CN105604555A - Pipe-jacking tunnel and construction method of pipe-jacking tunnel - Google Patents
Pipe-jacking tunnel and construction method of pipe-jacking tunnel Download PDFInfo
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- CN105604555A CN105604555A CN201610141808.0A CN201610141808A CN105604555A CN 105604555 A CN105604555 A CN 105604555A CN 201610141808 A CN201610141808 A CN 201610141808A CN 105604555 A CN105604555 A CN 105604555A
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- 238000010276 construction Methods 0.000 title claims abstract description 81
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 238000010008 shearing Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000005728 strengthening Methods 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 14
- 239000002002 slurry Substances 0.000 abstract description 7
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000013049 sediment Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000001921 mouthing effect Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a pipe-jacking tunnel and a construction method of the pipe-jacking tunnel. The construction method comprises the following steps that S1, an original well of the pipe-jacking tunnel is constructed and built; S2, a reinforcement layer is formed on the outer side of an arc-shaped turning section of the pipe-jacking tunnel; S3, construction device installation is performed, and jacking operation is conducted on the pipe-jacking tunnel; S4, a receiving well of the pipe-jacking tunnel is constructed and built. The strength of the ground at the construction position can be greatly improved through the reinforcement layer formed by casting slurry in an area to be reinforced of the outer side of the arc-shaped turning section, accordingly the arc-shaped turning section can bear a radial pushing force caused by an eccentric force, the phenomenon that a jacked pipe deviates towards the outer side of the arc-shaped turning section and the construction quality is affected is avoided, meanwhile construction safety accidents caused by buckling failure of a soil body can be also prevented, and smooth implementation of pipe joint jacking construction is ensured.
Description
Technical field
The present invention relates to push pipe tunnel construction technology field, especially relate to a kind of push pipe tunnel and push pipe tunnelConstruction method.
Background technology
Push bench process is as a kind of non-excavating construction method in tunnel, because it is to urban transportation and Environmental security shadowThe outstanding advantages such as sound is little, advanced technology, effect is high, construction cost is lower, in urban electric power constructing tunnelObtain applying more and more widely.
Busy city proper electric power tunnel circuit selects to be subject to the densely covered municipal pipeline of Urban Underground, intensive building basePlinth, the busy many factors such as road traffic and urban planning restrict, and tunnel line has to wriggling sometimesUnder Yan road, extend, whole piece electric power tunnel is divided into some tunnel construction sections, between each tunnel construction sections, must be turned by littleSweep tunnel construction sections connects. Compare tight turn radius curve tunnel with general curve section tunnel with straightwayThe construction by pipeline jacking method difficulty in road (radius of turn is less than 150m) is large, technical requirement is high, axis direction is difficult to controlMake, especially in soft layer, carry out the construction by pipeline jacking method of tight turn radius curved tunnel, soft layer oftenBe difficult to bear the radial thrust that eccentric top power causes, very easily cause push pipe tunnel axis to extra curvature lateral deviation from,And cannot be along the tunnel axis jacking of design, the soil compaction effect that simultaneously axis runout produces will cause groundProtuberance and sedimentation, the safety that can threaten pipeline and ground buildings or structures, the serious soil that also may causeBody unstable failure, causes construction safety accident. In addition, tube coupling is in jack-in process, and its end face bears axiallyEffect when thrust and radial shear, the flat mouth end face docking of conventional steel mouthing tube coupling, easily produces pipeSave end face faulting of slab ends and cause leaking. At present, for tight turn radius curved tunnel, generally adopt at curve tunnelThe mode of inserting vertical shaft in the middle of road section replaces curved tunnel with broken line tunnel, to solve construction difficult problem. But,The construction of inserting vertical shaft in the middle of curved tunnel section will greatly increase construction costs and extend the duration, also simultaneouslyTo produce severe jamming to traffic and urban environment.
Summary of the invention
Based on this, the invention reside in the defect that overcomes prior art, a kind of push pipe tunnel and push pipe tunnel are providedConstruction method, improve soil strength by grouting and reinforcing, the radial thrust causing to bear eccentric top power,Avoid push pipe to extra curvature lateral deviation from, prevent simultaneously sediment failure destroy and cause construction safety accident, guaranteeCarrying out smoothly of tube coupling jacking construction.
The object of the present invention is achieved like this:
The construction method in push pipe tunnel, comprises the steps:
S1, construction push pipe tunnel starting well;
S2, at the formation back-up coat in the arc turnaround section outside in push pipe tunnel;
S3, construction equipment are installed, and push pipe tunnel carries out jacking operation;
S4, construction push pipe tunnel received well.
Below further technical scheme is described:
Further, reinforcing area is treated in the outside formation that was also included in described arc turnaround section before step S2And injected hole, described injected hole and described regional connectivity to be processed.
Further, in step S2, the diameter of described arc turnaround section is d, described arc turnaround section bagDraw together initiating terminal and clearing end, the length range of described back-up coat serve as reasons the initiating terminal of described arc turnaround section front 0～2d place is to 0～2d place after the clearing end of described arc turnaround section.
Further, in step S2, the thickness range of described back-up coat is 0.5d～3d.
The push pipe that the present invention also provides a kind of construction method of the push pipe tunnel as described in the claims to buildTunnel, comprises push pipe body, and described push pipe body comprises arc turnaround section, the outside of described arc turnaround sectionBe provided with and treat reinforcing area, described in treat that reinforcing area is covered with back-up coat.
Further, the two ends of described back-up coat are equipped with bottom incline section.
Further, the material of described back-up coat is cement mortar, mortar or concrete grout.
Further, described arc turnaround section comprises at least two sections of tube segment, and two sections of described tube segment compriseOne tube segment and the second tube segment, an end face of described the first tube segment is provided with blind mortise, described the second tube segmentOne end relative with described blind mortise is provided with tenon, and described blind mortise and described tenon coordinate clamping.
Further, also comprise connection steel loop, described connection steel ring cap be loaded on described the first tube segment with described inThe joint of the second tube segment.
Further, also comprise multiple strengthening mechanisms of arranging along the bearing of trend of described arc turnaround section, instituteState strengthening mechanism and comprise section setting anti-shearing of interconnection first and along described arc turnaround sectionTwo anti-shearing.
Beneficial effect of the present invention is:
The construction method in above-mentioned push pipe tunnel is treated reinforcing area described in the outside in described arc turnaround sectionBuild slurries and form described back-up coat, can greatly improve the intensity in construction place soil, thereby make described arcTurnaround section is born the radial thrust that eccentric force causes, avoids push pipe to depart to the outside of described arc turnaround section,Affect construction quality, can also prevent from causing construction safety accident because sediment failure destroys, guarantee pipe simultaneouslyCarrying out smoothly of joint jacking construction.
Slurries shape is built by treating reinforcing area described in the outside in described arc turnaround section in above-mentioned push pipe tunnelBecome described back-up coat, can greatly improve the intensity in construction place soil, thereby described arc turnaround section is bornThe radial thrust that eccentric force causes, avoids push pipe to depart to the outside of described arc turnaround section, impact construction matterAmount, can also prevent from causing construction safety accident because sediment failure destroys simultaneously, guarantees tube coupling jacking constructionCarry out smoothly.
Brief description of the drawings
Fig. 1 is the structural representation in the push pipe tunnel described in the embodiment of the present invention;
Fig. 2 is the profile in the push pipe tunnel described in the embodiment of the present invention;
Fig. 3 is the structural representation of the tube segment described in the embodiment of the present invention.
Description of reference numerals:
100, push pipe body, 120, arc turnaround section, 122, tube segment, 123, blind mortise, 124, firstTube segment, 125, tenon, 126, the second tube segment, 200, treat reinforcing area, 300, back-up coat, 320,Bottom incline section, 400, injected hole, 500, connect steel loop, 600, strengthening mechanism, 620, the first shearing resistanceCut part, 640, second anti-shearing, 700, push pipe tunnel starting well, 800, push pipe tunnel received well.
Detailed description of the invention
Below embodiments of the invention are elaborated:
As shown in Figure 1, the construction method in a kind of push pipe tunnel, comprises the steps:
S1, construction push pipe tunnel starting well 700;
S2, at the described back-up coat 300 of formation in described arc turnaround section 120 outsides in push pipe tunnel;
S3, construction equipment are installed, and push pipe tunnel carries out jacking operation;
S4, construction push pipe tunnel received well 800.
Please refer to Fig. 2 is that example describes, and push pipe tunnel is arranged in silt soil strata, and above-mentioned push pipe tunnel alsoComprise two straightways that are connected with described arc turnaround section 120 two ends, and two length of straigh line are respectively200m and 220m, the length of described arc turnaround section is 188.5m, radius of curvature R=120m, push pipe external diameter2940mm, internal diameter 2500mm, wall thickness 220mm, the anti-shearing screw thread of intersection of Φ 16 is buried at the two ends of tube segment undergroundReinforcing bar, constructs successively according to the following step: outside the push pipe tunnel curved section of 1. construction of working shaft → 2., slip casting addsGu → 3. datum mark establish and the jacking pipe joints of shaft centerline measurement → 4. installation of construction equipment → 5. in place → 6. tube couplingThe construction procedure of jacking → 7. slip casting drag reduction → 8. repeat 5.-7. until tube coupling jacking near received well → 9. connectReceive well construction → 10. head jacking received well → sling head do completion cleaning.
The construction method in above-mentioned push pipe tunnel is waited to reinforce by described in the outside in described arc turnaround section 120Region 200 is built slurries and is formed described back-up coat 300, can greatly improve the intensity in construction place soil, therebyMake described arc turnaround section 120 bear the radial thrust that eccentric force causes, avoid push pipe to turn to described arcDepart from the outside of section, affects construction quality, can also prevent from causing construction peace because sediment failure destroys simultaneouslyFull accident, guarantees carrying out smoothly of tube coupling jacking construction. It should be pointed out that above-mentioned " first, second ... .. "Only for the differentiation to same item with refer to, the not restriction of the protection domain to quantity etc.
The outside that was also included in described arc turnaround section 120 before step S2 forms treats reinforcing area 200 HesInjected hole 400, described injected hole 400 is communicated with described region 200 to be processed. Calculate by theory, canObtain the size of the construction area of sufficient intensity and volume, reach thus the object of reinforcing soil layer intensity, withTime can also reduce materials cost as far as possible, reduce spending. Afterwards by building toward the interior perfusion of described injected hole 400Build the construction that slurries can complete described back-up coat 300, build process is simple, reliable. PreferablyIn embodiment, can build multiple described injected holes 400 and carry out pouring construction simultaneously, can greatly carry thusHigh efficiency of construction, reduces construction period.
In step S2, the diameter of described arc turnaround section 120 is d, and described arc turnaround section comprises initialEnd and clearing end, the length range of described back-up coat 300 is served as reasons before the initiating terminal of described arc turnaround section 1200～2d place is to 0～2d place after the clearing end of described arc turnaround section 120. Wherein, described in, treat reinforcing area200 for being covered in the pouring region of the certain area in jacking pipeline top, by the length restriction of described back-up coat 300Front 0～the 2d of the initiating terminal place of the described arc turnaround section 120 of serving as reasons is to the clearing end of described arc turnaround section 120In the scope at rear 0～2d place, playing good soil mass consolidation intensity, preventing that push pipe is because being sent out by radial thrustWhen raw lateral deviation, can also reduce construction cost and time preferably, improve efficiency of construction.
In addition, the thickness range of described back-up coat 300 is the extremely described arc of outer wall of described arc turnaround section 1200.5d～3d place, outside of z bend section 120. The thickness of described back-up coat 300 is defined as to described arc to be turnedThe outer wall of curved segment 120, to 0.5d～3d place, outside of described arc turnaround section 120, ensures described reinforcing simultaneouslyLayer 300 and the center superposition in push pipe tunnel, and the thickness of the above-below direction of preferred described back-up coat be 0.5d～2d, can realize and prevent that push pipe from turning because the radial thrust of bearing eccentric top power and causing produces to described arcThe problem that depart from the outside of section 120, further can also play to the soil body of construction periphery the effect of reinforcing,Guarantee construction safety.
The push pipe that the present invention also provides a kind of construction method of the push pipe tunnel as described in the claims to buildTunnel, comprises push pipe body 100, and described push pipe body comprises arc turnaround section 120, described arc turnaround section120 outside is provided with treats reinforcing area 200, described in treat that reinforcing area 200 is covered with back-up coat 300.
Wherein, above-mentioned push pipe tunnel is mainly for the stressed offset problem to curved section constructing tunnel in Soft Soil LayerSolve, concrete is in the larger arc length of the described arc turnaround section 120 of described push pipe body 100Reinforcing area 200 is treated described in reserving in outside, thereby and builds construction slurry slurries to this region and add described in formingGu layer 300, reinforces thus the intensity that improves the soil body, thereby makes described arc turnaround section 120 bear eccentric forceThe radial thrust causing, avoids push pipe to depart to the outside of described arc turnaround section 120, affects construction quality,Can also prevent from causing construction safety accident because sediment failure destroys, guarantee the suitable of tube coupling jacking construction simultaneouslyProfit is carried out.
In addition, the material of described back-up coat 300 is cement mortar, mortar or concrete grout. Described back-up coat canWith according to flexible selection material types such as the needs of the character of construction ground soil layer and construction intensity, not only can fallLow difficulty of construction and cost, can also improve the functional reliability of described back-up coat 300. At other embodimentIn also can adopt the material of other types or character. The two ends of described back-up coat 300 are equipped with bottom inclineSection 320. Preferably the two ends of described back-up coat 300 are built into described bottom incline section 320, this has a down dipThe thickness of face section 320 trend that tapered off to two ends by centre, can save the materials'use amount of construction, reducesConstruction cost.
Above-mentioned push pipe tunnel also comprises multiple injected holes 400, multiple described injected holes 400 all with described in wait to reinforceRegion 200 is communicated with. By multiple described injected holes 400 are set, and ensure they all with described in treat reinforcing area200 connect and are communicated with, and can improve to a certain extent the speed of slip casting, thereby improve efficiency of construction, exist in additionWhen the problems such as obstruction occur certain injected hole 400, other injected hole also can ensure carrying out smoothly of construction.
As Fig. 2, shown in Fig. 3, described arc turnaround section 120 comprises 122, two sections of institutes of at least two sections of tube segmentState tube segment 122 and comprise the first tube segment 124 and the second tube segment 126, one of described the first tube segment 124End face is provided with blind mortise 123, and described the second tube segment 126 one end relative with described blind mortise 123 is provided with tenon125, described blind mortise 123 and described tenon 125 coordinate clamping.
For convenient construction, in preferred embodiment of the present invention, described arc turnaround section 120 is by leastTwo sections of tube segment 122 form, the concrete blind mortise that passes through described the first tube segment 124 and described the second tube couplingThe tenon of section 126 cooperatively interacts to splice and is assembled, and can form anti-shearing key by this assembly structure, canThe radial thrust that effectively the eccentric top of opposing power causes, thus described the first tube segment 124 and described second avoidedThere is end face faulting of slab ends in tube segment 126, affects construction quality.
Above-mentioned push pipe tunnel also comprises connection steel loop 500, and described connection steel loop 500 is set in described the first tube couplingThe joint of section 124 and described the second tube segment 126. At described the first tube segment 124 and described the second pipeThe outside of the mosaic of sections 126 is set with described connection and just encircles, and can further play reinforcement by connection, preventThere is the staggered problem separating in both.
Further, also comprise multiple strengthening mechanisms of arranging along the bearing of trend of described arc turnaround section 120600, multiple described strengthening mechanisms 600 include along the section setting of described arc turnaround section 120, also intersectConnect first anti-shearing 620 and second anti-shearing 640. Wherein, described first anti-shearing 620 and instituteState the second shear reinforcement 640 for intersecting the X-type ruggedized construction being spliced into, four ends of this X-type ruggedized constructionPortion all pushes against and contacts with the sidewall of push pipe, and this X-type ruggedized construction is along the section of described arc turnaround section 120Direction is arranged, can play a protective role to described blind mortise 123 and described tenon 125 thus, prevents bothBecause of the stressed excessive problem that produces fatigue fracture, the functional reliability and the security that improve this push pipe tunnel.Preferably, described first anti-shearing 620 and described second anti-shearing 640 for diameter be 12～20mm ruleThe spiral of lattice, when installation all with described the first tube segment 124 and described the second tube segment 126 axiallyReinforcing bar is welded to connect, and spacing 200mm is uniformly distributed vertically, has ensured enough shearing strengths and stableProperty.
Each technical characterictic of the above embodiment can combine arbitrarily, for making to describe succinctly, not rightThe all possible combination of each technical characterictic in above-described embodiment is all described, but, as long as these skillsThere is not contradiction in the combination of art feature, is all considered to be the scope that this description is recorded.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed,But can not therefore be construed as limiting the scope of the patent. It should be pointed out that for this areaThose of ordinary skill, without departing from the inventive concept of the premise, can also make some distortion and changeEnter, these all belong to protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be with appended powerProfit requires to be as the criterion.
Claims (10)
1. the construction method in push pipe tunnel, is characterized in that, comprises the steps:
S1, construction push pipe tunnel starting well;
S2, at the formation back-up coat in the arc turnaround section outside in push pipe tunnel;
S3, construction equipment are installed, and push pipe tunnel carries out jacking operation;
S4, construction push pipe tunnel received well.
2. the construction method in push pipe according to claim 1 tunnel, is characterized in that, at step S2The outside that is before also included in described arc turnaround section forms treats reinforcing area and injected hole, described injected hole withTreat that in described reinforcing area is communicated with.
3. the construction method in push pipe according to claim 1 tunnel, is characterized in that, at step S2In, the diameter of described arc turnaround section is d, described arc turnaround section comprises initiating terminal and clearing end, described in addThe extremely described arc turnaround section of front the 0～2d of the initiating terminal place of described arc turnaround section Gu the length range of layer is served as reasons0～2d place after clearing end.
4. the construction method in push pipe according to claim 1 tunnel, is characterized in that, at step S2In, the thickness range of described back-up coat is 0.5d～3d.
5. the push pipe that the construction method in the push pipe tunnel described in application rights requirement 1 to 4 any one is builtTunnel, is characterized in that, comprises push pipe body, and described push pipe body comprises arc turnaround section, described arcThe outside of turnaround section is provided with treats reinforcing area, described in treat that reinforcing area is covered with back-up coat.
6. push pipe according to claim 5 tunnel, is characterized in that, all establish at the two ends of described back-up coatThere is bottom incline section.
7. push pipe according to claim 5 tunnel, is characterized in that, the material of described back-up coat is waterMud, mortar or concrete grout.
8. push pipe according to claim 5 tunnel, is characterized in that, described arc turnaround section comprise toFew two sections of tube segment, two sections of described tube segment comprise the first tube segment and the second tube segment, described the first tube couplingOne end face of section is provided with blind mortise, and described the second tube segment one end relative with described blind mortise is provided with tenon, described inBlind mortise and described tenon coordinate clamping.
9. push pipe according to claim 8 tunnel, is characterized in that, also comprises connection steel loop, described inConnect the joint that steel ring cap is loaded on described the first tube segment and described the second tube segment.
10. push pipe according to claim 5 tunnel, is characterized in that, also comprises along described arc and turningMultiple strengthening mechanisms that the bearing of trend of curved segment is arranged, described strengthening mechanism comprises along described arc turnaround sectionAnti-shearing and second anti-shearing of section setting interconnection first.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610141808.0A CN105604555A (en) | 2016-03-11 | 2016-03-11 | Pipe-jacking tunnel and construction method of pipe-jacking tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610141808.0A CN105604555A (en) | 2016-03-11 | 2016-03-11 | Pipe-jacking tunnel and construction method of pipe-jacking tunnel |
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| CN105604555A true CN105604555A (en) | 2016-05-25 |
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| CN201610141808.0A Pending CN105604555A (en) | 2016-03-11 | 2016-03-11 | Pipe-jacking tunnel and construction method of pipe-jacking tunnel |
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Cited By (7)
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| CN106246189A (en) * | 2016-08-04 | 2016-12-21 | 广州电力设计院 | The installation method of pipe jacking tunnel tube coupling |
| CN106837344A (en) * | 2017-01-02 | 2017-06-13 | 陈建强 | A kind of constructing metro tunnel method |
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| CN110130910A (en) * | 2019-05-22 | 2019-08-16 | 重庆大学 | Earth pressure balanced shield, EPBS small curve radius tunneling shield driving method |
| CN110159291A (en) * | 2019-05-06 | 2019-08-23 | 广州电力设计院有限公司 | Method for tunnel construction and tunnel structure |
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| CN111379574A (en) * | 2020-05-06 | 2020-07-07 | 中国石油天然气集团有限公司 | Method for connecting oil-gas pipeline into shield tunnel from middle |
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| CN106837344A (en) * | 2017-01-02 | 2017-06-13 | 陈建强 | A kind of constructing metro tunnel method |
| CN109119943A (en) * | 2018-09-10 | 2019-01-01 | 国网天津市电力公司 | System of laying optimization method of the cable at push pipe both ends |
| CN110159291A (en) * | 2019-05-06 | 2019-08-23 | 广州电力设计院有限公司 | Method for tunnel construction and tunnel structure |
| CN110130910A (en) * | 2019-05-22 | 2019-08-16 | 重庆大学 | Earth pressure balanced shield, EPBS small curve radius tunneling shield driving method |
| CN111379573A (en) * | 2020-05-06 | 2020-07-07 | 中国石油天然气集团有限公司 | Connecting system for connecting shield tunnel in middle of oil and gas pipeline |
| CN111379574A (en) * | 2020-05-06 | 2020-07-07 | 中国石油天然气集团有限公司 | Method for connecting oil-gas pipeline into shield tunnel from middle |
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Application publication date: 20160525 |