CN216240788U - Pre-control top retaining wall protection type mechanized upward high-layering filling system - Google Patents

Pre-control top retaining wall protection type mechanized upward high-layering filling system Download PDF

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Publication number
CN216240788U
CN216240788U CN202122923784.3U CN202122923784U CN216240788U CN 216240788 U CN216240788 U CN 216240788U CN 202122923784 U CN202122923784 U CN 202122923784U CN 216240788 U CN216240788 U CN 216240788U
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filling
stope
ore
mining
roadway
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刘伟军
陈敏
龚永超
万孝衡
欧任泽
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Changsha Institute of Mining Research Co Ltd
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Changsha Institute of Mining Research Co Ltd
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Abstract

The utility model discloses a pre-control top-retaining wall type mechanized upward high-layering filling system, which divides a stope into a plurality of ore sections from bottom to top, divides any one ore section into a plurality of ore layers from bottom to top, adopts high-layering and layer-by-layer stoping from bottom to top, fills the ore layers after the stoping of the ore layers is finished, and adopts a long anchor rope as a support for the top ore layer plate of the uppermost layer which finishes the stoping after 3 to 4 ore layers are continuously stoped. Through the mode, the utility model combines the traditional upward layered filling method and the segmented filling method to change the height of the single layer into the height layer (the height of the double layer), thereby reducing the whole supporting cost and the engineering quantity, improving the production capacity of the stope, accelerating the production efficiency and shortening the operation cycle time of the stope.

Description

Pre-control top retaining wall protection type mechanized upward high-layering filling system
Technical Field
The utility model relates to the technical field of underground mine mining, in particular to a mechanical upward high-layering filling system with a pre-control top-retaining wall type.
Background
In the mining field, particularly for two-step pillar stopes, such ore bodies are subject to complex mining conditions. Two sides of the stope in the second step are filling bodies during stope in the second step, and the stope in the second step is influenced by bleeding of the filling bodies in the stope in the first step, insufficient strength of the filling bodies and the like. The strength of the filling body of the one-step stope is not enough to support the stability of the whole two-step stope, so that the stope recovery safety condition of the two-step stope is extremely poor. Namely, the quality of the filling body of the stope in one step does not reach the standard, and the phenomenon of collapse of the filling body occurs, so that the filling body in one step cannot meet the stoping requirements in two steps. The traditional mining method is difficult to adapt to the ore body mining at present.
The mining method sequentially divides panels and panel pillars along the direction of the broken ore body interlayer, and sequentially divides a one-step stope and a two-step stope in each panel along the vertical direction. And in the step, the stope of the stope is composed of two parallel routes in the horizontal direction, the number of the routes in the vertical direction is determined by the sectional height, and the stope is filled after mining is finished to form a cemented filling body replacement strip column. And after the stope of the stope room in the first step in the panel is completely mined, the stope is converted into stope mining of a stope pillar in the second step, one-step cemented filling bodies are arranged on two sides of the stope pillar in the second step, and the stope pillar stope mining in the second step adopts a high-efficiency mining method of long anchor cable pre-reinforced downward parallel deep hole subsection open stope subsequent filling. Although the method adopts the long anchor cable for pre-reinforcement of the two-step ore pillar stope and adopts the sectional mining filling method, the mining efficiency and the mining safety of the two-step ore pillar stope are improved to a certain extent, but the stoping and filling mode still adopts the traditional mode, the mining efficiency is not essentially improved, the strength of a filling body is poor, and certain potential safety hazard is brought to operating personnel.
Therefore, it is necessary to design a two-step mechanical upward high-layering filling mining system with simple structure, strong safety, high mining efficiency and strong production capacity.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems, the utility model provides a pre-control top-retaining wall type mechanized upward high-layering filling system, which divides a stope into a plurality of ore sections from bottom to top, divides any one ore section into a plurality of ore layers from bottom to top, adopts high-layering layer-by-layer stoping from bottom to top, fills the ore layers after the stoping of the ore layers is finished, and adopts a long anchor cable as a support for the top ore layer roof of the uppermost layer which finishes the stoping after 3 to 4 ore layers are continuously stoped. Therefore, the traditional upward layered filling method and the segmented filling method are combined, the height of the single layer is changed into the height of the high layer (double layer height), the integral supporting cost and the engineering quantity are reduced, the production capacity of the stope is improved, the production efficiency is accelerated, and the operation cycle time of the stope is shortened.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a mechanized upward high-level filling system of a pre-control top-retaining wall protection type adopts a two-step mechanized upward high-level filling mining method of the pre-control top-retaining wall protection type, and comprises a plurality of stopes arranged in parallel, a mine wall arranged on the peripheral wall of the stope, a roof arranged at the top end of the stope, and a long anchor cable pre-control top support arranged at the top end of the roof;
the stope comprises a plurality of mine sections which are sectionally arranged from bottom to top, the mine sections comprise a plurality of mine layers which are hierarchically arranged from bottom to top, and three adjacent mine sections which are sequentially arranged from bottom to top form a mining stratum.
Further, any one of the seams includes a lower filling area and an upper filling area arranged at the top end of the lower filling area; the lower filling area is used for filling low-strength-ratio cemented filling bodies, and the upper filling area is used for filling high-strength-ratio cemented filling bodies.
Further, the bottom ends of the three mine sections of the mining stratum positioned at the lowest part are provided with lower-wall vein-following transportation lanes along the horizontal direction, and the lower-wall vein-following transportation lanes are communicated through mining area slope roads arranged along the inclined direction; and one ends of the three groups of the lower tray vein-following conveying lanes positioned at the lowest position, which are far away from the mining area, are communicated through orepasses arranged along the vertical direction.
Furthermore, a middle section transportation lane is arranged at the connecting position of the lower-wall vein-following transportation lane and the mining area slope road at the upper end and the lower end of the mining stratum, and the middle section transportation lane and the lower-wall vein-following transportation lane are positioned in the same plane and are arranged in a vertical state; a segmented transportation lane is arranged at the connecting position of the lower-wall vein-following transportation lane and the mining area slope road at the middle position of the mining stratum, and the segmented transportation lane is communicated with the lower-wall vein-following transportation lane; and layered connecting lanes are arranged between the ore layer and the middle section transportation lane and between the ore layer and the subsection transportation lane.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model relates to a mechanical upward high-layering filling system with a pre-controlled top retaining wall guard, which divides a stope into a plurality of ore sections from bottom to top, divides any one ore section into a plurality of ore layers from bottom to top, adopts high-layering and layer-by-layer stoping from bottom to top, fills the ore layers after the stoping of the ore layers is finished, and adopts a long anchor cable as a support for the top plate of the uppermost ore layer which finishes the stoping after 3 to 4 ore layers are continuously stoped. Therefore, the traditional upward layered filling method and the segmented filling method are combined, the height of the single layer is changed into the height of the high layer (double layer height), the integral supporting cost and the engineering quantity are reduced, the production capacity of the stope is improved, the production efficiency is accelerated, and the operation cycle time of the stope is shortened.
2. The mechanized upward high-layering filling system with the pre-control top retaining wall type is used for reserving the mine wall with the corresponding thickness for the stope to perform stope in the two steps, so that the overall stability of the stope in the two steps is maintained, and the influences of insufficient strength of a filling body of the stope in the first step are reduced.
3. The mechanized upward high-layering filling system with the pre-control top retaining wall protection is characterized in that a long anchor cable is used as a support mode of the pre-control top to reinforce a top plate, so that pre-control reconstruction of the top plate is realized, and a top plate environment for safe operation of a high-layering stope is constructed.
4. The mechanized upward high-layering filling system with the pre-control top retaining wall protection structure has the advantages that the same ore bed is filled by different filling bodies, so that the filling cost is reduced, the bottom of the ore bed can be filled by the filling bodies with low strength proportion, the upper part of the ore bed adopts the pouring surface of the high-strength cemented filling body as a working platform of a scraper, and the operation condition of upward horizontal high-layering filling is constructed.
Drawings
FIG. 1 is a schematic diagram of the construction of a pre-controlled top retained retaining wall mechanized top-loading high level layered filling system of the present invention;
FIG. 2 is a schematic layout of a pre-controlled roof long tendon support of the pre-controlled roof retaining wall type mechanized up-fill system of the present invention;
FIG. 3 is a schematic sectional view taken along line II-II in FIG. 1;
FIG. 4 is a schematic sectional view taken along the direction III-III in FIG. 1;
FIG. 5 is a schematic flow diagram of the mechanized upward high-level packing method of the pre-controlled top-retained retaining wall of the present invention;
the parts in the drawings are numbered as follows: 11. a bottom pillar; 12. a stud; 13. a water filtration well; 14. horizontal blast holes; 15. filling a return air shaft; 16. a long anchor cable; 17. a filler body; 18. an ore body; 20. a mine section; 21. a seam; 22. a mine wall; 23. a middle section transportation lane; 24. a draw shaft; 25. a mining area ramp; 26. a lower-wall vein-following transportation lane; 27. a segmented transportation lane; 28. layering communication channels; 29. and (4) connecting roads in the stope.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 1 to 3, a mechanized top-loading high-level filling system 100 of a pre-controlled top-retaining wall type includes several stopes arranged in parallel, a mine wall 22 arranged on the outer peripheral wall of the stope, a roof arranged on the top end of the stope, and a long anchor cable 16 arranged on the top end of the roof for pre-controlling top support. The thickness of the mine wall 22 is set to be 2-3 m, so that the overall stability of the two-step stope is maintained, and the influence of insufficient strength of the filling body 17 of the one-step stope is reduced. The long anchor cable 16 pre-control top support can reinforce the top plate so as to realize pre-control reconstruction of the top plate and construct a top plate environment for high-layering stope safety operation. Particularly, the height of the long anchor cable 16 pre-control top support is 3-4 ore beds 21, and the mesh degree of the long anchor cable 16 pre-control top support is set to be 3.0 multiplied by 2.5 m. I.e. the row spacing of the anchor cables is 3.0m and the spacing is 2.5m, and the stoping operation of the next mine layer 21 can be carried out after the safety of the stope support is confirmed.
As shown in fig. 3-4, in some embodiments, any one of the stopes includes a plurality of mine sections 20 arranged in bottom-to-top segments, and any one of the mine sections 20 includes a plurality of mine layers 21 arranged in bottom-to-top tiers. Particularly, the height of the ore section 20 is 20m, and the height of the ore bed 21 is 4-6 m. The height of the layered roof control is 6-8 m, and the mining height of the lowest ore bed 21 is 6-8 m.
The layered filling height of the ore bed 21 is 2-3 m, and cemented filling is performed after layered stoping is finished each time. Any seam 21 includes a lower filling zone and an upper filling zone disposed at the top of the lower filling zone. The lower filling area is used for filling the low-strength-ratio cemented filling body 17, and the upper filling area is used for filling the high-strength-ratio cemented filling body 17. And different filling bodies 17 are adopted to fill the same ore bed 21, so that the filling cost can be reduced. The bottom of the ore bed 21 can be filled by adopting the filling body 17 with low strength proportion, and the upper part of the ore bed 21 adopts the pouring surface of the high-strength cemented filling body 17 as a platform for the scraper to work, so as to construct the operation condition of filling horizontally and highly in layers.
As shown in fig. 3 to 4, in some embodiments, three adjacent mine sections 20 located at the lowest position constitute a lower-tray mining level, the bottom ends of the three mine sections 20 located at the same mining level are provided with lower-tray vein haulage lanes 26 in the horizontal direction, and the lower-tray vein haulage lanes 26 are communicated through mining slope roads 25 arranged in the inclined direction, so as to realize the communication of the mine sections 20. The ends of the three groups of lower tray vein-following conveying lanes 26 which are positioned at the lowest part and far away from the mining area are communicated through a drop shaft 24 which is arranged along the vertical direction. The drop shafts 24 are arranged every 100-150 m outside the vein.
And a middle section transportation lane 23 is arranged at the connecting position of the lower-tray vein-following transportation lane 26 and the mining area slope ramp 25 at the upper end and the lower end of the mining level, and the middle section transportation lane 23 is communicated with the lower-tray vein-following transportation lane 26 so as to communicate different stopes. And a segmented transport roadway 27 is arranged at the connecting position of the lower-wall vein-following transport roadway 26 at the middle position of the mining level and the mining area slope ramp 25, and the segmented transport roadway 27 is communicated with the lower-wall vein-following transport roadway. A layered communication road 28 is provided between the seam 21 and the middle section transportation lane 23 and the subsection transportation lane 27 to communicate the stope with the subsection transportation lane 27. Each stope is communicated with the footwall vein transport lane 26 through a stope communication lane 29.
As shown in fig. 3-4, and with reference to fig. 1, in some embodiments, the top end of the ore body 18 is provided with a charge air return shaft 15 in the vertical direction. And the two ends of the left side of the stope are provided with water filtering wells 13. Fresh air enters the stope from the bottom end of the water filter well 13 to clean the working face. Meanwhile, the dirty air returns to the upper middle section return airway from the filling return airway 15. The auxiliary ventilation of the local fan can be realized in the stope, and a good operation environment is ensured.
As shown in fig. 5, a two-step mechanized upward high-layering filling mining method of the pre-control top-retaining wall type of the mechanized upward high-layering filling system adopting the pre-control top-retaining wall type comprises the following steps:
and S1, dividing the two-step stud 12 into a plurality of stopes, and arranging the mine wall 22 between two adjacent stopes.
In the step, the width of the reserved stud 12 is set to be 4-6 m, the stope is arranged along the trend of the ore body 18, the length of the stope is set to be 40m, the width of the stope is set to be 12m, and the thickness of the ore wall 22 is 2-3 m.
And S2, dividing any stope into a plurality of ore sections 20 from bottom to top, and dividing any ore section 20 into a plurality of ore layers 21 from bottom to top.
In the step, the stope is divided into an upper mining stratum, a middle mining stratum and a lower mining stratum from top to bottom, and the height of a single mining stratum is 40-60 m. Each mine level includes a plurality of mine sections 20. The height of the ore section 20 is 20m, and the height of the ore bed 21 is 4-6 m. When the stope. The bottom of stope is provided with the foundation 11, and the height of foundation 11 sets up to 6m to do not set up the fore-set.
And S3, cutting the stope, and arranging a pre-control top support at the upward high-layering top plate of the stope.
In the step, the pre-controlled top support is a long anchor cable 16 pre-controlled top support, the height of the long anchor cable 16 pre-controlled top support is 3-4 ore beds 21, and the mesh degree of the long anchor cable 16 pre-controlled top support is set to be 3.0 multiplied by 2.5 m. I.e. the row spacing of the anchor cables is 3.0m and the spacing is 2.5m, and the stoping operation of the next mine layer 21 can be carried out after the safety of the stope support is confirmed.
And S4, carrying out extraction on the ore layer 21 positioned at the lowest layer.
And S5, filling the ore bed 21 after the last stoping, and stoping the ore bed 21 which is positioned at the upper layer of the ore bed 21 after the filling is finished.
In the step, the stoping adopts a mode of fully stoping along the trend of the ore body 18, and high-layering and layer-by-layer stoping from bottom to top is carried out, wherein the layering top control height is 6-8 m, and the mining height of the lowest ore layer 21 is 6-8 m.
The recovery process comprises two stages of rock drilling and blasting. Specifically, a Boomer281 full hydraulic drill jumbo is adopted to mechanically and intelligently drill a horizontal blast hole 14 so as to improve the drilling efficiency. And the pressing top adopts matt surface to control blasting, so that the top plate is ensured to be smooth and stable. After the rock drilling is finished, blast holes are cleaned, manual charging is adopted, the explosive adopts 2# rock explosive, an initiator triggers a detonating tube detonator, the detonating tube detonator then detonates the detonating cord, and the detonating tube detonator laid in each blast hole is detonated by the detonating cord to detonate the explosive.
The ore is transported by a scraper, the scraper enters a stope from a subsection transportation lane 27 through a layering communication lane 28 for ore loading, and the ore is directly unloaded to an out-of-sea chute 24 after being shoveled and transported to a main chute 24 through an electric locomotive. When the stope down-the-road ore pass 24 is exposed, ore is removed from the intra-vein down-the-road ore pass 24.
In the step, each ore bed 21 is filled in a grading manner, the filling height is 2-3 m, and a 2-3 m stoping space is reserved for the next ore bed 21. The bottom of the ore bed 21 is filled by adopting a cementing filling body 17 with low strength proportion; the top of the ore bed 21 is filled with a high-strength proportioned cemented filling body 17, and the filling height is 0.5-1 m. The upper part of the ore bed 21 adopts the pouring surface of the high-strength cemented filling body 17 as a platform for the scraper to work, and the operation condition of upward horizontal high-layered filling is constructed.
The filling is to perform preparation and filling operations according to the filling requirement after the ore cleaning of each ore bed 21 is completed. And building a filling retaining wall in the layered connection roadway, enabling a filling pipeline to enter each stope from a filling return air shaft 15 of each stope for filling, and reserving an operation space of 2-3 m. The underground tunneling waste rock can be filled in the goaf nearby, and the waste rock in the stope is left in the stope for filling.
And S6, repeating the step S5 until 3-4 ore layers 21 are continuously mined.
And S7, arranging a pre-controlled roof support at the top plate of the uppermost mine layer 21 after the recovery is finished.
In the step, the pre-controlled top support adopts a support mode of the long anchor cable 16, and after 3-4 ore layers 21 are mined, the long anchor cable 16 is installed to pre-control the top support, so that the safety of the mining and filling process can be ensured.
And S8, repeating the steps S5, S6 and S7 in sequence until the roof of the stope is mined.
The above description is only for the purpose of illustrating the technical solutions of the present invention and is not intended to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent processes performed by using the contents of the specification and the drawings of the utility model, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (4)

1. A mechanized upward high-layering filling system with a pre-control top retaining wall protection type is characterized by comprising a plurality of stopes arranged in parallel, a mine wall (22) arranged on the outer peripheral wall of each stope, a top plate arranged at the top end of each stope, and a long anchor cable (16) pre-control top support arranged at the top end of each top plate;
the mining stope comprises a plurality of mine sections (20) which are sectionally arranged from bottom to top, wherein any one of the mine sections (20) comprises a plurality of mine layers (21) which are hierarchically arranged from bottom to top, and three adjacent mine sections (20) which are sequentially arranged from bottom to top form a mining stratum.
2. A mechanized upward high-level filling system of a pre-controlled top-retained retaining wall type according to claim 1, characterized in that any one of the mineral layers (21) comprises a lower filling zone and an upper filling zone disposed at a top end of the lower filling zone; the lower filling area is used for filling low-strength-ratio cemented filling bodies (17), and the upper filling area is used for filling high-strength-ratio cemented filling bodies (17).
3. The mechanized upward high-rise cut-and-fill system of a pre-controlled top-retention retaining wall type according to claim 2, characterized in that the bottom ends of the three mine sections (20) of the lowest mining level are provided with a footwall vein haulage roadway (26) in a horizontal direction, the footwall vein haulage roadway (26) being communicated by a panel ramp (25) provided in an inclined direction; and one ends of the three groups of the lower tray vein-following conveying lanes (26) which are positioned at the lowest part and far away from the mining area are communicated through a drop shaft (24) which is arranged along the vertical direction.
4. The mechanized top-loading high-bay filling system of claim 3, wherein a middle section roadway (23) is provided at a connection position of the footwall vein roadway (26) and the stope ramp (25) at the upper and lower ends of the mining level, the middle section roadway (23) and the footwall vein roadway (26) are located in the same plane and are arranged in a vertical state with respect to each other; a segmented transportation roadway (27) is arranged at the connecting position of the lower-wall vein transportation roadway (26) and the mining area slope ramp (25) at the middle position of the mining level, and the segmented transportation roadway (27) is communicated with the lower-wall vein transportation roadway (26); a layered connecting road (28) is arranged between the ore layer (21) and the middle section transportation lane (23) and the subsection transportation lane (27).
CN202122923784.3U 2021-11-25 2021-11-25 Pre-control top retaining wall protection type mechanized upward high-layering filling system Active CN216240788U (en)

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CN202122923784.3U CN216240788U (en) 2021-11-25 2021-11-25 Pre-control top retaining wall protection type mechanized upward high-layering filling system

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Application Number Priority Date Filing Date Title
CN202122923784.3U CN216240788U (en) 2021-11-25 2021-11-25 Pre-control top retaining wall protection type mechanized upward high-layering filling system

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