CN108150196A - A kind of quick gunnite method of cement mortar and refractory gunning equipment - Google Patents
A kind of quick gunnite method of cement mortar and refractory gunning equipment Download PDFInfo
- Publication number
- CN108150196A CN108150196A CN201810066743.7A CN201810066743A CN108150196A CN 108150196 A CN108150196 A CN 108150196A CN 201810066743 A CN201810066743 A CN 201810066743A CN 108150196 A CN108150196 A CN 108150196A
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- Prior art keywords
- cement
- pulp
- piston high
- agitator
- quick
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Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000011083 cement mortar Substances 0.000 title claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 61
- 239000011440 grout Substances 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 239000003245 coal Substances 0.000 claims abstract description 12
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 4
- 239000010878 waste rock Substances 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011378 shotcrete Substances 0.000 description 3
- 201000010001 Silicosis Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to a kind of quick gunnite method of cement mortar and devices, belong to coal mine underground waste rock filling equipment technical field, and this method presses 1:Cement and water are put into be mixed in agitator by 0.8 weight ratio is made cement grout, then the vinal of cement weight 3 ‰ 5 ‰ and the waterglass of cement weight 5% 10% are added in cement grout, cement pulp fibres mixed liquor is made, finally cement pulp fibres mixed liquor is sprayed to tunnel top surface and side wall using piston high-density pump, injection pressure is 4 6Mpa, nozzle and tunnel top surface and side wall are by angle >=75 ° of spray plane, spouting velocity of the present invention is fast, save material, dust concentration of whitewashing is low, it is a kind of saving, efficiently, the novel spraying technique of environment-friendly type.
Description
Technical field
The present invention relates to colliery tunnel support technical fields, relate in particular to a kind of quick gunnite method of cement mortar and dress
It puts.
Background technology
After coal mine down-hole tunnel excavates, the equilibrium state of the tunnel top side original three-dimensional stress of country rock is broken, in order to
The stability of coal mine roadway is kept, country rock is avoided to occur being caving or excessive deformation, carry out supporting is typically necessary after tunnelling,
The support pattern of coal mine down-hole tunnel has：Suspension roof support, anchor pole bolting with wire mesh, the supporting of anchor pole anchor beam, anchor pole Bolt net and jet slurry supporting,
Plain gunite, arch stone arch camber supporting, the supporting of cast in place reinforced bar cement, U-shaped steel supporting, I-steel three save canopy supporting, bare support
(any support material is not added with after laneway molding).
Major part coal mine in China's is using anchor pole bolting with wire mesh, wherein anchor pole Bolt net and jet slurry support technology, anchor pole anchor net at present
Gunite can give full play to the effect of bolt action and concrete, and for a long time, underground shotcreting process is adopted more
With conventional dry or tidal gunnite method, this method high material consumption, rebound degree is high, and whitewashing dust concentration is high, is a kind of high consumption
Energy, the shotcreting process of high pollution.Since in recent years, and there is wet shotcrete method, but wet spraying process equipment is complicated, purchase cost
High, easy plugging, it is difficult safeguard, whitewashing efficiency it is low, constrain the popularization of wet spraying process at the construction field (site), a kind of low cost, high efficiency,
Low stain, self raising flour dirt novel spraying technique become the target that many enterprises seek always.
Invention content
For various deficiencies of the prior art, to solve the above-mentioned problems, it is proposed that a kind of spouting velocity is fast, saves material
The low quick gunnite method of cement mortar of material, whitewashing dust concentration and device.
To achieve the above object, the present invention provides following technical solution：
A kind of quick gunnite method of cement mortar, includes the following steps：
(1) cement grout is prepared：By cement and water according to 1:0.8 weight ratio, which is put into agitator, to be stirred；
(2) cement pulp fibres mixed liquor is prepared：Cement weight 3 ‰ -5 ‰ is added in the cement grout of above-mentioned steps (1)
Vinal, stir 15-20min, add the waterglass of cement weight 5%-10%, stirring is no more than 5min, system
Into cement pulp fibres mixed liquor；
(3) it is whitewashed using piston high-density pump：Agitator is connected in piston high-density pump, while reciprocating
Scuttlebutt is accessed in slush pump, cement pulp fibres mixed liquor is ejected by underground coal mine with wet type by the nozzle of piston high-density pump
On tunnel top surface and side wall, during injection, injection pressure is 4-6Mpa, nozzle and tunnel top surface and side wall by spray plane angle >=
75°。
Further, the speed of agitator of the agitator is 60-100r/min.
Further, the injection flow of the piston high-density pump is controlled in 5-6m3/h。
The present invention also provides a kind of quick refractory gunning equipment of cement mortar, including agitator, pulp-absorbing pipe, scuttlebutt, suction hose, three
Connectors, pulp-entering pipe, piston high-density pump, grout outlet and nozzle, the agitator are connected by pulp-absorbing pipe and three-way connector
It connects, the scuttlebutt is connect by suction hose with three-way connector, and the piston high-density pump is connect by pulp-entering pipe with threeway
Device connects, and the nozzle is connect by grout outlet with piston high-density pump.
Further, pulp-absorbing pipe shut-off valve is provided on the pulp-absorbing pipe, suction hose shut-off valve is provided on the suction hose.
Further, further include manual relief valve, pressure gauge and safety valve, the grout outlet of the piston high-density pump respectively with
Manual relief valve, pressure gauge are connected with safety valve.
The beneficial effects of the invention are as follows：
1st, the present invention effectively reduces the generation of dust, Gong Renke using underground coal mine Wet-type concrete shotcreting process
The operation under the mal-condition for having dust is avoided, reduces the occurrence probability of worker's silicosis.
2nd, the present invention adds in vinal in cement grout and waterglass is configured to cement pulp fibres mixed liquor, no
But the toughness of cement spray-up can be enhanced, and setting time can be shortened, reduce the rebound waste of cement grout.
3rd, the quick refractory gunning equipment of cement mortar of the invention is simple in structure, and buying processing cost is low, and flushing of pipeline is convenient, whitewashing
Process safety is reliable, and guniting bounding is low, effect is good.
Description of the drawings
Fig. 1 is the quick gunnite method flow chart of cement mortar of the present invention；
Fig. 2 is the quick refractory gunning equipment structure diagram of cement mortar of the present invention.
In attached drawing：1- agitators, 2- pulp-absorbing pipes, 3- scuttlebutts, 4- suction hoses, 5- three-way connectors, 6- pulp-entering pipes, 7-
Piston high-density pump, 8- grout outlets, 9- nozzles, 10- pulp-absorbing pipe shut-off valves, 11- suction hose shut-off valves, 12- relief valves, 13- pressures
Power table, 14- safety valves.
Specific embodiment
It is right with reference to the attached drawing of the present invention in order to which those skilled in the art is made to more fully understand technical scheme of the present invention
Technical scheme of the present invention carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist
The other similar embodiments obtained under the premise of not making creative work should all belong to the range of the application protection.
Embodiment one：
As shown in Figure 1, a kind of quick gunnite method of cement mortar, includes the following steps：
(1) cement grout is prepared, specifically, by cement and water according to 1:0.8 weight ratio, which is put into agitator, to be stirred
It mixes, the speed of agitator of the agitator is 60-100r/min；
(2) cement pulp fibres mixed liquor is prepared, specifically, cement weight is added in the cement grout of above-mentioned steps (1)
3 ‰ -5 ‰ vinal stirs 15-20min, adds the waterglass of cement weight 5%-10%, and stirring is no more than
Cement pulp fibres mixed liquor is made in 5min, and vinal is added in cement grout and waterglass is configured to cement mortar fibre
Mixed liquor is tieed up, is not only able to the toughness of enhancing cement spray-up, and setting time can be shortened, reduces the rebound wave of cement grout
Take；
(3) it is whitewashed, specifically, agitator is connected in piston high-density pump, simultaneously using piston high-density pump
Scuttlebutt is accessed in piston high-density pump, is ejected into cement pulp fibres mixed liquor with wet type by the nozzle of piston high-density pump
On coal mine down-hole tunnel top surface and side wall, during injection, injection pressure is 4-6Mpa, and nozzle is with tunnel top surface and side wall by spray plane
Angle >=75 °, the injection flow of the piston high-density pump are controlled in 5-6m3/ h, using Wet-type concrete shotcreting process, effectively
Ground reduces the generation of dust, and worker can avoid the operation under the mal-condition for having dust, reduce the generation of worker's silicosis
Probability.
The present embodiment also provides a kind of cement mortar quick refractory gunning equipment, as shown in Fig. 2, the device includes agitator 1, inhales
Pipe 2, scuttlebutt 3, suction hose 4, three-way connector 5, pulp-entering pipe 6, piston high-density pump 7, grout outlet 8 and nozzle 9 are starched, it is described to stir
It mixes bucket 1 to connect with three-way connector 5 by pulp-absorbing pipe 2, the scuttlebutt 3 is connect by suction hose 4 with three-way connector 5, institute
It states piston high-density pump 7 to connect with three-way connector 5 by pulp-entering pipe 6, the nozzle 9 passes through grout outlet 8 and reciprocating mud
7 connection of pump, for the ease of controlling inlet amount, is provided with pulp-absorbing pipe shut-off valve 10 on the pulp-absorbing pipe 2, is set on the suction hose 4
Suction hose shut-off valve 11 is equipped with, in addition, device further includes manual relief valve 12, pressure gauge 13 and safety valve 14, it is described reciprocating
The grout outlet of slush pump 7 is connect respectively with manual relief valve 12, pressure gauge 13 and safety valve 14, can ensure piston high-density pump
7 work safety, the apparatus structure is simple, and buying processing cost is low, and flushing of pipeline is convenient, and whitewashing process safety is reliable, whitewashing
Spring back that low, effect is good.
Embodiment two：
As shown in Figure 1, a kind of quick gunnite method of cement mortar, includes the following steps：
(1) cement grout is prepared, specifically, by cement and water according to 1:0.8 weight ratio, which is put into agitator, to be stirred
It mixes, the speed of agitator of the agitator is 80r/min；
(2) cement pulp fibres mixed liquor is prepared, specifically, cement weight is added in the cement grout of above-mentioned steps (1)
3 ‰ vinal stirs 15min, adds the waterglass of cement weight 5%, stirs 3min, cement pulp fibres are made
Mixed liquor；
(3) it is whitewashed, specifically, agitator is connected in piston high-density pump, simultaneously using piston high-density pump
Scuttlebutt is accessed in piston high-density pump, is ejected into cement pulp fibres mixed liquor with wet type by the nozzle of piston high-density pump
On coal mine down-hole tunnel top surface and side wall, during injection, injection pressure is 4Mpa, and nozzle is pressed from both sides with tunnel top surface and side wall by spray plane
Angle is 75 °, and the injection flow control of the piston high-density pump is 5m3/h。
Embodiment three：
As shown in Figure 1, a kind of quick gunnite method of cement mortar, includes the following steps：
(1) cement grout is prepared, specifically, by cement and water according to 1:0.8 weight ratio, which is put into agitator, to be stirred
It mixes, the speed of agitator of the agitator is 90r/min；
(2) cement pulp fibres mixed liquor is prepared, specifically, cement weight is added in the cement grout of above-mentioned steps (1)
4 ‰ vinal stirs 18min, adds the waterglass of cement weight 8%, stirs 4min, cement pulp fibres are made
Mixed liquor；
(3) it is whitewashed, specifically, agitator is connected in piston high-density pump, simultaneously using piston high-density pump
Scuttlebutt is accessed in piston high-density pump, is ejected into cement pulp fibres mixed liquor with wet type by the nozzle of piston high-density pump
On coal mine down-hole tunnel top surface and side wall, during injection, injection pressure is 5Mpa, and nozzle is pressed from both sides with tunnel top surface and side wall by spray plane
Angle is 80 °, and the injection flow control of the piston high-density pump is 5.5m3/h。
Example IV：
As shown in Figure 1, a kind of quick gunnite method of cement mortar, includes the following steps：
(1) cement grout is prepared, specifically, by cement and water according to 1:0.8 weight ratio, which is put into agitator, to be stirred
It mixes, the speed of agitator of the agitator is 100r/min；
(2) cement pulp fibres mixed liquor is prepared, specifically, cement weight is added in the cement grout of above-mentioned steps (1)
5 ‰ vinal stirs 20min, adds the waterglass of cement weight 10%, stirs 5min, and cement mortar fibre is made
Tie up mixed liquor；
(3) it is whitewashed, specifically, agitator is connected in piston high-density pump, simultaneously using piston high-density pump
Scuttlebutt is accessed in piston high-density pump, is ejected into cement pulp fibres mixed liquor with wet type by the nozzle of piston high-density pump
On coal mine down-hole tunnel top surface and side wall, during injection, injection pressure is 6Mpa, and nozzle is pressed from both sides with tunnel top surface and side wall by spray plane
Angle is 90 °, and the injection flow control of the piston high-density pump is 6m3/h。
The present invention is described in detail above, described above, only the preferred embodiments of the invention, when cannot
Limit the scope of the present invention, i.e., it is all to make equivalent changes and modifications according to the application range, it all should still belong to covering scope of the present invention
It is interior.
Claims (6)
1. a kind of quick gunnite method of cement mortar, it is characterised in that：Include the following steps：
(1) cement grout is prepared：By cement and water according to 1:0.8 weight ratio, which is put into agitator, to be stirred；
(2) cement pulp fibres mixed liquor is prepared：The poly- of cement weight 3 ‰ -5 ‰ is added in the cement grout of above-mentioned steps (1)
Alcohol fibers stir 15-20min, add the waterglass of cement weight 5%-10%, and stirring is no more than 5min, water is made
Mud fiber mixed liquor；
(3) it is whitewashed using piston high-density pump：Agitator is connected in piston high-density pump, while in reciprocating mud
Scuttlebutt is accessed in pump, cement pulp fibres mixed liquor is ejected by coal mine down-hole tunnel with wet type by the nozzle of piston high-density pump
On top surface and side wall, during injection, injection pressure is 4-6Mpa, and nozzle and tunnel top surface and side wall are by angle >=75 ° of spray plane.
2. a kind of quick gunnite method of cement mortar according to claim 1, it is characterised in that：The stirring of the agitator turns
Speed is 60-100r/min.
3. a kind of quick gunnite method of cement mortar according to claim 2, it is characterised in that：The piston high-density pump
Injection flow is controlled in 5-6m3/h。
4. a kind of quick refractory gunning equipment of cement mortar formed according to any methods of claim 1-3, it is characterised in that：Packet
Include agitator, pulp-absorbing pipe, scuttlebutt, suction hose, three-way connector, pulp-entering pipe, piston high-density pump, grout outlet and nozzle, institute
It states agitator to connect with three-way connector by pulp-absorbing pipe, the scuttlebutt is connect by suction hose with three-way connector, described
Piston high-density pump is connect by pulp-entering pipe with three-way connector, and the nozzle is connect by grout outlet with piston high-density pump.
5. a kind of refractory gunning equipment according to claim 4, it is characterised in that：Pulp-absorbing pipe cut-off is provided on the pulp-absorbing pipe
Valve is provided with suction hose shut-off valve on the suction hose.
6. a kind of refractory gunning equipment according to claim 5, it is characterised in that：Further include manual relief valve, pressure gauge and peace
Full valve, the grout outlet of the piston high-density pump are connect respectively with manual relief valve, pressure gauge and safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066743.7A CN108150196A (en) | 2018-01-24 | 2018-01-24 | A kind of quick gunnite method of cement mortar and refractory gunning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066743.7A CN108150196A (en) | 2018-01-24 | 2018-01-24 | A kind of quick gunnite method of cement mortar and refractory gunning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150196A true CN108150196A (en) | 2018-06-12 |
Family
ID=62458910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810066743.7A Pending CN108150196A (en) | 2018-01-24 | 2018-01-24 | A kind of quick gunnite method of cement mortar and refractory gunning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108150196A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732776A (en) * | 2019-02-01 | 2019-05-10 | 泰安泰烁岩层控制科技有限公司 | A kind of high-consistency cement grout spray equipment |
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| CN104632252A (en) * | 2015-01-09 | 2015-05-20 | 广州鑫桥建筑劳务有限公司 | Automatic grouting system |
| CN104912592A (en) * | 2015-06-17 | 2015-09-16 | 山东科技大学 | Goaf fast grouting system |
| CN104989424A (en) * | 2015-06-17 | 2015-10-21 | 山东科技大学 | Grouting technology of goaf quick grouting system |
-
2018
- 2018-01-24 CN CN201810066743.7A patent/CN108150196A/en active Pending
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|---|---|---|---|---|
| CN101624826A (en) * | 2009-07-28 | 2010-01-13 | 沈阳市利千水利技术开发有限责任公司 | Construction method of gunite concrete |
| CN103953365A (en) * | 2014-05-20 | 2014-07-30 | 中铁四局集团有限公司 | Tunnel single-liquid and double-liquid alternate grouting reinforcement process and device |
| CN104632252A (en) * | 2015-01-09 | 2015-05-20 | 广州鑫桥建筑劳务有限公司 | Automatic grouting system |
| CN104912592A (en) * | 2015-06-17 | 2015-09-16 | 山东科技大学 | Goaf fast grouting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109732776A (en) * | 2019-02-01 | 2019-05-10 | 泰安泰烁岩层控制科技有限公司 | A kind of high-consistency cement grout spray equipment |
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Application publication date: 20180612 |