CN108018882B - An integrated construction device for shallow buried comprehensive pipe corridor engineering - Google Patents

An integrated construction device for shallow buried comprehensive pipe corridor engineering Download PDF

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Publication number
CN108018882B
CN108018882B CN201711382501.0A CN201711382501A CN108018882B CN 108018882 B CN108018882 B CN 108018882B CN 201711382501 A CN201711382501 A CN 201711382501A CN 108018882 B CN108018882 B CN 108018882B
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CN
China
Prior art keywords
telescopic
plate
cutterhead
pipe gallery
soil
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Expired - Fee Related
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CN201711382501.0A
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Chinese (zh)
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CN108018882A (en
Inventor
雷明锋
林越翔
黄毅翔
段强
罗文帮
施成华
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Central South University
China Construction Tunnel Construction Co Ltd
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Central South University
China Construction Tunnel Construction Co Ltd
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Priority to CN201711382501.0A priority Critical patent/CN108018882B/en
Publication of CN108018882A publication Critical patent/CN108018882A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention discloses an integrated construction device for shallow-buried comprehensive pipe gallery engineering, the device comprises a telescopic cutterhead which is arranged on a steel plate at the upper part of a tunneling surface and can move up and down along the upper part of the tunneling surface and is used for cutting soil; a fixed cutter head for cutting soil bodies is arranged on the steel plate at the lower part of the tunneling surface; a soil cabin is arranged behind the fixed cutter head; one end of the screw conveyor is arranged in the soil cabin, and the other end of the screw conveyor is arranged above one end of the dregs conveying belt; the other end of the dregs conveying belt extends out of the pipe gallery. The invention integrates the excavation system and the support system, saves the time and construction cost for additionally building the support structure, and greatly improves the construction efficiency.

Description

Shallow comprehensive pipe rack engineering integrated construction device
Technical Field
The invention relates to the technical field of urban underground comprehensive pipe gallery construction, in particular to a shallow-buried comprehensive pipe gallery engineering integrated construction device
Background
In recent years, the construction of urban underground comprehensive pipe galleries is highly emphasized in China, construction test point work is actively carried out in each large city, and the construction of the urban underground comprehensive pipe galleries in China also comes to the peak period of construction. However, since the construction work of the utility tunnel is just started, there are still many places for reinforcement and improvement in construction technology and construction method.
At present, a certain achievement accumulation exists in the construction technology of the comprehensive pipe rack in China, for example, an invention patent CN104912101A discloses a tunneling assembly structure of the comprehensive pipe rack and a construction method thereof. The novel comprehensive pipe gallery tunneling assembly structure and the construction method are provided by combining the shield tunneling machine with the pushing device of the pushing device, so that the construction efficiency of the comprehensive pipe gallery is improved to a certain extent. The invention patent CN105625469A discloses a construction method of an assembled prefabricated comprehensive pipe rack, which is characterized in that hoisting equipment is operated on a paved bottom plate, and a side plate and a top plate structure are reversely constructed after a paved top plate is completed, so that construction and time cost for constructing a temporary road are saved. The invention patent CN205743914U discloses an underground comprehensive pipe gallery construction device and a combined body, designs a tunneling device arranged along the cross section of a prefabricated pipe gallery, and provides a new thought for accelerating the construction speed of the underground pipe gallery by matching with a corresponding pushing device.
The comprehensive analysis of the existing comprehensive pipe rack construction technology shows that in the process of building the comprehensive pipe rack, a side wall structure supporting system is additionally built, or slope releasing treatment is carried out on the side wall. The traditional construction technology not only increases the engineering quantity, but also restricts the speed of constructing the utility tunnel. Meanwhile, the dregs generated in the excavation process cannot be timely and reasonably utilized, so that the construction cost is increased, and the resource waste is also caused.
Aiming at the defects existing in the construction technology of the urban underground comprehensive pipe rack, the design of a novel quick construction means capable of realizing the support-free urban underground comprehensive pipe rack has become a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problems of providing the integrated construction device for the shallow comprehensive pipe gallery engineering, which aims to overcome the defects of the prior art, improves the construction efficiency, avoids the dismantling procedure of the traditional support, has more flexible support mode and avoids the waste of resources of slag soil outward transportation.
In order to solve the technical problems, the invention adopts the following technical scheme: the integrated construction device for the shallow comprehensive pipe gallery engineering comprises a telescopic cutterhead which is arranged on a steel plate at the upper part of a tunneling surface, can move up and down along the upper part of the tunneling surface and is used for cutting soil; a fixed cutter head for cutting soil bodies is arranged on the steel plate at the lower part of the tunneling surface; a soil cabin is arranged behind the fixed cutterhead; one end of the screw conveyor is arranged in the soil cabin, and the other end of the screw conveyor is arranged above one end of the dregs conveying belt; the other end of the dregs conveying belt extends out of the pipe gallery.
The side wall of the soil cabin is provided with a cutter engine for driving the telescopic cutter disc and the fixed cutter disc.
And two sides of the telescopic cutterhead are respectively connected with a telescopic guard board which can move up and down in the vertical direction.
The bottom end of the telescopic guard plate is contacted with the guard plate jack; the two telescopic guard plates are connected through a plurality of cross braces.
The top end of the telescopic cutterhead is hinged with the telescopic supporting plate; the telescopic supporting plates are obliquely arranged, and a telescopic structure is arranged in the middle of each telescopic supporting plate; the telescopic supporting plate is hinged with the shield top plate.
And a tool rest jack is arranged at the bottom end of the telescopic cutterhead.
The telescopic structure comprises a plurality of fixed barbs and a plurality of barb carrier plates; the fixed barbs and the barb carrier plates are arranged at intervals, and telescopic rods are arranged on the barb carrier plates; when the telescopic cutterhead moves upwards, the telescopic rod and the barb carrier plate extend out, so that the telescopic structure is prolonged; when the telescopic cutterhead moves downwards, the telescopic rod is retracted, and the barb carrier plate is retracted, so that the telescopic structure is shortened.
The device also comprises a pushing mechanism; the pushing mechanism comprises a pushing device; the thrusters are in contact with the bearing plate, and the periphery of the bearing plate is fixedly connected with the shield top plate, the shield bottom plate and the fixed guard plate respectively. The fixed cutter head, the soil cabin and other structures and the shield surrounding guard plates are integrated, the bearing plate is fixedly connected with the shield surrounding guard plates, and force is transmitted to the guard plates and transmitted to the excavation system through the guard plates, so that the whole structure is pushed forward.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the excavation system and the support system are integrated, so that the time and construction cost for additionally building the support structure are saved, and the construction efficiency is greatly improved; the supporting system is advanced along the tunneling direction along with the excavating system through the action of the pushing mechanism, so that the dismantling procedure of the traditional support is avoided, the supporting mode is more flexible, and the construction method is simpler; the backfill system can rapidly remove the dregs in the soil cabin, realize the on-site utilization of the dregs, avoid the waste of resources of the external transportation of the dregs, accord with the construction concept of green and environment protection, and simultaneously can recover the ground traffic or the ground surface in the shortest time.
Drawings
FIG. 1 is a side view of an embodiment of the present invention.
Fig. 2 is a front view of an embodiment of the present invention.
Fig. 3 is a view showing the structure of the steel support according to the present invention.
Fig. 4 is a detailed schematic view of the telescopic strut.
FIG. 5 is a schematic view of the detailed construction of the telescoping shield.
Detailed Description
As shown in fig. 1 and 2, an embodiment of the present invention includes an excavation system for rapidly excavating and timely removing dregs to form a construction piping lane working space; the support system is used for providing temporary support and providing a safe working environment for construction of the pipe gallery main body structure; the backfill system realizes the on-site utilization of the dregs, backfills the constructed pipe gallery main body structure and quickly restores road traffic or ground surface; the pushing mechanism provides power for the advancing of the excavation system.
As shown in fig. 2, 3 and 4, the excavation system is composed of a telescopic cutterhead 11, a fixed cutterhead 12, a telescopic supporting plate 13, a cutter engine 14, a cutter frame jack 15 and the like. The telescopic cutterhead 11 is hinged with the telescopic supporting plate 13, and is lifted and lowered through the tool rest jack 15 so as to adapt to different buried depth working conditions and complete the cutting of the soil body above the pipe gallery structural main body. The fixed cutterhead 12 is inlaid in a steel plate 19 below the tunneling surface, and cutting of soil body of the main structure part of the pipe gallery is completed. The telescopic supporting plate 13 is inlaid in a steel plate 110 at the upper part of the tunneling surface and hinged with a shield top plate 111, and the telescopic supporting plate 13 is internally structured to provide support for a telescopic cutter head so as to balance soil pressure. The cutter engine 14 provides power for proper operation of the cutter.
The telescopic structure in the middle of the telescopic supporting plate consists of fixed barbs 16, telescopic rods 17 and barb carrier plates 18. By the action of the telescopic rod 17, when the telescopic cutter head ascends, the barb carrier plate 18 is put down to be meshed with the fixed barb 16; when the telescopic cutterhead descends, the telescopic cutterhead 11 is further lifted by the tool rest jack 15, and then the barb carrier plate 18 is retracted, so that the cutterhead moves downwards.
As shown in fig. 5, the support system is composed of telescoping fenders 21, steel braces (i.e., cross braces 22) and fender jacks 23. The telescopic guard plate 21 is connected with the telescopic cutter head 11 and is flush, and the height of the guard plate is adjusted through guard plate jacks 23 so as to adapt to different burial depth working conditions. The steel supports play a stiffening role, are fixedly connected with the left guard plate and the right guard plate, and enhance the capability of inhibiting the deformation of the side wall. The support system is fixedly connected to the cutterhead structure, and the support system advances along the excavation direction along with the excavation system, so that temporary support of an excavated but unfinished pipe gallery main body structure construction section is realized, the traditional foundation pit support work is avoided, the construction efficiency is improved, and the time and the construction cost are saved.
The backfill system is composed of a soil bin 31, a screw conveyor 32 and a muck conveyor 33. The construction process adopts an open cut method for construction, and the slag in the soil cabin 31 can be removed to the ground surface through the screw conveyor 32 and the slag conveyer belt 33, and backfill materials are provided, so that the on-site utilization of the slag is realized, the waste of resources for the outward transportation of the slag is avoided, and the construction concept of green and environment protection is met.
The pushing mechanism comprises a bearing plate 41 and a pushing device 42. The pushing device 42 is composed of at least one jack, the tail end of the pushing device is arranged in a pipe gallery structure, the front section of the pushing device is arranged in the bearing plate 41, and the pushing device is uniformly distributed around the shield in the circumferential direction. By setting the jacking force of the jack, power is provided for the advance of the excavation system, and the tunneling posture can be adjusted.
And hoisting the device of the invention into the existing foundation pit, and completing the lap joint and assembly among the systems. According to actual working conditions, the telescopic cutterhead and the telescopic guard plate are adjusted through the tool rest jack and the guard plate jack, so that the tops of the excavation system and the support system are flush with the ground surface.
Firstly, the telescopic cutterhead and the fixed cutterhead of the excavation system are used for tunneling forwards simultaneously, so that an operation space for building the comprehensive pipe gallery is formed.
In the forward tunneling process, the telescopic guard plate and the steel support are combined to restrain the deformation of the soil body on the side wall and balance the soil pressure on the side wall, so that a stable working environment is provided for the construction of the main structure.
And then, through a backfilling system, the muck in the soil cabin is transferred to a pipe gallery part after construction is completed and the predetermined requirement is met through the combined operation of the screw conveyor and the muck conveyor belt, and the muck is taken as a backfilling material.
After the construction of the pipe gallery main body structure of the corresponding section is completed, the whole device is pushed forward through the pushing device in the pushing mechanism to enter the next working cycle.

Claims (4)

1.一种浅埋综合管廊工程一体化施工装置，其特征在于，包括设置于掘进面上部钢板（110）上且能沿掘进面上部上下移动、用于切削土体的伸缩式刀盘（11）；掘进面下部钢板上设置有用于切削土体的固定刀盘（12）；所述固定刀盘（12）后方设置有土舱（31）；螺旋输送机（32）一端设置于土舱（31）内，另一端设置于渣土传送带（33）一端上方；所述渣土传送带（33）另一端伸出管廊；所述伸缩式刀盘（11）顶端与伸缩撑板（13）铰接；伸缩撑板（13）镶嵌于掘进面上部钢板，同盾构顶板（111）铰接；所述伸缩撑板（13）倾斜设置，且所述伸缩撑板（13）中部设置有伸缩结构；所述伸缩撑板（13）与盾构顶板（111）铰接；所述伸缩结构包括多个固定倒刺（16）、多个倒刺承板（18）；所述固定倒刺（16）、倒刺承板（18）间隔设置，所述倒刺承板（18）上设置有伸缩棒（17）；当所述伸缩式刀盘（11）向上移动时，所述伸缩棒（17）、倒刺承板（18）伸出，使得所述伸缩结构延长；当所述伸缩式刀盘（11）向下移动时，所述伸缩棒（17）缩回，所述倒刺承板（18）缩回，使得所述伸缩结构缩短；所述伸缩式刀盘（11）两侧各与一块能在垂直方向上下移动的伸缩式护板（21）连接；所述伸缩式护板（21）底端与护板千斤顶（23）接触；两块所述伸缩式护板（21）之间通过多根横撑（22）连接。1. An integrated construction device for shallow-buried comprehensive pipe gallery engineering, characterized by including a telescopic cutterhead (110) that is disposed on the upper steel plate (110) of the excavation surface and can move up and down along the upper part of the excavation surface for cutting soil. 11); a fixed cutterhead (12) for cutting soil is provided on the lower steel plate of the excavation face; a soil cabin (31) is provided behind the fixed cutterhead (12); one end of the screw conveyor (32) is provided in the soil compartment (31), the other end is arranged above one end of the muck conveyor belt (33); the other end of the muck conveyor belt (33) extends out of the pipe gallery; the top of the telescopic cutterhead (11) is connected to the telescopic support plate (13) Hinged; the telescopic support plate (13) is embedded in the upper steel plate of the excavation surface and hinged with the shield top plate (111); the telescopic support plate (13) is arranged at an angle, and a telescopic structure is provided in the middle of the telescopic support plate (13); The telescopic support plate (13) is hingedly connected to the shield top plate (111); the telescopic structure includes a plurality of fixed barbs (16) and a plurality of barb bearing plates (18); the fixed barbs (16), Barb bearing plates (18) are arranged at intervals, and telescopic rods (17) are provided on the barb bearing plates (18); when the telescopic cutterhead (11) moves upward, the telescopic rods (17), The barb bearing plate (18) extends, causing the telescopic structure to extend; when the telescopic cutterhead (11) moves downward, the telescopic rod (17) retracts, and the barb bearing plate (18) ) is retracted to shorten the telescopic structure; both sides of the telescopic cutterhead (11) are connected to a telescopic guard plate (21) that can move up and down in the vertical direction; the telescopic guard plate (21) The bottom end is in contact with the guard plate jack (23); the two telescopic guard plates (21) are connected through a plurality of horizontal braces (22). 2.根据权利要求1所述的浅埋综合管廊工程一体化施工装置，其特征在于，所述土舱（31）侧壁上设置有用于驱动所述伸缩式刀盘（11）和所述固定刀盘（12）的刀具引擎（14）。2. The integrated construction device for shallow-buried comprehensive pipeline corridor engineering according to claim 1, characterized in that, the side wall of the soil cabin (31) is provided with a retractable cutterhead (11) for driving the retractable cutterhead (11) and the The cutter engine (14) holds the cutter head (12). 3.根据权利要求1所述的浅埋综合管廊工程一体化施工装置，其特征在于，所述伸缩式刀盘（11）底端设置有刀架千斤顶（15）。3. The integrated construction device for shallow-buried comprehensive pipe gallery engineering according to claim 1, characterized in that a tool holder jack (15) is provided at the bottom of the telescopic cutterhead (11). 4.根据权利要求1所述的浅埋综合管廊工程一体化施工装置，其特征在于，还包括顶推机构；所述顶推机构包括顶推器（42）；所述顶推器（42）与承力板（41）接触，承力板四周分别固结于盾构顶板（111）、底板以及固定式护板。4. The integrated construction device for shallow-buried comprehensive pipe gallery engineering according to claim 1, characterized in that it also includes a pushing mechanism; the pushing mechanism includes a pusher (42); the pusher (42) ) is in contact with the load-bearing plate (41), and the surroundings of the load-bearing plate are respectively fixed to the shield top plate (111), the bottom plate and the fixed guard plate.
CN201711382501.0A 2017-12-20 2017-12-20 An integrated construction device for shallow buried comprehensive pipe corridor engineering Expired - Fee Related CN108018882B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109184724B (en) * 2018-09-03 2024-04-12 广州地铁设计研究院股份有限公司 Construction device and method for pushing open cut method
CN115369915B (en) * 2022-09-15 2023-07-04 中冶京诚工程技术有限公司 Excavation support device for comprehensive utility gallery and its operation method
CN117071597A (en) * 2023-08-29 2023-11-17 中国长江三峡集团有限公司 A trench support piece, trench support structure, construction device and construction method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10266782A (en) * 1997-03-28 1998-10-06 Okumura Corp Rectangular section tunnel excavator
CN101949292A (en) * 2010-09-27 2011-01-19 徐积勉 Cutter head structure provided with plurality of layers of flexible spokes and capable of cutting non-round section tunnel
CN104153784A (en) * 2014-07-08 2014-11-19 同济大学 A mud-water balanced horseshoe shield machine
CN105201521A (en) * 2015-09-11 2015-12-30 河南奥斯派克科技有限公司 Size-variable and shape-changing shield tank and excavation rescue method
CN105257310A (en) * 2015-11-04 2016-01-20 上海大学 Heading face advance protective type shield
CN106593455A (en) * 2017-02-27 2017-04-26 中铁工程装备集团有限公司 Full section tunneling self-propelled type U-shaped shield tunneling machine
CN206408640U (en) * 2017-01-10 2017-08-15 广州市九通环保科技有限公司 A kind of joint dividing device at geotechnological soil-baffling structure expansion joint
CN107338765A (en) * 2017-08-22 2017-11-10 中国水利水电科学研究院 The surface preform structure and its construction method of a kind of expansion joint sealing
CN207974146U (en) * 2017-12-20 2018-10-16 中南大学 A kind of shallow embedding pipe gallery engineering integrative construction device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10266782A (en) * 1997-03-28 1998-10-06 Okumura Corp Rectangular section tunnel excavator
CN101949292A (en) * 2010-09-27 2011-01-19 徐积勉 Cutter head structure provided with plurality of layers of flexible spokes and capable of cutting non-round section tunnel
CN104153784A (en) * 2014-07-08 2014-11-19 同济大学 A mud-water balanced horseshoe shield machine
CN105201521A (en) * 2015-09-11 2015-12-30 河南奥斯派克科技有限公司 Size-variable and shape-changing shield tank and excavation rescue method
CN105257310A (en) * 2015-11-04 2016-01-20 上海大学 Heading face advance protective type shield
CN206408640U (en) * 2017-01-10 2017-08-15 广州市九通环保科技有限公司 A kind of joint dividing device at geotechnological soil-baffling structure expansion joint
CN106593455A (en) * 2017-02-27 2017-04-26 中铁工程装备集团有限公司 Full section tunneling self-propelled type U-shaped shield tunneling machine
CN107338765A (en) * 2017-08-22 2017-11-10 中国水利水电科学研究院 The surface preform structure and its construction method of a kind of expansion joint sealing
CN207974146U (en) * 2017-12-20 2018-10-16 中南大学 A kind of shallow embedding pipe gallery engineering integrative construction device

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