CN111173516A - Shaft heading machine and slag discharging device thereof - Google Patents
Shaft heading machine and slag discharging device thereof Download PDFInfo
- Publication number
- CN111173516A CN111173516A CN202010010202.XA CN202010010202A CN111173516A CN 111173516 A CN111173516 A CN 111173516A CN 202010010202 A CN202010010202 A CN 202010010202A CN 111173516 A CN111173516 A CN 111173516A
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- Prior art keywords
- slag
- belt conveyor
- sleeve
- vertical
- vertical belt
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- 239000002893 slag Substances 0.000 title claims abstract description 140
- 238000007599 discharging Methods 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000010079 rubber tapping Methods 0.000 claims description 21
- 230000005641 tunneling Effects 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 15
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a shaft boring machine and a slag discharging device thereof, wherein the slag discharging device mainly comprises a vertical belt conveyor, one end of the vertical belt conveyor is a material receiving end which vertically penetrates through the boring machine and is arranged in a pilot tunnel below a cutter head of the boring machine, the other end of the vertical belt conveyor is a material discharging end which is transversely arranged and is positioned above the cutter head, a sleeve is fixedly sleeved outside the material receiving end, the sleeve part is arranged in the pilot tunnel, the outer wall of the sleeve is attached to the pilot tunnel, one side of the sleeve is provided with a feeding hole for slag to enter, and the feeding hole is connected with a guide hopper for guiding slag to a slag conveying belt; when a cutter head of the tunneling machine operates, generated slag firstly slides downwards to the central pilot tunnel along a tunnel face with a certain gradient, then enters the sleeve through the feeding hole and is guided onto a slag conveying belt at the feeding end through the guide hopper, and then is lifted to the discharging end of the vertical belt conveyor, so that continuous slag discharging is realized.
Description
Technical Field
The invention relates to the technical field of shaft slag tapping, in particular to a slag tapping device of a shaft heading machine. In addition, the invention also relates to a shaft boring machine comprising the slag tapping device.
Background
Along with the rapid development and utilization of underground space, the application of the vertical shaft is more and more extensive, the working condition of the vertical shaft heading machine is more and more complex and various, and the slag tapping is a main factor for limiting the development of the vertical shaft construction technology.
At present, shaft slag discharging mainly comprises a bucket lifting method, a downward slag discharging method, a slurry slag discharging method and the like, wherein the bucket lifting method is most common in slag discharging and simple in structure and easy to operate, but slag discharging is discontinuous and is not suitable for continuous matched slag discharging of a digging machine type; the existing slag discharging method for cutting a vertical shaft heading machine aiming at a pilot tunnel mainly adopts a downward slag discharging method, but the downward slag discharging method needs to excavate a slag conveying channel at the bottom of the pilot tunnel to convey slag discharged from the pilot tunnel, so that the use condition of the slag discharging method is very limited; the slurry slag tapping method requires a large taper on the working face to ensure the fluidity of the slag soil, is not suitable for rock stratum geology, and requires a large amount of water resources for large excavation face engineering, thereby bringing severe requirements for construction.
Therefore, the vertical shaft slag discharging device with high slag discharging efficiency and wide application range is provided, and the technical problem to be solved by the technical personnel in the field is solved.
Disclosure of Invention
The invention aims to provide a slag discharging device of a vertical shaft heading machine, which can realize continuous slag discharging of the vertical shaft heading machine in a limited arrangement space, and has stable and reliable slag discharging and high efficiency. Another object of the invention is to provide a shaft boring machine comprising the above slag tapping device.
In order to solve the technical problem, the invention provides a slag discharging device of a shaft heading machine, which comprises a vertical belt conveyor for conveying slag soil upwards, wherein the vertical belt conveyor comprises a slag conveying belt, a roller and a rack fixedly connected with a shield body of the heading machine, one end of the vertical belt conveyor is a material receiving end which vertically penetrates through the heading machine and is arranged in a pilot tunnel below a cutter head of the heading machine, the other end of the vertical belt conveyor is a material discharging end which is transversely arranged and is positioned above the cutter head, a sleeve is fixedly sleeved outside the material receiving end, the sleeve is partially arranged in the pilot tunnel, the outer wall of the sleeve is attached to the pilot tunnel, one side of the sleeve is provided with a feeding hole for the slag soil to enter, and the feeding hole is connected with a guide hopper for guiding the slag soil to the slag conveying belt.
Preferably, the feed inlet is opposite to the material receiving side of the slag conveying belt, the guide hopper is obliquely arranged, the upper end of the guide hopper is tightly butted with the feed inlet, and the lower end of the guide hopper is opposite to the material receiving side of the slag conveying belt.
Preferably, a groove hopper for storing muck is arranged on the slag conveying belt.
Preferably, the trough hopper is inclined to the rotation direction of the slag conveying belt.
Preferably, the feed inlet is further provided with a slag blocking device for blocking slag soil from entering the sleeve.
Preferably, still include and can carry the extension belt feeder to ground with the dregs, the one end of extending the belt feeder is located perpendicular belt feeder's discharge end below, the other end is located subaerial.
Preferably, be equipped with on the shield body and be convenient for fixed the mount of perpendicular belt feeder, the frame passes through the mount with the shield body coupling.
The invention also provides a shaft heading machine which comprises the slag discharging device.
The invention provides a slag discharging device of a shaft heading machine, which comprises a vertical belt conveyor used for conveying slag soil upwards, wherein the vertical belt conveyor comprises a slag conveying belt, a roller and a rack used for being fixedly connected with a shield body of the heading machine, one end of the vertical belt conveyor is a material receiving end which vertically penetrates through the heading machine and is arranged in a pilot tunnel below a cutter head of the heading machine, the other end of the vertical belt conveyor is a material discharging end which is transversely arranged and is positioned above the cutter head, a sleeve is fixedly sleeved outside the material receiving end, the sleeve is partially arranged in the pilot tunnel, the outer wall of the sleeve is attached to the pilot tunnel, one side of the sleeve is provided with a material inlet used for entering the slag soil, and the material inlet is connected with a material guide hopper used for guiding the slag soil to.
When a cutter head of the tunneling machine operates, generated slag firstly slides downwards to the central pilot tunnel along a tunnel face with a certain gradient, then enters the sleeve through the feeding hole and is guided onto a slag conveying belt at the feeding end through the guide hopper, and then is lifted to the discharging end of the vertical belt conveyor, so that continuous slag discharging is realized.
In conclusion, the slag discharging device of the vertical shaft heading machine provided by the invention has the advantages that the structure is simple and compact, the continuous slag discharging of the vertical shaft heading machine can be realized in a limited arrangement space, the slag discharging is stable and reliable, and the efficiency is high.
The shaft heading machine provided by the invention comprises the slag discharging device, and the shaft heading machine also has the same technical effect due to the technical effect of the slag discharging device, and the detailed description is omitted.
Drawings
FIG. 1 is a schematic structural view of one embodiment of a slag tapping device provided in the present invention;
FIG. 2 is another schematic structural view of one embodiment of the slag tapping device provided by the present invention;
3 fig. 3 3 3 is 3 an 3 enlarged 3 view 3 of 3 a 3- 3 a 3 in 3 fig. 3 2 3. 3
The drawings are numbered as follows:
the device comprises a cutter head 1, a pilot hole 2, a vertical belt conveyor 3, a slag conveying belt 4, a roller 5, a frame 6, a sleeve 7, a material guide hopper 8, a fixing frame 9 and an extension belt conveyor 10.
Detailed Description
The core of the invention is to provide the slag discharging device of the vertical shaft heading machine, which can realize continuous slag discharging of the vertical shaft heading machine in a limited arrangement space, and has stable and reliable slag discharging and high efficiency. Another core of the invention is to provide a shaft boring machine comprising the slag tapping device.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a slag tapping device according to an embodiment of the present invention; FIG. 2 is another schematic structural view of one embodiment of the slag tapping device provided by the present invention; 3 fig. 3 3 3 is 3 an 3 enlarged 3 view 3 of 3 a 3- 3 a 3 in 3 fig. 3 2 3. 3
The slag discharging device of the shaft boring machine provided by the specific embodiment of the invention mainly comprises a vertical belt conveyor 3 used for conveying slag soil upwards, the vertical belt conveyor 3 specifically comprises a frame 6, a slag conveying belt 4 and rollers 5, wherein the frame 6 of the vertical belt conveyor 3 is fixedly connected with a shield body of the boring machine so as to fix the vertical belt conveyor 3 and enable the vertical belt conveyor to move synchronously along with the boring of the boring machine, one end of the vertical belt conveyor 3 vertically penetrates through the boring machine and is arranged in a pilot tunnel 2 below a cutter head 1 of the boring machine and is used as a receiving end for receiving the slag soil, the other end of the vertical belt conveyor is transversely arranged and is positioned above the cutter head 1 of the boring machine and is used as a discharging end of the slag soil, a sleeve 7 is fixedly sleeved outside the receiving end of the vertical belt conveyor 3, part of the sleeve 7 is arranged in the pilot tunnel 2, the outer wall of the sleeve 7 is attached to the pilot tunnel 2, one side of the sleeve 7 is provided, the feed inlet is connected with a material guide hopper 8 used for guiding the slag soil to the slag conveying belt 4.
Wherein, in order to prevent the muck from directly falling into the pilot hole 2, the upper end of the sleeve 7 is higher than the pilot hole 2 and the outer wall of the sleeve 7 is tightly attached to the pilot hole 2; in order to enable the muck to enter the sleeve 7 through the feed opening, the feed opening cannot be lower than the opening of the pilot hole 2, and preferably the bottom end of the feed opening is flush with the opening of the pilot hole 2.
In addition, the frame 6 is used as a rigid framework of the vertical belt conveyor 3 and comprises a mounting frame for mounting the roller 5 and the sleeve 7 and a bogie for converting the slag conveying belt 4 from a transverse direction to a vertical direction, and in order to improve the operation stability of the slag conveying belt 4, the frame 6 can also comprise an anti-shaking frame arranged at the vertical section of the slag conveying belt 4 so as to prevent the slag conveying belt 4 from being scratched and prevent slag soil from overflowing to other areas of equipment and polluting the equipment.
When a cutter head 1 of the tunneling machine operates, generated slag firstly slides downwards to a central pilot tunnel 2 along a face with a certain gradient, then enters a sleeve 7 through a feeding hole and is guided into a slag conveying belt 4 at a feeding end through a material guide hopper 8, and then is lifted to a discharging end of a vertical belt conveyor 3, so that continuous slag discharging is realized.
The slag discharging device provided by the invention is mainly suitable for a vertical shaft with a pilot hole 2, namely when the vertical shaft is excavated, the pilot hole 2 is firstly drilled, then the whole shaft is excavated through a cutter head 1 of a heading machine, and when the heading machine tunnels downwards, a vertical belt conveyor 3 and a sleeve 7 synchronously move downwards along with the heading machine, so that continuous slag discharging is realized.
On the basis of the above specific embodiment, in order to make the slag fall onto the slag conveying belt 4 smoothly, the feeding port is preferably opposite to the material receiving side of the slag conveying belt 4, the material guiding hopper 8 is preferably arranged obliquely, and the upper end of the material guiding hopper 8 is in close butt joint with the feeding port, as shown in fig. 3, so as to prevent the slag from overflowing into the pilot hole 2, the lower end of the material guiding hopper 8 is opposite to the material receiving side of the slag conveying belt 4, and the size of the feeding port on the sleeve 7 is determined by the factors such as the width of the slag conveying belt 4, the diameter of the pilot hole 2, the running speed of the vertical belt conveyor 3.
Furthermore, in order to conveniently convey the slag soil, a groove hopper for storing the slag soil is arranged on the slag conveying belt 4; when the cutter head 1 of the development machine runs, the generated slag soil enters the groove hopper on the slag conveying belt 4 through the sleeve 7 and the material guide hopper 8.
Optionally, the groove hopper on the slag conveying belt 4 is obliquely arranged, and the opening of the groove hopper is inclined towards the rotating direction of the slag conveying belt 4, so that the groove hopper on the slag conveying belt 4, which is positioned at the receiving end and is close to one side of the feed inlet, is inclined upwards, and slag soil can be effectively prevented from spilling in the slag conveying process.
On the basis of the above embodiments, the slag tapping device provided by the present invention is preferably further provided with a slag stopping device at the feeding port of the sleeve 7, when the equipment is in operation, the slag stopping device is in a closed state, slag soil enters the slag conveying belt 4 in the sleeve 7 through the feeding port, and when the equipment is stopped or has a fault, the slag stopping device is turned on to prevent the slag soil from entering the sleeve 7 again.
Further, in order to ensure that the transported slag soil is not brought into the pilot tunnel 2, a slag removing device is arranged at the discharge end of the vertical belt conveyor 3, specifically, the slag removing device provided by the invention further comprises an extension belt conveyor 10 capable of conveying the slag soil to the ground, one end of the extension belt conveyor 10 is positioned below the discharge end of the vertical belt conveyor 3 and can synchronously move downwards along with the development machine, the other end of the extension belt conveyor 10 is positioned on the ground, and a belt of the extension belt conveyor 10 can extend along with the development of the development machine; during tunneling, the slag soil enters a trough hopper at the receiving end of the vertical belt conveyor 3 through the sleeve 7 and the guide hopper 8, is lifted by the vertical belt conveyor 3 and is conveyed to the discharging end, directly falls onto the extension belt conveyor 10, and is conveyed to the ground through the extension belt conveyor 10.
Of course, the method for conveying the muck from the discharge end of the vertical belt conveyor 3 to the ground is not limited to this, and it is also within the protection scope of the present invention that a material storage tank is provided at the discharge end of the vertical belt conveyor 3 and the muck is conveyed to the ground by a bucket lifting method.
On the basis of the above embodiments, in order to facilitate the installation of the vertical belt conveyor 3, a fixing frame 9 may be disposed on the shield body of the heading machine, so that the frame 6 of the vertical belt conveyor 3 is connected with the shield body through the fixing frame 9, specifically, the fixing frame 9 may include a cross beam and pillars located at two sides of the cross beam, and the vertical portion of the frame 6 is fixedly connected with the middle portion of the cross beam.
In conclusion, the slag discharging device of the vertical shaft heading machine provided by the invention has the advantages that the structure is simple and compact, the continuous slag discharging of the vertical shaft heading machine can be realized in a limited arrangement space, the slag discharging is stable and reliable, and the efficiency is high.
In addition to the above slag tapping device, the specific embodiment of the present invention further provides a shaft heading machine including the above slag tapping device, and the structure of other parts of the shaft heading machine refers to the prior art, which is not described herein again.
In the description of the present application, it is to be understood that the terms "upper", "lower", "lateral", "vertical", and the like, indicate orientations or relationships based on the orientations or positional relationships shown in the drawings, are used for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In addition, in the specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant part can be referred to the method part for description.
The shaft boring machine and the slag discharging device thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A slag discharging device of a shaft development machine, which is characterized by comprising a vertical belt conveyor (3) used for conveying slag upwards, the vertical belt conveyor (3) comprises a slag conveying belt (4), rollers (5) and a frame (6) fixedly connected with a shield body of the heading machine, one end of the vertical belt conveyor (3) is a material receiving end which vertically penetrates through the heading machine and is arranged in a pilot tunnel (2) below a heading machine cutter head (1), the other end of the vertical belt conveyor is a discharge end which is transversely arranged and is positioned above the cutter head (1), a sleeve (7) is fixedly sleeved outside the material receiving end, part of the sleeve (7) is arranged in the pilot hole (2) and the outer wall of the sleeve (7) is attached to the pilot hole (2), a feed inlet for the slag to enter is formed in one side of the sleeve (7), and a guide hopper (8) for guiding the slag to the slag conveying belt (4) is connected to the feed inlet.
2. The slag tapping device according to claim 1, wherein the feeding hole is opposite to the receiving side of the slag conveying belt (4), the material guiding hopper (8) is obliquely arranged, the upper end of the material guiding hopper (8) is tightly butted with the feeding hole, and the lower end of the material guiding hopper is opposite to the receiving side of the slag conveying belt (4).
3. Slag tapping device according to claim 2, wherein the slag belt (4) is provided with a hopper for storing slag.
4. Tapping device according to claim 3, wherein the chute is inclined in the direction of rotation of the slag conveyor belt (4).
5. Slag tapping device according to any one of the claims 1 to 4, wherein the feed inlet is further provided with slag retaining means for retaining slag from entering the sleeve (7).
6. Slag tapping device according to claim 1, further comprising an extension belt conveyor (10) capable of conveying the slag to the ground, one end of the extension belt conveyor (10) being located below the discharge end of the vertical belt conveyor (3) and the other end being located on the ground.
7. Slag tapping device according to claim 1, wherein the shield body is provided with a fixing frame (9) for fixing the vertical belt conveyor (3), and the frame (6) is connected with the shield body through the fixing frame (9).
8. A shaft boring machine comprising a slag tapping device as claimed in any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010202.XA CN111173516A (en) | 2020-01-06 | 2020-01-06 | Shaft heading machine and slag discharging device thereof |
| CN202011009023.0A CN111894597B (en) | 2020-01-06 | 2020-09-23 | Shaft heading machine and slag discharging device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010202.XA CN111173516A (en) | 2020-01-06 | 2020-01-06 | Shaft heading machine and slag discharging device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111173516A true CN111173516A (en) | 2020-05-19 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010010202.XA Pending CN111173516A (en) | 2020-01-06 | 2020-01-06 | Shaft heading machine and slag discharging device thereof |
| CN202011009023.0A Active CN111894597B (en) | 2020-01-06 | 2020-09-23 | Shaft heading machine and slag discharging device thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011009023.0A Active CN111894597B (en) | 2020-01-06 | 2020-09-23 | Shaft heading machine and slag discharging device thereof |
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| CN (2) | CN111173516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855166A (en) * | 2021-01-04 | 2021-05-28 | 中煤科工集团重庆研究院有限公司 | Pressure drilling type construction method of gas-containing coal seam well bore under mountain land topographic condition |
| CN113738373A (en) * | 2021-08-30 | 2021-12-03 | 中铁工程装备集团有限公司 | Vertical shaft excavating equipment with double-mode deslagging function and vertical shaft excavating method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070008199A (en) * | 2005-07-13 | 2007-01-17 | 김경숙 | Shaft enlargement machine |
| CN201102786Y (en) * | 2007-06-25 | 2008-08-20 | 王文平 | Novel silo adhesive tape hoister |
| CN104265315A (en) * | 2014-09-30 | 2015-01-07 | 中铁工程装备集团有限公司 | Novel hard rock tunnel tunneling machine capable of expanding excavation |
| CN204568741U (en) * | 2015-03-12 | 2015-08-19 | 中煤第三建设（集团）有限责任公司 | Promote skip bucket coal-blending device |
| CN107161599A (en) * | 2017-05-10 | 2017-09-15 | 中铁隧道集团有限公司 | A kind of construction method of the native vertical lifting of deep shaft tunnel quarrel |
| CN110644999B (en) * | 2019-11-25 | 2020-03-20 | 中国铁建重工集团股份有限公司 | Large-section vertical shaft heading machine and construction method thereof |
-
2020
- 2020-01-06 CN CN202010010202.XA patent/CN111173516A/en active Pending
- 2020-09-23 CN CN202011009023.0A patent/CN111894597B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855166A (en) * | 2021-01-04 | 2021-05-28 | 中煤科工集团重庆研究院有限公司 | Pressure drilling type construction method of gas-containing coal seam well bore under mountain land topographic condition |
| CN112855166B (en) * | 2021-01-04 | 2023-01-06 | 中煤科工集团重庆研究院有限公司 | Pressure drilling type construction method of gas-containing coal seam well bore under mountain land topographic condition |
| CN113738373A (en) * | 2021-08-30 | 2021-12-03 | 中铁工程装备集团有限公司 | Vertical shaft excavating equipment with double-mode deslagging function and vertical shaft excavating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111894597B (en) | 2022-06-07 |
| CN111894597A (en) | 2020-11-06 |
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Application publication date: 20200519 |