CN101220746A - TBM pilot tunnel expansion digging method for 20km double-line double-cavity ultra-long tunnel construction - Google Patents
TBM pilot tunnel expansion digging method for 20km double-line double-cavity ultra-long tunnel construction Download PDFInfo
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- CN101220746A CN101220746A CNA2008100503607A CN200810050360A CN101220746A CN 101220746 A CN101220746 A CN 101220746A CN A2008100503607 A CNA2008100503607 A CN A2008100503607A CN 200810050360 A CN200810050360 A CN 200810050360A CN 101220746 A CN101220746 A CN 101220746A
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Abstract
The invention provides a TBM pilot tunnel enlarging excavation method which is adopted in 20km dual-line dual-tunnel super-long tunnel construction, belonging to the building technical field of road, railway or bridge. The method is that a. two TBMs respectively with the diameters of 4.2m and 3.5m are adopted so as to excavate from the bottom center of the lower-end tunnel opening of the two parallel tunnels to the high-end direction of the tunnel to form two pivot tunnels A and B; b. enlarged excavation and lining operation are firstly carried out in the B pivot tunnel which passes through a tunnel-typed ventilation air exchange system and a communicated track delivering system which consist of the A pivot tunnel and a transverse passage; c. after the pivot tunnel A and the pivot tunnel B are interpenetrated, only two coal faces at the inlet and the outlet of A line are arranged; d. after the enlarged excavation in B line is completely achieved, 8-10 coal faces are opened to achieve the enlarged excavation of the A line. The invention has the advantages of fast construction speed, small construction operation quantity, economics and safety, has no damages or effects to the plants out of a mountain body, damaging slightly the self-flowing water system which is formed in the mountain body and protecting the around environment of the construction.
Description
Technical field
The invention belongs to the technical field of buildings of road, railway or bridge.
Background technology
At present, the traditional job practices of speciality two-wire double-hole tunnel about 20km is to adopt auxiliary base tunnel to form long tunnel hand-to-hand fight in tights.Several principal modes such as auxiliary base tunnel generally has vertical shaft, inclined shaft, flatly leads, horizontal hole, no matter yet which kind of form all needs the input of a large amount of human, financial, and material resources, construction cost is very high, place, sidewalk, face to build etc. and cause surface vegetation damage to a certain degree, surrounding enviroment are involved, and the balance of hydrogeological conditions is broken.In China, from nineteen nineties, in the water conservancy project project, use major diameter TBM successively, obtained effect preferably, bore explosive expansion again and dig but adopt TBM to convince the hole earlier by patient analysis, each construction field is also beyond example at home.At present China has constructed or tens super long tunnels of Hot work in progress assist base tunnel to be on the upgrade everywhere, and virgin state of stress, the hydrologic condition of whole massif are destroyed, has brought virtually to cause the hidden danger that desertifies.
Summary of the invention
The objective of the invention is:
Provide in the Extra Long Tunnel Construction of the two holes of a kind of 20km two-wire and adopt TBM pilot tunnel expansion digging method, this method is little to surrounding environment influence, has reduced sidewalk, service gallery and place etc. and has faced to build and execute, can be quick, safe, civilized finish construction, and can environmental protection, water protects.
Method of the present invention is:
Method of the present invention is:
1, adopt each 1 of the TBM of diameter 4.2m and 3.5m, the bottom center at the low side hole of two parallel tunnels begins, and high extreme direction driving forms A, B two pilot tunnels to the tunnel, and A, B two pilot tunnels are not established service galleries such as any inclined shaft, vertical shaft.
2, during A, B pilot tunnel driving, the B pilot tunnel is expanded dig and the lining cutting operation earlier, form ventilation by ducts air exchange system and intercommunication formula Orbital Transport Systems by A pilot tunnel and transverse passage-way.
3, A, B pilot tunnel connect back A line and only arrange to import and export two work plane operations, and the B line is dug in concentrated expansion, open up a plurality of scope of operations by the transport power of A pilot tunnel and expand and dig.
4, after the whole expansions of B line are dug and finished,, open up the expansion of 8～10 work planes organizing and implementing A lines and dig by the three-way transportation route of four rails that the B line was laid comprehensively.
The invention has the beneficial effects as follows:
Speed of application is fast, but with existing job practices than the reduction of erection time about 30%.
The construction operation amount is little, and economy, safety have reduced the construction operation cost.
Owing to do not need to excavate auxiliary base tunnels such as vertical shaft, inclined shaft, therefore the outer vegetation of massif is not had yet and destroy and influence, also minimum to the destruction of the artesian water system that forms in the massif, protected the construction surrounding enviroment.
Description of drawings
Fig. 1 is that A of the present invention, B two pilot tunnels are laid cross-section schematic diagram;
Fig. 2 is the vertical disconnected schematic diagram of A of the present invention, B two pilot tunnels and transverse passage-way;
Fig. 3 is a ventilation by ducts schematic diagram of the present invention.
The specific embodiment
As shown in the figure, the 1st, A pilot tunnel, the 2nd, B pilot tunnel, the 3rd, transverse passage-way, the 4th, axial flow blower, the 5th, jet blower, the 6th, TBM and the back supporting, the 7th, track.
1, TBM type selecting
It is 3.5m that diameter is selected in B threaded list road for use, and it is the TBM open type hard rock mole of 4.2m that diameter is selected in A threaded list road for use.
2, the pilot tunnel position is determined
Referring to shown in Figure 1, pilot tunnel is arranged in the position of axis, two tunnels by the bottom.Height is filled end face with the Tunnel Design inverted arch and is done the control of tread face.
3, muck removal
Between A, B two pilot tunnels transverse passage-way is set evenly, forms intercommunication formula Orbital Transport Systems.Transverse passage-way is provided with referring to shown in Figure 2, by " one positive one is anti-" method evenly at interval 1200m be provided with one, preceding two transverse passage-ways of tunnel exit (low side) are arranged to forward, and therebetween apart from boil down to 900m.Elevation is consistent at the bottom of the floor elevation of transverse passage-way and the adjacent AB line pilot tunnel, to make things convenient for draining and to lay the interconnection of line-to-line.
Initial stage is placed on the A line with the focus of work of muck removal system earlier, is born the transport pressure of the overwhelming majority by the A line; Later stage is transferred to the B line again, and the expansion of B line pilot tunnel is dug with the pilot tunnel driving synchronous, and muck removal, charging transportation all rely on the transverse passage-way interconnection of the A line and the most close TBM scope of operation.
Transport capacity is concentrated in the A line pilot tunnel, muck removal, charging haulage vehicle need enter the back supporting portable acting trailer system of TBM main frame tail end from the pilot tunnel midline position, and it is three-way that A line pilot tunnel is laid four rails, between the TBM operation area, two outer rails are done the walking rails of TBM back up system, the mid-rail driving; B line pilot tunnel is laid single line, and expansion is dug the back transport capacity and progressively shifted, and increases two outer rails in shop and is transformed into the three-way transportation system of four rails.
4, ventilate
Two pilot tunnels ventilate referring to shown in Figure 3, the pilot tunnel of the A that utilization advances side by side, two TBM drivings of B line, form tunnel systemic circulation pressure system of ventilation, jet blower is set up in indivedual places, add the forced ventilation circulation, dig blasting fume and enter the fresh air way of A line road for stopping that the B line expands, the photo-electric control self closing door is established in fortune quarrel transverse passage-way end, rear portion.Dig scope of operation position in the brill explosive expansion, adopt portable blower to quicken dirty gas communication.
5, boring explosive expansion digs
Bore explosive expansion and dig elder generation based on the B line, elder generation breaks through the B line, and the A line is cut in segmentation again, and multiple spot is stormed synchronously and defeated in detail, and expansion is dug operation branch " second phase " and implemented.
The first phase: existing conveying track guarantees that with top existing transportation system can be transformed into " four rails are three-way " big transportation system, avoids the repetition operation.
The second phase: the design excavation part that rail level is following, synchronous with the inverted arch construction.
6, preliminary bracing
The preliminary bracing operation is dug work plane immediately following expansion and is carried out.
7, secondary lining
Inverted arch construction: build the self-control platform at each inverted arch construction section, lay twilight orbit on the platform, muck removal transportation and inverted arch are constructed be independent of each other.
Lining construction: lining cutting utilizes whole hydraulic pressure steel chassis, and concrete transfer pump is conveyed into mould, and rail-mounted concrete transfer cart transports concrete, automatic gauge charging, forced action type mixing machine mix concrete.
Claims (1)
1. adopt TBM pilot tunnel expansion digging method in the two holes of a 20km two-wire Extra Long Tunnel Construction, its method is:
A, adopt each 1 of the TBM of diameter 4.2m and 3.5m, the bottom center at the low side hole of two parallel tunnels begins, and high extreme direction driving forms A, B two pilot tunnels to the tunnel, and A, B two pilot tunnels are not established service galleries such as any inclined shaft, vertical shaft;
B, during A, B pilot tunnel driving, the B pilot tunnel is expanded digs and the lining cutting operation earlier, form ventilation by ducts air exchange system and intercommunication formula Orbital Transport Systems by A pilot tunnel and transverse passage-way;
C, A, B pilot tunnel connect back A line and only arrange to import and export two work plane operations, and the B line is dug in concentrated expansion, open up a plurality of scope of operations by the transport power of A pilot tunnel and expand and dig;
After d, the whole expansions of B line are dug and finished,, open up the expansion of 8～10 work planes organizing and implementing A lines and dig by the three-way transportation route of four rails that the B line was laid comprehensively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100503607A CN101220746A (en) | 2008-02-01 | 2008-02-01 | TBM pilot tunnel expansion digging method for 20km double-line double-cavity ultra-long tunnel construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100503607A CN101220746A (en) | 2008-02-01 | 2008-02-01 | TBM pilot tunnel expansion digging method for 20km double-line double-cavity ultra-long tunnel construction |
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| CN101220746A true CN101220746A (en) | 2008-07-16 |
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| CNA2008100503607A Pending CN101220746A (en) | 2008-02-01 | 2008-02-01 | TBM pilot tunnel expansion digging method for 20km double-line double-cavity ultra-long tunnel construction |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061926A (en) * | 2009-11-11 | 2011-05-18 | 中铁十八局集团有限公司 | TBM tunneling and secondary lining synchronous construction method at mucking of continuous belt conveyor and trolley |
| CN101812991B (en) * | 2009-10-30 | 2011-11-16 | 西南交通大学 | Construction method for loop type hypobaric holes of railway tunnel |
| CN102296963A (en) * | 2011-08-01 | 2011-12-28 | 湖南省交通规划勘察设计院 | Construction method for ultra-long deep-buried road tunnel |
| CN102383856A (en) * | 2011-07-12 | 2012-03-21 | 中铁隧道集团二处有限公司 | Transportation method for large-slope parallel adit construction |
| CN101936167B (en) * | 2009-06-29 | 2012-07-18 | 上海市基础工程有限公司 | Construction method for crossing bridge pile foundation by combining bridge underpinning with shield construction |
| CN102787844A (en) * | 2012-07-19 | 2012-11-21 | 中铁十三局集团有限公司 | Tunnel building method for heading pilot tunnel and inclined shaft on super long tunnel with small-diameter heading machine |
| CN102787845A (en) * | 2012-07-19 | 2012-11-21 | 中铁十三局集团有限公司 | Segmented construction method of extra-long tunnels by adopting development machines to construct inclined shafts and headings first |
| CN104675407A (en) * | 2015-01-14 | 2015-06-03 | 中铁第四勘察设计院集团有限公司 | Treatment method of single-line mining method subway tunnel inclined shaft top-hole displacement |
| CN107130977A (en) * | 2017-06-27 | 2017-09-05 | 长江勘测规划设计研究有限责任公司 | Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure and excavation method |
| CN107218043A (en) * | 2017-08-27 | 2017-09-29 | 中铁二十局集团第六工程有限公司 | A kind of breaking surrounding rock cavern excavation method |
| CN109403986A (en) * | 2017-08-16 | 2019-03-01 | 中铁二院工程集团有限责任公司 | The synchronous enlarging of the parallel heading of TBM tunneling construction is the construction method of double line tunnel |
| CN110410095A (en) * | 2019-08-16 | 2019-11-05 | 中铁隧道局集团有限公司 | TBM tunnel construction material dregs transportation method |
| CN110985005A (en) * | 2019-12-23 | 2020-04-10 | 重庆市轨道交通设计研究院有限责任公司 | Construction method of double-hole small-clear-distance large-section underground excavation tunnel with steep slope of side wall rock stratum |
| CN111305852A (en) * | 2020-02-27 | 2020-06-19 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for excavating guide pits in double-track tunnel in advance and in back |
| CN111720132A (en) * | 2020-06-10 | 2020-09-29 | 新汶矿业集团设计研究院有限公司 | Novel ultra-large section roadway rapid tunneling process |
| CN112983431A (en) * | 2021-02-07 | 2021-06-18 | 广州地铁设计研究院股份有限公司 | Construction method for deep-buried intersecting tunnel group in semi-diagenetic region |
| CN113338954A (en) * | 2021-07-16 | 2021-09-03 | 中天建设集团有限公司 | Small-section double-line mining method tunnel construction method |
| CN113530564A (en) * | 2021-07-21 | 2021-10-22 | 四川农业大学 | Design method and system for high-altitude railway tunnel portal emergency rescue station |
| CN113863939A (en) * | 2021-09-27 | 2021-12-31 | 中铁二院工程集团有限责任公司 | Rapid construction method for adopting TBM (tunnel boring machine) to lead double-hole cross tunneling in complex stratum |
| CN114183149A (en) * | 2021-12-14 | 2022-03-15 | 中铁工程装备集团有限公司 | Underground space mechanized construction method based on pilot tunnel expanding excavation |
-
2008
- 2008-02-01 CN CNA2008100503607A patent/CN101220746A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936167B (en) * | 2009-06-29 | 2012-07-18 | 上海市基础工程有限公司 | Construction method for crossing bridge pile foundation by combining bridge underpinning with shield construction |
| CN101812991B (en) * | 2009-10-30 | 2011-11-16 | 西南交通大学 | Construction method for loop type hypobaric holes of railway tunnel |
| CN102061926A (en) * | 2009-11-11 | 2011-05-18 | 中铁十八局集团有限公司 | TBM tunneling and secondary lining synchronous construction method at mucking of continuous belt conveyor and trolley |
| CN102383856A (en) * | 2011-07-12 | 2012-03-21 | 中铁隧道集团二处有限公司 | Transportation method for large-slope parallel adit construction |
| CN102296963A (en) * | 2011-08-01 | 2011-12-28 | 湖南省交通规划勘察设计院 | Construction method for ultra-long deep-buried road tunnel |
| CN102787845A (en) * | 2012-07-19 | 2012-11-21 | 中铁十三局集团有限公司 | Segmented construction method of extra-long tunnels by adopting development machines to construct inclined shafts and headings first |
| CN102787844A (en) * | 2012-07-19 | 2012-11-21 | 中铁十三局集团有限公司 | Tunnel building method for heading pilot tunnel and inclined shaft on super long tunnel with small-diameter heading machine |
| CN104675407A (en) * | 2015-01-14 | 2015-06-03 | 中铁第四勘察设计院集团有限公司 | Treatment method of single-line mining method subway tunnel inclined shaft top-hole displacement |
| CN107130977A (en) * | 2017-06-27 | 2017-09-05 | 长江勘测规划设计研究有限责任公司 | Super-span dome hollow be oriented in underground nuclear reactor cavern excavates structure and excavation method |
| CN107130977B (en) * | 2017-06-27 | 2023-10-10 | 长江勘测规划设计研究有限责任公司 | Hollow guide excavation structure and excavation method for ultra-large span dome of underground nuclear reactor cavity |
| CN109403986A (en) * | 2017-08-16 | 2019-03-01 | 中铁二院工程集团有限责任公司 | The synchronous enlarging of the parallel heading of TBM tunneling construction is the construction method of double line tunnel |
| CN107218043A (en) * | 2017-08-27 | 2017-09-29 | 中铁二十局集团第六工程有限公司 | A kind of breaking surrounding rock cavern excavation method |
| CN110410095B (en) * | 2019-08-16 | 2021-10-08 | 中铁隧道局集团有限公司 | Material residue soil transportation method for tunnel construction of Tunnel Boring Machine (TBM) |
| CN110410095A (en) * | 2019-08-16 | 2019-11-05 | 中铁隧道局集团有限公司 | TBM tunnel construction material dregs transportation method |
| CN110985005A (en) * | 2019-12-23 | 2020-04-10 | 重庆市轨道交通设计研究院有限责任公司 | Construction method of double-hole small-clear-distance large-section underground excavation tunnel with steep slope of side wall rock stratum |
| CN110985005B (en) * | 2019-12-23 | 2021-01-01 | 重庆市轨道交通设计研究院有限责任公司 | Construction method of double-hole small-clear-distance large-section underground excavation tunnel with steep slope of side wall rock stratum |
| CN111305852B (en) * | 2020-02-27 | 2021-10-01 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for excavating guide pits in double-track tunnel in advance and in back |
| CN111305852A (en) * | 2020-02-27 | 2020-06-19 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for excavating guide pits in double-track tunnel in advance and in back |
| CN111720132A (en) * | 2020-06-10 | 2020-09-29 | 新汶矿业集团设计研究院有限公司 | Novel ultra-large section roadway rapid tunneling process |
| CN111720132B (en) * | 2020-06-10 | 2022-02-25 | 新汶矿业集团设计研究院有限公司 | Novel ultra-large section roadway rapid tunneling process |
| CN112983431A (en) * | 2021-02-07 | 2021-06-18 | 广州地铁设计研究院股份有限公司 | Construction method for deep-buried intersecting tunnel group in semi-diagenetic region |
| CN113338954A (en) * | 2021-07-16 | 2021-09-03 | 中天建设集团有限公司 | Small-section double-line mining method tunnel construction method |
| CN113338954B (en) * | 2021-07-16 | 2024-04-12 | 中天建设集团有限公司 | Tunnel construction method by small-section double-line mining method |
| CN113530564A (en) * | 2021-07-21 | 2021-10-22 | 四川农业大学 | Design method and system for high-altitude railway tunnel portal emergency rescue station |
| CN113863939A (en) * | 2021-09-27 | 2021-12-31 | 中铁二院工程集团有限责任公司 | Rapid construction method for adopting TBM (tunnel boring machine) to lead double-hole cross tunneling in complex stratum |
| CN114183149A (en) * | 2021-12-14 | 2022-03-15 | 中铁工程装备集团有限公司 | Underground space mechanized construction method based on pilot tunnel expanding excavation |
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