CN105257310A - Heading face advance protective type shield - Google Patents
Heading face advance protective type shield Download PDFInfo
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- CN105257310A CN105257310A CN201510739431.4A CN201510739431A CN105257310A CN 105257310 A CN105257310 A CN 105257310A CN 201510739431 A CN201510739431 A CN 201510739431A CN 105257310 A CN105257310 A CN 105257310A
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- cutterhead
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Abstract
The invention discloses a heading face advance protective type shield, and belongs to the technical field of excavation machinery and construction processes of tunnels and underground structure engineering. The shield comprises two sets of driving systems, which respectively drive an annular cutterhead and an inner cutterhead. The extension-type annular cutterhead mainly plays a role of cutting off a soil body, and can dynamically adjust a cutterhead extension amount according to a turning radius and actual working conditions, so as to adjust the thickness of protective soil; the main part of the soil body is cut by the inner cutterhead, and hardly any influence on the upper and lower soil body exists due to the protection of the annular cutterhead and shield shell wall during a cutting process. The shield can enable a heading face to cut through an existing built (constructed) underground structure more closely and safely, and safe heading of the shield in shallow buried soil and even ultra-shallow buried soil can be realized, so the shield has important meaning for the improvement of underground space utilization and construction safety.
Description
Technical field
The present invention relates to a kind of Tunnel and Underground Architectural Engineering excavation mechinery device, be specifically related to a kind of development end protection in advance formula shield structure.Be applied to the construction of closely passing through under the existing building in underground and shallow earthing operating mode, guarantee that construction safety is reliable.
Background technology
Along with continually developing of urban underground space, on the one hand, the existing building in underground are more and more intensive, and shield structure closely passes through existing building and becomes more frequent; On the other hand, the underground space also becomes more valuable, but shield structure constructional difficulties in shallow earthing, make the subaerial underground space cause waste.
Shield construction can produce construction disturbance to tunnel surrounding soil, affect by it, generation is out of shape by tunnel basic building in the neighbourhood, Settlement and displacement, controls improperly building performance may be made to have an impact destructive construction accident even occurs.In addition, the disturbance of excavation face formation will cause soil body particle consolidation again, be the principal element causing ground posterior settlement, when shallow earthing construction, shield structure front soil body in tunneling process is difficult to form soil arching effect, easily produces caving in of shield structure otch top and soil at both sides.
Closely connecing and construct with shallow earthing for present stage shield structure, take mainly engineering experience as Main Basis, in conjunction with FEM Simulation and indoor model test, the key risk factor in prediction work progress, and then determine construction parameter, play the complementary directive function to practice of construction.But in above-mentioned auxiliary construction measure, numerical method can not the project situation of real simulation complexity, and parameter and choosing of fringe conditions also have considerable influence to analog result, to predict the outcome and unreliable.In addition, indoor model test, can not actual response practice of construction process completely because of the impact of the choosing of analog material, test operation error.As can be seen here, existing shield structure closely connects and shallow earthing construction method, all can not truly adapt to construction environment complicated and changeable, can not guarantee construction safety, thus has a strong impact on carrying out smoothly of construction.
In existing Suporting structure of the same type, a kind of earth pressure balance type annular shield machine (201010130542.2) of patent of invention mainly have developed the Novel shield transformed existing tunnel be under Different Strata condition, although can ensure the safety excavated, it can not carry out advance support when excavating newly built tunnels construction to surrounding soil.Patent of invention shield machine (201010145279.4) mainly have developed the bite of adjustable-angle, this shield machine achieves the laying function with camber pipeline, but the construction disturbance of this shield machine formation destroys comparatively large, the safety driving under super close distance crossing construction condition can not be ensured.Utility model patent Large stone sand-pebble layer earth pressure balanced shield, EPBS (201220062771.X) has mainly carried out local improvement to existing shield machine, shorten construction period, stabilize boring parameter, but it mainly improves is only for anhydrous Large stone sand-pebble layer, to the constructing tunnel of soft clay region, there is limitation, do not have a promotional value.Patent of invention shield digging device and shield machine (201310697532.0), by the improvement to excavating gear, reduce the volume of the excavating gear of shield machine, adopt the form of pivoting support can bear larger digging force.But this part improves and does not consider the ground disturbance produced of closely constructing, fail the real technical requirements realizing reducing construction disturbance and then realize closely constructing.Patent of invention opened type shield machine (201410174390.4) effectively can keep the stable of excavation face by arranging supporting grid, reduces landslide risk.But the supporting grid in this patent of invention is by excavation face multidomain treat-ment, the soil body after cutting can free landing, and the top soil body unavoidably there will be the space that caves in, and this can cause considerable risk to closely construction.
In sum, all there is many technical or operational weak points in existing similar shield machine device.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art; and a kind of development end protection in advance formula shield structure is provided; when this shield structure is mainly for common shield-tunneling construction; the influence basin of development end to surrounding soil is large; close on the susceptibility that the soil body affects by construction control high; shield cutter is improved, thus the disturbance of excavation face to surrounding soil is greatly reduced.This shield structure can be guaranteed to pass through the existing building in underground more close-distance safety, can realize shield structure at the even ultra-shallow earth-covered middle safety driving of shallow earthing, have great significance for raising underground space utilization rate and construction safety.
Create object for reaching foregoing invention, the present invention adopts following technical proposals:
A kind of development end protection in advance formula shield structure, comprises interior cutterhead, annular cutterhead, sliding extension adjusting device, endless knife disk drive shaft, interior cutter plate driver device, endless knife disk drive, dividing plate, the mechanical, electrical motivation of screw conveyor, dregs conveyer and shield structure jack; In described shield structure, cutterhead is connected with the interior cutter plate driver device at dividing plate rear, and in regulating, cutter plate driver device is to adjust interior knife cutting parameter; Described interior cutterhead periphery is provided with Telescopic ring cutterhead, sliding extension adjusting device is provided with between interior cutterhead and annular cutterhead, described annular cutterhead is connected with dividing plate by endless knife disk drive shaft, cutter plate driver control room controls annular cutter plate driver device and drives dividing plate and endless knife disk drive shaft, drives annular cutterhead to rotate and realizes cutting; Be native cabin between described interior cutterhead and dividing plate, stirring rod is installed at interior cutterhead rear portion, and described screw conveyor machine is connected with bottom, native cabin, cuts dregs and fully stirs through stirring rod, by Motor Control screw conveyor machine and through dregs conveyer discharge cabin body; Shield shell afterbody is provided with the shield structure jack of arranging in the form of a ring, and built-in section of jurisdiction is evaded through shield structure jack and is mounted to ring from shield tail.
Described annular cutterhead is provided with ring-shaped distributed cutter; Interior cutterhead is furnished with the type selecting cutter larger than cutter.
Described sliding extension adjusting device comprises rolling pulley, extension and contraction control room and telescopic shaft, and described annular cutterhead is connected with interior cutterhead by rolling pulley, and extension and contraction control room controls annular cutterhead stroke by the telescopic shaft be attached thereto.
The present invention compared with prior art, has following substantive distinguishing features and advantage:
1. development end protection in advance formula shield structure of the present invention adopts the design of annular cutterhead, can cut off the soil body in advance, interior cutterhead development end is greatly reduced soil layer disturbance around;
2. the design of scalable annular cutterhead according to turning radius and actually can pass through spacing dynamic adjustments cutterhead stroke, and then the thickness range of the soil of adjustment protection in time, reduces the disturbance of driving to soil layer, and then building around Reasonable Protection;
3. protection in advance formula shield structure adopts two cover drive systems, drives respectively, the synchronous cutting of cutterhead and annular cutterhead in tunable, and then more reasonably reduce construction disturbance to annular cutterhead and interior cutterhead;
4. in the present invention annular cutterhead and interior cutterhead be combined design, because annular cutterhead makes excavation face and surrounding soil isolate, what make shield structure reduce newly built tunnels and existing tunnel further when being close to existing building crossing construction passes through spacing, reduce construction risk, effectively increase the resistance to overturning of excavation face;
5. in shield structure of the present invention, cutterhead front, the top soil body can allow to occur the space that caves in; when screw conveyor machine is unearthed too fast; because annular cutterhead makes excavation face and surrounding soil isolate; what first extruded when being unearthed slow is the protected soil body in interior cutterhead front; also there is a buffering course to the impact of surrounding formation, shield driving safety can be guaranteed.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention one development end protection in advance formula shield structure.
Fig. 2 is the cutterhead floor map of the embodiment of the present invention one development end protection in advance formula shield structure.
Fig. 3 is the sliding extension adjusting device structural representation of the embodiment of the present invention one development end protection in advance formula shield structure.
Detailed description of the invention
The preferred embodiments of the present invention accompanying drawings is as follows:
Embodiment one:
See Fig. 1, a kind of development end protection in advance formula shield structure, is characterized in that: comprise interior cutterhead 1, annular cutterhead 2, sliding extension adjusting device 3, endless knife disk drive shaft 4, interior cutter plate driver device 5, endless knife disk drive 6, dividing plate 7, screw conveyor machine 8, motor 9, dregs conveyer 10 and shield structure jack 11; In described shield structure, cutterhead 1 is connected with the interior cutter plate driver device 5 at dividing plate 7 rear, and in regulating, cutter plate driver device 5 is to adjust interior cutterhead 1 cutting parameter; Described interior cutterhead 1 periphery is provided with Telescopic ring cutterhead 2, sliding extension adjusting device 3 is provided with between interior cutterhead 1 and annular cutterhead 2, described annular cutterhead 2 is connected with dividing plate 7 by endless knife disk drive shaft 4, cutter plate driver control room 18 controls annular cutter plate driver device 6 and drives dividing plate 7 and endless knife disk drive shaft 4, drives annular cutterhead 2 to rotate and realizes cutting; It is native cabin 16 between described interior cutterhead 1 and dividing plate 7, stirring rod 17 is installed at interior cutterhead 1 rear portion, described screw conveyor machine 8 is connected with bottom, native cabin 16, cuts dregs and fully stirs through stirring rod 17, control screw conveyor machine 8 and discharge cabin body through dregs conveyer 10 by motor 9; Shield shell afterbody is provided with the shield structure jack 11 of arranging in the form of a ring, and built-in section of jurisdiction 12 is evaded through shield structure jack 11 and is mounted to ring from shield tail.
Operating principle of the present invention and the course of work are: cutter plate driver device 5 and endless knife disk drive 6 in opening, and in driving respectively, cutterhead 1 rotates with annular cutterhead 2, realizes soil cutting; Rolling pulley 13 in regulable control sliding extension adjusting device 3 to control annular cutterhead 2 stroke, and then controls, the scope of adjustment protection soil; Cutter plate driver device 5 and endless knife disk drive 6 in adjustment respectively, the synchronous cutting of cutterhead 1 and annular cutterhead 2 in coordinating; Cut dregs and enter native cabin 16 through cutterhead open pores, add the adding material of raising dregs stream plasticity as collapsible loess, soil improvement agent etc. simultaneously, after stirring rod 17 fully stirs, drive screw conveyor machine 8 to discharge native cabin 16 by motor 9, then via dregs conveyer 10, dregs is transported to ground in hole; Shield structure jack 11 applies axial jacking force to assembled complete section of jurisdiction 12 in early stage and advances shield structure to advance in shield tunneling process; After section of jurisdiction 12 is mounted to ring by weight lifting arm, evades through shield structure jack top 11 and realize surrounding rock supporting from shield tail.
Embodiment two:
The present embodiment is substantially identical with embodiment one, and special feature is:
In the present embodiment, see Fig. 2, annular cutterhead 2 is provided with ring-shaped distributed cutter 14, and bite, according to Practical Project Rational choice, can be replaced by hobboing cutter in case of when cutting gravel or hard rock by cutter 14 arrangement form and cutter 14 shape; Interior cutterhead 1 reasonable Arrangement cutter 15 according to actual needs, cutter 15 type selecting is generally large than the cutter 14 of annular cutterhead 2.
Embodiment three:
The present embodiment is substantially identical with embodiment one, and special feature is:
In the present embodiment, see Fig. 3, described sliding extension adjusting device 3 comprises rolling pulley 13, extension and contraction control room 19 and telescopic shaft 20, and described annular cutterhead 2 is connected with interior cutterhead 1 by rolling pulley 13, and extension and contraction control room 19 controls annular cutterhead 2 stroke by the telescopic shaft 20 be attached thereto.
Claims (3)
1. a development end protection in advance formula shield structure, is characterized in that: comprise interior cutterhead (1), annular cutterhead (2), sliding extension adjusting device (3), endless knife disk drive shaft (4), interior cutter plate driver device (5), endless knife disk drive (6), dividing plate (7), screw conveyor machine (8), motor (9), dregs conveyer (10) and shield structure jack (11); In described shield structure, cutterhead (1) is connected with the interior cutter plate driver device (5) at dividing plate (7) rear, and in regulating, cutter plate driver device (5) is to adjust interior cutterhead (1) cutting parameter; Described interior cutterhead (1) periphery is provided with Telescopic ring cutterhead (2), sliding extension adjusting device (3) is provided with between interior cutterhead (1) and annular cutterhead (2), described annular cutterhead (2) is connected with dividing plate (7) by endless knife disk drive shaft (4), cutter plate driver control room (18) controls annular cutter plate driver device (6) and drives dividing plate (7) and endless knife disk drive shaft (4), drives annular cutterhead (2) to rotate and realizes cutting; Be native cabin (16) between described interior cutterhead (1) and dividing plate (7), stirring rod (17) is installed at interior cutterhead (1) rear portion, described screw conveyor machine (8) is connected with native cabin (16) bottom, cut dregs fully to stir through stirring rod (17), control screw conveyor machine (8) by motor (9) and discharge cabin body through dregs conveyer (10); Shield shell afterbody is provided with the shield structure jack (11) of arranging in the form of a ring, and built-in section of jurisdiction (12) are evaded through shield structure jack (11) and are mounted to ring from shield tail.
2. development end protection in advance formula shield structure according to claim 1, is characterized in that: described annular cutterhead (2) is provided with ring-shaped distributed cutter (15); Interior cutterhead (1) is furnished with the type selecting cutter (14) larger than cutter (15).
3. development end protection in advance formula shield structure according to claim 1; it is characterized in that: described sliding extension adjusting device (3) comprises rolling pulley (13), extension and contraction control room (19) and telescopic shaft (20); described annular cutterhead (2) is connected with interior cutterhead (1) by rolling pulley (13), and extension and contraction control room (19) control annular cutterhead (2) stroke by the telescopic shaft (20) be attached thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739431.4A CN105257310A (en) | 2015-11-04 | 2015-11-04 | Heading face advance protective type shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739431.4A CN105257310A (en) | 2015-11-04 | 2015-11-04 | Heading face advance protective type shield |
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| CN105257310A true CN105257310A (en) | 2016-01-20 |
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| CN201510739431.4A Pending CN105257310A (en) | 2015-11-04 | 2015-11-04 | Heading face advance protective type shield |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863655A (en) * | 2016-04-01 | 2016-08-17 | 石家庄铁道大学 | Active soil stirring system of large tunnel boring machine |
| CN106869165A (en) * | 2017-02-20 | 2017-06-20 | 曾庆如 | City integrated prefabricated piping lane open cut formula is from construction of prevention work method and self-propelled laydown machine |
| CN107387102A (en) * | 2017-08-22 | 2017-11-24 | 华东交通大学 | A kind of reconstruction shield machine of shield tunnel |
| CN108005670A (en) * | 2017-12-12 | 2018-05-08 | 北京交通大学 | A kind of shield cuts armored concrete clump of piles system |
| CN108018882A (en) * | 2017-12-20 | 2018-05-11 | 中南大学 | A kind of shallow embedding pipe gallery engineering integrative construction device |
| CN108468548A (en) * | 2018-05-16 | 2018-08-31 | 华东交通大学 | A kind of annular scissors-type cutter head of shield machine device |
| CN108798688A (en) * | 2018-06-01 | 2018-11-13 | 中国科学院武汉岩土力学研究所 | Realize that the combination type T BM that gets rid of poverty of card machine and card machine get rid of poverty driving method |
| CN109236309A (en) * | 2018-10-27 | 2019-01-18 | 重庆大学 | A kind of telescopic cutterhead that can be got rid of poverty after cutter head of shield machine is stuck |
| CN111648779A (en) * | 2020-05-09 | 2020-09-11 | 徐州工程学院 | Shield head system capable of effectively reducing surrounding rock disturbance |
| CN112360493A (en) * | 2020-11-11 | 2021-02-12 | 安徽唐兴机械装备有限公司 | Telescopic pipe jacking machine cutter head |
| CN112682057A (en) * | 2021-01-11 | 2021-04-20 | 湖南师范大学 | Heading machine cutter head suitable for extremely hard rock stratum |
| CN113622935A (en) * | 2021-08-25 | 2021-11-09 | 中国铁建重工集团股份有限公司 | Junctional passage tunneling equipment |
| CN114001891A (en) * | 2021-10-27 | 2022-02-01 | 腾达建设集团股份有限公司 | Experimental device for shield cutter head vibration response |
| CN115045671A (en) * | 2021-03-09 | 2022-09-13 | 广东工业大学 | Shield automatic tool changer system capable of sensing tool abrasion |
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| US2758825A (en) * | 1951-03-29 | 1956-08-14 | Wohlmeyer Josef | Machine for boring galleries, tunnels, channels and the like by cutting action |
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| CN102562084A (en) * | 2012-03-15 | 2012-07-11 | 中交天和机械设备制造有限公司 | TBM (tunnel boring machine) cutter expansion and contraction device |
| CN203130088U (en) * | 2013-04-01 | 2013-08-14 | 中国铁建重工集团有限公司 | Telescopic mechanism for master drive of full-face tunnel boring machine |
| CN104948198A (en) * | 2015-06-17 | 2015-09-30 | 蚌埠市行星工程机械有限公司 | Active telescopic shield cutter mechanism |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US2758825A (en) * | 1951-03-29 | 1956-08-14 | Wohlmeyer Josef | Machine for boring galleries, tunnels, channels and the like by cutting action |
| JPH02243899A (en) * | 1989-03-16 | 1990-09-27 | Komatsu Ltd | Ebullition preventing execution method for discharged soil by shield excavator machine |
| CN201351496Y (en) * | 2009-02-09 | 2009-11-25 | 上海力行工程技术发展有限公司 | Dual-cutter large soil pressure balance shield machine |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863655A (en) * | 2016-04-01 | 2016-08-17 | 石家庄铁道大学 | Active soil stirring system of large tunnel boring machine |
| CN106869165A (en) * | 2017-02-20 | 2017-06-20 | 曾庆如 | City integrated prefabricated piping lane open cut formula is from construction of prevention work method and self-propelled laydown machine |
| CN107387102A (en) * | 2017-08-22 | 2017-11-24 | 华东交通大学 | A kind of reconstruction shield machine of shield tunnel |
| CN107387102B (en) * | 2017-08-22 | 2023-11-14 | 华东交通大学 | Reconstruction shield machine for shield tunnel |
| CN108005670A (en) * | 2017-12-12 | 2018-05-08 | 北京交通大学 | A kind of shield cuts armored concrete clump of piles system |
| CN108018882A (en) * | 2017-12-20 | 2018-05-11 | 中南大学 | A kind of shallow embedding pipe gallery engineering integrative construction device |
| CN108018882B (en) * | 2017-12-20 | 2023-09-26 | 中南大学 | Shallow comprehensive pipe rack engineering integrated construction device |
| CN108468548A (en) * | 2018-05-16 | 2018-08-31 | 华东交通大学 | A kind of annular scissors-type cutter head of shield machine device |
| CN108468548B (en) * | 2018-05-16 | 2023-11-07 | 华东交通大学 | Cutter head device of annular scissor type shield tunneling machine |
| CN108798688A (en) * | 2018-06-01 | 2018-11-13 | 中国科学院武汉岩土力学研究所 | Realize that the combination type T BM that gets rid of poverty of card machine and card machine get rid of poverty driving method |
| CN109236309A (en) * | 2018-10-27 | 2019-01-18 | 重庆大学 | A kind of telescopic cutterhead that can be got rid of poverty after cutter head of shield machine is stuck |
| CN111648779B (en) * | 2020-05-09 | 2021-07-27 | 徐州工程学院 | Shield head system capable of effectively reducing surrounding rock disturbance |
| CN111648779A (en) * | 2020-05-09 | 2020-09-11 | 徐州工程学院 | Shield head system capable of effectively reducing surrounding rock disturbance |
| CN112360493A (en) * | 2020-11-11 | 2021-02-12 | 安徽唐兴机械装备有限公司 | Telescopic pipe jacking machine cutter head |
| CN112360493B (en) * | 2020-11-11 | 2022-11-22 | 安徽唐兴装备科技股份有限公司 | Telescopic pipe jacking machine cutter head |
| CN112682057A (en) * | 2021-01-11 | 2021-04-20 | 湖南师范大学 | Heading machine cutter head suitable for extremely hard rock stratum |
| CN112682057B (en) * | 2021-01-11 | 2021-11-23 | 湖南师范大学 | Heading machine cutter head suitable for extremely hard rock stratum |
| CN115045671A (en) * | 2021-03-09 | 2022-09-13 | 广东工业大学 | Shield automatic tool changer system capable of sensing tool abrasion |
| CN113622935A (en) * | 2021-08-25 | 2021-11-09 | 中国铁建重工集团股份有限公司 | Junctional passage tunneling equipment |
| CN113622935B (en) * | 2021-08-25 | 2024-04-09 | 中国铁建重工集团股份有限公司 | Communication channel tunneling equipment |
| CN114001891A (en) * | 2021-10-27 | 2022-02-01 | 腾达建设集团股份有限公司 | Experimental device for shield cutter head vibration response |
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