proportion and then solidified to form the filling body.
4. The construction method of the mining explosion-proof trapezoidal sealing wall according to claim 1, characterized by comprising the following steps: the closed wall body is trapezoidal along the longitudinal section of the roadway, the outer end of the closed wall body is an inclined trapezoidal surface, and the inner side of the closed wall body is a right-angle surface.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235679.8A CN106837418B (en) | 2016-12-28 | 2016-12-28 | Mining explosion-proof trapezoidal sealing wall and construction method thereof |
| AU2017388776A AU2017388776B2 (en) | 2016-12-28 | 2017-11-13 | Mine anti-explosion trapezoidal sealing wall and construction method therefor |
| PCT/CN2017/110694 WO2018121107A1 (en) | 2016-12-28 | 2017-11-13 | Mine anti-explosion trapezoidal sealing wall and construction method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235679.8A CN106837418B (en) | 2016-12-28 | 2016-12-28 | Mining explosion-proof trapezoidal sealing wall and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106837418A CN106837418A (en) | 2017-06-13 |
| CN106837418B true CN106837418B (en) | 2020-12-22 |
Family
ID=59112592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235679.8A Active CN106837418B (en) | 2016-12-28 | 2016-12-28 | Mining explosion-proof trapezoidal sealing wall and construction method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106837418B (en) |
| AU (1) | AU2017388776B2 (en) |
| WO (1) | WO2018121107A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837418B (en) * | 2016-12-28 | 2020-12-22 | 中国矿业大学 | Mining explosion-proof trapezoidal sealing wall and construction method thereof |
| CN107178391B (en) * | 2017-06-14 | 2018-12-28 | 江西理工大学 | A kind of construction method and application of armored concrete fire dam |
| CN110043315B (en) * | 2019-05-30 | 2024-03-12 | 西安科技大学 | Rapid sealing device and method for mine disaster area with impact resistance |
| CN111502751B (en) * | 2020-05-29 | 2021-11-09 | 中蓝长化工程科技有限公司 | Air bag type retaining wall for underground cemented filling and construction method |
| CN112253241B (en) * | 2020-10-21 | 2022-09-27 | 济宁学院 | Mining goaf collapse impact air wave automatic buffering protection system |
| CN112627894B (en) * | 2020-12-23 | 2023-05-12 | 国能包头能源有限责任公司 | Underground airtight wall construction method and airtight wall |
| CN114811404B (en) * | 2022-03-30 | 2024-04-26 | 辽宁工程技术大学 | Device for storing carbon dioxide underground coal mine in portable mode and application method of device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5385504A (en) * | 1993-08-30 | 1995-01-31 | Earth Support Systems | Permanent ventilation seal |
| CN201232572Y (en) * | 2008-07-14 | 2009-05-06 | 义马煤业(集团)有限责任公司 | Coal mine tunnel goaf fire wall |
| CN101509283A (en) * | 2009-03-19 | 2009-08-19 | 吴淑环 | External thermal insulation composite wall of exterior wall with support |
| CN103069110A (en) * | 2010-07-30 | 2013-04-24 | Fci特拉华控股有限公司 | Engineered mine seal |
| CN103726875A (en) * | 2014-01-16 | 2014-04-16 | 华北科技学院 | Method for remote filling of explosion-proof compression-resistant closing of coal mine |
| CN105179011B (en) * | 2015-09-04 | 2018-01-19 | 金建工程设计有限公司 | A kind of tunnel closure facility and its method for blocking |
| CN205135708U (en) * | 2015-11-13 | 2016-04-06 | 西安科技大学 | Novel withstand voltage fire seal in collecting space area |
| CN205135707U (en) * | 2015-11-13 | 2016-04-06 | 西安科技大学 | Withstand voltage fire seal in collecting space area |
| CN205577140U (en) * | 2016-04-06 | 2016-09-14 | 林壮 | Foldable metal mesh blast wall |
| CN106121722A (en) * | 2016-06-25 | 2016-11-16 | 扬州中矿建筑新材料科技有限公司 | A kind of method quickly constructing fire dam |
| CN106837418B (en) * | 2016-12-28 | 2020-12-22 | 中国矿业大学 | Mining explosion-proof trapezoidal sealing wall and construction method thereof |
-
2016
- 2016-12-28 CN CN201611235679.8A patent/CN106837418B/en active Active
-
2017
- 2017-11-13 WO PCT/CN2017/110694 patent/WO2018121107A1/en active Application Filing
- 2017-11-13 AU AU2017388776A patent/AU2017388776B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018121107A1 (en) | 2018-07-05 |
| AU2017388776B2 (en) | 2021-04-01 |
| AU2017388776A1 (en) | 2019-07-25 |
| CN106837418A (en) | 2017-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106837418B (en) | Mining explosion-proof trapezoidal sealing wall and construction method thereof | |
| CN102434194B (en) | Gas drainage drill hole structure formed in coal layer and method for fabricating same | |
| CN110017167B (en) | Coal mine explosion-proof sealing wall and construction method thereof | |
| CN104628414B (en) | Mining fast hard inorganic filler support material and using method thereof | |
| CN105422146A (en) | Underground stope artificial pillar expansion jacking device and construction method | |
| CN101343167A (en) | Backfilled enclosed material and its use method | |
| CN106220216B (en) | A kind of high-strength mining expansion filling fireproofing extinguishing materials and its application method | |
| CN112323823B (en) | Filling device and method for waste air-raid shelter of pile foundation construction site | |
| CN109083682A (en) | A kind of construction method of mine working antiseepage high intensity fire dam | |
| CN103195467A (en) | Hydraulic fracturing and grouting solidification combined rock cross-cut coal uncovering method | |
| CN109779670A (en) | A kind of closed composite construction of the quick fire-and explosion-proof pressure-bearing in underground and implementation method | |
| CN104234750A (en) | Rapid self-built movable sluice wall of mine and construction method of rapid self-built movable sluice wall | |
| CN104743999A (en) | Dual-component mining foam paste filling material and preparation method thereof | |
| CN110593807A (en) | Water plugging method suitable for shallow-surface large-opening-degree fractured rock mass roadway | |
| CN109538295A (en) | Seal groundwater in mining area library system | |
| Guo et al. | Physical simulation of water inrush through the mine floor from a confined aquifer | |
| CN110788997B (en) | Foam concrete filling device and application thereof and foam concrete filling method | |
| CN104446624A (en) | Inorganic foaming filling and reinforcing composition for coal mine as well as using method and application thereof | |
| CN104695980B (en) | For the regional Lining of Power Tunnel structure of high buried depth, High-geotemperature, high stress rock burst | |
| CN106050303A (en) | Underground roadway plugging method and device | |
| CN105198346B (en) | Inorganic filling material | |
| CN116575934A (en) | Roadway roof-falling support combining ceramsite blocking and steel arch and construction method thereof | |
| CN105756706A (en) | Underground coal mine temporary fire dam and airtight construction method thereof | |
| CN113863984B (en) | Method for preventing and controlling air leakage in exploitation of extremely-close coal seam group | |
| CN109627042A (en) | A kind of low-intensity high-expansion gelling filler and its fill method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |