CN208236413U - A kind of shaft construction device - Google Patents
A kind of shaft construction device Download PDFInfo
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- CN208236413U CN208236413U CN201820740463.5U CN201820740463U CN208236413U CN 208236413 U CN208236413 U CN 208236413U CN 201820740463 U CN201820740463 U CN 201820740463U CN 208236413 U CN208236413 U CN 208236413U
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Abstract
The utility model discloses a kind of shaft construction devices, including elevator, sinking winch, sinking headframe, sheave wheel platform, turn over gangue dumping platform, closure plate, hanging scaffold, hanging scaffold is equipped with power supplying and distributing equipment, hydraulic-pressure control apparatus, drainage equipment, ash divider, ash divider is equipped with sliding cement pipe, is provided with below hanging scaffold without the suspention seamless template of step type；It include upper support boots, straight template one, straight template two, lower support boots without the suspention seamless template of step type, upper support boots are connected with straight template one by oil cylinder of taking a step, and upper support boots are connected by wirerope with lower support boots；Blade foot is equipped between straight template two, lower support boots；Vertical shaft lining machine is arranged in lower section without the suspention seamless template of step type.The utility model is tunneled and is slagged tap using tunneling boring vertical shaft lining machine, realizes complete mechanical, is realized shaft of vertical well parallel performance of driving and masonry using without the suspention seamless template of step type, is shortened construction working hour, improve construction efficiency.
Description
Technical field
The utility model relates to shaft mineshaft construction field, specifically a kind of shaft construction device.
Background technique
Current all kinds of shaft mineshaft constructions, topsoil driving and masonry construction mostly use the matched vertical short section pick of comprehensive mechanization to build
Mixed operation is excavated using excavator, and grab loader cooperation well-bucket goes out cash, the integrated hydraulic of ground stable car, wire rope suspensioning
Template builds wall, concreting bottom discharge bucket feeding, and hanging scaffold is installed fixed concentration ash divider progress subregion and symmetrically poured, just
The high 3.6m of section is built in pick in normal situation.Each normal cyclic needs 18 hours or so.
Rock section uses mixture operation form of construction work, is tunneled using drilling and blasting method, and umbrella, which bores, matches rock drill rock drilling, quick-fried using deep hole
Broken technology explosion, grab loader cooperation well-bucket go out cash, build wall and bulk metal is selected to move down template, a height of 3.6m of wall section is built, with deep hole
Light is quick-fried to be combined, and realizes that normal cyclic operation is built in a pick one.Each normal cyclic needs 22 hours or so.
The problem of mixture operation form of construction work is primarily present is built in vertical pick:
1, topsoil is manually cut the earth using artificial shoveling or Miniature digging machine cooperation, and rock section uses hand-holing, explosion
Method driving, grab loader or Miniature digging machine are slagged tap, and labor intensity of workers is big, and mechanization degree is low；
2, work space of planes parallel construction cannot be made full use of, each circulation construction time is longer；
3, working face explosion position distance pours that complete concrete soon closer, causes to young concrete certain
Vibration damage；
4, blast working destroys Sidewall Surrounding Rock larger, and explosive forming is poor, causes supporting difficulty big, support material and supporting
Increased costs.
5, rock drilling and muck discharging process underground noise and dust are big, and working environment is poor.
Summary of the invention
For the defect for solving the above-mentioned prior art, the utility model provides a kind of shaft construction device, and the utility model is adopted
It is tunneled and is slagged tap with tunneling boring vertical shaft lining machine, realized complete mechanical, realize shaft of vertical well parallel performance of driving and masonry, shortened
Construction working hour, improve construction efficiency.
The technical solution adopted in the utility model: a kind of shaft construction device, including elevator, sinking winch, sinking shaft well
Frame, sheave wheel platform turn over gangue dumping platform, closure plate, hanging scaffold, and the hanging scaffold is set equipped with power supplying and distributing equipment, hydraulic-pressure control apparatus, draining
Standby, ash divider, the ash divider are equipped with sliding cement pipe, are provided with below the hanging scaffold without the suspention seamless template of step type；Institute
Stating without the suspention seamless template of step type includes upper support boots, straight template one, straight template two, lower support boots, the upper support boots and straight template
One is connected by wirerope with lower support boots by oil cylinder connection of taking a step, the upper support boots；It is set between the straight template two, lower support boots
There is blade foot；Shaft excavation machine is arranged in the lower section without the suspention seamless template of step type.
Preferably, the upper support boots include straight module and flexible module；The two sides of the flexible module are equipped with the left mould that stretches
Block and flexible right mould block；The middle part of the flexible module is equipped with left pressing plate one and right pressing plate one, the left pressing plate one and right pressing plate
One is connected by double end high-strength bolt and caging bolt seat one, and the right pressing plate one is connected by hydraulic cylinder one and flexible right mould block
It connects, the hydraulic cylinder one is connected on flexible right mould block by pin shaft and axle bed.
Preferably, the straight template one includes the flexible module of straight template；It is described to be equipped with silica gel plate, in the silica gel plate two
Side is respectively equipped with left telescopic component and right telescopic component, and the flexible module of the straight template is equipped with left pressing plate two and right pressing plate, described
It is connected between left telescopic component and right telescopic component by hydraulic cylinder two, the otic placode of the hydraulic cylinder two is connected to the right side by pin shaft
On telescopic component；The left pressing plate two is connected by caging bolt seat two with caging bolt with right pressing plate.
Preferably, the lowermost end of the shaft excavation machine is equipped with tunneling boring cutterhead, and the top of the tunneling boring cutterhead is equipped with
Debris collector, the debris collector are connected by vertical bucket type belt with interim feed bin, and the side of the interim feed bin is set
There is debris discharge port, is hung with well-bucket at the material mouth of the debris discharge port；Rigid staybolt boots are additionally provided on the shaft excavation machine
And stabilizer.
The utility model has the beneficial effects that 1, using tunneling boring vertical shaft lining machine tunnel and slag tap, realize complete mechanical
Change, labor intensity of workers is low；
2, shaft of vertical well parallel performance of driving and masonry is realized using without the suspention seamless template of step type, shortens construction working hour,
Improve construction efficiency；
3, it realizes and builds wall far from working face, reduce the damage to formation of concrete, reduce template suspension wirerope
And suspention stable car；
4, it is larger to Sidewall Surrounding Rock destruction to avoid blast working, explosive forming is poor, and supporting difficulty is big, support material and branch
Protect increased costs.
5, rock drilling and muck discharging process underground noise and dust have obtained effective control, substantially improve the building ring of worker
Border.
Detailed description of the invention
Fig. 1 is the utility model overall construction drawing；
Fig. 2 is the utility model construction plan；
Fig. 3 is the utility model ground installation partial schematic diagram；
Fig. 4 is sheave wheel platform schematic diagram；
Fig. 5 is hanging scaffold schematic diagram；
Fig. 6 is without the suspention seamless template schematic diagram of step type；
Fig. 7 is shaft excavation machine schematic diagram；
Fig. 8 is upper support boots schematic diagram；
Fig. 9 is the flexible module diagram of upper support boots；
Figure 10 is AA sectional view in Fig. 9；
Figure 11 is the flexible module diagram of straight template one；
Figure 12 is BB sectional view in Figure 11；
Figure label explanation: 1, elevator, 2, sinking winch, 3, sinking headframe, 4, sheave wheel platform, 5, turn over gangue dumping platform, 6,
Closure plate, 7, hanging scaffold, 71, hanging scaffold guiding device, 72, hanging scaffold column, 8, without suspention the seamless template of step type, 81, upper support boots,
82, it takes a step oil cylinder, 83, straight template one, 84, straight template two, 85, blade foot, 86, lower support boots, 87, wirerope, 9, shaft excavation machine,
91, tunneling boring cutterhead, 92, debris collector, 93, stabilizer, 94, vertical bucket type belt, 95, rigid staybolt boots, 96, interim material
Storehouse, 97, debris discharge port, 10, well-bucket, 11, power supplying and distributing equipment, 12, hydraulic-pressure control apparatus, 13, drainage equipment, 14, ash divider,
15, sliding cement pipe, 16, automobile, 17, water supplying pipe, 18, pressure ventilation pipe, 19, drainpipe, 20, cable pipeline one, 21, main lifting bucket, 22,
It is main to mention steady rope, 23, sleeping pump, 24, cable pipeline two, 25, air duct, 26, cable pipeline three, 27, pair mention steady rope, 28, secondary lifting bucket,
29, emergency staircase, 30, straight module, 31, flexible module, 3101, left module of stretching, 3102, left pressing plate one, 3103, right pressing plate one,
3104, pin shaft, 3105, axle bed, 3106, flexible right mould block, 3107, hydraulic cylinder one, 3108, caging bolt seat one, 3109, double end
High-strength bolt, 32, the flexible module of straight template, 3201, left telescopic component, 3202, silica gel plate, 3203, left pressing plate two, 3204, the right side
Pressing plate two, 3205, right telescopic component, 3206, hydraulic cylinder two, 3207, caging bolt seat two, 3208, caging bolt, 3209, ear
Plate.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The attached drawing of type embodiment carries out clear, complete description, it is clear that described to the technical scheme in the embodiment of the utility model
Embodiment be the utility model a part of the embodiment, instead of all the embodiments.Usually describes and show in attached drawing here
The component of the utility model example out can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but be merely representative of be the utility model selected embodiment.It is practical based on this experiment
Novel embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.
Embodiment
Fig. 1 is the overall construction drawing of the utility model.
As shown in figure 3, figure 4 and figure 5, a kind of shaft construction device, including elevator 1, sinking winch 2, sinking headframe 3, day
Wheel platform 4 turns over gangue dumping platform 5, closure plate 6, hanging scaffold 7, and hanging scaffold 7 is set equipped with power supplying and distributing equipment 11, hydraulic-pressure control apparatus 12, draining
Standby 13, ash divider 14, ash divider 14 are equipped with sliding cement pipe 15.As shown in fig. 6, the lower section of hanging scaffold 7 is provided with without suspention step type
Seamless template 8；Include upper support boots 81, straight template 1, straight template 2 84, lower support boots 86 without the suspention seamless template 8 of step type, on
Support boots 81 and straight template 1 are connected by oil cylinder 82 of taking a step, and upper support boots 81 are connected by wirerope 87 and lower support boots 86；Straight mould
Blade foot 85 is equipped between plate 2 84, lower support boots 86；87 lower end of wirerope is connected with hydraulic drum.Without the suspention seamless template of step type
Shaft excavation machine 9 is arranged in 8 lower section.
As described in Fig. 8, Fig. 9 figure, Figure 10, upper support boots 81 include straight module 30 and flexible module 31；The two of flexible module 31
Side is equipped with stretch left module 3101 and flexible right mould block 3106；The middle part of flexible module 31 is equipped with left pressing plate 1 and right pressing plate
One 3103, left pressing plate 1 and right pressing plate 1 are connected by double end high-strength bolt 3109 and caging bolt seat 1,
Right pressing plate 1 is connected by hydraulic cylinder 1 and flexible right mould block 3106, and hydraulic cylinder 1 passes through pin shaft 3104 and axis
Seat 3105 is connected on flexible right mould block 3106.
Straight template 1 includes the flexible module 32 of straight template；As described in Figure 11, Figure 12, the flexible module 32 of straight template is equipped with
Silica gel plate 3202,3202 liang of insides of silica gel plate are respectively equipped with left telescopic component 3201 and right telescopic component 3205, and straight template is flexible
Module 32 is equipped with left pressing plate 2 3203 and right pressing plate 3204, by hydraulic between left telescopic component 3201 and right telescopic component 3205
Cylinder 2 3206 connects, and the otic placode 3209 of hydraulic cylinder 2 3206 is connected on right telescopic component 3205 by pin shaft；Left pressing plate two
3203 and right pressing plate 3204 connected by caging bolt seat 2 3207 and caging bolt 3208.
As shown in fig. 7, the lowermost end of shaft excavation machine 9 is equipped with tunneling boring cutterhead 91, the top of tunneling boring cutterhead 91 is equipped with
Debris collector 92, debris collector 92 are connected by vertical bucket type belt 94 with interim feed bin 96, the side of interim feed bin 96
Equipped with debris discharge port 97, well-bucket 10 is hung at the material mouth of debris discharge port 97；Rigid staybolt boots are additionally provided on shaft excavation machine 9
95 and stabilizer 93.
Lower support boots 86, the structure of rigid staybolt boots 95 are identical as the upper support structure of boots 81.The structure of straight template 2 84 and straight mould
The structure of plate 1 is identical.
As shown in figure 5, being equipped with hanging scaffold guiding device 71 on the downside of the first layer of hanging scaffold 7, the second layer is equipped with power supplying and distributing equipment 11,
Third layer is equipped with hydraulic-pressure control apparatus 12, and the 4th layer is equipped with drainage equipment 13, and layer 5 is equipped with ash divider 14.Hanging scaffold 7 is by hanging
Disk column 72 is fixed.Sliding cement pipe 15 extends downwardly on the borehole wall of surrounding along ash divider 14.
As shown in Fig. 2, the utility model is equipped with emergency staircase 29 in the side of pit shaft, and fixed by safety rope, together
When be installed water supplying pipe 17, pressure ventilation pipe 18, drainpipe 19, main lifting bucket 21, sleeping pump 23, air duct 25, secondary lifting bucket 28, master mentions
Well-bucket 21 and secondary lifting bucket 28 propose steady 27 connection of rope with main surely rope 22, the pair of mentioning respectively.Hanging scaffold rope, signal cable, leads to light conduits
News cable, power cable, industrial monitoring cable are mounted on cable pipeline 1, cable pipeline 2 24, cable as requested respectively
In pipeline 3 26.
The utility model using tunneling boring vertical shaft lining machine driving, collect spoil, be transported to interim feed bin after pass through discharging
Mouth, which is unloaded to well-bucket, goes out cash.
Wall is built using without the seamless template 8 of suspention step type.Boots 81 and straight template 1 are supportted first on stretching, utilize hydraulic rolling
Cylinder drives and straightens template 2 84 and lower support boots 86 under wirerope 87；After transferring 8m, boots 86 are supportted under stretching, are poured using straight template 2 84
Build the 4m borehole wall；Concreting completion and final set and after reaching some strength, straight one 83 stretching of template, upper support boots 81 move down 4m,
Boots 81 are supportted on stretching again, straight one 83 distance 4m of template is moved down, pours upper section 4m, complete a circulation.Vertical shaft lining machine driving with
Template build wall can simultaneously operation, improve construction efficiency.
Sinking headframe 3 is selected according to mine shaft depth and diameter, promotes 1 and sinking winch 2；According to pit shaft horizontal layout head sheave
Platform 4 turns over cash platform 5, closure plate 6 and hanging scaffold 7；Step type template each section diameter is determined according to mineshaft diameter.Ground is completed to face
When facility and sinking shaft measures engineering after, start pit shaft examination dig.Examination dig complete 50m after, in order decentralization installation shaft excavation machine 9,
Without the seamless template 8 of suspention step type, hanging scaffold 7, closure plate 6 is finally installed.Meanwhile it being installed each ventilation, supplying water, drainpipe
Road, emergency staircase and illumination, signal, communication, power cable.In two, three layer arrangement power supplying and distributing equipments 11 of hanging scaffold 7 and hydraulic control
Equipment 12 arranges casting concrete ash divider 14 in lowest level hanging scaffold in four layer arrangement drainage equipment 13.
After construction equipment and ancillary equipment are installed, start pick and build cycle operation.
Tunneling capital equipment is tunneling boring shaft excavation machine 9, is first fixed on the borehole wall, position adjustment with 4 rigid staybolt boots 95
After good, 8 stabilizers 93, which strut, is fixed on the borehole wall, the stabilization of development machine and pit shaft pick when main function is to ensure that cutting operation
Into the correction of deflection.
Face rock is cut with tunneling boring cutterhead 91, the debris cut down is conveyed by debris collector 92 into vertical
It is fed directly to interim feed bin 96 after bucket type belt 94, debris is discharged to by well-bucket 10, hoppet 10 by quarrel stone discharge port 97
Spoil is promoted to ground, unloads to cash platform chute (turning over gangue dumping platform 5) is turned over, passes through 16 discharge refuse of ground dump truck afterwards.
After tunneling certain section height, wall is built using without the seamless template 8 of suspention step type.Upper support boots 81 are used with straight template 1
It takes a step the connection of oil cylinder 82, straight template 2 84 is connected by screw bolts with lower support boots 86, above and below support boots hydraulic drum and wirerope 87
Connection.Firstly, upper support boots 81 and one 83 stretching of straight template carry out safety detection on the borehole wall poured, to clamping force,
Using straightening template 2 84 and lower support boots 86 to straight under the hydraulic drum and suspending steel wire rope 87 for being fixed on lower support boots 86 after qualification
8 meters (2 template segment height) below the lower mouth of template 1.Boots 86 are supportted under stretching, align 85 template position of straight template 2 84 and blade foot,
The symmetrical casting concrete of sliding cement pipe 15 is done with 4 spring hoses.After straight 2 84 concreting of template is completed and reaches final set, open
Template 1 is straightened under beginning.First upper 81 clamping force of support boots is detected, is passed through after qualified using oil cylinder 82 of taking a step and is taken a step twice,
All upper 81 clamping force of support boots is detected by taking a step oil cylinder 82 before taking a step every time, can be taken a step after reaching design parameter,
It is suitable for reading to straight template 2 84 that template 1 is straightened under until, does the symmetrical casting concrete of sliding cement pipe 15 with 4 spring hoses.Coagulation
After native intensity is met the requirements, start next block wall circulation.
Compared with prior art, the utility model is tunneled and is slagged tap using tunneling boring vertical shaft lining machine, realizes complete machine
Tool, labor intensity of workers are low；Shaft of vertical well parallel performance of driving and masonry is realized using without the suspention seamless template of step type, is shortened
It constructs working hour, improves construction efficiency；It realizes and builds wall far from working face, reduce the damage to formation of concrete, reduce
Template suspension wirerope and suspention stable car；It is larger to Sidewall Surrounding Rock destruction to avoid blast working, explosive forming is poor, supporting difficulty
Greatly, support material and support cost increase；Rock drilling and muck discharging process underground noise and dust have obtained effective control, substantially improve
The working environment of worker.
The above is only the better embodiment to the utility model, not makees any form to the utility model
On limitation, all according to the technical essence of the utility model any simple modification made to the above embodiment, equivalent variations
With modification, it is all within the scope of the technical scheme of the utility model.
Claims (4)
1. a kind of shaft construction device, including elevator (1), sinking winch (2), sinking headframe (3), sheave wheel platform (4), turn over cash
Platform (5), closure plate (6), hanging scaffold (7), the hanging scaffold (7) are equipped with power supplying and distributing equipment (11), hydraulic-pressure control apparatus (12), row
Wetting system (13), ash divider (14), the ash divider (14) are equipped with sliding cement pipe (15), it is characterised in that: the hanging scaffold (7)
Lower section is provided with without the suspention seamless template of step type (8)；It is described without suspention the seamless template of step type (8) include upper support boots (81),
Straight template one (83), straight template two (84), lower support boots (86), the upper support boots (81) and straight template one (83) pass through oil cylinder of taking a step
(82) it connects, the upper support boots (81) are connected by wirerope (87) and lower support boots (86)；The straight template two (84), lower support boots
(86) blade foot (85) are equipped between；
Shaft excavation machine (9) are arranged in the lower section without the suspention seamless template of step type (8).
2. a kind of shaft construction device according to claim 1, it is characterised in that: the upper support boots (81) include straight module
(30) and flexible module (31)；The two sides of the flexible module (31) are equipped with stretch left module (3101) and flexible right mould block
(3106)；The middle part of the flexible module (31) is equipped with left pressing plate one (3102) and right pressing plate one (3103), the left pressing plate one
(3102) it is connected with right pressing plate one (3103) by double end high-strength bolt (3109) and caging bolt seat one (3108), the right pressure
Plate one (3103) is connected by hydraulic cylinder one (3107) and flexible right mould block (3106), and the hydraulic cylinder one (3107) passes through pin shaft
(3104) it is connected on flexible right mould block (3106) with axle bed (3105).
3. a kind of shaft construction device according to claim 1, it is characterised in that: the straight template one (83) includes straight mould
Plate stretches module (32)；Described to be equipped with silica gel plate (3202), (3202) two inside of silica gel plate is respectively equipped with left flexible group
Part (3201) and right telescopic component (3205), the straight template stretch module (32) equipped with left pressing plate two (3203) and right pressing plate
(3204), it is connected between the left telescopic component (3201) and right telescopic component (3205) by hydraulic cylinder two (3206), it is described
The otic placode (3209) of hydraulic cylinder two (3206) is connected on right telescopic component (3205) by pin shaft；The left pressing plate two (3203)
It is connected with right pressing plate (3204) by caging bolt seat two (3207) and caging bolt (3208).
4. a kind of shaft construction device according to claim 1, it is characterised in that: the most bottom of the shaft excavation machine (9)
End is equipped with tunneling boring cutterhead (91), and the top of the tunneling boring cutterhead (91) is equipped with debris collector (92), and the debris is collected
Device (92) is connected by vertical bucket type belt (94) with interim feed bin (96), and the side of the interim feed bin (96) is unloaded equipped with debris
Material mouth (97) is hung with well-bucket (10) at the material mouth of the debris discharge port (97)；It is additionally provided on the shaft excavation machine (9) solid
Surely boots (95) and stabilizer (93) are supportted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820740463.5U CN208236413U (en) | 2018-05-18 | 2018-05-18 | A kind of shaft construction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820740463.5U CN208236413U (en) | 2018-05-18 | 2018-05-18 | A kind of shaft construction device |
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| Publication Number | Publication Date |
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| CN208236413U true CN208236413U (en) | 2018-12-14 |
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ID=64579767
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| CN201820740463.5U Active CN208236413U (en) | 2018-05-18 | 2018-05-18 | A kind of shaft construction device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533268A (en) * | 2018-05-18 | 2018-09-14 | 中煤第五建设有限公司 | A kind of shaft construction device and its application method |
| CN110118084A (en) * | 2019-05-31 | 2019-08-13 | 东北大学 | A kind of ultra-deep shaft shaft construction method |
| CN110145312A (en) * | 2019-06-06 | 2019-08-20 | 中国铁建重工集团股份有限公司 | Stabilizer and shaft heading machine |
| CN110206546A (en) * | 2019-07-12 | 2019-09-06 | 中国铁建重工集团股份有限公司 | Shaft cutter head, shaft heading machine and shaft drilling machine |
| CN112160753A (en) * | 2020-09-28 | 2021-01-01 | 牌洪坤 | Roadway tunneling mining method taking gold-steel sand line cutting as premise |
| CN115182734A (en) * | 2022-08-25 | 2022-10-14 | 煤炭工业合肥设计研究院有限责任公司 | Full hydraulic formwork device for building wall of vertical shaft |
-
2018
- 2018-05-18 CN CN201820740463.5U patent/CN208236413U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533268A (en) * | 2018-05-18 | 2018-09-14 | 中煤第五建设有限公司 | A kind of shaft construction device and its application method |
| CN108533268B (en) * | 2018-05-18 | 2024-04-26 | 中煤第五建设有限公司 | Vertical shaft construction device and use method thereof |
| CN110118084A (en) * | 2019-05-31 | 2019-08-13 | 东北大学 | A kind of ultra-deep shaft shaft construction method |
| CN110145312A (en) * | 2019-06-06 | 2019-08-20 | 中国铁建重工集团股份有限公司 | Stabilizer and shaft heading machine |
| CN110206546A (en) * | 2019-07-12 | 2019-09-06 | 中国铁建重工集团股份有限公司 | Shaft cutter head, shaft heading machine and shaft drilling machine |
| CN110206546B (en) * | 2019-07-12 | 2021-08-10 | 中国铁建重工集团股份有限公司 | Shaft cutter head, shaft heading machine and shaft drilling machine |
| CN112160753A (en) * | 2020-09-28 | 2021-01-01 | 牌洪坤 | Roadway tunneling mining method taking gold-steel sand line cutting as premise |
| CN115182734A (en) * | 2022-08-25 | 2022-10-14 | 煤炭工业合肥设计研究院有限责任公司 | Full hydraulic formwork device for building wall of vertical shaft |
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