CN114608397A - Device for preventing sprayed concrete from gushing water and freezing on hole wall and using method - Google Patents
Device for preventing sprayed concrete from gushing water and freezing on hole wall and using method Download PDFInfo
- Publication number
- CN114608397A CN114608397A CN202210404790.4A CN202210404790A CN114608397A CN 114608397 A CN114608397 A CN 114608397A CN 202210404790 A CN202210404790 A CN 202210404790A CN 114608397 A CN114608397 A CN 114608397A
- Authority
- CN
- China
- Prior art keywords
- water
- hole
- concrete
- blast hole
- lifting
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention provides a device for preventing water burst and freezing of a sprayed concrete hole wall and a using method thereof. The water-cement ratio and the early-strength concrete antifreezing agent mixing amount can be adjusted according to the environmental temperature and the water gushing condition, and concrete with different thicknesses is sprayed to quickly seal the water gushing hole wall so as to achieve the effect of inhibiting water gushing and freezing of blast holes, so that secondary punching is avoided.
Description
Technical Field
The invention relates to the technical field of open-air deep hole blasting engineering, in particular to a device for preventing water burst and freezing of a sprayed concrete hole wall and a using method thereof.
Background
In the deep hole blasting process of the open pit mine, because mountain groundwater is abundant, during drilling operation, the groundwater gushes into blast holes to change into water holes, and the water holes are frozen into ice holes. At this time, the powder cannot be charged normally, secondary punching is needed, so that the production efficiency is reduced, the project progress is delayed, and a part of economic expenditure is increased for the ore enterprises. Sometimes influenced by other factors, causing the blast hole to freeze into an ice hole again before charging, at which time the operation will be re-perforated. In conclusion, the problem of water burst and freezing of blast holes in alpine regions in plateaus seriously affects the production efficiency, and brings unnecessary economic expenditure for mine enterprises.
At present, China has a lot of documents on how to solve the problem that water holes of strip mines influence the blasting effect, and almost no research on the problem of water burst and freezing of blast holes of strip mines in alpine regions of plateau exists. The technical scheme adopted by the mine enterprises is as follows: coal heating or electric heating method is carried out in a to-be-exploded area, the blast hole is continuously watered by hot water for 24 hours, manual ice drilling is carried out, and secondary hole drilling is carried out by a drilling machine. But due to the influence of high and cold conditions, secondary punching is adopted, the punching equipment needs to be preheated in advance before operation, otherwise, the punching equipment is flamed out for a long time and is difficult to start normally; when the ice is dug manually, workers are easy to feel tired in an extremely cold state, and potential safety hazards are brought to blasting construction; and other blast hole heating methods have low efficiency and high energy consumption and are not economical. Therefore, the current scheme is extremely low in efficiency, has great potential safety hazards and cannot well solve the problem of water burst freezing of blast holes. In view of the above, there is a need for a device for preventing water burst and freezing in a hole wall of a blast hole and a method for using the same, which can quickly inhibit water burst and freezing in a water hole in a severe cold area by spraying early-strength anti-freezing concrete on the hole wall of the blast hole without secondary perforation, thereby improving production efficiency, accelerating engineering progress and reducing blasting cost expenditure of a mine enterprise.
Disclosure of Invention
In order to overcome the defects in the background art, the invention provides a device for preventing water burst and freezing of a sprayed concrete hole wall and a using method thereof, and solves the problem that the construction efficiency and the engineering progress are influenced by the water burst and freezing of blast holes in high and cold areas.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a sprayed concrete prevents pore wall freezing device that gushes water, including concrete sprayer, the conveying pipeline, a water pipe, three nozzles, pressure boost water conveyor, pressure-operated water pumping device, hoisting device and big gun hole heat preservation lid, pressure boost water conveyor leads water mouthful with three nozzles ring and links to each other through the water pipe, three nozzles pass through the conveying pipeline and link to each other with concrete sprayer, hoisting device passes through rotary cavity and links to each other with three nozzles, pressure-operated water pumping device is used for clearing the groundwater that gushes out in the big gun hole, big gun hole heat preservation lid is used for covering and keeps warm in the big gun hole top.
The concrete sprayer is an explosion-proof concrete dry sprayer, and the maximum particle size of aggregate used is not more than 10 mm.
The conveying pipeline is made of cold-resistant plastic.
The three-nozzle spray head comprises a mixing cavity, a rotating disc is arranged on the outer wall of the upper end of the mixing cavity, grooves are formed in the upper portion and the lower portion of the edge of the rotating disc, and steel balls are arranged in the grooves; the upper part of the outer wall of the mixing cavity is provided with a water ring water guide port connected with a water pipe, the upper end of the mixing cavity is provided with a feeding port connected with a material conveying pipeline, the upper part of the outer wall of the mixing cavity is also provided with a spray head rotating gear, and the lower parts of the three-nozzle spray heads are nozzles.
The three nozzles are included, the included angle of each nozzle is 120 degrees, the connecting position of the mixing cavity and the nozzle is of an arc structure, and the nozzles are conical nozzles.
The lifting device comprises lifting rods, a rotating cavity, a speed reduction motor and a forward and reverse rotating motor, wherein one side of each lifting rod is of a rack structure, the upper ends of the two lifting rods are fixed through a cross rod, the inner sides of the two lifting rods are in transmission connection with the speed reduction motor through racks, and a material conveying pipeline can be placed in the middle of the two lifting rods; the rotary cavity is fixed at the lower end of the lifting rod; the rotating cavity is wrapped outside the rotating disc of the three-nozzle spray head and is connected with the rotating disc in a sliding way through steel balls in the grooves of the rotating disc; the positive and negative rotation motor is fixed on the lifting rod and is meshed with the nozzle rotating gear of the three-nozzle through the transmission gear.
The lifting rod and the rotating cavity are made of cold-resistant tensile alloy materials.
Two lifting rods are solid structures, the uppermost ends of the two lifting rods are connected by a cross rod made of alloy with the same material, the lifting rods are locked in the horizontal direction and cannot move, the movement in the vertical direction is controlled by a speed reduction motor, the speed reduction motor is connected with a transmission shaft, and the transmission shaft is provided with two transmission gears connected with racks on the lifting rods.
The blast hole heat-insulating cover is made of a circular truncated cone type plastic foam material, and is narrow at the bottom and wide at the top.
A use method of a device for preventing water burst and freezing on a hole wall of sprayed concrete comprises the following steps:
1) acquiring the temperature in the hole and the water burst situation of the mine blast hole, wherein the water depth in the blast hole and the shallowest water burst position of the blast hole are included;
2) determining the thickness of sprayed concrete according to the temperature in the hole and the water gushing condition;
3) connecting an air compressor with a pneumatic water pumping device through a pipeline, adjusting the air pressure according to the hole depth and the water depth in the blast hole, putting a pneumatic water draining device into the blast hole, draining the underground water gushing out of the blast hole by using the pneumatic water draining device, and taking out the pneumatic water draining device;
4) connecting an air compressor with a concrete sprayer and a pressurized water conveying device through pipelines, checking the whole device for preventing the sprayed concrete from gushing water and freezing the water, placing a three-nozzle spray head with a material conveying pipeline at the position above the center of a blast hole by using a lifting device after the checking is finished, starting a speed reducing motor, and putting the three-nozzle spray head to the bottom of the blast hole;
5) adjusting the mixing amount of the concrete early-strength antifreezing agent according to the water-cement ratio and the temperature condition in the hole, uniformly stirring the concrete early-strength antifreezing agent, cement and aggregate, starting an air compressor, adjusting the no-load wind pressure according to the conveying distance, starting a pressurized water conveying device, and finally starting a concrete sprayer to spray;
6) slowly lifting the three-nozzle spray head through a lifting device, continuously adjusting the air pressure and the water pressure according to the water-cement ratio and the conveying distance, and gradually increasing the air pressure to be more than or equal to 0.3Mpa and the water pressure to be more than or equal to 0.4Mpa along with the lifting of the three-nozzle spray head to the shallowest water gushing position of the blast hole;
7) after the guniting is finished, closing the concrete sprayer, closing the pressurized water conveying device after the materials in the conveying pipeline are completely sprayed, finally closing the air compressor, and taking out the three-nozzle spray head by utilizing the lifting device;
8) and arranging a blast hole heat-insulating cover above the blast hole according to the diameter of the blast hole.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a device for preventing water burst and freezing of a sprayed concrete hole wall and a using method thereof, which can adjust the water-cement ratio and the early-strength anti-freezing agent mixing amount of concrete according to the environmental temperature and the water burst condition, and spray concrete with different thicknesses to quickly seal the water burst hole wall so as to achieve the effect of inhibiting water burst and freezing of a blast hole, avoid secondary punching, have simple and convenient using method, save time and labor, greatly improve the construction efficiency and reduce the blasting cost.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a device for preventing water from flowing into the hole wall and freezing by spraying concrete;
FIG. 2 is a schematic structural view of the pneumatic water pumping device of the present invention;
FIG. 3 is a schematic structural view of a three-nozzle spray head of the present invention;
FIG. 4 is a partial cross-sectional view of the lifting device of the present invention;
fig. 5 is an enlarged view of a lift lever transmission structure of the lifting device of the present invention.
In the figure: 1-a concrete sprayer; 2-a material conveying pipeline; 3-a water pipe; 4-three nozzle spray heads; 5-a pressurized water delivery device; 6-air compressor; 7-a pneumatic water pumping device; 8-a lifting device; 9-blast hole heat preservation cover; 10-water ring water guide port; 11-a rotating cavity; 12-a rotating disc; 13-a groove; 14-steel balls; 15-a mixing chamber; 16-a feeding port; 17-a nozzle rotating gear; 18-a nozzle; 19-a lifting bar; 20-a rack; 21-a positive and negative rotation motor; 22-a reduction motor; 23-a drive shaft; 24-drive gear 25-crossbar.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1-5, a device for preventing water burst and freezing on a sprayed concrete hole wall comprises a concrete sprayer 1, a material conveying pipeline 2, a water pipe 3, three-nozzle spray heads 4, a pressurized water conveying device 5, an air compressor 6, a compressed air type water pumping device 7, a lifting device 8 and a blast hole heat-insulating cover 9, wherein the pressurized water conveying device 5 is connected with a water feeding ring water guide opening 10 of the three-nozzle spray heads 4 through the water pipe 3, the three-nozzle spray heads 4 are connected with the concrete sprayer 1 through the material conveying pipeline 2, and the lifting device 8 is connected with the three-nozzle spray heads 11 through a rotating cavity. The air-compression type water pumping device 5 is connected with the air compressor 6 and used for completely draining underground water gushed from the blast hole, and the blast hole heat-insulation cover 9 is used for covering the upper part of the blast hole to insulate the heat in the blast hole.
The concrete sprayer 1 is an explosion-proof concrete dry sprayer, and the maximum particle size of aggregate used is not more than 10 mm.
The material conveying pipeline 2 is made of cold-resistant plastic, and the inner diameter of the pipeline in the embodiment is 55 mm.
The three-nozzle spray head 4 comprises a mixing chamber 15, the outer wall of the upper end of the mixing chamber 15 is a rotating disk 12, grooves 13 are formed in the upper portion and the lower portion of the edge of the rotating disk 12, steel balls 14 are arranged in the grooves 13, the mixing chamber 15 is arranged below the rotating disk 12, a water ring water guide opening 10 connected with a water pipe 3 and a feeding opening 16 connected with a material conveying pipeline 2 are arranged on the upper portion of the mixing chamber 15, a spray head rotating gear 17 is arranged on the outer wall of the upper portion of the mixing chamber, three nozzles 18 are arranged on the lower portion of the three-nozzle spray head 4, included angles of the three nozzles 18 are 120 degrees respectively, the connecting position of the mixing chamber 15 and the nozzles 18 is of an arc-shaped structure, and the nozzles 18 are conical pipe openings.
Lifting device 8 includes lift bar 19, rotatory chamber 11, gear motor 22 and positive reverse motor 21, lift bar 19 one side is the rack 20 structure, lift bar 19 lower extreme is rotatory chamber 11, lift bar 19 and rotatory chamber 11 are cold-resistant tensile alloy material, two lift bars 19 are solid construction, defeated material pipeline 2 and water pipe 3 can be put to two lift bar 19 intermediate positions, one of them lift bar 19 is connected with positive reverse motor 21, through the meshing of drive gear and the shower nozzle rotary gear 17 of three mouth shower nozzles 4. The rotating cavity 11 is wrapped outside a rotating disc 12 of the three-nozzle spray head 4 and is connected in a sliding manner through steel balls 14 in a groove 13 of the rotating disc 12; the uppermost ends of the two lifting rods 19 are connected with a cross rod 25 made of alloy with the same material, the lifting rods 19 are locked in the horizontal direction and cannot move, the movement in the vertical direction is controlled by a speed reducing motor 22, the speed reducing motor 22 is connected with a transmission shaft 23, and two transmission gears 24 connected with the racks 20 on the lifting rods 19 are arranged on the transmission shaft 23.
The blast hole heat preservation cover 9 is made of a circular truncated cone type plastic foam material, is narrow at the lower part and wide at the upper part, and has the thickness of 300 mm.
A use method of a device for preventing water burst and freezing on a hole wall of sprayed concrete comprises the following steps:
1) and (4) acquiring the temperature in the hole and the water burst condition of the mine blast hole (the water depth in the blast hole and the shallowest water burst position of the blast hole).
2) And determining the thickness of the sprayed concrete to be 20-30 mm according to the temperature in the hole and the water gushing condition.
3) The air compressor 6 is connected with the air-compression type water pumping device 7 through a pipeline, the air pressure is adjusted according to the hole depth and the water depth in the blast hole, the air-compression type water draining device 7 is placed in the blast hole, underground water gushed from the blast hole is drained by the air-compression type water draining device 7, and the air-compression type water draining device 7 is taken out.
4) The air compressor 6 is connected with the concrete sprayer 1 and the pressurized water conveying device 5 through pipelines, the whole device for preventing the sprayed concrete from gushing water and freezing is checked, the three-nozzle sprayer 4 with the material conveying pipeline 2 is placed above the center of the blast hole by the aid of the lifting device 8 after the checking is finished, the speed reducing motor 22 is started, and the three-nozzle sprayer 4 is placed to the bottom of the blast hole.
5) According to the conditions of water-cement ratio, temperature in a hole and the like, the mixing amount of the concrete early-strength antifreezing agent is adjusted, the concrete early-strength antifreezing agent is uniformly mixed with cement and aggregate, the air compressor 6 is started firstly, no-load air pressure is adjusted according to the conveying distance, the pressurized water conveying device 5 is started, and finally the concrete sprayer 1 is started to spray.
6) Slowly promote three mouth shower nozzles 4 through hoisting device 8, constantly adjust wind pressure, water pressure according to water-cement ratio and delivery distance, along with three mouth shower nozzles 4 rise to the shallowest position of gushing water of big gun hole, the wind pressure increases gradually to 0.3Mpa, water pressure increases gradually to 0.4 Mpa.
7) And after the guniting is finished, closing the concrete sprayer 1, closing the pressurized water conveying device 5 after the materials in the conveying pipeline 2 are sprayed to the full, finally closing the air compressor 6, and taking out the three-nozzle spray head 4 by utilizing the lifting device 8.
8) And arranging a blast hole heat-insulating cover 9 above the blast hole according to the diameter of the blast hole.
Example 1:
the rock mass is quartz schist or mixed rock, the rock firmness coefficient is F is 8-12, the step deep hole blasting is adopted, the aperture phi is 250mm, the hole pitch a is 9m, the row pitch b is 5.8m, the hole depth L is 15m, the filling height L2 is 5.8m, the chassis resistance line W1 is 6m, the concrete conveying distance is 2 m-17 m, and the water-cement ratio is 0.25.
The specific process comprises the following implementation steps:
1) the temperature in the hole is collected to be-5 ℃ and the water burst condition of the blast hole of the mine (the water depth in the blast hole is 4m, and the shallowest water burst position of the blast hole is 2m below the orifice).
2) And determining the thickness of the sprayed concrete to be 22mm according to the temperature in the hole and the water gushing condition.
3) The air compressor 6 is connected with the air compression type water pumping device 7 through a pipeline, the air pressure is adjusted to be 0.3Mpa according to the hole depth and the water depth in the blast hole, the air compression type water draining device 7 is placed at the bottom of the blast hole, the underground water gushing out from the blast hole is drained by the air compression type water draining device 7, and the air compression type water draining device 7 is taken out.
4) The air compressor 6 is connected with the concrete sprayer 1 and the pressurized water conveying device 5 through pipelines, the whole device for preventing the sprayed concrete from gushing water and freezing is checked, the three-nozzle sprayer 4 with the material conveying pipeline 2 is placed above the center of the blast hole by the aid of the lifting device 8 after the checking is finished, the speed reducing motor 22 is started, and the three-nozzle sprayer 4 is placed to the bottom of the blast hole.
5) According to the conditions of water-cement ratio, temperature in a hole and the like, the mixing amount of the concrete early-strength antifreezing agent is adjusted to be 5%, the concrete early-strength antifreezing agent, cement and aggregate are uniformly stirred, an air compressor 6 is started firstly, no-load wind pressure is adjusted to be 0.05Mpa according to the conveying distance, a pressurized water conveying device 5 is started, and finally a concrete sprayer 1 is started to spray.
6) Promote three mouth shower nozzles 4 slowly through hoisting device 8, constantly adjust wind pressure, water pressure according to water-cement ratio and delivery distance, along with three mouth shower nozzles 4 rise to 2m position below the drill way, the wind pressure increases gradually to 0.3Mpa, water pressure increases gradually to 0.4 Mpa.
7) And after the guniting is finished, closing the concrete sprayer 1, closing the pressurized water conveying device 5 after the materials in the conveying pipeline 2 are sprayed to the full, finally closing the air compressor 6, and taking out the three-nozzle spray head 4 by utilizing the lifting device 8.
8) And arranging a blast hole heat-insulating cover 9 above the blast hole according to the diameter of the blast hole.
Example 2:
the rock mass is flash-long porphyrite, the rock firmness coefficient is F & ltequal to 10, pre-splitting blasting is adopted, the aperture phi is 150mm, the hole distance a is 1.5m, the hole depth L is 17m, and the packing height L is22.5m, chassis resistance wire W1The concrete conveying distance is 2-19 m and the water cement ratio is 0.25, which is 3.6 m.
The specific process comprises the following steps:
1) the temperature in the hole is collected to be-10 ℃ and the water burst condition of the blast hole of the mine (the water depth in the blast hole is 5m, and the shallowest water burst position of the blast hole is 3m below the orifice).
2) And determining the thickness of the sprayed concrete to be 24mm according to the temperature in the hole and the water gushing condition.
3) The air compressor 6 is connected with the air compression type water pumping device 7 through a pipeline, the air pressure is adjusted to be 0.33Mpa according to the hole depth and the water depth in the blast hole, the air compression type water draining device 7 is placed at the bottom of the blast hole, the underground water gushing out from the blast hole is drained by the air compression type water draining device 7, and the air compression type water draining device 7 is taken out.
4) The air compressor 6 is connected with the concrete sprayer 1 and the pressurized water conveying device 5 through pipelines, the whole device for preventing the sprayed concrete from gushing water and freezing is checked, the three-nozzle sprayer 4 with the material conveying pipeline 2 is placed above the center of the blast hole by the aid of the lifting device 8 after the checking is finished, the speed reducing motor 22 is started, and the three-nozzle sprayer 4 is placed to the bottom of the blast hole.
5) According to the conditions of water-cement ratio, temperature in a hole and the like, the mixing amount of the concrete early-strength antifreezing agent is adjusted to be 6%, the concrete early-strength antifreezing agent, cement and aggregate are uniformly stirred, the air compressor 6 is started, the no-load air pressure is adjusted to be 0.06MPa according to the conveying distance, the pressurized water conveying device 5 is started, and finally the concrete sprayer 1 is started to spray.
6) Promote three mouth shower nozzles 4 slowly through hoisting device 8, constantly adjust wind pressure, water pressure according to water-cement ratio and delivery distance, along with three mouth shower nozzles 4 rise to 3m position below the drill way, the wind pressure increases gradually to 0.3Mpa, water pressure increases gradually to 0.4 Mpa.
7) And after the guniting is finished, closing the concrete sprayer 1, closing the pressurized water conveying device 5 after the materials in the conveying pipeline 2 are sprayed to the full, finally closing the air compressor 6, and taking out the three-nozzle spray head 4 by utilizing the lifting device 8.
8) And arranging a blast hole heat-insulating cover 9 above the blast hole according to the diameter of the blast hole.
Example 3:
the rock mass is flash rock, its rock firmness coefficient is F10-12, and it adopts stepped deep-hole blasting, its bore diameter is 310mm, hole spacing a is 7.5m, row spacing b is 5.8m, hole depth L is 18m, filling height L is 126m, chassis resistance wire W17.2m, the concrete conveying distance is 2 m-20 m, and the water-cement ratio is 0.25.
The specific process comprises the following steps:
1) the temperature in the hole is collected to be-15 ℃ and the water burst condition of the blast hole of the mine (the water depth in the blast hole is 6m, and the shallowest water burst position of the blast hole is 4m below the orifice).
2) And determining the thickness of the sprayed concrete to be 26mm according to the temperature in the hole and the water gushing condition.
3) The air compressor 6 is connected with the air compression type water pumping device 7 through a pipeline, the air pressure is adjusted to be 0.35Mpa according to the hole depth and the water depth in the blast hole, the air compression type water draining device 7 is placed at the bottom of the blast hole, the underground water gushing out from the blast hole is drained through the air compression type water draining device 7, and the air compression type water draining device 7 is taken out.
4) The air compressor 6 is connected with the concrete sprayer 1 and the pressurized water conveying device 5 through pipelines, the whole device for preventing the sprayed concrete from gushing water and freezing is checked, the three-nozzle sprayer 4 with the material conveying pipeline 2 is placed above the center of the blast hole by the aid of the lifting device 8 after the checking is finished, the speed reducing motor 22 is started, and the three-nozzle sprayer 4 is placed to the bottom of the blast hole.
5) According to the conditions of water-cement ratio, temperature in a hole and the like, the mixing amount of the concrete early-strength antifreezing agent is adjusted to be 7%, the concrete early-strength antifreezing agent is uniformly mixed with cement and aggregate, an air compressor 6 is started firstly, no-load wind pressure is adjusted to be 0.07Mpa according to the conveying distance, a pressurized water conveying device 5 is started, and finally a concrete sprayer 1 is started to spray.
6) Promote three mouth shower nozzles 4 slowly through hoisting device 8, constantly adjust wind pressure, water pressure according to water-cement ratio and delivery distance, along with three mouth shower nozzles 4 rise to 4m positions in drill way below, the wind pressure increases gradually to 0.3Mpa, water pressure increases gradually to 0.4 Mpa.
7) And after the guniting is finished, closing the concrete sprayer 1, closing the pressurized water conveying device 5 after the materials in the conveying pipeline 2 are sprayed to the full, finally closing the air compressor 6, and taking out the three-nozzle spray head 4 by utilizing the lifting device 8.
8) And arranging a blast hole heat-insulating cover 9 above the blast hole according to the diameter of the blast hole.
Example 4:
the rock mass is mixed rock, the rock firmness coefficient is F-8-10, the step deep hole blasting is adopted, the aperture phi is 350mm, the hole distance a is 9m, the row distance b is 8m, the hole depth L is 20m, and the filling height L is27m, chassis resistance wire W1The concrete conveying distance is 2 m-22 m, and the water cement ratio is 0.25.
The specific process comprises the following steps:
1) the temperature in the hole is collected to be-20 ℃ and the water burst condition of the blast hole of the mine (the water depth in the blast hole is 7m, and the shallowest water burst position of the blast hole is 5m below the orifice).
2) And determining the thickness of the sprayed concrete to be 28mm according to the temperature in the hole and the water gushing condition.
3) The air compressor 6 is connected with the air compression type water pumping device 7 through a pipeline, the air pressure is adjusted to be 0.37Mpa according to the hole depth and the water depth in the blast hole, the air compression type water draining device 7 is placed at the bottom of the blast hole, the underground water gushing out from the blast hole is drained by the air compression type water draining device 7, and the air compression type water draining device 7 is taken out.
4) The air compressor 6 is connected with the concrete sprayer 1 and the pressurized water conveying device 5 through pipelines, the whole device for preventing the sprayed concrete from gushing water and freezing is checked, the three-nozzle sprayer 4 with the material conveying pipeline 2 is placed above the center of the blast hole by the aid of the lifting device 8 after the checking is finished, the speed reducing motor 22 is started, and the three-nozzle sprayer 4 is placed to the bottom of the blast hole.
5) According to the conditions of water-cement ratio, temperature in a hole and the like, the mixing amount of the concrete early-strength antifreezing agent is adjusted to be 8%, the concrete early-strength antifreezing agent, cement and aggregate are uniformly stirred, an air compressor 6 is started firstly, no-load wind pressure is adjusted to be 0.08MPa according to the conveying distance, a pressurized water conveying device 5 is started, and finally a concrete sprayer 1 is started to spray.
6) Promote three mouth shower nozzles 4 slowly through hoisting device 8, constantly adjust wind pressure, water pressure according to water-cement ratio and delivery distance, along with three mouth shower nozzles 4 rise to 5m position below the drill way, the wind pressure increases gradually to 0.3Mpa, water pressure increases gradually to 0.4 Mpa.
7) And after the guniting is finished, closing the concrete sprayer 1, closing the pressurized water conveying device 5 after the materials in the conveying pipeline 2 are sprayed to the full, finally closing the air compressor 6, and taking out the three-nozzle spray head 4 by utilizing the lifting device 8.
8) And arranging a blast hole heat-insulating cover 9 above the blast hole according to the diameter of the blast hole.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the above embodiments.
Claims (10)
1. The utility model provides a sprayed concrete prevents pore wall and gushes water freezing device, a serial communication port, including the concrete sprayer, the conveying pipeline, a water pipe, three-nozzle shower nozzle, pressure boost water conveyor, pressure gas formula pumping device, hoisting device and big gun hole heat preservation lid, pressure boost water conveyor leads to pipe and three-nozzle shower nozzle upper water ring water guide mouth and links to each other, three-nozzle shower nozzle passes through the conveying pipeline and links to each other with the concrete sprayer, hoisting device passes through rotatory chamber and links to each other with three-nozzle shower nozzle, pressure gas formula pumping device is used for clearing the groundwater that gushes out in the big gun hole, big gun hole heat preservation lid is used for covering and keeps warm in the big gun hole top.
2. The device of claim 1, wherein the concrete sprayer is an explosion-proof concrete dry sprayer, and the maximum particle size of the aggregate is not more than 10 mm.
3. The apparatus as claimed in claim 1, wherein the feed pipe is made of cold-resistant plastic.
4. The device for preventing the sprayed concrete from gushing water and freezing through the hole wall as claimed in claim 1, wherein the three-nozzle spray head comprises a mixing cavity, a rotating disc is arranged on the outer wall of the upper end of the mixing cavity, grooves are formed in the upper portion and the lower portion of the edge of the rotating disc, and steel balls are arranged in the grooves; the upper part of the outer wall of the mixing cavity is provided with a water ring water guide port connected with a water pipe, the upper end of the mixing cavity is provided with a feeding port connected with a material conveying pipeline, the upper part of the outer wall of the mixing cavity is also provided with a spray head rotating gear, and the lower parts of the three-nozzle spray heads are nozzles.
5. The device of claim 4, wherein the number of the nozzles is three, the included angles of the three nozzles are 120 degrees, the connecting position of the mixing cavity and the nozzles is in an arc-shaped structure, and the nozzles are conical nozzles.
6. The device for preventing water burst and freezing on the wall of a hole for spraying concrete as claimed in claim 1 or 4, wherein the lifting device comprises lifting rods, a rotating cavity, a speed reduction motor and a forward and reverse rotation motor, one side of each lifting rod is of a rack structure, the upper ends of the two lifting rods are fixed through a cross rod, the inner sides of the two lifting rods are in transmission connection with the speed reduction motor through racks, and a material conveying pipeline can be placed between the two lifting rods; the rotary cavity is fixed at the lower end of the lifting rod; the rotating cavity is wrapped outside the rotating disc of the three-nozzle spray head and is connected with the rotating disc in a sliding way through steel balls in the grooves of the rotating disc; the positive and negative rotation motor is fixed on the lifting rod and is meshed with the spray head rotating gear of the three-nozzle spray head through the transmission gear.
7. The device of claim 6, wherein the lifting rod and the rotating cavity are made of cold-resistant tensile alloy.
8. The device of claim 6, wherein the two lifting rods are solid, the top ends of the two lifting rods are connected by a cross rod made of the same alloy, the lifting rods are locked horizontally and cannot move, the movement in the vertical direction is controlled by a speed reduction motor, the speed reduction motor is connected with a transmission shaft, and the transmission shaft is provided with two transmission gears connected with racks on the lifting rods.
9. The device for preventing water burst and freezing through the wall of the hole for spraying concrete as claimed in claim 1, wherein the thermal insulation cover for the blast hole is made of a truncated cone-shaped plastic foam material, and is narrow at the lower part and wide at the upper part.
10. A method of using the shotcrete pore wall water-burst freezing prevention device according to any one of claims 1-9, comprising the steps of:
1) acquiring the temperature in the hole and the water burst situation of the mine blast hole, wherein the water depth in the blast hole and the shallowest water burst position of the blast hole are included;
2) determining the thickness of sprayed concrete according to the temperature in the hole and the water gushing condition;
3) connecting an air compressor with a pneumatic water pumping device through a pipeline, adjusting the air pressure according to the hole depth and the water depth in the blast hole, placing a pneumatic water discharging device into the blast hole, discharging underground water gushing out of the blast hole by using the pneumatic water discharging device, and taking out the pneumatic water discharging device;
4) connecting an air compressor with a concrete sprayer and a pressurized water conveying device through pipelines, checking the whole device for preventing the sprayed concrete from gushing water and freezing the water, placing a three-nozzle spray head with a material conveying pipeline at the position above the center of a blast hole by using a lifting device after the checking is finished, starting a speed reducing motor, and putting the three-nozzle spray head to the bottom of the blast hole;
5) adjusting the mixing amount of the concrete early-strength antifreezing agent according to the water-cement ratio and the temperature condition in the hole, uniformly stirring the concrete early-strength antifreezing agent, cement and aggregate, starting an air compressor, adjusting the no-load wind pressure according to the conveying distance, starting a pressurized water conveying device, and finally starting a concrete sprayer to spray;
6) slowly lifting the three-nozzle spray head through a lifting device, continuously adjusting the air pressure and the water pressure according to the water-cement ratio and the conveying distance, and gradually increasing the air pressure to be more than or equal to 0.3Mpa and the water pressure to be more than or equal to 0.4Mpa along with the lifting of the three-nozzle spray head to the shallowest water gushing position of the blast hole;
7) after the guniting is finished, closing the concrete sprayer, closing the pressurized water conveying device after the materials in the conveying pipeline are sprayed out, finally closing the air compressor, and taking out the three-nozzle spray head by utilizing the lifting device;
8) and arranging a blast hole heat-insulating cover above the blast hole according to the diameter of the blast hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210404790.4A CN114608397B (en) | 2022-04-18 | 2022-04-18 | Device for preventing sprayed concrete from water burst from wall of hole and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210404790.4A CN114608397B (en) | 2022-04-18 | 2022-04-18 | Device for preventing sprayed concrete from water burst from wall of hole and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114608397A true CN114608397A (en) | 2022-06-10 |
| CN114608397B CN114608397B (en) | 2023-06-02 |
Family
ID=81868847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210404790.4A Active CN114608397B (en) | 2022-04-18 | 2022-04-18 | Device for preventing sprayed concrete from water burst from wall of hole and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114608397B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050068674A (en) * | 2003-12-30 | 2005-07-05 | 석철기 | A blasting method for down vibration noise mutual interference blasting vibration time difference |
| JP2006225906A (en) * | 2005-02-16 | 2006-08-31 | Public Works Research Institute | Method for reinforcing tunnel lining concrete |
| US20100122846A1 (en) * | 2008-11-14 | 2010-05-20 | Denyse Claire Dubrucq Living Trust | Boring green-hydro, cryo vertical drilling |
| CN201871450U (en) * | 2010-11-30 | 2011-06-22 | 成都市新筑路桥机械股份有限公司 | Spraying head used for injection machine |
| CN203570324U (en) * | 2013-09-17 | 2014-04-30 | 长安大学 | Traction self-propelled concrete sprayer with spraying nozzle capable of automatically rotating |
| CN104265229A (en) * | 2014-09-01 | 2015-01-07 | 中国水利水电第六工程局有限公司 | Water burst blast hole plugging method |
| CN204456125U (en) * | 2015-01-29 | 2015-07-08 | 山东科技大学 | A kind of detachable concrete spray head |
| JP5982027B1 (en) * | 2015-03-18 | 2016-08-31 | 寿建設株式会社 | Water leakage countermeasures for tunnels constructed by the Natom method |
| CN205997175U (en) * | 2016-08-31 | 2017-03-08 | 中国水利水电第七工程局有限公司 | Dust-arrest device thrown in by a kind of concrete mixing plant stirring host material |
| CN106761532A (en) * | 2016-12-27 | 2017-05-31 | 山东新河矿业有限公司 | Leak drilling sealing aggregate filter cuts the application method of device |
| CN206428659U (en) * | 2016-12-12 | 2017-08-22 | 永康市杰地希机器人科技有限公司 | A kind of high-pressure grout injector |
| CN107271003A (en) * | 2017-07-03 | 2017-10-20 | 辽宁科技大学 | Bench blasting water cannon hole depth measurement buoyancy bar and measuring method |
| CN108661673A (en) * | 2018-06-26 | 2018-10-16 | 中国矿业大学 | A kind of the concrete spraying machinery and gunnite method of joint pumping and whirlwind conveying |
| CN110453700A (en) * | 2019-08-23 | 2019-11-15 | 瑞派尔(宜昌)科技集团股份有限公司 | A kind of falling zone slope reinforcement concrete construction injection method |
| CN110700790A (en) * | 2019-09-26 | 2020-01-17 | 中煤科工集团西安研究院有限公司 | Complete hole sealing method for coal mine underground Ordovician limestone aquifer large-flow water-gushing and sand-gushing drill hole |
| CN112664140A (en) * | 2020-12-25 | 2021-04-16 | 辽宁科技大学 | Method for preventing blast holes in plateau severe cold regions from bursting water and preventing freezing |
| KR102252307B1 (en) * | 2020-10-20 | 2021-05-14 | 주식회사 석성발파건설 | Shear thickening fluid stem method for blasting using shear thickening fluid stem |
| CN113318893A (en) * | 2021-06-06 | 2021-08-31 | 成远矿业开发股份有限公司 | Spraying device for waterproof and heat-insulating material for blast holes in plateau alpine regions and using method |
| KR20220018289A (en) * | 2020-08-06 | 2022-02-15 | (주)성창에스씨 | Method of plastering a wall |
| CN215927332U (en) * | 2021-09-26 | 2022-03-01 | 辽宁科技大学 | Self-heating blast hole freeze-proof device |
-
2022
- 2022-04-18 CN CN202210404790.4A patent/CN114608397B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050068674A (en) * | 2003-12-30 | 2005-07-05 | 석철기 | A blasting method for down vibration noise mutual interference blasting vibration time difference |
| JP2006225906A (en) * | 2005-02-16 | 2006-08-31 | Public Works Research Institute | Method for reinforcing tunnel lining concrete |
| US20100122846A1 (en) * | 2008-11-14 | 2010-05-20 | Denyse Claire Dubrucq Living Trust | Boring green-hydro, cryo vertical drilling |
| CN201871450U (en) * | 2010-11-30 | 2011-06-22 | 成都市新筑路桥机械股份有限公司 | Spraying head used for injection machine |
| CN203570324U (en) * | 2013-09-17 | 2014-04-30 | 长安大学 | Traction self-propelled concrete sprayer with spraying nozzle capable of automatically rotating |
| CN104265229A (en) * | 2014-09-01 | 2015-01-07 | 中国水利水电第六工程局有限公司 | Water burst blast hole plugging method |
| CN204456125U (en) * | 2015-01-29 | 2015-07-08 | 山东科技大学 | A kind of detachable concrete spray head |
| JP5982027B1 (en) * | 2015-03-18 | 2016-08-31 | 寿建設株式会社 | Water leakage countermeasures for tunnels constructed by the Natom method |
| CN205997175U (en) * | 2016-08-31 | 2017-03-08 | 中国水利水电第七工程局有限公司 | Dust-arrest device thrown in by a kind of concrete mixing plant stirring host material |
| CN206428659U (en) * | 2016-12-12 | 2017-08-22 | 永康市杰地希机器人科技有限公司 | A kind of high-pressure grout injector |
| CN106761532A (en) * | 2016-12-27 | 2017-05-31 | 山东新河矿业有限公司 | Leak drilling sealing aggregate filter cuts the application method of device |
| CN107271003A (en) * | 2017-07-03 | 2017-10-20 | 辽宁科技大学 | Bench blasting water cannon hole depth measurement buoyancy bar and measuring method |
| CN108661673A (en) * | 2018-06-26 | 2018-10-16 | 中国矿业大学 | A kind of the concrete spraying machinery and gunnite method of joint pumping and whirlwind conveying |
| CN110453700A (en) * | 2019-08-23 | 2019-11-15 | 瑞派尔(宜昌)科技集团股份有限公司 | A kind of falling zone slope reinforcement concrete construction injection method |
| CN110700790A (en) * | 2019-09-26 | 2020-01-17 | 中煤科工集团西安研究院有限公司 | Complete hole sealing method for coal mine underground Ordovician limestone aquifer large-flow water-gushing and sand-gushing drill hole |
| KR20220018289A (en) * | 2020-08-06 | 2022-02-15 | (주)성창에스씨 | Method of plastering a wall |
| KR102252307B1 (en) * | 2020-10-20 | 2021-05-14 | 주식회사 석성발파건설 | Shear thickening fluid stem method for blasting using shear thickening fluid stem |
| CN112664140A (en) * | 2020-12-25 | 2021-04-16 | 辽宁科技大学 | Method for preventing blast holes in plateau severe cold regions from bursting water and preventing freezing |
| CN113318893A (en) * | 2021-06-06 | 2021-08-31 | 成远矿业开发股份有限公司 | Spraying device for waterproof and heat-insulating material for blast holes in plateau alpine regions and using method |
| CN215927332U (en) * | 2021-09-26 | 2022-03-01 | 辽宁科技大学 | Self-heating blast hole freeze-proof device |
Non-Patent Citations (1)
| Title |
|---|
| 韩温池等: "八里塘风井过石英砂岩对策", 建井技术 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114608397B (en) | 2023-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213921B (en) | Based on the freezing type coal uncovering method of hydraulic slotted liner technique | |
| CN207131404U (en) | Railway tunnel ultra-deep shaft construction freezing method structural system | |
| CN110359930B (en) | Grouting system for easily-broken roadway surrounding rock and fire preventing and extinguishing method thereof | |
| CN106939766B (en) | Hot-cold impact three-stage coal breaking device and implementation method | |
| CN108661175B (en) | A kind of arch ice structure construction method | |
| CN104453945A (en) | Self-stirring wet type concrete sprayer | |
| CN104453997A (en) | Filling air bag separating plate device of mine gob-side entry retaining | |
| CN104563099A (en) | Porous pipe method large-diameter high-pressure jet grouting pile construction method | |
| CN107605441B (en) | Device and method for introducing liquid nitrogen into open hole well | |
| CN207079930U (en) | A kind of efficiently centrifugal grouting device of shear wall through-wall bolt hole | |
| CN112943191A (en) | Method for increasing permeability and displacing coal seam gas by filling dry ice in drill hole | |
| CN102635373B (en) | High-pressure hydraulic injection system | |
| CN108266222A (en) | A kind of solvent extraction, moistening reversion, pulsation pressure break Trinity coal body anti-reflection method | |
| CN114608397A (en) | Device for preventing sprayed concrete from gushing water and freezing on hole wall and using method | |
| CN113318893B (en) | Spraying device for waterproof and heat-insulating material for blast holes in plateau alpine regions and using method | |
| CN110805035A (en) | Construction process of anti-floating anchor rod in complex stratum and air intake and exhaust grouting pipeline system | |
| CN103103303A (en) | Method for disintegrating large-scale blast furnace residual iron | |
| CN107227958B (en) | Well wall structure of vertical well neck section high-spraying curtain pile, construction device and construction method | |
| CN117386371A (en) | Side wall coal tunneling device with temporary support function and using method thereof | |
| CN108468545B (en) | A kind of seasonality adopt-arranges the storage of open coal mine water resource and concocting method | |
| CN108590621B (en) | System and method for high-pressure sand adding after hydraulic fracturing remote continuous pump in coal mine | |
| CN211777368U (en) | Hydraulic sand fracturing system | |
| CN204881226U (en) | A device for getting rid of rotary kiln ring formation | |
| CN203360480U (en) | Spray gun used for assisting slagging-off by blowing air at top during molten iron pretreatment | |
| CN204299588U (en) | From the wet concrete sprayer stirred |
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 |