AU2017388776B2 - Mine anti-explosion trapezoidal sealing wall and construction method therefor - Google Patents
Mine anti-explosion trapezoidal sealing wall and construction method therefor Download PDFInfo
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- AU2017388776B2 AU2017388776B2 AU2017388776A AU2017388776A AU2017388776B2 AU 2017388776 B2 AU2017388776 B2 AU 2017388776B2 AU 2017388776 A AU2017388776 A AU 2017388776A AU 2017388776 A AU2017388776 A AU 2017388776A AU 2017388776 B2 AU2017388776 B2 AU 2017388776B2
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- sealing
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- cloths
- anchor nets
- pipe
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- 238000007789 sealing Methods 0.000 title claims abstract description 106
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000004880 explosion Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 47
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 26
- 239000002994 raw material Substances 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 239000011268 mixed slurry Substances 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 239000011449 brick Substances 0.000 description 8
- 239000003245 coal Substances 0.000 description 8
- 210000004712 air sac Anatomy 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000004575 stone Substances 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
- 238000003756 stirring Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000002360 preparation method Methods 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
- 239000002817 coal dust Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 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
- 239000003517 fume Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture 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
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
Abstract
A mine anti-explosion trapezoidal sealing wall and a construction method therefor, which are suitable for the situation that it's too late to construct a conventional sealing wall when thermodynamic disasters such as an explosion and a fire occur in a tunnel or a mine with a large gas emission quantity. A tunnel roof (1) and a floor (2) are respectively at the top end and the bottom end, and tunnel walls on the two sides; metal anchor nets (5) are arranged on wall rock by means of expansion bolts (17), and the two metal anchor nets (5) are connected to each other by means of iron wires (11); sealing cloths (9) are provided on the inner sides of the metal anchor nets (5), and the metal anchor nets (5) are connected to the sealing cloths (9) by means of iron wires (11); a material of a body to be filled (10) is injected, by means of a grouting hole (4), into a cavity formed of the sealing cloths (9) and the wall rock, and the sealing wall is formed after filling; the grouting hole (4) is connected to a filling device (6) by means of a grouting pipe (8); a pouring pipe (12) made of a fire preventing and extinguishing material and penetrating through the wall is reserved in the middle of the sealing wall, and a water drainage pipe (14) penetrating through the wall is reserved at the bottom of the sealing wall.
Description
Field of the Invention
[0001] The present invention relates to a mine anti-explosion trapezoidal sealing wall and a construction method therefor, which are suitable for the situation that it's too late to construct a conventional sealing wall when thermodynamic disasters such as an explosion and a fire occur in a tunnel or a mine with a large gas emission quantity.
[0002]
Description of Related Art
[0003] As one of the major energy sources in the world today, coal plays an extremely important role in human production and life. However, the threat of various natural disasters during mining, storage, transportation, and application of coal seriously affects the safe production and utilization of coal. Mine fire is one of the main forms of disasters. It may burn a large amount of coal resources and devices, produce lots of high-temperature fumes and harmful gases, and endanger the life safety of underground workers. In severe cases, it may incur gas and coal dust explosions, resulting in even greater disasters. Once a fire breaks out in a coal mine, the fire zone must be blocked if it is impossible to directly extinguish the fire.
[0004] At present, most of the conventional sealing walls are constructed of less, bricks, cement, and other materials. 400 bricks and 0.3 m 3 of cement are required to build 1 m 3 of such sealing walls. Being made up of bricks bonded with cement, sand, and other materials, the sealing wall has poor strength and suffers from air leakage. In addition, the building of the sealing wall requires high labor intensity, heavy workload, and a long construction period and is thus of low efficiency, which directly affects the disaster relief efficiency of coal mines. In recent years, some researchers have carried out researches from the perspectives of construction materials, construction methods, sealing wall attachments and the like, and
mainly put forward air bladder/inflatable bag-type sealing walls and filling-type sealing walls. The construction process of an air bladder/inflatable bag-type sealing wall is simple and rapid. It only needs to place an air bladder/inflatable bag into an area to be sealing and then activate a compressed air system. However, the main raw materials for construction are not regular underground materials. Different sizes of inflatable bags/bladders need to be provided according to different tunnel sections before construction. Due to complex and diverse tunnel sections, the air bladders/inflatable bags have high process requirements and cannot be processed in advance, so that they have very limited applications and are not suitable for emergency construction in the event of a disaster. In addition, sharp objects with angular edges usually exist on complex tunnel sections and may easily cause air leakage of the air bladder/inflatable bag, which poses a safety hazard and makes it difficult to resist the impact of thermodynamic disasters such as shock waves, thus resulting in a limited service life of the air bladder/inflatable bag. The filling-type sealing wall is generally formed by constructing inner and outer wall bodies using materials such as steel plates, wood plates, or bricks and stones so as to define a cavity, and then pouring materials into the cavity so as to form a sealing wall after filling. During the implementation, plenty of steel plates, wood plates, or bricks are needed for the construction of the inner and outer wall bodies. The inner and outer wall bodies made of wood plates present safety hazards due to their flammability. Constructing the inner and outer wall bodies using steel plates or bricks is high in cost and is time-consuming and labor-intensive, and a raw material of a filled body that is used in the early stage takes a long time for solidification, thus not satisfying the needs of emergency construction. In view of the above, as for the existing sealing walls and construction methods therefor, the transportation of raw materials is complex, the cost is high, plenty of time and efforts are needed, emergency circumstances cannot be handled, the construction quality is unsatisfactory for long-term sealing, and the demands of high-efficiency emergency rescue in the case of major mine thermodynamic disasters cannot be satisfied.
[0005]
[0006] To solve the above deficiencies, the present invention provides a mine anti explosion trapezoidal sealing wall and a construction method therefor.
[0007] The present invention adopts the following technical solutions.
The present invention provides a mine anti-explosion trapezoidal sealing wall, with the top and bottom of the sealing wall being respectively the roof and floor of a mining tunnel, and the sides of the sealing wall being the tunnel walls. The sealing wall further includes a grouting hole, metal anchor nets, sealing cloths, a filled body, iron wires, a pouring pipe, seal valves, a water drainage pipe, expansion bolts, and other components. The metal anchor nets are arranged on wall rock by means of the expansion bolts, and the two metal anchor nets are connected to each other by means of the iron wires. The sealing cloths are provided on the inner sides of the metal anchor nets, and the metal anchor nets are connected to the sealing cloths by means of the iron wires. The material of the filled body is injected, by means of the grouting hole, into a cavity formed of the sealing cloths and the wall rock to form the filled body, and the sealing wall is formed after filling. The grouting hole is connected to a filling device by means of a grouting pipe. The pouring pipe for a fire preventing and extinguishing material and penetrating through the wall is reserved in a mid section of the sealing wall, and the water drainage pipe penetrating through the wall is reserved at the bottom of the sealing wall.
[0008] According to the mine anti-explosion trapezoidal sealing wall of the present invention, the grouting pipe is connected to the external filling device, and the filling device is connected to the grouting pipe by means of feed pipes; and a raw material slurry for forming the filled body is injected by the filling device into the sealing cavity.
[0009] According to the mine anti-explosion trapezoidal sealing wall of the present invention, the raw materials of the filled body include a material I consisting of sulphoaluminate cement and a composite set-retarding dispersant and a material II consisting of lime, gypsum, and a composite setting accelerator, and the two materials I and II are mixed in proportion and solidified to form the filled body.
[0010] According to the mine anti-explosion trapezoidal sealing wall of the present invention, the longitudinal section of the sealing wall along the tunnel is trapezoidal with a gradient surface at an outer side and a right-angular surface at an inner side. The trapezoidal sealing wall has a top end of 0.5 to 1.5 m in width and a bottom end of 1.5 to 2 times wider than the top end, which specifically depend on the size of the tunnel section.
[0011] According to the mine anti-explosion trapezoidal sealing wall of the present invention, the expansion bolts are used to fix the anchor nets and the sealing cloths. The expansion bolts are spaced from each other by 30 to 50 cm. The optional specifications of the expansion bolts include M16, M18, M20, M22, M24 and the like, ranging from 250 to 350 mm in length.
[0012] The present invention provides a construction method for the mine anti-explosion trapezoidal sealing wall, which includes the following steps:
1) trimming the anchor nets and the sealing cloths according to the shape and size of a tunnel section, and connecting corresponding edges and corners of the sealing cloths and the anchor nets by means of the iron wires; providing the grouting hole used to inject a raw material slurry forforming the filled body, at approximately the central positions on the upper parts of the outer anchor net and the outer sealing cloth; providing holes used to lay the pouring pipe for a fire preventing and extinguishing material, at approximately the central positions in the middle of the inner and outer anchor nets and the sealing cloths respectively; and providing holes used to lay the water drainage pipe, at approximately the central positions on the bottom of the inner and outer anchor nets and the sealing cloths respectively;
2) fixing the anchor nets and the sealing cloths on wall rock, wherein the inner anchor net and the inner sealing cloth are firstly fixed by means of the expansion bolts, and the outer anchor net and the outer sealing cloth are then fixed by means of the expansion bolts; it is ensured that the two sealing cloths are both located on the inner sides of the anchor nets close to the area to be filled during the fixing process;
3)laying an iron pipe as the pouring pipe for a fire preventing and extinguishing material, through the two holes reserved in the middle of the inner and outer anchor nets, the outer end of the pipe being opened or closed by means of a valve; and laying an iron pipe as the water drainage pipe, through the two holes reserved at the bottom of the inner and outer anchor nets, the outer end of the pipe being opened or closed by means of a valve;
4) preparing the raw materials to be filled, wherein the material slurry I and the material slurry II required for forming the filled body are prepared;
5) feeding the prepared raw material slurry I and raw material slurry II for the filled body into the filling device, uniformly mixing the material slurry I and the material slurry II, and injecting, by means of the grouting hole, the mixed slurry into the sealing cloths till the cavity defined by the sealing cloths is fully packed, the mixing ratio of the material slurry I and the material slurry II being 1:1;
6) determining the degree of packing of the cavity defined by the sealing cloths after packing; and
7) allowing the filled body to stand for solidification, thereby completing the construction of the wall.
[0013]
Advantageous Effect
According to the mine anti-explosion trapezoidal sealing wall and the construction method therefor of the present invention, an area to be filled is defined by means of the mine metal anchor nets and the sealing cloths, which eliminates the defects of poor safety and stability when the cavity is built by wood plates, eliminates the defects that plenty of time and efforts are required when the cavity is built by steel plates or bricks and stones, and eliminates the defects of difficulty in obtaining raw materials, being easily damaged, and a limited service life when air bladders are adopted. Moreover, the raw materials of the sealing wall are common underground objects in a coal mine; therefore, they can be obtained easily and the cost is low.
[0014] According to the mine anti-explosion trapezoidal sealing wall and the construction method therefor of the present invention, the side surface of the constructed sealing wall is in the shape of a right-angled trapezoid, with the inner side of the sealing wall being right angled, which makes full use of the advantage that a wall with a trapezoidal section has strong impact resistance capability, and further enhances the anti-explosion capability of the sealing wall.
[0015] According to the mine anti-explosion trapezoidal sealing wall and the construction method therefor of the present invention, the fed materials in the present invention always are fluids during transportation, which is more convenient than conventional materials such
as bricks and stones, steel plates, and wood plates in handling and transportation. In addition, the filled body that is formed by mixing the fed materials has strong impact resistance capability and buffering capability and achieves a better anti-explosion effect.
[0016] According to the mine anti-explosion trapezoidal sealing wall and the construction method therefor of the present invention, the cavity is formed by using anchor nets in the construction process, without the need to build inner and outer wall bodies, such that the construction time is short and the efficiency is high.
[0017]
[0018] FIG. 1 is a front view illustrating underground rapid formation of a sealing wall in a mine according to the present invention;
FIG. 2 is a perspective view illustrating arrangement of anchor nets and expansion bolts used in construction of a sealing wall according to the present invention;
FIG. 3 is a side sectional view along A-A in FIG. 1;
FIG. 4 is a side sectional view of a mixed material filling device along B-B in FIG. 3; and
[0019] FIG. 5 is a schematic perspective view of a sealing wall.
[0020] Taking a tunnel with an arched section as an example, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in the drawings, a mine anti-explosion trapezoidal sealing wall is shown, which is suitable for rapid construction of a sealing wall in the case of underground thermodynamic disasters of coal mines. The sealing wall mainly includes a grouting hole 4, metal anchor nets 5, sealing cloths 9, a filled body 10, iron wires 11, a pouring pipe 12, seal valves 13, a water drainage pipe 14, and expansion bolts 17.
[0021] The metal anchor nets 5 are anchor nets for mine support and the materials thereof
are easily available. The metal anchor nets 5 are fixed on wall rock 3 by means of the expansion bolts 17, and are connected to each other by means of the iron wires 11 to ensure stability. The expansion bolts are spaced from each other by 30 to 50 cm.
[0022] The sealing cloths 9 on the inner sides of the metal anchor nets are made of flame retardant fabric, and are connected to the anchor nets 5 by means of the iron wires 11, to prevent a slurry from flowing out through meshes of the metal anchor nets 5.
[0023] The filled 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, the material I consists of sulphoaluminate cement and a composite set-retarding dispersant, and the material II consists of other auxiliary materials such as lime, gypsum, and a composite setting accelerator. The two basic materials are fluids which are easy to transport. Also, a setting agent needs to be added.
[0024] The pouring pipe 12 is used to inject fire preventing and extinguishing materials such as mud, foam, and inert gases into a sealing area. The water drainage pipe 14 is provided at the bottom of the sealing wall, and used to release accumulated water from the sealing space in time. The side surface of the sealing wall is trapezoidal, thus providing a better anti explosion effect. The trapezoidal sealing wall has a top end of 0.5 to 1.5 m in width and a bottom end of 1.5 to 2 times wider than the top end, which specifically depend on the size of the tunnel section.
[0025] The expansion bolts 17 are used to fix the anchor nets and the sealing cloths, and include the following optional specifications: M16, M18, M20, M22, M24 and the like, ranging from 250 to 350 mm in length.
[0026] A construction method for the mine anti-explosion trapezoidal sealing wall, essentially consisting of a filling device 6, valves 7, a grouting pipe 8, flow meters 15, feed pipes 16, a stirrer 18, a grouting pump 19 and the like.
[0027] The construction process includes four parts: a preparation stage, a feeding stage, a filling stage, and a finishing stage.
[0028] In the preparation stage, the anchor nets 5 and the sealing cloths 9 are trimmed according to the shape and size of a tunnel section, and the length and the width of the anchor
nets 5 and the sealing cloths 9 are both about 0.8 to 1 m larger than the length and the width of the tunnel, where the additional parts are used for fixing the anchor nets 5 and the sealing cloths 9 by means of the expansion bolts 17. The anchor nets 5 and the sealing cloths 9 trimmed according to the specification of the tunnel are connected and fixed together by means of the iron wires 11. As shown in FIG. 1 and FIG. 5, the grouting hole 4, with a diameter of 8 to 12 cm, is provided near a roof1 at approximately the central positions on the upper parts of the outer anchor net 5 and the outer sealing cloth 9, and the grouting hole 4 is connected to the grouting pipe 8 for pouring a mixed slurry of the filled body. Holes, with a diameter of 10 to 15 cm, are provided at approximately the central positions in the middle of the inner and outer anchor nets 5 and the sealing cloths 9 respectively, and the holes are used to lay the pouring pipe 12. Holes, with a diameter of 8 to 12 cm, are provided at approximately the central positions on the bottom of the inner and outer anchor nets 5 and the sealing cloths 9 respectively, and the holes are used to lay the water drainage pipe 14. The mine metal anchor nets 5 are arranged on the inner and outer sides of an area to be filled, and are fixed by means of the expansion bolts 17. Corresponding edges and corners of the two anchor nets are connected by means of the iron wires 11, to prevent displacement of the anchor nets 5 during the filling process. Finally, an iron pipe as the pouring pipe 12 for a fire preventing and extinguishing material is laid through the two holes reserved in the middle of the inner and outer anchor nets, and the iron pipe is 50 to 100 cm longer than the distance between the two holes, and the outer end of the pipe is opened or closed by means of a valve. An iron pipe as the water drainage pipe 14 is laid through the two holes reserved at the bottom of the inner and outer anchor nets, and the iron pipe is 50 to 100 cm longer than the distance between the two holes, and the outer end of the pipe is opened or closed by means of a valve. The grouting pipe 8 is connected to the grouting hole 4, and is fixed by means of the iron wires.
[0029] In the feeding stage, the prepared basic materials I and II are fed into the filling device 6, while the flow ratio of the fed materials I and II is controlled to be 1:1 by means of the valves 7-2 and 7-3 and the flow meters 15.
[0030] In the filling stage, the filling device 6 is activated to stir and uniformly mix the materials in the filling device 6, and the mixed material is injected into the area to be filled. When the filled body 10 is about to reach the roof 1, the valve 7-1 is appropriately adjusted
to control the inflow speed of the slurry till the valve is closed. The feeding and filling stages should be carried out at the same time to prevent solidification of the fed materials in the filling device.
[0031] In the finishing stage, the filling device and others needs to be cleaned in time after filling to avoid blockage. After 15 to 20 minutes since the filling is completed, the solidification state of the filled body 10 is determined by means of hard substances like stones or expansion bolts. When the filled body 10 is well solidified, the outer anchor net 5 and the outer sealing cloth 9 may be removed for recycling, if necessary, or just stay where they are.
[0032] In the construction method for the mine anti-explosion trapezoidal sealing wall, the filling device 6 is a grouting machine capable of stirring and pouring, which has a stirrer and a grouting pump therein, and has two feed inlets I, II at the front end, each being connected to a feed pipe with a diameter of 8 to 12 cm. The valve 7-1 is placed after the filling device 6 and at the front end of the grouting pipe 8, and is used to control the inflow speed of the slurry.
[0033] The front-end feed pipes 16 are used to prepare a quick-setting slurry. The valves 7-2, 7-3 and the flow meters 15 are arranged on the ends of the feed pipes 16 close to the filling device 6, and are used to control the feeding speed of the materials. The pouring pipe 12 and the water drainage pipe 14 may be optionally provided, and they can be omitted in emergency situations.
[0034] According to the mine anti-explosion trapezoidal sealing wall of the present invention, the filling device is a grouting machine capable of stirring and pouring, which has two feed inlets at the front end and has a stirrer and a grouting pump therein. A valve is placed after the filling device and at the front end of the grouting pipe, and is used to control the inflow speed of the slurry. The filling time can be adjusted according to the water content and the addition amount of the setting agent. The pouring pipe and the water drainage pipe may be optionally provided, and they can be omitted in emergency situations.
Claims (2)
1. A construction method for a mine anti-explosion trapezoidal sealing wall comprising the
following steps:
1) trimming metal anchor nets and sealing cloths according to the shape and size of a tunnel
section, and connecting corresponding edges and corners of the sealing cloths and the
anchor nets by means of iron wires; providing a grouting hole used to inject a raw material
slurry for forming a filled body, at approximately the central positions on the upper parts of
the outer anchor net and the outer sealing cloth; providing holes used to lay a pouring pipe
for a fire preventing and extinguishing material, at approximately the central positions in
the middle of the inner and outer anchor nets and the sealing cloths respectively; and
providing holes used to lay a water drainage pipe, at approximately the central positions on
the bottom of the inner and outer anchor nets and the sealing cloths respectively;
2) fixing the anchor nets and the sealing cloths on wall rock, wherein the inner anchor net
and the inner sealing cloths are firstly fixed by means of expansion bolts, and the outer
anchor net and the outer sealing cloths are then fixed also by means of expansion bolts; it is
ensured that the two sealing cloths are both located on the inner sides of the anchor nets
close to the area to be filled during the fixing process;
3) laying an iron pipe as the pouring pipe forfire preventing and extinguishing material,
through the two holes reserved in the middle of the inner and outer anchor nets, the outer
end of the pouring pipe for a fire preventing and extinguishing material being opened or
closed by means of a valve; and laying an iron pipe as the water drainage pipe, through the
two holes reserved at the bottom of the inner and outer anchor nets, the outer end of the
water drainage pipe being opened or closed by means of a valve;
4) preparing the raw materials to be filled, wherein the material slurry I and the material
slurry II required for forming the filled body are prepared;
) feeding the prepared raw material slurry I and raw material slurry II for forming the filled
body into a filling device, uniformly mixing the material slurry I and the material slurry II,
and injecting, by means of the grouting hole, the mixed slurry into the sealing cloths till a
cavity defined by the sealing cloths is fully packed, the mixing ratio of the material slurry I
and the material slurry II being 1:1;
6) determining the degree of packing of the cavity defined by the sealing cloths after packing;
and
7) allowing the filled body to stand for solidification, thereby completing the construction
of the wall.
2. A mine anti-explosion trapezoidal sealing wall formed by the method of claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235679.8 | 2016-12-28 | ||
| CN201611235679.8A CN106837418B (en) | 2016-12-28 | 2016-12-28 | Mining explosion-proof trapezoidal sealing wall and construction method thereof |
| PCT/CN2017/110694 WO2018121107A1 (en) | 2016-12-28 | 2017-11-13 | Mine anti-explosion trapezoidal sealing wall and construction method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2017388776A1 AU2017388776A1 (en) | 2019-07-25 |
| AU2017388776B2 true AU2017388776B2 (en) | 2021-04-01 |
Family
ID=59112592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2017388776A Active AU2017388776B2 (en) | 2016-12-28 | 2017-11-13 | Mine anti-explosion trapezoidal sealing wall and construction method therefor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106837418B (en) |
| AU (1) | AU2017388776B2 (en) |
| WO (1) | WO2018121107A1 (en) |
Families Citing this family (6)
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103069110A (en) * | 2010-07-30 | 2013-04-24 | Fci特拉华控股有限公司 | Engineered mine seal |
| CN205135708U (en) * | 2015-11-13 | 2016-04-06 | 西安科技大学 | Novel withstand voltage fire seal in collecting space area |
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| 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 |
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- 2017-11-13 WO PCT/CN2017/110694 patent/WO2018121107A1/en active Application Filing
- 2017-11-13 AU AU2017388776A patent/AU2017388776B2/en active Active
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| CN103069110A (en) * | 2010-07-30 | 2013-04-24 | Fci特拉华控股有限公司 | Engineered mine seal |
| CN205135708U (en) * | 2015-11-13 | 2016-04-06 | 西安科技大学 | Novel withstand voltage fire seal in collecting space area |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017388776A1 (en) | 2019-07-25 |
| CN106837418A (en) | 2017-06-13 |
| CN106837418B (en) | 2020-12-22 |
| WO2018121107A1 (en) | 2018-07-05 |
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