CN111828030A - Reserve type deslagging method applied to small-diameter TBM - Google Patents
Reserve type deslagging method applied to small-diameter TBM Download PDFInfo
- Publication number
- CN111828030A CN111828030A CN202010580538.XA CN202010580538A CN111828030A CN 111828030 A CN111828030 A CN 111828030A CN 202010580538 A CN202010580538 A CN 202010580538A CN 111828030 A CN111828030 A CN 111828030A
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- slag
- tbm
- shuttle
- mine car
- car
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000002893 slag Substances 0.000 claims abstract description 114
- 238000010079 rubber tapping Methods 0.000 claims abstract description 28
- 230000003137 locomotive effect Effects 0.000 claims description 11
- 230000005641 tunneling Effects 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 description 6
- 238000007790 scraping Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/126—Loading devices or installations
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological 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 relates to the technical field of TBM construction, in particular to a reserve type slag tapping method applied to a small-diameter TBM. The slag discharging structure is reasonable in design, TBM slag discharging can be achieved without occupying process time, and construction efficiency can be greatly improved.
Description
Technical Field
The invention relates to the technical field of TBM construction, in particular to a reserve type deslagging method applied to a small-diameter TBM.
Background
Slag tapping is a key process in the TBM tunneling construction process, and the conventional TBM in-tunnel slag tapping adopts a mode of a continuous belt conveyor or a locomotive traction mine car. The continuous belt conveyor is greatly influenced by a TBM tunneling route and the diameter of a tunnel, and is generally rarely applied to small-bore projects. The mine car has strong deslagging flexibility and few limited factors, and more mine cars are adopted in small-diameter TBM deslagging.
However, the existing mine car has many defects in slag discharge, when the diameter of a tunnel is small and the total length of TBM equipment is short, the equipment layout is compact, the transportation space is limited, a wrong car platform cannot be arranged in the tunnel, the tail part of the TBM can only allow one section of mine car to receive slag, the time for slag discharge of the mine car in a reciprocating mode is long, the construction efficiency is low, and the progress of engineering is severely restricted.
Disclosure of Invention
The invention aims to solve the problems and the defects, provides a reserve type deslagging method applied to a small-diameter TBM, has reasonable deslagging structure design, can realize TBM deslagging without occupying working procedure time, and can greatly improve the construction efficiency.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a reserve type slag tapping method applied to a small-diameter TBM is characterized in that a TBM equipment belt conveyor is installed on a TBM trolley structure frame, a two-stage shuttle-type mine car slag receiving mode is adopted at the lower portion of the TBM equipment belt conveyor, the two-stage shuttle-type mine car is divided into a first-stage fixed shuttle-type mine car and a second-stage movable shuttle-type mine car, the front end of the fixed shuttle-type mine car is connected with a TBM tail-end trolley, the fixed shuttle-type mine car and the TBM trolley move synchronously under the traction of the TBM trolley, the movable shuttle-type mine car moves back and forth between the fixed shuttle-type mine car and an out-of-hole slag pit, when the movable shuttle-type mine car enters the hole to receive slag, slag stones falling from the TBM equipment belt conveyor are transferred to the movable shuttle-type mine car through the fixed shuttle-type mine car, and when the movable shuttle-type mine.
Further, in the above-mentioned storage type slag tapping method applied to the small-diameter TBM, the fixed shuttle car and the movable shuttle car are provided with a slag soil transfer device.
Further, in the above-mentioned reserve slag tapping method applied to the small-diameter TBM, the fixed shuttle-type mine car is low in front and high in back, a slag scraper is installed inside the fixed shuttle-type mine car, the slag scraper is used for conveying slag stones from front to back, and the slag scraper is a scraper conveyor.
Further, in the above-mentioned reserve-type slag tapping method applied to the small-diameter TBM, a slag scraper is installed inside the movable shuttle-type mine car, and the slag scraper is used for conveying slag stones from front to back, and the slag scraper adopts a scraper conveyor.
Further, in the above-mentioned reserve slag tapping method applied to the small-diameter TBM, a turnout is arranged at the hole of the TBM and used for dispatching a movable shuttle car for entering and exiting the hole.
Further, in the above-mentioned reserve type deslagging method applied to the small-diameter TBM, a slag belt conveyor is arranged at the slag pit outside the tunnel, and the slag belt conveyor is positioned beside the track of the movable shuttle-type mine car.
Further, in the above-mentioned reserve-type deslagging method applied to the small-diameter TBM, an earthwork vehicle is arranged at the lower part of the discharge hopper of the slag belt conveyor, and the earthwork vehicle is used for transporting the transported slag stones out of the tunnel.
Further, in the above-mentioned reserve slag tapping method applied to the small-diameter TBM, the slag belt conveyor has a Z-shaped structure with a low front part and a high rear part.
Further, in the above-mentioned storage type slag tapping method applied to the small-diameter TBM, the mobile shuttle car is drawn by the battery locomotive to and from between the fixed shuttle car and the pit outer slag pit.
Further, in the above-mentioned storage type slag tapping method applied to the small-diameter TBM, when the TBM is in a non-tunneling state, the fixed shuttle car can be pulled by the battery locomotive to move backwards or be pulled out of the tunnel.
The reserve type deslagging method applied to the small-diameter TBM has the beneficial effects that:
1. according to the invention, the shuttle-type mine car is introduced into TBM construction, the adaptability of the TBM is enhanced, the slag tapping mode of the TBM is enriched, the two-stage shuttle-type mine car slag receiving mode is adopted at the lower part of the TBM equipment belt conveyor, the fixed shuttle-type mine car is used for temporarily storing slag stones, the TBM equipment halt caused by slag tapping of the mine car is avoided, the construction efficiency is greatly improved, the movable shuttle-type mine car trips between the fixed shuttle-type mine car and the slag pit outside the pit to tap slag, the problems that a wrong car platform cannot be arranged in a small-diameter TBM pit and only one section of mine car can be allowed to receive slag at the tail part of the TBM are solved, the structural design is reasonable, the TBM slag tapping can be realized, the process time;
2. the fixed shuttle mine car and the movable shuttle mine car are provided with muck transfer devices, do not need to contact other equipment for auxiliary slag unloading, and are convenient and efficient;
3. the shuttle-type mine car has strong flexibility, can drive away from the lower part of the receiving hopper of the TBM equipment belt conveyor in a non-working state, vacates a material transportation road and is convenient for material transportation and ex-hole maintenance;
4. and turnouts are arranged at the holes of the TBM and used for scheduling the movable shuttle-type mine cars entering and exiting the holes, so that the vehicle passing by another vehicle is facilitated.
Drawings
Fig. 1 is a schematic diagram of the overall arrangement of a deslagging device applied to a reserve deslagging method of a small-diameter TBM according to an embodiment of the invention.
FIG. 2 is a schematic view of the construction of a shuttle car according to an embodiment of the invention.
Figure 3 is a plan view of switch locations in accordance with an embodiment of the present invention.
FIG. 4 is a schematic sectional view A-A of FIG. 1.
FIG. 5 is a flow chart of a slag tapping mode of a stationary shuttle car according to an embodiment of the invention.
FIG. 6 is a flow chart of a storage mode of a stationary shuttle car according to an embodiment of the invention.
FIG. 7 is a flow chart of a service mode of a stationary shuttle car according to an embodiment of the invention.
In the figure: the system comprises a TBM equipment belt conveyor 1, a fixed shuttle mine car 2, a slag scraping machine 21, a movable shuttle mine car 3, a battery locomotive 4, turnouts 5, a slag turning belt conveyor 6 and an earth moving vehicle 7.
Detailed Description
The reserve slag tapping method applied to the small-diameter TBM is described in more detail by the specific embodiment in the following with reference to the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-7, the embodiment discloses a storage type slag tapping method applied to a small-diameter TBM, wherein a TBM equipment belt conveyor is installed on a TBM trolley structure frame, a two-stage shuttle-type mine car slag receiving mode is adopted at the lower part of the TBM equipment belt conveyor, the two-stage shuttle-type mine car is divided into a first-stage fixed shuttle-type mine car and a second-stage movable shuttle-type mine car, the front end of the fixed shuttle-type mine car is connected with a TBM tail-section trolley, the fixed shuttle-type mine car and the TBM trolley move synchronously under the traction of the TBM trolley, the movable shuttle-type mine car moves back and forth between the fixed shuttle-type mine car and an out-hole slag pit, when the movable shuttle-type mine car enters a hole to receive slag, slag stones falling from the TBM equipment are transferred to the movable shuttle-type mine car through the fixed-type mine car, and when the movable shuttle-type mine car exits the hole to convey. According to the invention, the shuttle-type mine car is introduced into TBM construction, the adaptability of the TBM is enhanced, the slag tapping mode of the TBM is enriched, the two-stage shuttle-type mine car slag receiving mode is adopted at the lower part of the TBM equipment belt conveyor, the fixed shuttle-type mine car is used for temporarily storing slag stones, the TBM equipment halt caused by slag tapping of the mine car is avoided, the construction efficiency is greatly improved, the movable shuttle-type mine car trips between the fixed shuttle-type mine car and the slag pit outside the pit to tap slag, the problems that a wrong car platform cannot be arranged in a small-diameter TBM pit, and only one section of mine car can be allowed to receive slag at the tail part of the TBM are solved, the structural design is reasonable, the TBM can tap slag without occupying the process time.
In this embodiment, fixed shuttle mine car and portable shuttle mine car are all from taking dregs transfer device, need not to contact the supplementary sediment of unloading of other equipment, and is convenient high-efficient. Specifically, fixed shuttle mine car height in the front low back is convenient for connect the material and be convenient for toward the interior blanking of portable shuttle mine car from TBM equipment belt feeder, and internally mounted has the sediment machine of scraping, scrapes the sediment machine and is used for carrying the slabstone from the front to the back, and the slabstone is stored to the fixed shuttle mine car of being convenient for, scrapes the sediment machine and adopts scraper conveyor. The movable shuttle-type mine car is internally provided with a slag scraping machine which is used for conveying slag stones from front to back, the movable shuttle-type mine car is convenient to fill, and the slag scraping machine adopts a scraper conveyor.
In this embodiment, preferably, a turnout is provided at the TBM opening for dispatching the mobile shuttle car entering and exiting the tunnel, so as to facilitate the passing of cars and the cooperation of a plurality of mobile shuttle cars.
In this embodiment, preferably, a slag transferring belt conveyor is arranged at the slag pit outside the tunnel, the slag transferring belt conveyor is located beside the track of the movable shuttle-type mine car, so that the slag stones can be conveniently and rapidly transferred away, and an earthwork vehicle is arranged at the lower part of a discharge hopper of the slag transferring belt conveyor and used for transferring the transferred slag stones out of the tunnel.
In this embodiment, preferably, the slag belt conveyor is a Z-shaped structure with a low front and a high rear, so that material can be conveniently received at one end and can be conveniently discharged at the other end.
In this embodiment, specifically, the mobile shuttle car is drawn by the battery locomotive to and fro between the fixed shuttle car and the pit outside the pit for transporting the slag stones.
In this embodiment, the stationary shuttle car may be towed by the storage battery locomotive to move backwards or out of the tunnel, particularly when the TBM is in a non-tunneling state.
When deslagging, the slag tapping method is divided into the following three working modes according to the state of a fixed shuttle mine car:
a slag tapping mode: after the equipment is in place, starting a fixed shuttle mine car slag scraper, then starting a TBM equipment belt conveyor, and conveying rock slag generated by TBM tunneling to the fixed shuttle mine car through the TBM equipment belt conveyor; the fixed shuttle mine car slag scraper rotates to transport the rock slag to the movable shuttle mine car; after the rock slag at the receiving end of the movable shuttle-type mine car reaches the height line of the storage bin, the movable shuttle-type mine car slag scraper is inching, slag is migrated, the actions are circulated, and the fixed shuttle-type mine car slag scraper brakes and stops discharging to the movable shuttle-type mine car after the movable shuttle-type mine car storage bin is full; the battery locomotive pulls the movable shuttle-type mine car to run out of the tunnel for slag unloading, and the next movable shuttle-type mine car enters the tunnel for slag receiving.
Storage mode: after the equipment is in place, starting a TBM equipment belt conveyor, and conveying rock slag generated by TBM tunneling to a fixed shuttle car through the TBM equipment belt conveyor; after the rock slag at the receiving end of the fixed shuttle type mine car reaches the height line of the storage bin, the internal slag scraping machine is clicked, the rock slag is moved forwards, the slag receiving position is changed, and the movable shuttle type mine car returns to the slag receiving position or stops the storage working mode and stops the TBM equipment after the fixed shuttle type mine car is full of the storage bin.
The maintenance mode is as follows: when the TBM equipment is in a non-tunneling state, the fixed shuttle-type mine car can be pulled by the storage battery locomotive to move backwards, the tail space is opened, and personnel can conveniently enter and exit the TBM equipment or be pulled out of a tunnel by the storage battery locomotive to maintain the fixed shuttle-type mine car outside the tunnel.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above, and various combinations of the technical features and structures proposed by the present invention may be made without departing from the concept of the present invention.
Claims (10)
1. A storage type slag tapping method applied to a small-diameter TBM is characterized in that a TBM equipment belt conveyor is installed on a TBM trolley structure frame, a two-stage shuttle-type mine car slag receiving mode is adopted at the lower portion of the TBM equipment belt conveyor, the two-stage shuttle-type mine car is divided into a one-stage fixed shuttle-type mine car and a two-stage movable shuttle-type mine car, the front end of the fixed shuttle-type mine car is connected with a TBM tail-end trolley, the fixed shuttle-type mine car and the TBM trolley move synchronously under the traction of the TBM trolley, the movable shuttle-type mine car moves between the fixed shuttle-type mine car and an outer slag pit of a hole, when the movable shuttle-type mine car enters the hole to receive slag, slag stones falling from the TBM equipment belt conveyor are transferred to the movable shuttle-type mine car through the fixed shuttle-type mine car, and when the movable shuttle-type mine car is discharged from the hole to convey.
2. The reserved deslagging method applied to the small-diameter TBM according to claim 1, wherein the fixed shuttle car and the movable shuttle car are provided with muck transfer devices.
3. The reserved slag tapping method applied to the small-diameter TBM, according to claim 2, wherein the fixed shuttle-type mine is low in front and high in back, a slag scraper is installed inside the fixed shuttle-type mine and used for conveying slag stones from front to back, and the slag scraper adopts a scraper conveyor.
4. The reserved slag tapping method applied to the small-diameter TBM, according to claim 2, wherein a slag scraper is installed inside the movable shuttle car and used for conveying slag stones from front to back, and the slag scraper adopts a scraper conveyor.
5. The reserved slag tapping method applied to the small-diameter TBM, as claimed in claim 1, wherein switches are arranged at the hole of the TBM and used for dispatching a movable shuttle car for entering and exiting the hole.
6. The reserved slag tapping method applied to the small-diameter TBM, as claimed in claim 1, wherein a slag belt conveyor is arranged at the slag pit outside the pit, and the slag belt conveyor is positioned beside the track of the movable shuttle car.
7. The reserve slag tapping method applied to the small-diameter TBM, as claimed in claim 6, wherein an earthwork vehicle is arranged at the lower part of the discharge hopper of the slag belt conveyor, and the earthwork vehicle is used for transporting the transported slag stones out of the tunnel.
8. The reserved deslagging method applied to the small-diameter TBM according to claim 6, wherein the deslagging belt conveyor is in a Z-shaped structure with a low front part and a high rear part.
9. The reserved slag tapping method applied to the small-diameter TBM, as claimed in claim 1, wherein the movable shuttle car is drawn by the battery locomotive to and from between the fixed shuttle car and an out-of-pit slag pit.
10. The stored deslagging method applied to the small-diameter TBM in claim 1, wherein the fixed shuttle car can be pulled by the battery locomotive to move backwards or out of the tunnel when the TBM is in a non-tunneling state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580538.XA CN111828030A (en) | 2020-06-23 | 2020-06-23 | Reserve type deslagging method applied to small-diameter TBM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580538.XA CN111828030A (en) | 2020-06-23 | 2020-06-23 | Reserve type deslagging method applied to small-diameter TBM |
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| Publication Number | Publication Date |
|---|---|
| CN111828030A true CN111828030A (en) | 2020-10-27 |
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| CN202010580538.XA Pending CN111828030A (en) | 2020-06-23 | 2020-06-23 | Reserve type deslagging method applied to small-diameter TBM |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199285A (en) * | 2022-09-13 | 2022-10-18 | 北方重工集团有限公司 | Small-turning main beam hinged open type TBM for hard rock tunnel construction |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715280A (en) * | 2016-04-11 | 2016-06-29 | 中船重工（青岛）轨道交通装备有限公司 | Mucking and transporting method and device applied to double-shield tunnel boring machine |
| CN210365676U (en) * | 2019-08-21 | 2020-04-21 | 江西鑫通机械制造有限公司 | Rail tunnel slag discharging device |
-
2020
- 2020-06-23 CN CN202010580538.XA patent/CN111828030A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715280A (en) * | 2016-04-11 | 2016-06-29 | 中船重工（青岛）轨道交通装备有限公司 | Mucking and transporting method and device applied to double-shield tunnel boring machine |
| CN210365676U (en) * | 2019-08-21 | 2020-04-21 | 江西鑫通机械制造有限公司 | Rail tunnel slag discharging device |
Non-Patent Citations (3)
| Title |
|---|
| 张玉涛等: "深井大断面全岩巷道运矸一体化技术研究", 《山东煤炭科技》 * |
| 朱奇俊: "TBM出碴方式的研究性分析", 《现代制造技术与装备》 * |
| 赵成雷等: "轨轮式梭车的设计研究", 《煤矿机械》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199285A (en) * | 2022-09-13 | 2022-10-18 | 北方重工集团有限公司 | Small-turning main beam hinged open type TBM for hard rock tunnel construction |
| CN115199285B (en) * | 2022-09-13 | 2022-12-02 | 北方重工集团有限公司 | Small-turning main beam hinged open type TBM for hard rock tunnel construction |
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Application publication date: 20201027 |