CN113236279A - Tunnel boring machine with synchronous backfilling function - Google Patents
Tunnel boring machine with synchronous backfilling function Download PDFInfo
- Publication number
- CN113236279A CN113236279A CN202110699444.9A CN202110699444A CN113236279A CN 113236279 A CN113236279 A CN 113236279A CN 202110699444 A CN202110699444 A CN 202110699444A CN 113236279 A CN113236279 A CN 113236279A
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- Prior art keywords
- slag
- stirring
- backfill
- synchronous
- backfilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines 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 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/124—Helical conveying means therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Disintegrating Or Milling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a tunnel boring machine with a synchronous backfill function, which comprises: the front end of the main machine is provided with a cutter head; the rear matching is arranged at the rear side of the main machine and comprises a rear matching slag discharging device; the material distributing device is arranged on the rear matched slag discharging device and is used for distributing and guiding out partial muck or stone slag; the stirring device is arranged at the downstream of the material distributing device and is used for stirring the muck or the stone slag with other raw materials into a backfill material; the feeding device is arranged at the downstream of the stirring device and used for conveying the backfill material to the backfill area; and the compaction device is used for compacting the backfill material to the required strength. The invention can realize the synchronous tunnel excavation and backfill operation and can shorten the tunnel cavern forming time. And moreover, the muck or the stone slag generated by tunneling is used as a backfill raw material, so that the configuration cost of the backfill material can be reduced. Meanwhile, the material distributing device, the crusher, the stirring device and the feeding device belong to equipment of a tunnel boring machine, so that the configuration of equipment such as an extra-tunnel stirring station, a transport vehicle and the like is reduced, and the backfill cost can be greatly reduced.
Description
Technical Field
The invention relates to the technical field of tunnel boring machines, in particular to a tunnel boring machine with a synchronous backfilling function.
Background
In the current tunnel construction, the full-face tunnel boring machine is widely used due to high efficiency and safety. The excavation section of the existing full-section tunnel boring machine is circular, but most tunnels can be used only after the boring machine is communicated and backfilling or further lining is needed. If the mining tunnel is communicated, other equipment is needed to carry out backfill compaction treatment on the excavated cavern, and then the vehicle can be used. The construction scheme of digging before backfilling leads to long cavern forming time, and backfilling needs to be equipped with backfilling materials, a stirring station, a material transport vehicle and other equipment, so that the occupied area is large, and the cost is high.
Disclosure of Invention
The invention aims to provide a tunnel boring machine with a synchronous backfilling function, which can shorten the forming time of a tunnel cavern and reduce the backfilling cost.
In order to achieve the purpose, the tunnel boring machine with the synchronous backfilling function adopts the following technical scheme:
a tunnel boring machine with a synchronous backfilling function comprises:
the main machine is provided with a cutter head at the front end and comprises a main machine slag discharging device, and the main machine slag discharging device is used for conveying slag soil or stone slag excavated by the cutter head backwards;
the rear matching is arranged at the rear side of the main machine and comprises a rear matching slag discharging device, and the rear matching slag discharging device is used for conveying slag or stone slag backwards to a slag car;
the material distributing device is arranged on the rear matched slag discharging device and is used for shunting and guiding out partial muck or stone slag on the rear matched slag discharging device;
the stirring device is arranged at the downstream of the material distributing device and is used for stirring the muck or the stone slag with other raw materials into a backfill material;
the feeding device is arranged at the downstream of the stirring device and is used for conveying the backfill material to the backfill area;
and the compacting device is used for compacting the backfill materials in the backfill region to the required strength.
The beneficial effects of the above technical scheme are that: the rear matching slag discharging device is provided with the material distributing device which can distribute and guide out partial slag or stone slag on the rear matching slag discharging device, the lower stream of the material distributing device is provided with the stirring device which can stir the slag or the stone slag with other raw materials into backfill materials, the backfill materials are conveyed to a backfill region by the material conveying device at the lower stream of the stirring device, finally, the backfill materials in the backfill region can be compacted to the required strength by utilizing the compacting device, the function of synchronously carrying out tunnel excavation and backfill operations of the tunnel boring machine is realized, and the tunnel cavern forming time can be shortened.
In addition, because the muck or the stone slag generated by tunneling is used as a backfill raw material, the configuration cost of the backfill material can be reduced. Meanwhile, the stirring device and the feeding device belong to equipment of a tunnel boring machine, so that the configuration of equipment such as an off-tunnel stirring station and a transport vehicle is reduced, and the backfill cost can be reduced.
Furthermore, in order to facilitate the stirring of the stirring device and ensure that qualified backfill raw materials are prepared, a crusher is arranged between the material distribution device and the stirring device and is used for crushing massive muck or stone slag.
Further, for convenience of use, the crusher is a jaw crusher.
Further, in order to arrange and use conveniently, the make full use of space, the supporting slag discharging device of back is arranged by preceding transition upwards gradually after, and agitating unit is located feed divider's below.
Further, in order to arrange and use conveniently, the make full use of space, the supporting slag discharging device in back is by preceding upwards transition arrangement gradually in the back, and breaker and agitating unit all are located feed divider's below.
Further, for convenience of use, the material distribution device is a plough type discharger.
Further, for convenient use, agitating unit is the agitator tank, and the agitator tank includes jar body and is used for driving jar driving motor of body just reversing to realize mixing the material and pay-off.
Further, for convenient use, the feeding device is a belt conveyor.
Further, for convenience of use, the compaction device is a hand-held vibratory roller.
Furthermore, in order to facilitate the movement of the stirring device and the feeding device, the rear support comprises a rear support trolley, and the stirring device and the feeding device are both mounted on the rear support trolley.
Drawings
FIG. 1 is a schematic view of a tunnel boring machine with a synchronous backfilling function according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a cross-sectional view of a tunnel backfilled by the tunnel boring machine with the synchronous backfilling function.
In the figure: 1. a host; 11. a cutter head; 12. an equipment beam; 13. a host deslagging device; 2. then matching; 21. a slag discharging device is matched at the rear part; 22. a rear matching trolley; 3. a material distributing device; 4. a crusher; 5. a stirring device; 6. a feeding device; 7. a compaction device; 8. backfilling the area; 9. and (5) carrying out slag car.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
An embodiment of a tunnel boring machine (hereinafter referred to as a tunnel boring machine) with a synchronous backfill function in the invention is shown in fig. 1, the tunnel boring machine in the embodiment is a hard rock Tunnel Boring Machine (TBM), the tunnel boring machine comprises a main machine 1 and a rear support 2, a cutter head 11 is arranged at the front end of the main machine 1, and the cutter head 11 is driven by the main machine 1 to carry out tunneling and rock breaking. The main machine 1 comprises an equipment beam 12 and a main machine slag discharging device 13 arranged on the equipment beam 12, and the main machine slag discharging device 13 is used for conveying the stone slag excavated by the cutter head 11 backwards to the rear matching body 2. Combine shown in fig. 1 and fig. 2, the supporting 2 setting in the rear side of host computer 1 in back, including the supporting slag discharging device 21 in back, the supporting slag discharging device 21 in back and host computer slag discharging device 13 are the belt feeder, and the supporting slag discharging device 21 in back is by preceding upwards transition arrangement gradually backward for carry the stone ballast to dregs car 9 backward.
The tunnel boring machine further comprises a backfilling device, as shown in fig. 1 and fig. 2, the backfilling device comprises a material distributing device 3 mounted on the rear matched slag discharging device 21, and the material distributing device 3 is used for distributing and guiding out part of the stone slag on the rear matched slag discharging device 21. Specifically, the material distributing device 3 in this embodiment is a plow discharger, the plow discharger is composed of a push rod, a rocker arm, a plowshare and a frame body, the plowshare is driven by the push rod to be put down when materials are needed, stone slag can be led out from the belt conveyor, when the led stone slag amount meets the proportioning requirement, the plowshare is driven by the push rod to rise, and the stone slag on the later matched slag discharging device 21 can be continuously conveyed backwards.
The backfilling equipment further comprises a crusher 4 and a stirring device 5 which are arranged below the material distributing device 3, wherein the crusher 4 in the embodiment is a jaw crusher, is arranged between the material distributing device 3 and the stirring device 5, and is used for receiving the stone slag led out by the material distributing device 3 and crushing large stone slag to obtain the required particle size. The stone slag crushed by the crusher 4 directly falls into the stirring device 5, and other corresponding raw materials are added into the stirring device 5 according to the proportion, so that the mixed material is stirred in the stirring device 5 to prepare the backfill material. Specifically, the stirring device 5 in this embodiment is a stirring tank, and the stirring tank includes a tank body and a driving motor for driving the tank body to rotate forward and backward, so as to realize the functions of stirring and feeding.
The backfill equipment further comprises a feeding device 6 arranged at the downstream of the stirring device 5, backfill materials discharged by the stirring device 5 firstly reach the feeding device 6 and then are conveyed to a backfill area 8 at the rear part through the feeding device 6, and a belt conveyor can be used as the feeding device according to the viscosity of the backfill materials.
The backfilling device also comprises a compacting device 7, the backfilling material is waited for solidification for about 24 hours after backfilling, and then the backfilling material is compacted to the required strength by the compacting device 7 so as to meet the traffic requirement. As shown in fig. 3, the height of the backfill region 8 is h. For ease of operation and flexibility of use, the compaction apparatus 7 in this embodiment is a hand-held vibratory roller.
In addition, as shown in fig. 2, the rear support 2 includes a rear support trolley 22, and the crusher 4, the stirring device 5 and the feeding device 6 are all mounted on the rear support trolley 22, so that the rear support trolley 22 can move synchronously, and the movement is facilitated.
The working principle of the tunnel boring machine is as follows:
during the use, cutterhead 11 breaks the rock under the drive of host computer 1, and the rock is carried to supporting 2 after through host computer slag discharging device 13 and is carried to the equipment afterbody from supporting slag discharging device 21 in back again, and feed divider 3 opens the back and can derive the stone ballast reposition of redundant personnel on the supporting slag discharging device 21 in the breaker 4 after, and after the stone ballast volume satisfied the needs of laying the end, feed divider 3 can let the stone ballast continue to carry to dregs car 9 along supporting slag discharging device 21 in back, is sent outside the hole by dregs car 9. The stone slag is crushed and falls into a stirring device 5, other raw materials are added according to the required proportion for stirring, the mixture is fully stirred and then sent into a feeding device 6, the prepared backfill material is sent into a backfill area 8, finally, the backfill material is compacted to reach the required strength by a compacting device 7, and the length of the backfill area can meet the one-day tunneling mileage, so that the functions of tunneling and backfilling are realized.
Therefore, the invention adds a set of synchronous backfilling equipment on the basis of the tunnel boring machine, realizes the synchronous operation of tunnel excavation and backfilling, can shorten the forming time of the tunnel cavern and achieves one-step forming. And moreover, the stone slag generated by tunneling is used as a backfill raw material, so that the preparation cost of the backfill material can be reduced. Meanwhile, the material distributing device 3, the crusher 4, the stirring device 5 and the feeding device 6 belong to equipment of a tunnel boring machine and are arranged on the tunnel boring machine, so that the arrangement of equipment such as an off-tunnel stirring station, a transport vehicle and the like is reduced, and the backfill cost can be greatly reduced.
In other embodiments of the tunnel boring machine with the synchronous backfilling function, the tunnel boring machine may also be a shield machine for excavating soil tunnels, and at this time, muck is excavated by the cutter head.
In other embodiments of the tunnel boring machine with a synchronous backfilling function, the stirring device and the feeding device can also move by themselves.
In other embodiments of the tunnel boring machine with simultaneous backfilling, the compacting device may also be a roller with a cab.
In other embodiments of the tunnel boring machine with a synchronous backfilling function, the feeding device may also be a screw conveyor.
In other embodiments of the tunnel boring machine with the synchronous backfilling function, the stirring device may also be a common stirring cylinder, a stirring rod is arranged in the stirring cylinder, the stirring rod rotates in one direction to mix materials, and a discharge hole is arranged at the bottom of the stirring cylinder to feed materials.
In other embodiments of the tunnel boring machine that possesses the function of backfilling in step, feed divider can not plow discharger, but install the branch flitch of the supporting slag discharging device lateral part in back, the one end of branch flitch articulates the supporting slag discharging device lateral part in back, the other end is provided with drive arrangement and rotates with the drive branch flitch, the slag discharging device lateral part is provided with the branch material mouth, normal condition branch flitch shutoff branch material mouth, the dregs or the stone ballast on the supporting slag discharging device in back are carried to the dregs car, after dividing the flitch rotation, divide the material mouth to open, make the dregs or the stone ballast that pass through remove along dividing the flitch through the slope of dividing the flitch, and derive from dividing the material mouth.
In other embodiments of the tunnel boring machine with the synchronous backfilling function, the rear matched slag discharging device can also be arranged along the middle part or the bottom part of the tunnel, at the moment, the crusher and the stirring device are not positioned below the material distributing device, and a conveying device can be arranged between adjacent devices for facilitating the slag soil or the stone slag to enter the crusher and the stirring device.
In other embodiments of the tunnel boring machine with simultaneous backfill, the crusher may also be a toothed roll crusher.
In other embodiments of the tunnel boring machine with the synchronous backfilling function, for the working occasion with smaller ballast, the crusher is not needed, or the arrangement of the cutter head structure is adopted, so that the excavated ballast is smaller, and at the moment, the crusher is not needed, or the shield boring machine for excavating the soil tunnel is not needed.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A tunnel boring machine with a synchronous backfilling function is characterized by comprising:
the main machine (1), the front end of the main machine (1) is provided with a cutter head (11), the main machine (1) comprises a main machine slag discharging device (13), and the main machine slag discharging device (13) is used for conveying slag excavated by the cutter head (11) or stone slag backwards;
the rear matching device (2) is arranged at the rear side of the main machine (1), the rear matching device (2) comprises a rear matching slag discharging device (21), and the rear matching slag discharging device (21) is used for conveying slag or stone slag backwards to the slag car (9);
the material distributing device (3) is arranged on the rear matched slag discharging device (21) and is used for distributing and guiding out partial slag soil or stone slag on the rear matched slag discharging device (21);
the stirring device (5) is arranged at the downstream of the material distributing device (3) and is used for stirring the muck or the stone slag with other raw materials into a backfill material;
a feeding device (6) arranged downstream of the stirring device (5) for feeding backfill material to a backfill region (8);
and the compacting device (7) is used for compacting the backfill material in the backfill region (8) to the required strength.
2. The tunneling machine with the synchronous backfilling function according to claim 1, wherein a crusher (4) is arranged between the material distributing device (3) and the stirring device (5), and the crusher (4) is used for crushing large-sized dregs or stone slag.
3. A tunnel boring machine with synchronous backfilling according to claim 2, characterized in that said crusher (4) is a jaw crusher.
4. The tunneling machine with the synchronous backfilling function according to claim 1, wherein the rear matched slag discharging device (21) is arranged in a transition manner from front to back gradually upwards, and the stirring device (5) is positioned below the material distributing device (3).
5. The tunneling machine with the synchronous backfilling function according to claim 2 or 3, wherein the rear matched slag discharging device (21) is arranged in a transition mode from front to back gradually upwards, and the crusher (4) and the stirring device (5) are both located below the material distributing device (3).
6. The tunneling machine with the synchronous backfilling function according to any one of claims 1-4, wherein the material separating device (3) is a plow discharger.
7. The tunneling machine with the synchronous backfilling function according to any one of claims 1-4, wherein the stirring device (5) is a stirring tank, and the stirring tank comprises a tank body and a driving motor for driving the tank body to rotate forward and backward so as to realize material stirring and feeding.
8. The tunneling machine with the synchronous backfilling function according to any one of claims 1-4, wherein the feeding device (6) is a belt conveyor.
9. The tunneling machine with the synchronous backfilling function according to any one of claims 1-4, wherein the compacting device (7) is a walking type vibratory roller.
10. The tunneling machine with the synchronous backfilling function according to any one of claims 1-4, wherein the rear support (2) comprises a rear support trolley (22), and the stirring device (5) and the feeding device (6) are both mounted on the rear support trolley (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110699444.9A CN113236279A (en) | 2021-06-23 | 2021-06-23 | Tunnel boring machine with synchronous backfilling function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110699444.9A CN113236279A (en) | 2021-06-23 | 2021-06-23 | Tunnel boring machine with synchronous backfilling function |
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| CN113236279A true CN113236279A (en) | 2021-08-10 |
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| CN202110699444.9A Pending CN113236279A (en) | 2021-06-23 | 2021-06-23 | Tunnel boring machine with synchronous backfilling function |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133091A (en) * | 2007-11-29 | 2009-06-18 | Ohbayashi Corp | Treatment equipment, excavated sediment treatment method, excavator, tunnel construction method, and tunnel constructed by the construction method |
| CN102787847A (en) * | 2012-08-24 | 2012-11-21 | 中铁隧道装备制造有限公司 | Roadway tunneling machine |
| CN203035256U (en) * | 2012-12-05 | 2013-07-03 | 飞翼股份有限公司 | Waste rock bashing device capable of preventing waste rock from being lifted to ground from well |
| JP2019157502A (en) * | 2018-03-13 | 2019-09-19 | ▲濱▼新 正博 | Roadbed construction method |
| CN110295947A (en) * | 2019-08-05 | 2019-10-01 | 中南大学 | A kind of shield tunnel solution-cavity filling method |
| CN112321203A (en) * | 2020-10-10 | 2021-02-05 | 上海友品环境服务有限公司 | Formula and process for backfilling mine from bulk solid waste |
| CN112608166A (en) * | 2020-12-21 | 2021-04-06 | 中南大学 | Cement-based carbon slate light backfill material and preparation method thereof |
-
2021
- 2021-06-23 CN CN202110699444.9A patent/CN113236279A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133091A (en) * | 2007-11-29 | 2009-06-18 | Ohbayashi Corp | Treatment equipment, excavated sediment treatment method, excavator, tunnel construction method, and tunnel constructed by the construction method |
| CN102787847A (en) * | 2012-08-24 | 2012-11-21 | 中铁隧道装备制造有限公司 | Roadway tunneling machine |
| CN203035256U (en) * | 2012-12-05 | 2013-07-03 | 飞翼股份有限公司 | Waste rock bashing device capable of preventing waste rock from being lifted to ground from well |
| JP2019157502A (en) * | 2018-03-13 | 2019-09-19 | ▲濱▼新 正博 | Roadbed construction method |
| CN110295947A (en) * | 2019-08-05 | 2019-10-01 | 中南大学 | A kind of shield tunnel solution-cavity filling method |
| CN112321203A (en) * | 2020-10-10 | 2021-02-05 | 上海友品环境服务有限公司 | Formula and process for backfilling mine from bulk solid waste |
| CN112608166A (en) * | 2020-12-21 | 2021-04-06 | 中南大学 | Cement-based carbon slate light backfill material and preparation method thereof |
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Application publication date: 20210810 |