CN210003328U

CN210003328U - underground movable gravel cemented filling system

Info

Publication number: CN210003328U
Application number: CN201920808126.XU
Authority: CN
Inventors: 郑伯坤; 尹旭岩
Original assignee: Changsha Institute of Mining Research Co Ltd
Current assignee: Changsha Institute of Mining Research Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-01-31
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a portable rubble cemented filling system in pit, including surface cement thick liquid preparation station, the broken station of rubble in pit and the portable station of filling in pit, surface cement thick liquid preparation station is including cement storehouse and cement mixer, the cement storehouse is connected with the cement mixer, the broken station of rubble in pit includes the hammer crusher, the portable station of filling in pit includes horizontal mixer, the cement mixer is connected with horizontal mixer through the pipeline, the kibbling rubble of hammer crusher transports to horizontal mixer, horizontal mixer is connected with the stope.

Description

underground movable gravel cemented filling system

Technical Field

The utility model belongs to the technical field of the mine technique of filling and specifically relates to a portable rubble cemented filling systems in pit are related to.

Background

The underground mining of mines inevitably generates a large amount of waste rocks, if the broken stones are lifted to the ground surface for piling, a large amount of land resources and space are occupied, and secondary harm caused by the waste rocks and damage to production life and ecological environment are troubled constantly. In addition, along with the mining degree of depth constantly increases, barren rock lifting cost also improves by a wide margin, influences enterprise economic benefits.

The best method for treating and utilizing the underground waste rock is , which is directly used for filling in an underground stope, practice proves that the underground broken stone cemented filling process is adopted and combined with a filling mining method, and the method has good effects on the aspects of improving the ore recovery rate and the mining efficiency, reducing the mining cost, improving the operating conditions, realizing low-waste mining and the like.

The traditional filling technology has large investment of a filling system and long construction period, aggravates the shortage of funds of small and medium-sized mines and is not beneficial to application of filling method pushing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing underground movable gravel cementing and filling systems which can mix gravel and cement and fill underground stopes.

kind of underground movable rubble cemented filling system, including surface cement paste preparation station, the broken station of underground rubble and the underground movable filling station, surface cement paste preparation station includes cement storehouse and cement mixer, the broken station of underground rubble includes the hammer crusher, the underground movable filling station includes horizontal mixer, the cement mixer discharge opening is connected with underground cement paste buffer memory pond through the pipeline, underground cement paste buffer memory pond is connected with horizontal mixer, the kibbling rubble of hammer crusher is transported to horizontal mixer, horizontal mixer is connected with the stope.

, connecting the cement mixer pipeline with a slurry pump end, connecting the other end of the slurry pump with an underground cement slurry buffer pool end, and connecting the other end of the underground cement slurry buffer pool with a horizontal mixer.

And , arranging a main belt at the outlet of the hammer crusher.

, a single-layer screen is arranged below the end of the main belt , crushed gravel falls on the main belt, the crushed gravel moves along with the main belt, the single-layer screen is arranged below the main belt, and the crushed gravel falls from the outlet end of the main belt and is screened by the single-layer screen.

And , a finished belt is arranged below the single-layer screen, the single-layer screen can enable finished crushed stone to fall down, enter the finished belt below the single-layer screen, run along with the finished belt and finally enter a crushed stone finished product storage yard, crushed stone in the crushed stone finished product storage yard is transported by a loader, the crushed stone is transported to a horizontal mixer, mixed with cement paste and additives and filled in a downhole stope, the crushed stone larger than the hole size enters the defective frame along the single-layer screen, and then the crushed stone in the defective frame is transported to an inlet of a hammer crusher by a return belt and crushed again.

And , connecting the horizontal stirrer with the additive barrel.

And , the size of the crushed stone of the finished product is less than or equal to 8 mm.

The utility model has the advantages that:

the utility model has the advantages of fast station building, less investment and fast putting into use; the mixture of the broken stones and the cement paste is adopted for filling the underground stope, so that the mixed broken stones can be cemented and filled in the underground stope without scattering, and the whole stope can be conveniently filled.

Drawings

FIG. 1 is a schematic flow diagram of a downhole gravel crushing station;

FIG. 2 is a schematic flow diagram of a downhole mobile filling station and a surface cement slurry preparation station.

In the figure: 1-a waste rock chute, 2-a material inlet, 3-a vibration feeder, 4-a main belt, 5-a hammer crusher, 6-a return belt, 7-a single-layer screen, 8-a finished product belt, 9-a defective product frame, 10-a loader, 11-thickening water, 12-an additive barrel, 13-an additive weighing hopper, 14-a water weighing hopper, 15-a cement weighing hopper, 16-a downhole cement slurry buffer tank, 17-a horizontal mixer, 18-a pump truck, 19-a stope, 20-a slurry pump, 21-a cement mixer, 22-a cement bin, 23-a cement tank truck, 41-a transportation part, 42-a screening part and 221-a screw feeder.

Detailed Description

The present invention will be described in further with reference to the following drawings and examples.

With reference to fig. 1 and 2, underground movable gravel cementing and filling systems comprise a surface cement slurry preparation station, an underground gravel crushing station and an underground movable filling station, wherein the surface cement slurry preparation station comprises a cement bin 22 and a cement mixer 21, the underground gravel crushing station comprises a hammer crusher 5, the underground movable filling station comprises a horizontal mixer 17, the cement mixer 21 is connected with the horizontal mixer 17 through a pipeline, crushed gravel of the hammer crusher 5 is transferred to the horizontal mixer 17, and the horizontal mixer 17 is connected with a stope 19.

The surface cement slurry preparation station is arranged on the surface of the ground and is provided with a cement bin 22, and bulk cement is transported to the surface cement slurry preparation station by a cement tank truck 23 and is blown and discharged into the cement bin 22 through a dust blowing pipe. The cement enters the cement weighing hopper 15 through the screw feeder 221, and the stirring water enters the water weighing hopper 14 through the high-level water pool. The discharge bottom valves of the cement weighing hopper 15 and the water weighing hopper 14 are then opened and cement and water are fed into the cement mixer 21. The cement mixer 21 is operated at a high speed to fully mix and disperse the two materials, and finally homogeneous and stable cement paste is prepared. The prepared cement slurry is delivered to a downhole slurry buffer pool 16 in a downhole mobile filling station by a slurry pump 20 and a slurry delivery pipe. The cement mixer can adopt a model JS1000 or other mixers meeting the requirements.

The screw feeder 221 is a new generation product which collects powder material steady flow conveying, weighing and metering and quantitative control, is suitable for continuous metering and proportioning of powder materials in various industrial production environments, adopts a plurality of advanced technologies, is reliable in operation and high in control precision, and realizes setting of different feeding amounts by adjusting the rotating speed of the screw conveyor.

The underground broken stone crushing station is arranged in an underground stope, can conveniently mine broken stones, and saves working procedures and time, waste stones generated by tunneling are sent into the underground broken stone crushing station through a waste stone chute 1, the underground broken stone crushing station is provided with a hammer crusher 5, the hammer crusher is devices for crushing materials in an impact mode, the hammer crusher is selected from devices with the model of PC-400 multiplied by 300, a material inlet 2 of the hammer crusher is provided with a vibrating feeder 3, the vibrating feeder is also called a vibrating feeder, and is used for uniformly, regularly and continuously feeding blocky and granular materials from a storage bin to a receiving device, and the vibrating feeder is selected from DZ 30-4.

The hammer crusher crushes the waste rocks with the lumpiness smaller than 400mm, the crushed rocks come out from an outlet of the hammer crusher and fall on a main belt 4, the main belt is divided into a conveying part 41 and a screening part 42, and the conveying part 41 is installed below the hammer crusher 5 and is horizontally installed; the screening part 42 is connected to the transporting part 41 to be installed obliquely upward. Install individual layer screen cloth 7 in the below of screening portion 42, the setting direction of individual layer screen cloth is parallel with screening portion, and the individual layer screen cloth can make size less than or equal to 8 mm's rubble pass, and the rubble that passes is the finished product rubble, and the finished product rubble can fall on setting up on individual layer screen cloth below finished product belt 8, and the finished product belt set up the direction parallel with the individual layer screen cloth, and finished product belt 8 transports the finished product rubble to finished product rubble storage yard.

Crushed stones with the size larger than 8mm slide down along the single-layer screen 7 to enter the defective product frame 9, and then are transported to the material inlet of the hammer crusher again by the material returning belt 6 to be crushed again until the requirement of the particle size is met.

The underground movable filling station is arranged in an underground stope and mainly comprises a horizontal stirrer 17, the model of the horizontal stirrer is CDLW-300, crushed stones in a finished crushed stone storage yard are transferred to the horizontal stirrer of the underground movable filling station through a loader 10, in the process, the crushed stones need to be weighed, times of crushed stones are weighed each time, and then the crushed stones are put into the horizontal stirrer, cement in an underground cement slurry cache pool 16 is weighed by a cement weighing hopper 15 and then put into the horizontal stirrer, times of cement slurry is weighed each time, additives and thickening water need to be added into the horizontal stirrer, an additive barrel 12 is directly transferred to the side of the underground movable filling station, the amount of the additives needed by stirring for 35 times is weighed by the additive weighing hopper 13 and added into the horizontal stirrer, the thickening water 11 adopts water in the underground water pool, the water is pumped into a water weighing hopper 14 by a water pump, the water needed by stirring for times each time is pumped and added into the horizontal stirrer.

The crushed stone, the cement paste, the additive and the thickening water which are accurately metered enter a stirrer and then are efficiently activated and stirred by a horizontal stirrer; the horizontal mixer feeds the prepared macadam cemented filling slurry into a pump hopper through a pump truck 18, and the slurry is conveyed to a stope through a conveying pipeline in the pit.

In the embodiment, when the stope is far away from the waste rock ore pass, the filling slurry can be conveyed through the filling pipeline, the underground movable filling station can be moved to be close to the filling stope according to actual conditions, then the finished crushed stones are conveyed to be close to the filling stope, then filling is carried out through the underground movable filling station, and the filling process can be flexibly adjusted. By adopting periodic preparation, accurate metering technology and additive technology, the sand-lime ratio can be accurately adjusted, the filling strength is ensured, the material is saved, and the filling cost is reduced. The cement slurry is prepared on the surface, so that the pollution of underground metering addition to the operation environment is avoided.

The utility model discloses a use method, preparation grout in the surface cement paste preparation station on the earth's surface, add cement and water into the cement mixer after weighing, pass through the pipeline with the cement paste of stirring and carry to the portable filling station's of pit underground in the mud buffer pool, the broken stone crushing station and the portable filling station of pit stope in the pit, broken stone that the broken stone crushing station will take in the pit is broken to size less than or equal to 8mm, reuse loader will be qualified broken stone and transport to the portable filling station of pit, install horizontal mixer at the portable filling station of pit, weigh rubble, additive, accent dense water and grout according to stirring volume, add into horizontal mixer and stir, form rubble cemented filling ground paste, transport rubble cemented filling ground paste to stope again.

Claims

The underground movable gravel cementation filling system is characterized by comprising an earth surface cement paste preparation station, an underground gravel crushing station and an underground movable filling station, wherein the earth surface cement paste preparation station comprises a cement bin and a cement mixer, a discharge port of the cement bin is connected with a feed port of the cement mixer, the underground gravel crushing station comprises a hammer crusher, the underground movable filling station comprises a horizontal mixer, a discharge port of the cement mixer is connected with an underground cement paste cache pool through a pipeline, the underground cement paste cache pool is connected with the horizontal mixer, crushed gravel of the hammer crusher is transferred to the horizontal mixer, and the horizontal mixer is connected with a stope.
2. The underground movable gravel pack system of claim 1, wherein the cement mixer pipeline is connected with the end of the slurry pump, the other end of the slurry pump is connected with the end of the underground cement slurry buffer pool, and the other end of the underground cement slurry buffer pool is connected with the horizontal mixer.
3. The downhole mobile gravel pack system of claim 1, wherein: and a main belt is arranged at the outlet of the hammer crusher.
4. The downhole portable gravel pack system of claim 3, wherein a single screen is placed under the end of the main belt .
5. The downhole mobile cemented rock fill system of claim 4, wherein: and a finished belt is arranged below the single-layer screen.
6. The downhole mobile gravel pack system of claim 1, wherein: the horizontal stirrer is connected with the additive barrel.
7. The downhole portable gravel pack system of any one of claims 1 to 6 to , wherein the gravel size of the finished product is 8mm or less.