CN103306719B - Coal mine underground drilling filling and reinforcing device and method - Google Patents
Coal mine underground drilling filling and reinforcing device and method Download PDFInfo
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- CN103306719B CN103306719B CN201310225817.4A CN201310225817A CN103306719B CN 103306719 B CN103306719 B CN 103306719B CN 201310225817 A CN201310225817 A CN 201310225817A CN 103306719 B CN103306719 B CN 103306719B
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- 238000011049 filling Methods 0.000 title claims abstract description 57
- 239000003245 coal Substances 0.000 title claims abstract description 35
- 238000005553 drilling Methods 0.000 title claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 76
- 239000011435 rock Substances 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 51
- 238000002156 mixing Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims description 60
- 238000007599 discharging Methods 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 29
- 239000011440 grout Substances 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 230000035611 feeding Effects 0.000 description 12
- 238000005065 mining Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 102000016938 Catalase Human genes 0.000 description 1
- 108010053835 Catalase Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a device and a method for reinforcing underground coal mine drilling filling, wherein the device comprises a water tank, a crushing filter, a cement tank, an auxiliary material tank, a premixing device, a mixing device, a slurry filter and a grouting pump; the device forms rock powder after passing through the crushing filter with the rock, forms the cementing material with the material in cement jar, the auxiliary material jar that the mixing arrangement will receive simultaneously, mixes and forms after the premixing is even and fills the reinforcement ground paste from crushing filter, premixing arrangement, water tank ratio receipt rock powder, cementing material and water, mixes and forms after the stirring and fills the reinforcement ground paste, later will fill the reinforcement ground paste and filter the back through the thick liquids filter, carry inside needing to fill reinforced drilling through the grouting pump. The device and the method provided by the invention can be used for directly crushing and screening rocks in a construction site, so that the transportation time and the material cost are saved, and meanwhile, the device has the advantages of simple integral structure, convenience in operation, low cost and wide practicability.
Description
Technical field
The present invention relates to a kind of coal mine down-hole drilling filling bracing means and method, the filling after adopting the release such as hydraulic slotted liner technique, hydraulic flushing in hole anti-reflection technology when being applicable to underground coal mine layer-through drilling or concordant boring is reinforced.
Background technology
The energy storage present situation of China is " rich coal, oil-poor, weak breath ", and coal mining occupies critical role in Chinese national economy development.But China's coal-mine gas geological conditions is very complicated, and wherein high gas layer accounts for 50%-70%, and low air permeability coal seam account for wherein about 70%.China's highly gassy mine or projecting mine have that gas extraction concentration is low, flow is little, the feature of weak effect, easily various Gas Disaster occur in mining process.When exploiting topping, Coal Seam Outburst Hazard is eliminated in the anti-reflection measures of release such as domestic coal mining enterprise many uses hydraulic slotted liner technique, hydraulic flushing in hole.Measure that this type of release is anti-reflection has discharged a large amount of coal body by boring, add the crack passage in coal seam, improve gas permeability of coal seam, but the cavity formed in coal seam causes coal body internal stress distribution uneven, cause later stage mining process supporting difficulty, seriously constrain the high efficient driving in tunnel and the safe working in coal seam.The destressing borehole that filling is reinforced in coal body can effectively address this problem.At present carry out the device category of filling for goaf more, but the professional equipment that relevant boring filling is reinforced rarely has report, develop coal mine down-hole drilling filling bracing means and method significant to improving mine safety production situation.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides simple, easy to operate, with low cost, the practical coal mine down-hole drilling filling bracing means of a kind of structure and method.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
Coal mine down-hole drilling filling bracing means, comprises water tank, broken strainer, cementing tank, auxiliary material tank, pre-mixing apparatus, mixing arrangement, slurries filtration device and grouting pump;
Described water tank is used for storage of water, and the bottom of described water tank is provided with delivery port;
Described broken strainer is used for fractured rock and filters, the rock dust multistage filtering net that the top of described broken strainer is provided with boulder cracker, middle part is provided with band rock dust ash gate, bottom are provided with rock dust storehouse, and the bottom in described rock dust storehouse is provided with rock dust discharging opening;
Described cementing tank is for storing cement, and the bottom of described cementing tank is provided with cement discharging opening;
Described auxiliary material tank is for storing auxiliary material, and the bottom of described auxiliary material tank is provided with auxiliary material discharging opening;
Described pre-mixing apparatus is for configuring cementitious matter, described pre-mixing apparatus is made up of premix blender and premix agitator, the bottom of pre-mixing apparatus is provided with cementitious matter discharging opening, and described cement discharging opening and auxiliary material discharging opening access the feeding mouth of pre-mixing apparatus each via pipeline;
Described mixing arrangement reinforces slip for configuring filling, described mixing arrangement is made up of mixer and agitator, be provided with filling in the bottom of mixing arrangement and reinforce stock discharge mouth, described delivery port, rock dust discharging opening and cementitious matter discharging opening are each via the feeding mouth of pipeline access mixing arrangement;
Described slurries filtration device is used for reinforcing slurry to filling and filters, the multistage filter screen of slurry that the top of described slurries filtration device is provided with slurry feed mouth, middle part is provided with band slurry ash gate, bottom are provided with stock discharge mouth, and described filling reinforces stock discharge mouth by pipeline access slurry feed mouth;
Described grouting pump is used for slip casting, and described grouting pump is provided with stock inlet and grout outlet, described stock discharge mouth accesses stock inlet by pipeline.
Preferably, the sidewall of described slurry filter is provided with liquid level window; The liquid level of slurry in slurry filter conveniently can be found out by liquid level window.
Preferably, described cement discharge outlet is provided with cementing tank valve, described auxiliary material discharge outlet is provided with auxiliary material tank valve, described water outlet is provided with Cistern valve, described rock dust discharge outlet is provided with rock dust valve, and described cementitious matter discharge outlet is provided with cementitious matter valve, and described filling is reinforced stock discharge mouth place and is provided with filling reinforcing slurry valve, described stock discharge mouth place is provided with slurry valve, and described grout outlet place is provided with pulp valve; The setting of valve conveniently can control raw material dosage.
Preferably, the connecting line between described delivery port and mixing arrangement is provided with flow meter; Can the accurate-metering water yield by flow meter.
Preferably, the aperture of described rock dust multistage filtering net from top to bottom filter screen reduces successively, and the minimum-value aperture of filter screen is not more than 4mm, and described rock dust ash gate is can opening and closing structure.
Preferably, the aperture of the multistage filter screen of described slurry from top to bottom filter screen reduces successively, and the minimum-value aperture of filter screen is not more than 8mm, and described slurry ash gate is can opening and closing structure.
A kind of coal mine down-hole drilling filling reinforcement means, after coal mine down-hole drilling has been constructed, has first carried out sealing of hole to boring, then the Grouting Pipe be embedded in boring has been connected to grout outlet, also comprised the steps:
(1) rock is put into broken strainer, first by catalase crusher machine, then by rock dust multistage filtering net filtration, filter residue is discharged by rock dust ash gate, and the rock dust that the particle diameter of formation is not more than 4mm is stored in rock dust storehouse;
(2) first enough water, cement, auxiliary material are stored in water tank, cementing tank and auxiliary material tank respectively, then open cement tank valve and auxiliary material tank valve, after cement and auxiliary material being sent into pre-mixing apparatus by proportioning, close cementing tank valve and auxiliary material tank valve; Premix blender mixes pan feeding, premix agitator stirs pan feeding, forms cementitious matter after mixing and stirring;
(3) open Cistern valve, rock dust valve and cementitious matter valve, after water, rock dust and cementitious matter being sent into mixing arrangement by proportioning, close Cistern valve, rock dust valve and cementitious matter valve; Blender mixes pan feeding, agitator stirs pan feeding, forms filling and reinforce slip after mixing and stirring;
(4) open fill reinforces slurry valve, filling is reinforced after slip all sends into slurries filtration device and closes filling reinforcing slurry valve; By the multistage strainer filtering of slurry, filter residue is discharged by slurry ash gate, and the slurry that the particle diameter of formation is not more than 8mm is stored in slurries filtration device;
(5) step (1) ~ (4) are repeated until the liquid level of the slurry observed through liquid level window reaches setting requirement;
(6) open slurry valve and pulp valve, open grouting pump, slurry is sent into boring by Grouting Pipe;
(7) when grouting pressure is greater than 2MPa, close grouting pump, the filling completing boring is reinforced, and closes pulp valve (36) afterwards, dismantles, cleans each equipment, arranges job site.。
Beneficial effect: coal mine down-hole drilling filling bracing means provided by the invention and method, can directly carry out fragmentation by job site rock and screen rock dust, save haulage time and the cost of raw material; Mixed by the secondary of pre-mixing apparatus, mixing arrangement, improve accuracy and the uniformity of material mixture ratio, ensure that the performance of material; By the classified filtering of the multistage filter screen of rock dust, the multistage filter screen of slip, realize the oarse-grained separation of material and eliminating, ensure that the property noted of material; Device overall structure is simple, easy to use, can realize the efficient filling of coal mine down-hole drilling and reinforce, more general filling reinforcement means cost reduction more than 50%; The method is simple, processing ease, practical, reliability is high, in coal mine down-hole drilling filling is reinforced, have practicality widely.
Accompanying drawing explanation
The structural representation that Fig. 1 is;
Fig. 2 is the structural representation of broken strainer;
Fig. 3 is the structural representation of slurries filtration device;
In figure: 1-water tank; The broken strainer of 2-; 3-cementing tank; 4-auxiliary material tank; 5-crushing engine; 6-rock dust ash gate; The multistage filter screen of 7-rock dust; 8-rock dust storehouse; 9-rock dust discharging opening; 10-rock dust valve; 11-delivery port; 12-Cistern valve; 13-flow meter; 14-cement discharging opening; 15-cementing tank valve; 16-auxiliary material discharging opening; 17-auxiliary material tank valve; 18-premix blender; 19-premix agitator; 20-cementitious matter discharging opening; 21-cementitious matter valve; 22-blender; 23-agitator; Stock discharge mouth is reinforced in 24-filling; Slurry valve is reinforced in 25-filling; 26-slurries filtration device; 27-slurry feed mouth; The multistage filter screen of 28-slurry; 29-slurry ash gate; 30-liquid level window; 31-stock discharge mouth; 32-slurry valve; 33-grouting pump; 34-stock inlet; 35-grout outlet; 36-pulp valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Be a kind of coal mine down-hole drilling filling bracing means as shown in Figure 1, Figure 2, Figure 3 shows, comprise water tank 1, broken strainer 2, cementing tank 3, auxiliary material tank 4, pre-mixing apparatus, mixing arrangement, slurries filtration device 26 and grouting pump 33; Be illustrated with regard to various piece below.
Described water tank 1 is for storage of water, and the bottom of described water tank 1 is provided with delivery port 11, and described delivery port 11 place is provided with Cistern valve 12.
Described broken strainer 2 is for fractured rock and filter, the rock dust multistage filtering net 7 that the top of described broken strainer 2 is provided with boulder cracker 5, middle part is provided with band rock dust ash gate 6, bottom are provided with rock dust storehouse 8, and the bottom in described rock dust storehouse 8 is provided with rock dust discharging opening 9; Described rock dust discharging opening 9 place is provided with rock dust valve 10.The aperture of described rock dust multistage filtering net 7 from top to bottom filter screen reduces successively, and the minimum-value aperture of filter screen is not more than 4mm, and described rock dust ash gate 6 is can opening and closing structure.
Described cementing tank 3 is for storing cement, and the bottom of described cementing tank 3 is provided with cement discharging opening 14; Described cement discharging opening 14 place is provided with cementing tank valve 15.
Described auxiliary material tank 4 is for storing auxiliary material, and the bottom of described auxiliary material tank 4 is provided with auxiliary material discharging opening 16; Described auxiliary material discharging opening 16 place is provided with auxiliary material tank valve 17.
Described pre-mixing apparatus is for configuring cementitious matter, and described pre-mixing apparatus is made up of premix blender 18 and premix agitator 19, and the bottom of pre-mixing apparatus is provided with cementitious matter discharging opening 20; Described cementitious matter discharging opening 20 place is provided with cementitious matter valve 21; Described cement discharging opening 14 and auxiliary material discharging opening 16 access the feeding mouth of pre-mixing apparatus each via pipeline.
Described mixing arrangement reinforces slip for configuring filling, and described mixing arrangement is made up of blender 22 and agitator 23, is provided with filling reinforces stock discharge mouth 24 in the bottom of mixing arrangement; Described filling is reinforced stock discharge mouth 24 place and is provided with filling reinforcing slurry valve 25; Described delivery port 11, rock dust discharging opening 9 and cementitious matter discharging opening 20, each via the feeding mouth of pipeline access mixing arrangement, the connecting line between described delivery port 11 and mixing arrangement are provided with flow meter 13.
Described slurries filtration device 26 filters for reinforcing slurry to filling, the multistage filter screen 28 of slurry that the top of described slurries filtration device 26 is provided with slurry feed mouth 27, middle part is provided with band slurry ash gate 29, bottom are provided with stock discharge mouth 31, sidewall are provided with liquid level window 30; Described stock discharge mouth 31 place is provided with slurry valve 32.The aperture of the multistage filter screen 28 of described slurry from top to bottom filter screen reduces successively, and the minimum-value aperture of filter screen is not more than 8mm, and described slurry ash gate 29 is can opening and closing structure; Described filling reinforces stock discharge mouth 24 by pipeline access slurry feed mouth 27.
Described grouting pump 33, for slip casting, described grouting pump 33 is provided with stock inlet 34 and grout outlet 35; Described grout outlet 35 place is provided with pulp valve 36; Described stock discharge mouth 31 is by pipeline access stock inlet 34.
A kind of coal mine down-hole drilling filling reinforcement means, by the rock dust that rock is not more than 4mm by forming particle diameter after broken strainer, simultaneously with cementing tank, material in auxiliary material tank that pre-mixing apparatus will receive, premix evenly forms cementitious matter afterwards, then mixing arrangement receives rock dust, cementitious matter and water in proportion from broken strainer, pre-mixing apparatus, water tank, mix and stir rear formation filling and reinforce slip, afterwards filling is reinforced slip after slurries filtration device filters, be transported to the bore inner needing filling to reinforce by grouting pump.Based on said apparatus, detailed description of the invention is as follows, after coal mine down-hole drilling has been constructed, first carries out sealing of hole to boring, then the Grouting Pipe be embedded in boring is connected to grout outlet 35, also comprised the steps:
(1) rock is put into broken strainer 2, first broken by boulder cracker 5, then filtered by rock dust multistage filtering net 7, filter residue is discharged by rock dust ash gate 6, and the rock dust that the particle diameter of formation is not more than 4mm is stored in rock dust storehouse 8;
(2) first enough water, cement, auxiliary material are stored in respectively in water tank 1, cementing tank 3 and auxiliary material tank 4, then open cement tank valve 15 and auxiliary material tank valve 17, after cement and auxiliary material being sent into pre-mixing apparatus by proportioning, close cementing tank valve 15 and auxiliary material tank valve 17; Premix blender 18 pairs of pan feedings mix, premix agitator 19 pairs of pan feedings stir, and form cementitious matter after mixing and stirring;
(3) open Cistern valve 12, rock dust valve 10 and cementitious matter valve 21, after water, rock dust and cementitious matter being sent into mixing arrangement by proportioning, close Cistern valve 12, rock dust valve 10 and cementitious matter valve 21; Blender 22 pairs of pan feedings mix, agitator 23 pairs of pan feedings stir, and form filling and reinforce slip after mixing and stirring;
(4) open fill reinforces slurry valve 25, filling is reinforced after slip all sends into slurries filtration device 26 and closes filling reinforcing slurry valve 25; Filtered by the multistage filter screen 28 of slurry, filter residue is discharged by slurry ash gate 29, and the slurry that the particle diameter of formation is not more than 8mm is stored in slurries filtration device 26;
(5) step (1) ~ (4) are repeated until the liquid level of the slurry observed through liquid level window 30 reaches setting requirement;
(6) open slurry valve 32 and pulp valve 36, open grouting pump 33, slurry is sent into boring by Grouting Pipe;
(7) when grouting pressure is greater than 2MPa, close grouting pump 33, the filling completing boring is reinforced, and closes pulp valve 36 afterwards.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. coal mine down-hole drilling filling bracing means, is characterized in that: comprise water tank (1), broken strainer (2), cementing tank (3), auxiliary material tank (4), pre-mixing apparatus, mixing arrangement, slurries filtration device (26) and grouting pump (33);
The bottom of described water tank (1) is provided with delivery port (11);
The rock dust multistage filtering net (7) that the top of described broken strainer (2) is provided with boulder cracker (5), middle part is provided with band rock dust ash gate (6), bottom are provided with rock dust storehouse (8), and the bottom of described rock dust storehouse (8) is provided with rock dust discharging opening (9);
The bottom of described cementing tank (3) is provided with cement discharging opening (14);
The bottom of described auxiliary material tank (4) is provided with auxiliary material discharging opening (16);
Described pre-mixing apparatus is made up of premix blender (18) and premix agitator (19), be provided with cementitious matter discharging opening (20) in the bottom of pre-mixing apparatus, described cement discharging opening (14) and auxiliary material discharging opening (16) access the feeding mouth of pre-mixing apparatus each via pipeline;
Described mixing arrangement is made up of blender (22) and agitator (23), be provided with filling in the bottom of mixing arrangement and reinforce stock discharge mouth (24), described delivery port (11), rock dust discharging opening (9) and cementitious matter discharging opening (20) are each via the feeding mouth of pipeline access mixing arrangement;
The multistage filter screen of slurry (28) that the top of described slurries filtration device (26) is provided with slurry feed mouth (27), middle part is provided with band slurry ash gate (29), bottom are provided with stock discharge mouth (31), and described filling reinforces stock discharge mouth (24) by pipeline access slurry feed mouth (27);
Described grouting pump (33) is provided with stock inlet (34) and grout outlet (35), described stock discharge mouth (31) accesses stock inlet (34) by pipeline.
2. coal mine down-hole drilling filling bracing means according to claim 1, it is characterized in that: described cement discharging opening (14) place is provided with cementing tank valve (15), described auxiliary material discharging opening (16) place is provided with auxiliary material tank valve (17), described delivery port (11) place is provided with Cistern valve (12), described rock dust discharging opening (9) place is provided with rock dust valve (10), described cementitious matter discharging opening (20) place is provided with cementitious matter valve (21), described filling is reinforced stock discharge mouth (24) place and is provided with filling reinforcing slurry valve (25), described stock discharge mouth (31) place is provided with slurry valve (32), described grout outlet (35) place is provided with pulp valve (36).
3. coal mine down-hole drilling filling bracing means according to claim 1, is characterized in that: the connecting line between described delivery port (11) and mixing arrangement is provided with flow meter (13).
4. coal mine down-hole drilling filling bracing means according to claim 1, it is characterized in that: the aperture of described rock dust multistage filtering net (7) from top to bottom filter screen reduces successively, and the minimum-value aperture of filter screen is not more than 4mm, described rock dust ash gate (6) is can opening and closing structure.
5. coal mine down-hole drilling filling bracing means according to claim 1, it is characterized in that: the aperture of the multistage filter screen of described slurry (28) from top to bottom filter screen reduces successively, and the minimum-value aperture of filter screen is not more than 8mm, described slurry ash gate (29) is can opening and closing structure.
6. a coal mine down-hole drilling filling reinforcement means, is characterized in that: after coal mine down-hole drilling has been constructed, first carries out sealing of hole to boring, then the Grouting Pipe be embedded in boring is connected to grout outlet (35), also comprises the steps:
1. rock is put into broken strainer (2), first broken by boulder cracker (5), filtered by rock dust multistage filtering net (7) again, filter residue is discharged by rock dust ash gate (6), and the rock dust that the particle diameter of formation is not more than 4mm is stored in rock dust storehouse (8);
2. first enough water, cement, auxiliary material are stored in respectively in water tank (1), cementing tank (3) and auxiliary material tank (4), then open cement tank valve (15) and auxiliary material tank valve (17), after cement and auxiliary material being sent into pre-mixing apparatus by proportioning, close cementing tank valve (15) and auxiliary material tank valve (17); Premix blender (18) mixes pan feeding, premix agitator (19) stirs pan feeding, forms cementitious matter after mixing and stirring;
3. open Cistern valve (12), rock dust valve (10) and cementitious matter valve (21), after water, rock dust and cementitious matter being sent into mixing arrangement by proportioning, close Cistern valve (12), rock dust valve (10) and cementitious matter valve (21); Blender (22) mixes pan feeding, agitator (23) stirs pan feeding, forms filling and reinforce slip after mixing and stirring;
4. open fill reinforce slurry valve (25), filling is reinforced slip all send into slurries filtration device (26) closes afterwards filling reinforcing slurry valve (25); Filtered by the multistage filter screen of slurry (28), filter residue is discharged by slurry ash gate (29), and the slurry that the particle diameter of formation is not more than 8mm is stored in slurries filtration device (26);
5. repeat step 1. ~ 4. until the liquid level of the slurry observed through liquid level window (30) reaches setting requirement;
6. open slurry valve (32) and pulp valve (36), open grouting pump (33), slurry is sent into boring by Grouting Pipe;
7. when grouting pressure is greater than 2MPa, close grouting pump (33), the filling completing boring is reinforced, and closes pulp valve (36) afterwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310225817.4A CN103306719B (en) | 2013-06-07 | 2013-06-07 | Coal mine underground drilling filling and reinforcing device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310225817.4A CN103306719B (en) | 2013-06-07 | 2013-06-07 | Coal mine underground drilling filling and reinforcing device and method |
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| CN103306719A CN103306719A (en) | 2013-09-18 |
| CN103306719B true CN103306719B (en) | 2015-05-20 |
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| CN103915029B (en) * | 2014-04-22 | 2016-01-20 | 西安科技大学 | A kind of Multi-stage stirring slurry filling model assay systems and method |
| CN104002382B (en) * | 2014-05-22 | 2016-06-22 | 贵州开磷集团股份有限公司 | A kind of ardealite filling in mine conveying engineering pulping process |
| CN104298265B (en) * | 2014-10-27 | 2015-07-08 | 山东科技大学 | Constant-pressure grouting-water supply pneumatic combined servo control system for test |
| CN104832211A (en) * | 2015-05-06 | 2015-08-12 | 辽宁工程技术大学 | Coal mine gob area filling system |
| CN105317396B (en) * | 2015-10-13 | 2018-04-17 | 山东大学 | Slurries mixing arrangement and its application method in a kind of surface grout injection drilling |
| CN107633678A (en) * | 2017-09-21 | 2018-01-26 | 卢如永 | A kind of road surface voice prompting device |
| CN109763829A (en) * | 2019-01-25 | 2019-05-17 | 北京瑞威世纪铁道工程有限公司 | Long cantilever horizontal jet grouting system |
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