CN113847087A - End slope mining gangue-throwing filling grouting reinforcement construction process - Google Patents
End slope mining gangue-throwing filling grouting reinforcement construction process Download PDFInfo
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- CN113847087A CN113847087A CN202011029171.9A CN202011029171A CN113847087A CN 113847087 A CN113847087 A CN 113847087A CN 202011029171 A CN202011029171 A CN 202011029171A CN 113847087 A CN113847087 A CN 113847087A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
- E21F15/10—Hydraulic or pneumatic filling-up machines
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Abstract
本发明公开了一种端帮开采抛矸充填注浆加固施工工艺：利用矸石填充机对采空区抛洒矸石充填，再利用敷设的管路对充填矸石空隙进行注浆加固，实现对矸石充填体的全范围的密实，从而解决矸石充填不能接顶问题以及充填体压实强度低、范围小的问题。利用矸石填充机自身的遥控功能，将填充机送到充填地点；利用填充机拖动胶带输送机、注浆管路到充填区域。矸石经胶带运输、填充机抛撒，对充填区域进行充填。抛矸充填一块区域后，注浆装置对该区域进行喷浆操作。本发明采用抛矸充填、注浆加固后，加大了充填体积，提高了充填率和密实率。提高充填体强度和稳定性，实现控制围岩变形的目的。另外，采用远程遥控操作，实现了巷道填充无人化作业。The invention discloses a construction technology for filling and grouting reinforcement of gangue in end-assisted mining. A gangue filling machine is used to fill the goaf with gangue, and then the laid pipelines are used to fill in the gangue gaps for grouting reinforcement, so as to realize the gangue filling body. The full range of compaction can be achieved, thereby solving the problem that the gangue filling cannot be connected to the top and the problems of low compaction strength and small range of the filling body. Use the remote control function of the gangue filling machine to send the filling machine to the filling place; use the filling machine to drag the belt conveyor and grouting pipeline to the filling area. The gangue is transported by tape and thrown by the filling machine to fill the filling area. After the gangue fills an area, the grouting device performs the grouting operation on the area. After the invention adopts gangue filling and grouting reinforcement, the filling volume is increased, and the filling rate and the compaction rate are improved. Improve the strength and stability of the backfill and achieve the purpose of controlling the deformation of the surrounding rock. In addition, the remote control operation is adopted to realize the unmanned operation of roadway filling.
Description
The technical field is as follows:
the invention belongs to a filling mining technology, and particularly relates to a goaf filling technology for end slope mining, namely an unmanned construction process of throwing waste filling and grouting reinforcement.
Background art:
after the open-pit mining is finished, the residual ore remained around the open-pit boundary is the end slope ore, and the end slope ore accounts for 5% -16% of the total mining reserve through excavation statistics. The end slope mining technology is a technology for mining raw coal by utilizing exposed coal seam arrangement coal mining equipment at the end slope of an open pit coal mine stope, and does not need to be separately stripped or built.
Mining by adopting an end slope technology, wherein the surface of the ground is not allowed to be greatly damaged by mining due to factors such as ground construction, environmental protection and the like in part of sections; meanwhile, part of the thick coal seam needs to be mined in a layering way, and the next layering mining needs to be carried out above the goaf; moreover, after the mine is mined in the open air for many years, the formed high and steep overtopping slope is in a limit balance state, and the mining end slope mine has a certain influence on the safety and the stability of the slope. Therefore, the goaf needs to be filled in the mining process. Through waste rock filling, a series of problems caused by coal mining can be effectively solved, and effective foundation support is provided for the ground of the goaf.
When filling mining is carried out by adopting a gangue filling material and a mechanical conveying mode thereof, firstly, full filling (namely full roof contact) cannot be realized in the vertical direction; secondly, because the compaction and tamping of the filling material can not be realized by the common filling method, the compaction and tamping strength is low and the range is small, so that the compactness of the filling body can not meet the technical requirements.
With the development of the technology, the mechanized unmanned operation gradually becomes the future development trend, and under the condition of extremely complex underground working environment, the mechanized unmanned operation improves the safety and saves the labor cost.
The invention content is as follows:
the invention aims to provide a grouting reinforcement unmanned construction process based on waste filling in an end slope mining process, aiming at the defects of the existing end slope mining waste filling. Firstly, a waste rock filling machine is used for throwing waste rocks to a goaf for filling, and then a laid pipeline is used for grouting and reinforcing gaps of the filled waste rocks, so that the full-range compaction of a waste rock filling body is realized. Thereby solving the problems of roof contact of waste rock filling and low filling compaction strength and small range.
The construction process for end slope mining, gangue dumping, filling, grouting and reinforcing comprises a gangue dumping and filling process and a grouting and reinforcing system process which are composed of a telescopic rubber belt conveyor and a gangue filling machine. The gangue throwing, filling, grouting and reinforcing construction process comprises the following steps:
[1] the gangue filling machine is sent to a designated position by utilizing the remote control operation function of the gangue filling machine; the waste rock filling machine is connected with the rubber belt conveyor, and the waste rock transportation system is arranged to a specified position by utilizing the movement of the waste rock filling machine; and (4) dragging the grouting pipeline by utilizing the movement of the gangue filling machine, and laying the grouting system to the specified position.
[2] The waste rock is conveyed to the waste rock filling machine through the telescopic rubber belt conveyor, and the waste rock filling machine is used for filling a filling area by throwing the waste rock.
[3] The waste rock filling machine is used for throwing a filling area of waste rock, and the grouting device is used for immediately carrying out grouting operation on the area.
[4] Slurry in the grouting system is pressurized by a grouting pump and then is conveyed to a grouting pipeline laid on a gangue filling machine through the grouting pipeline, so that a filling area, particularly the upper part of a filling body, is sprayed, and gaps among gangue are filled.
[5] When the spreading is finished, the rubber belt is retracted by one filling step, an extending command is applied to a telescopic oil cylinder of a telescopic rubber belt conveyor to enable the rubber belt to be retracted, and the telescopic rubber belt conveyor is retracted by one filling step outwards; the filling machine also automatically retreats outward by a filling step distance through remote control. Meanwhile, the grouting pipeline retreats by detaching one section of pipeline at the outer end.
[6] Thus, the next filling area is filled, and further the filling of the whole roadway is realized.
The gangue filling machine is further improved on the basis of the existing filling machine. Firstly, adopt high-power motorized pulley to throw, throw effectually. And secondly, the hydraulic valve group is adopted, and the pilot handle controls the belt throwing action, so that the operation is simple and the reliability is high. Thirdly, the casting belt has the functions of lifting, rotating, stretching and flattening, the propelling force is large, the all-dimensional filling of the roadway can be ensured, the filling rate of the gangue in the roadway is high, and the filling effect is good. Fourthly, the feeding and unloading mechanism has the functions of leveling, inclination adjustment, deviation adjustment and height adjustment, and has strong adaptability. And fifthly, the machine has the functions of manual operation and sight distance remote control operation and can remotely control various actions of the gangue filling mechanism.
The telescopic rubber belt conveyor comprises a belt storage telescopic box fixed on a fixed headstock, and is placed on a crawler traveling mechanism, complete machine telescopic oil cylinders are arranged on two sides of the fixed headstock, piston rods of the oil cylinders are fixed on a tailstock, a guide roller is fixed on the tailstock, the tailstock is connected with a support through a movable telescopic frame, an upper supporting roller is arranged at the top of the support, a lower supporting roller is arranged below the whole machine telescopic oil cylinders, a belt storage mechanism is arranged in the belt storage box, a rubber belt enters the belt storage box from the fixed guide roller at the bottom of the belt storage box, penetrates out of the belt storage mechanism from the upper part and is wound on an electric roller arranged at the outer top of the belt storage box, the rubber belt passes through the upper supporting roller, the fixed guide roller and the lower supporting roller and is connected with the rubber belt at the fixed guide roller at the bottom of the belt storage box, and a hydraulic pump and a motor for providing power are further arranged.
When the oil cylinder extends out, the adhesive tape can be collected into the tape storage box, and when the oil cylinder retracts, the adhesive tape can be discharged out of the tape storage box, so that the conversion between the contraction and the discharge of the adhesive tape is realized. Thereby realizing the extension and the shortening of the rubber belt conveyor.
The grouting filling system is mainly divided into three links of dry material preparation, slurry preparation and pumping filling in the process flow: firstly, processing and crushing the washing gangue, then transporting the crushed gangue particles, fly ash and the like to a mobile pump station in proportion, then adding water to prepare filling slurry by utilizing equipment such as a stirrer and the like, and conveying the slurry to a goaf by adopting a special filling pump for filling operation. The filling material is inorganic material, and the gangue filling slurry is composed of: the small gangue particles (with the particle size of less than 2mm), the fly ash, the additive (developed by self-preparation and non-cementation) and the water have the excellent characteristics of strong fluidity, long-distance transportation, no segregation for a long time and no bleeding.
And (4) laying a grouting pipeline, and fixing the grouting pipeline by respectively welding a circular ring on two side walls of the gangue filling machine. The rear pipeline is placed along the roadway bottom plate and is supported by the pipe conveying trolley. And (4) lifting the grouting pipeline along with the filling machine in the area needing grouting filling, and grouting and filling the front end area.
The grouting pipeline is formed by combining segmented grouting pipelines through connecting buckles, and the connecting buckles are arranged in a grouting pipe area between the two pipe conveying trolleys. A U-shaped support is arranged above the bottom plate of the pipe conveying trolley, the grouting pipeline is supported by the U-shaped support, and the pipe conveying trolley drives the grouting pipeline to move.
And after the grouting reinforcement is finished in a filling area, backing by a filling step pitch. Thereby driving the pipe conveying trolley to retreat, and enabling the grouting pipeline to retreat. Before the gangue filling machine moves outwards, a section of grouting pipe is disassembled, and after the gangue filling machine moves in place, the rest grouting pipes are connected. Therefore, the roadway is reinforced by gradually grouting from the inside to the outside.
The controller of the filling machine is placed outside the roadway, action signals are applied to the controller through cables, the filling machine is provided with a peeping instrument and a lighting system, and monitoring of the roadway environment is achieved.
Has the advantages that:
firstly, gangue scattering filling is carried out in the goaf, and the filling cost can be effectively reduced. And then grouting reinforcement is carried out to fill gaps of the waste rocks, grouting reinforcement slurry permeates the thrown waste rocks, and high-pressure grouting enables the filling body to be compacted and compacted. Therefore, a fully-topped filling body is formed in the goaf, the filling volume is increased, and the filling rate and the compaction rate are improved. Meanwhile, additives with certain components are added into the grouting reinforcement slurry, so that the bonding strength is improved. The strength and stability of the filling body are improved.
With the development of the technology, mechanized unmanned operation gradually becomes the future development trend. The technical scheme is remote control operation, and the unmanned filling of the roadway is really realized. The safety is improved through the mechanized unmanned operation, and meanwhile, the labor cost is saved.
Description of the drawings:
FIG. 1 is a schematic view of a gangue throwing, filling, grouting and reinforcing process
FIG. 2 is a schematic view of a retractable and retractable belt conveyor
FIG. 3 gangue filling machine
FIG. 4 slip casting process flow diagram
FIG. 5 is a schematic view of a pipe transporting trolley
The specific implementation mode is as follows:
the present invention will now be described in further detail with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The construction process for throwing, filling, grouting and reinforcing is characterized by comprising the following steps:
[1] and (3) arrangement of a waste rock throwing and filling system: the remote control function of the 21 gangue filling machine is utilized to send the gangue filling machine to a position needing to be filled in the appointed goaf; the 21 gangue filling machine is connected with the 19 telescopic belt conveyor, and the gangue transport system is arranged to a designated position by using the movement of the gangue filling machine.
[2] And a circular ring 22 is welded above two sides of the 21 gangue filling machine respectively and used for fixing the grouting pipe. And dragging 20 the grouting pipeline to move forwards by using the movement of the 21 gangue filling machine, and laying the grouting system to a specified position.
[3] The waste rock is conveyed to a 21 waste rock filling machine through a 19-degree telescopic rubber belt conveyor, and the 21 waste rock filling machine is used for filling a filling area by throwing the waste rock.
[4] The 21 gangue filling machine throws a filling area of gangue, and the 20 grouting device immediately performs the grouting operation on the area. Slurry in the grouting system is pressurized by a grouting pump and then is conveyed to a grouting pipeline 20 laid on a gangue filling machine through the grouting pipeline, so that a filling area, particularly the upper part of a filling body, is sprayed, and gaps among gangue are filled.
[5] When one filling step is finished after scattering, the rubber belt is retracted by one filling step, an extending command is applied to a telescopic oil cylinder of a 19-telescopic rubber belt conveyor to enable the rubber belt to be retracted, and the 19-telescopic rubber belt conveyor is retracted outwards by one filling step; likewise 21 the filling machine is automatically retracted by a filling step distance by remote control. Meanwhile, the 20 grouting pipelines are retracted by detaching one section of pipelines at the outer end.
Thus, the next filling area is filled, and further the filling of the whole roadway is realized.
FIG. 1 is a schematic view of a process flow of a gangue dumping and filling system and a grouting reinforcement system: the waste rock throwing and filling system comprises a waste rock filling machine 21 and a telescopic rubber belt conveyor 19; the grouting reinforcement system comprises a welding ring 22 connected with a filling machine and a grouting pipeline 20.
Fig. 2 is a schematic structural view of the telescopic rubber belt conveyor:
in the embodiment, the telescopic belt conveyor comprises a belt storage telescopic box, the belt storage box is fixed on a fixed headstock 3, the fixed headstock 3 is placed on a crawler travel mechanism 7, the complete machine telescopic oil cylinders 1 are arranged on two sides of the fixed headstock 3, four complete machine telescopic oil cylinders 1 are arranged on two sides of the middle part and the lower part of the fixed headstock 3 respectively, the bottoms of the four complete machine telescopic oil cylinders 1 are fixed on the fixed headstock 3 respectively, piston rods of the oil cylinders 1 are fixed on a tailstock 17 respectively, guide rollers 9 are fixed on the tailstock 17 respectively, the tailstock 17 is connected with a bracket 15 through a movable telescopic bracket 10, an upper carrier roller 8 is arranged at the top of the bracket 15, a lower carrier roller 12 is arranged at the lower part, universal wheels 11 are arranged at the bottoms, a belt storage mechanism capable of guiding and stretching a belt 13 is arranged in the belt storage box, the belt 13 enters the belt storage box from the fixed guide rollers 9 at the bottom of the belt storage box, after being guided and transmitted by the movable guide rollers 18, the belt is wound on the electric roller 2 arranged at the top outside the belt storage box from the upper part, then is connected with the adhesive tape 13 at the fixed guide roller 9 at the bottom of the belt storage box through the upper carrier roller 8, the fixed guide roller 9 and the lower carrier roller 12, and the bottom of the belt storage box is also provided with a hydraulic pump 5 and a motor 6 for providing power.
In this embodiment, store up and take the mechanism and include the slide 14 that sets up on the inside both sides wall of storage area case, the embedded slider 16 of slide 14, 16 both ends one side of slider inlays respectively in the slide 14 of both sides wall, the opposite side is through hub connection activity direction cylinder 18, slider 16 sets up the offside connection that the activity led cylinder 18 was taken in the storage and is taken on the piston rod of flexible hydro-cylinder 4, the flexible hydro-cylinder 4 of storage area is fixed on storing up and taking the case, upwards be provided with a plurality of from down, and double-phase adjacent flexible hydro-cylinder 4 of storage area sets up opposite direction, the 18 winding sticky tapes of activity direction cylinder.
FIG. 3 is a schematic structural diagram of the gangue filling machine;
FIG. 4 is a flow chart of a grouting reinforcement process;
after the gangue is crushed, the gangue is sieved and enters a pulping station, and an additive and water are added and mixed to prepare slurry. And pressurizing by a grouting pump, and grouting and reinforcing the goaf through a grouting pipeline.
Fig. 5 is a structural schematic diagram of the pipe conveying trolley.
A U-shaped support 25 is arranged above the bottom plate of the pipe conveying trolley, the grouting pipeline 21 is supported by the U-shaped support, and the pipe conveying trolley drives the grouting pipeline 21 to move.
After the waste rock is cast, filled and grouted for reinforcement, the filling volume is increased, and the filling rate and the compaction rate are improved. The strength and stability of the filling body are improved, and the purpose of controlling the deformation of the surrounding rock is achieved. In addition, the technical scheme has the advantages of simple operation, safety, reliability and high filling efficiency. The technical scheme is remote control operation, and the unmanned operation of roadway filling is really realized.
Claims (9)
1. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 1: the method is characterized in that: comprises a waste rock throwing and filling process and a grouting reinforcement system process which are composed of a telescopic rubber belt conveyor and a waste rock filling machine.
2. An end slope mining gangue-throwing filling grouting reinforcement construction process is characterized by comprising the following steps:
[1] the gangue filling machine is sent to a designated position by utilizing the remote control operation function of the gangue filling machine; the waste rock filling machine is connected with the rubber belt conveyor, and the waste rock transportation system is arranged to a specified position by utilizing the movement of the waste rock filling machine; and (4) dragging the grouting pipeline by utilizing the movement of the gangue filling machine, and laying the grouting system to the specified position.
[2] The waste rock is conveyed to the waste rock filling machine through the telescopic rubber belt conveyor, and the waste rock filling machine is used for filling a filling area by throwing the waste rock.
[3] The waste rock filling machine is used for throwing a filling area of waste rock, and the grouting device is used for immediately carrying out grouting operation on the area. Slurry in the grouting system is pressurized by a grouting pump and then is conveyed to a grouting pipeline laid on a gangue filling machine through the grouting pipeline, so that a filling area, particularly the upper part of a filling body, is sprayed, and gaps among gangue are filled.
[4] When the spreading is finished, the rubber belt is retracted by one filling step, an extending command is applied to a telescopic oil cylinder of a telescopic rubber belt conveyor to enable the rubber belt to be retracted, and the telescopic rubber belt conveyor is retracted by one filling step outwards; the filling machine also automatically retreats outward by a filling step distance through remote control. Meanwhile, the grouting pipeline retreats by detaching one section of pipeline at the outer end.
Thus, the next filling area is filled, and further the filling of the whole roadway is realized.
3. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 2, characterized in that: the gangue filling machine is further improved on the basis of the existing filling machine. Good casting effect, simple operation and high reliability. The gangue filling machine has the functions of manual operation and sight distance remote control operation, and can remotely control various actions of the gangue filling mechanism.
4. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 2, characterized in that: the telescopic rubber belt conveyor can take the rubber belt into the belt storage box when the oil cylinder extends out, and can discharge the rubber belt into the belt storage box when the oil cylinder retracts, so that the conversion between the contraction and the discharge of the rubber belt is realized, and the extension and the shortening of the rubber belt conveyor are realized.
5. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 1, characterized in that: the grouting filling system comprises three links of dry material preparation, slurry preparation and pumping filling; the filling material is an inorganic material.
6. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 5, characterized in that: and (4) laying a grouting pipeline, and fixing the grouting pipeline by respectively welding a circular ring on two side walls of the gangue filling machine. The rear pipeline is placed along the roadway bottom plate and is supported by the pipe conveying trolley. And (4) lifting the grouting pipeline along with the filling machine in the area needing grouting filling, and grouting and filling the front end area.
7. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 5, characterized in that: the grouting pipeline is formed by combining segmented grouting pipelines through connecting buckles, and the connecting buckles are arranged in a grouting pipe area between the two pipe conveying trolleys. A U-shaped support is arranged above the bottom plate of the pipe conveying trolley, the grouting pipe is supported by the U-shaped support, and the pipe conveying trolley drives the grouting pipeline to move.
8. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 5, characterized in that: and after the grouting reinforcement is finished in a filling area, backing by a filling step pitch. Thereby driving the pipe conveying trolley to retreat, and enabling the grouting pipeline to retreat. Before the gangue filling machine moves outwards, a section of grouting pipe is disassembled, and after the gangue filling machine moves in place, the rest grouting pipes are connected. Thereby realizing the gradual grouting from the inside to the outside of the roadway.
9. The end slope mining gangue dumping filling grouting reinforcement construction process according to claim 2, characterized in that: the controller of the filling machine is placed outside the roadway, action signals are applied to the controller through cables, the filling machine is provided with a peeping instrument and a lighting system, and monitoring of the roadway environment is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029171.9A CN113847087A (en) | 2020-09-27 | 2020-09-27 | End slope mining gangue-throwing filling grouting reinforcement construction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029171.9A CN113847087A (en) | 2020-09-27 | 2020-09-27 | End slope mining gangue-throwing filling grouting reinforcement construction process |
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| CN113847087A true CN113847087A (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011029171.9A Withdrawn CN113847087A (en) | 2020-09-27 | 2020-09-27 | End slope mining gangue-throwing filling grouting reinforcement construction process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586139A (en) * | 2021-07-28 | 2021-11-02 | 北京文鼎兴源工程科技有限公司 | Combined construction process for throwing waste filling and pipeline grouting cementing |
| CN115749935A (en) * | 2022-11-29 | 2023-03-07 | 山东金恒力建工有限公司 | Continuous-mining throwing paste near-horizontal filling method |
-
2020
- 2020-09-27 CN CN202011029171.9A patent/CN113847087A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586139A (en) * | 2021-07-28 | 2021-11-02 | 北京文鼎兴源工程科技有限公司 | Combined construction process for throwing waste filling and pipeline grouting cementing |
| CN113586139B (en) * | 2021-07-28 | 2024-06-11 | 北京文鼎兴源工程科技有限公司 | Waste rock throwing filling and pipeline grouting cementing combined construction process |
| CN115749935A (en) * | 2022-11-29 | 2023-03-07 | 山东金恒力建工有限公司 | Continuous-mining throwing paste near-horizontal filling method |
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Application publication date: 20211228 |
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