CN204511445U - With the hard rock mole of double-deck supporting and variable section of jurisdiction diameter - Google Patents
With the hard rock mole of double-deck supporting and variable section of jurisdiction diameter Download PDFInfo
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- CN204511445U CN204511445U CN201520153540.3U CN201520153540U CN204511445U CN 204511445 U CN204511445 U CN 204511445U CN 201520153540 U CN201520153540 U CN 201520153540U CN 204511445 U CN204511445 U CN 204511445U
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Abstract
The utility model discloses a kind of hard rock mole with double-deck supporting and variable section of jurisdiction diameter, comprise can dig cutterhead, expandable circular shield, flexible steel bow member assembling machine, duct piece assembling machine etc.In the process that described hard rock mole tunnels at High stress zone, by digging, flexible support, section of jurisdiction supporting, the note technique such as beans gravel and slip casting coordinative operation, creatively card shield is prevented trouble before it happens, meanwhile, by the mode of mechanization, the lining cutting operation of hard rock tunnel is accomplished without any letup.Therefore, the utility model can avoid the card shield problem of hard rock mole, and then improves drivage efficiency, meanwhile, also can shorten time and the amount of labour used of hard rock tunnel lining cutting.
Description
Technical field
The utility model relates to tunnel construction technique field, particularly relates to a kind of hard rock mole with double-deck supporting and variable section of jurisdiction diameter.
Background technology
Due to the needs of China's modernization development, tunnel construction has been widely used in the numerous areas such as traffic, water conservancy, communication, metallurgy.A lot of tunnel has the features such as long, large, buried, complex geologic conditions, and the advantages such as hard rock mole (i.e. TBM) is wide with its excavation formation hardness scope, operating environment good, the level of informatization is high, high construction efficiency, is widely used in during tunnel builds.
When shield formula hard rock mole passes through poor country rock, when especially passing through the fault belt of Deep-buried Long And Big tunnel, surrouding rock deformation is large, easy landslide, and the radial displacement of working as country rock is greater than the preset clearance between shield shell and outline excavation face, causes shield shell to be stuck, is referred to as card shield.Card shield causes programming and has a strong impact on, and such as, in Kunming Gongshan tunneling with TBM, the downtime of causing due to card shield accounts for 53% of total time in 1 to April.The impact that card shield is constructed on hard rock mole is very big, and at present, the major measure of reply card shield problem is the technology of getting rid of poverty after card shield, such as: side drift method, service gallery method and other artificial factures etc.And these techniques and methods are all less than solving card shield problem from root, be the counter-measure taked after card shield problem occurs.
Therefore, in conjunction with current advanced detection technology, by detecting the ground stress of tunnel excavation front of tunnel heading and analyze, how to take effective wording, make hard rock mole in tunneling process, avoid the generation of card shield phenomenon, become the effective way solving card shield problem from root.
Utility model content
The purpose of this utility model is to provide a kind of hard rock mole with double-deck supporting and variable section of jurisdiction diameter, by digging the method with flexible support, in the process of High stress zone driving, card shield phenomenon is there is for avoiding, and can in the process of driving, flexible steel bow member and section of jurisdiction are laid simultaneously, has saved time and the amount of labour used of lining cutting after tunnel piercing.
For achieving the above object, the technical scheme taked is:
A kind of hard rock mole with double-deck supporting and variable section of jurisdiction diameter, comprise and dig cutterhead, drive the main driving digging cutterhead driving, the main girder that main driving rearward end connects, carry out temporary support and radial telescopic circular shield, be arranged on the connect box of the main propelling cylinder of the support after main girder and slide crossbeam, described main girder is arranged flexible steel bow member assembling machine, described sliding on crossbeam is provided with duct piece assembling machine, the described cutterhead that digs comprises and digs cutterhead body and dig hobboing cutter with a series of of different angles digging cutterhead body perimeter, the described hobboing cutter that digs is arranged on digs on cutterhead body by digging hob head, dig hob head and dig cutterhead body hinged, and dig to be provided with bottom hob head control that each digs the hobboing cutter amount of digging dig propelling cylinder.
Described circular shield comprises shield body, along at least 3 pieces of peripheral boards of shield body circumference uniform distribution and the support propelling cylinder of driving peripheral board radial expansion.
Described when digging cutterhead and digging, each push-in stroke digging propelling cylinder is along digging cutterhead body in form of going forward one by one.
The described hobboing cutter quantity that digs is at least 3, and each digs uniform being arranged on of hobboing cutter and digs cutterhead body outer rim, and each amount of digging digging hobboing cutter is circumferentially gone forward one by one in equal difference.
Adopt technique scheme, acquired beneficial effect is:
1. hard rock mole of the present utility model is the card shield phenomenon for existing in prior art, a kind of brand-new resolving ideas is provided, and it is the new improvement to existing equipment, by to digging cutterhead, the improvement of circular shield structure can effectively improve the stability digging the degree of depth and supporting, facilitate the assembled of the Concrete precast pipe element of the assembled and rigidity of follow-up flexible steel bow member, its reasonable in design, digs even increase.
2. the utility model adopts the synergy of flexible support and the dual supporting of rigid protection, in the process of High stress zone driving, card shield phenomenon is there is for avoiding, and can guarantee in the process of the driving digging cutterhead, flexible steel bow member and section of jurisdiction are laid simultaneously, has saved time and the amount of labour used of lining cutting after tunnel piercing.
3. double-deck supporting of the present invention refers to that flexible steel bow member and rigid concrete prefabricated section act on the support pattern of tunnel, tunnel simultaneously, it solves deformation of tunnel to the clamping stagnation problem of development machine, utilize the flexible tunnel geostatic stress that solves to discharge, utilize rigidity to solve structure stress problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of hard rock mole of the present utility model.
Fig. 2 for dig cutterhead upper angle A place dig forward and backward dig hob-cutter structure contrast schematic diagram.
Fig. 3 for dig cutterhead upper angle B place dig forward and backward dig hob-cutter structure contrast schematic diagram.
Fig. 4 for dig cutterhead upper angle C place dig forward and backward dig hob-cutter structure contrast schematic diagram.
Fig. 5 is the structural representation of circular shield retracted mode.
Fig. 6 is the structural representation that circular shield stretches out state.
Sequence number in figure: 1 for digging cutterhead, 101 for digging cutterhead body, 102 for digging hobboing cutter, 103 for digging hob head, 104 for digging propelling cylinder, 2 is main driving, 3 is main girder, 4 is circular shield, 401 is shield body, 402 is peripheral board, 403 for supporting propelling cylinder, 5 is connect box, 6 is main propelling cylinder, 7 for sliding crossbeam, 8 is flexible steel bow member assembling machine, 9 is duct piece assembling machine, 10 is steel arch-shelf, 11 is prefabricated pipe section, 12 is inverted arch block, 13 is beans gravel, 14 is cement grout.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is elaborated.
See Fig. 1-Fig. 6, a kind of hard rock mole with double-deck supporting and variable section of jurisdiction diameter, comprise and dig cutterhead 1, drive the main driving 2 digging cutterhead 1 and tunnel, the main girder 3 that main driving 2 rearward end connects, carry out temporary support and radial telescopic circular shield 4, be arranged on the connect box 5 of the main propelling cylinder 6 of the support after main girder 3 and slide crossbeam 7, described main girder 3 is arranged flexible steel bow member assembling machine 8, described sliding on crossbeam 7 is provided with duct piece assembling machine 9, the described cutterhead 1 that digs comprises and digs cutterhead body 101 and dig hobboing cutter 102 with a series of of different angles digging cutterhead body 101 periphery, the described hobboing cutter 102 that digs is arranged on digs on cutterhead body 101 by digging hob head 103, dig hob head 103 and dig cutterhead body 101 hinged, and dig to be provided with bottom hob head 103 control that each digs the hobboing cutter amount of digging dig propelling cylinder 104, described circular shield 4 comprises shield body 401, along the polylith peripheral board 402 of shield body 401 circumference uniform distribution, with the support propelling cylinder 403 driving peripheral board 402 radial expansion, described when digging cutterhead 1 and digging, each push-in stroke digging propelling cylinder is along digging cutterhead body in form of going forward one by one.
Wherein, the diameter digging cutterhead 1 excavated section when non-digging is φ 1=8000mm; Position along cutterhead periphery 120 °, interval be respectively provided with possess the difference amount of digging dig hobboing cutter 102, as shown in Figure 2, digging hobboing cutter 102 digs hob head 103 by it and digs cutterhead body 101 hinged, when digging, dig propelling cylinder 104 to promote to dig hob head 103 and make to dig hobboing cutter 102 and stretch out the certain size in cutterhead outer respectively, these radial dimensions are often the amount of digging of cutter, wherein d1=100mm, d2=200mm, d3=300mm.The numerical value of d1, d2, d3 goes forward one by one mutually, in order to ensure rational cutter spacing, thus, along with the rotation digging cutterhead 1, uniformly the digging diameter of cutterhead can be increased to φ 2=8600mm.
The peripheral board 402 of circular shield 4 is along the circumferential direction divided into 4 pieces, upper and lower, left and right, as shown in Figure 5.Every block coaming plate all can stretch along circular shield 4 radial direction, like this, digs after 1 at cutterhead, and the peripheral board of radial expansion can carry out temporary support to tunnel surrounding, as shown in Figure 6.Wherein, before shield stretches out, (as shown in Figure 3) is the tunnel periphery of φ 1=8000mm for supporting excavation diameter, and after shield stretches out, (as shown in Figure 3) is the tunnel periphery of φ 2=8600mm for supporting excavation diameter.
Flexible bow member assembling machine 8 and duct piece assembling machine 9 can synchronous workings.At driving, owner drives the rearward end of 2 to be connected with main girder 3, and main girder 3 rearward end is connected with the connect box 5 supporting main propelling cylinder 6, and what connect box 5 rear board of main propelling cylinder 6 is connected with installation duct piece assembling machine 9 slides crossbeam 7.Flexible bow member assembling machine 8 is taken root on main driving 2 rearward end and main girder 3, and duct piece assembling machine 9 is ridden in sliding on crossbeam 7.Flexible bow member assembling machine 8 is for the consolidation service of flexible steel bow member, duct piece assembling machine 9 and the acting in conjunction of main propelling cylinder 6, complete the consolidation service of prefabricated pipe section 11, because of the front-back staggered in the consolidation service of steel arch-shelf and the consolidation service Existential Space of prefabricated pipe section, along the tunneling direction in tunnel, the place of axial location 3750mm before pipe sheet assembling position that described flexible steel bow member is assembled, therefore can synchronization job.Wherein, the spacing of every ring flexible steel bow member is 750mm, and the width of every ring prefabricated pipe section is 1500mm, and therefore, fixing the riding on two ring flexible steel bow members of every endless tube sheet, so designs, can ensure the axial location between section of jurisdiction and flexible steel bow member.
Before the prefabricated pipe section 11 of each ring assembled, first lay a slice inverted arch block 12 in the bottom in tunnel, the width dimensions of inverted arch block 12 is 1500mm, identical with the width dimensions of every endless tube sheet, there is groove bottom inverted arch block 12, flexible steel bow member 10 is embedded among groove, for the mutual location of inverted arch block 12 and flexible steel bow member 10, in addition, inverted arch block 12 and flexible steel bow member 10 also play a part in slip casting front support domain section of jurisdiction.
After 4 endless tube sheets have been laid, carry out cavity filled up and grout cures injecting beans gravel 13 and cement grout 14 in the cavity between flexible steel bow member and prefabricated pipe section.
Claims (4)
1. the hard rock mole with double-deck supporting and variable section of jurisdiction diameter, it is characterized in that, comprise and dig cutterhead, drive the main driving digging cutterhead driving, the main girder that main driving rearward end connects, carry out temporary support and radial telescopic circular shield, be arranged on the connect box of the main propelling cylinder of the support after main girder and slide crossbeam, described main girder is arranged flexible steel bow member assembling machine, described sliding on crossbeam is provided with duct piece assembling machine, the described cutterhead that digs comprises and digs cutterhead body and dig hobboing cutter with a series of of different angles digging cutterhead body perimeter, the described hobboing cutter that digs is arranged on digs on cutterhead body by digging hob head, dig hob head and dig cutterhead body hinged, and dig to be provided with bottom hob head control that each digs the hobboing cutter amount of digging dig propelling cylinder.
2. the hard rock mole with double-deck supporting and variable section of jurisdiction diameter according to claim 1, it is characterized in that, described circular shield comprises shield body, along at least 3 pieces of peripheral boards of shield body circumference uniform distribution and the support propelling cylinder of driving peripheral board radial expansion.
3. the hard rock mole with double-deck supporting and variable section of jurisdiction diameter according to claim 1, is characterized in that, described when digging cutterhead and digging, each push-in stroke digging propelling cylinder is along digging cutterhead body in form of going forward one by one.
4. the hard rock mole with double-deck supporting and variable section of jurisdiction diameter according to claim 1 or 3, it is characterized in that, the described hobboing cutter quantity that digs is at least 3, each digs uniform being arranged on of hobboing cutter and digs cutterhead body outer rim, and each amount of digging digging hobboing cutter is circumferentially gone forward one by one in equal difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520153540.3U CN204511445U (en) | 2015-03-18 | 2015-03-18 | With the hard rock mole of double-deck supporting and variable section of jurisdiction diameter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520153540.3U CN204511445U (en) | 2015-03-18 | 2015-03-18 | With the hard rock mole of double-deck supporting and variable section of jurisdiction diameter |
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| CN204511445U true CN204511445U (en) | 2015-07-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747200A (en) * | 2015-03-18 | 2015-07-01 | 中铁工程装备集团有限公司 | Pipe segment diameter adjustable hard rock tunneling machine adopting double-layer supporting mode and construction method thereof |
| CN106968681A (en) * | 2017-05-19 | 2017-07-21 | 黄河勘测规划设计有限公司 | Broken rock cutterhead suitable for open type development machine |
| CN109113755A (en) * | 2018-10-26 | 2019-01-01 | 中铁工程装备集团有限公司 | Novel single-tool disk can be changed shield body rock tunnel(ling) machine |
| CN109915152A (en) * | 2019-04-16 | 2019-06-21 | 燕山大学 | A kind of collection bores the shield type excavator of expansion support integratedization |
| CN110469337A (en) * | 2019-09-04 | 2019-11-19 | 中交天和机械设备制造有限公司 | A kind of method that shield machine tunnels synchronous segment assembly |
| CN114086974A (en) * | 2021-11-10 | 2022-02-25 | 江苏马超地下工程设备有限公司 | External diameter driven variable cutter head and diameter changing method |
| CN116537803A (en) * | 2023-06-01 | 2023-08-04 | 中国矿业大学(北京) | Rock burst control type TBM system and construction method |
-
2015
- 2015-03-18 CN CN201520153540.3U patent/CN204511445U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747200A (en) * | 2015-03-18 | 2015-07-01 | 中铁工程装备集团有限公司 | Pipe segment diameter adjustable hard rock tunneling machine adopting double-layer supporting mode and construction method thereof |
| CN104747200B (en) * | 2015-03-18 | 2017-03-01 | 中铁工程装备集团有限公司 | Construction method with double-deck supporting and the hard rock mole of variable section of jurisdiction diameter |
| CN106968681A (en) * | 2017-05-19 | 2017-07-21 | 黄河勘测规划设计有限公司 | Broken rock cutterhead suitable for open type development machine |
| CN109113755A (en) * | 2018-10-26 | 2019-01-01 | 中铁工程装备集团有限公司 | Novel single-tool disk can be changed shield body rock tunnel(ling) machine |
| CN109113755B (en) * | 2018-10-26 | 2023-10-10 | 中铁工程装备集团有限公司 | Novel single-cutterhead variable shield tunnel boring machine |
| CN109915152A (en) * | 2019-04-16 | 2019-06-21 | 燕山大学 | A kind of collection bores the shield type excavator of expansion support integratedization |
| CN109915152B (en) * | 2019-04-16 | 2020-05-22 | 燕山大学 | Shield type heading machine integrating drilling, expanding and supporting |
| CN110469337A (en) * | 2019-09-04 | 2019-11-19 | 中交天和机械设备制造有限公司 | A kind of method that shield machine tunnels synchronous segment assembly |
| CN114086974A (en) * | 2021-11-10 | 2022-02-25 | 江苏马超地下工程设备有限公司 | External diameter driven variable cutter head and diameter changing method |
| CN116537803A (en) * | 2023-06-01 | 2023-08-04 | 中国矿业大学(北京) | Rock burst control type TBM system and construction method |
| CN116537803B (en) * | 2023-06-01 | 2024-01-26 | 中国矿业大学(北京) | Rock burst control type TBM system and construction method |
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