CN106050245A - Supporting structure for zero distance underneath pass of existing station of rectangular tunnel section and construction method - Google Patents
Supporting structure for zero distance underneath pass of existing station of rectangular tunnel section and construction method Download PDFInfo
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- CN106050245A CN106050245A CN201610627661.6A CN201610627661A CN106050245A CN 106050245 A CN106050245 A CN 106050245A CN 201610627661 A CN201610627661 A CN 201610627661A CN 106050245 A CN106050245 A CN 106050245A
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 230000008093 supporting effect Effects 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 239000002689 soil Substances 0.000 claims abstract description 23
- 238000009412 basement excavation Methods 0.000 claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000007569 slipcasting Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 230000005641 tunneling Effects 0.000 claims description 4
- 230000002411 adverse Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- -1 sulfur Aluminate Chemical class 0.000 description 1
Classifications
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- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
-
- 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)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a supporting structure for zero distance underneath pass of an existing station of a rectangular tunnel section and a construction method. Settlement deformation of underneath pass of the existing station of a newly-built line is large. Before a tunnel is dug, deep hole grouting reinforcing bodies are constructed on the tunnel face of the tunnel, the method of ring-excavation with the core soil reserved is adopted to symmetrically dig upper guide holes and lower guide holes on the inner side and the outer side of a left line and a right line, a preliminary support is constructed in time, jacks are longitudinally arranged below the existing station, and a side wall vertical profile steel frame is erected. Through the synergistic effect of the steel frame + H steel + the hydraulic jacks + reinforcing rob plates +grouting materials and the like, a hydraulic synchronous control jack-up technique is adopted in combination with other auxiliary measures, the multiple large-tonnage jacks which are mounted on a newly-built preliminary supporting structure in advance form group jacking and supporting to provide reaction force compensation for an existing subway structure, a rigid and adjustable joint supporting system is formed, an upper existing station structure is supported, and the purpose of effectively controlling deformation of the existing station structure is achieved.
Description
Technical field
The present invention relates to Tunnel Engineering technical field, be specifically related under a kind of Rectangular Tunnel section zero distance wear building up station
Supporting construction and construction method.
Background technology
Along with the Large scale construction of urban rail transit in China, Urban Underground sky asks that utilization rate is being stepped up, newly-built line
Road is worn the situation of existing line and is got more and more under needing.The mode of passing through have on wear, under wear and wear three kinds with side, wear down existing subway
Wearing existing subway station engineering difficulty under line project, particularly bored tunnel maximum, risk is the highest.Wear at subway tunnel
More in building up station work progress, the country rock soil body can be produced disturbance and cause stratum deformation, when deformation reaches to a certain degree
The operation security of existing subway station will be had influence on.Meanwhile, constructing metro tunnel advance reinforcement controlling measurement the most at that time, Ke Nengyin
Play sedimentation or the protuberance of existing subway station, even produce damaging influence, time serious, also will have influence on the life of related personnel
Property safety, especially in business district, city, if there is such issues that, will produce very severe social influence.
Wearing the traditional method for designing of building up station under general newly-built circuit is reservation 2m between new tunnel and existing structure
~the interlayer soil of 3m, by slip casting (steel tube shed, ductule or deep hole grouting) or the method such as freeze and reinforce interlayer soil in advance, to subtract
The sedimentation and deformation of building up station base plate during Pollen sterility excavation.Practice finds that the deformation that above-mentioned engineering method produces is the biggest, and upper strata
Even if structure once produces and also is difficult to recover after sedimentation and deformation passes through again grouting and reinforcing, subway engineering development cannot be met
Need.
Summary of the invention
It is an object of the invention to provide supporting construction and the structure wearing building up station under a kind of Rectangular Tunnel section zero distance
Method, is formed top building up station structure and supports, reach effectively to control the purpose of building up station malformation.
The technical solution adopted in the present invention is:
The supporting construction of building up station is worn under Rectangular Tunnel section zero distance, it is characterised in that:
Being Rectangular Tunnel below building up station, be provided with preliminary bracing in Rectangular Tunnel, preliminary bracing includes along direction, tunnel equal
The steelframe of the rectangle hoop of even distribution;
The building up station bottom cushion of building up station is close at preliminary bracing top;
Preliminary bracing arranges a Pin H steel every three Pin steelframes, and H steel is internal arranges H steel the most arranged in a crossed manner, top H steel with
It is provided with jack between other H steel tops below the H steel of top.
It is provided with top steel plate between jack top and H steel, bottom jack and between H steel, is provided with end steel plate, very heavy
Top/bottom part is outer is provided with the vertical foot steel plate being fixed on the end steel plate collarette week.
H steel is provided with floor of putting more energy into, and is positioned at the position of corresponding jack.
The construction method of the supporting construction of building up station is worn under Rectangular Tunnel section zero distance, it is characterised in that:
Comprise the following steps:
Step one: stratum pre-reinforcement:
Before tunnel excavation, at tunnel tunnel face, perform deep hole grouting reinforcing body, form effective water-stop curtain, eliminate diving and
The artesian aquifer adverse effect to tunneling operation;Slip casting from bottom to top, is longitudinally carried out at twice, overlaps 2-3 m;After reinforcing, open
Digging face soil body unconfined compressive strength and reach 0.5MPa, periphery soil stabilization district reaches 1.0Mpa;
Step 2: the upper and lower pilot drive in outside:
Use the upper and lower pilot tunnel in outside in the line of Ring Cutting provided core soil method symmetry excavation left and right, perform preliminary bracing in time, open
Being drawn by the soil body under preliminary bracing bottom surface when digging and remove, preliminary bracing end face is closely connected with building up station bottom cushion;Preliminary bracing bag
Including the steelframe along direction, tunnel equally distributed rectangle hoop, arrange a Pin H steel every three Pin steelframes, H steel is internal to be arranged anyhow
H steel arranged in a crossed manner, installs jack between other H steel tops below top H steel and top H steel, jack is in place
After, in time to jack pre-add top power 30t, by 5t hierarchical loading;After pilot tunnel is through, interim end-blocking, sets along sidewall in pilot tunnel
The grouting and reinforcing district soil body is carried out supplementing slip casting by conduit;
Step 3: pour outside side wall and part is pushed up, base plate:
Retreating from interior and pour side wall and part top, base arrangement outward, hoop divides 2 constructions, longitudinally every section of 4-6m, temporarily
Inverted arch dismounting pours corresponding with side wall, and every section of 6-8m tears one section open and pours one section, after two lining concrete reach intensity, and form removal,
And set up temporary steel support;
Step 4: the upper and lower pilot drive in inner side:
Left and right line symmetry is carried out, and with upper and lower pilot tunnel inside the line of step 2 excavation left and right and blocks temporarily;Base area iron construction sedimentation
Monitoring situation, adjusts jack 4 in real time and pushes up power;
Step 5: side wall and remainder top, base plate inside pouring:
From interior outward, retreat with step 3 and pour side wall and part top, base arrangement, and set up temporary steel support;
Step 6: remove temporary support, under wear existing line segment and constructed.
The invention have the advantages that
1, the present invention follows the principle of newly built tunnels and existing structure rigid contact, and construction uses partial excavation, portion of portion cyclization to arrange
Executing, support top uses active roof-propping, hierarchical loading, dynamic regulating measures.
2, the supporting structure system of the present invention is by supportings such as steelframe+H steel+hydraulic jack+floor of putting more energy into+grouting and reinforcing bodies
Measure coordinate acts on jointly, forms rigidity, adjustable Composite Supporting System, forms top building up station structure and supports, can have
Effect controls the deformation of building up station structure, it is ensured that its operation security.
3, Rectangular Tunnel structure roof and building up station base plate rigidity closing contact, it is to avoid clamp between new, old structure
Soil layer need to be taked pipe curtain and extend out the measures such as slip casting in advance, reduces and puts into, has economy, efficient advantage.
Accompanying drawing explanation
Fig. 1 is the vertical section schematic diagram of the present invention.
Fig. 2 is the schematic cross section of the present invention.
Fig. 3 is C node drawing (jack) of the present invention.
Fig. 4 is the A-A profile of the present invention.
Fig. 5 is the B-B profile of the present invention.
In figure, 1-building up station, 2-H steel, 3-steelframe, 4-jack, 5-Core Soil, 6-grouting and reinforcing body, the 7-initial stage props up
Protecting, 8-puts more energy into floor, and 9-pushes up steel plate, 10-foot steel plate, steel plate at the bottom of 11-, 12-building up station bottom cushion.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
The present invention relates to wear under Rectangular Tunnel section zero distance the supporting construction of building up station, excavate at Tunneling by mining method
Before, at tunnel tunnel face, perform deep hole grouting reinforcing body 6, in using Ring Cutting provided core soil method symmetry excavation left and right line
The upper and lower pilot tunnel in outside, performs preliminary bracing 7 in time, longitudinally arranges 1 Pin every 3 Pin grid steel frames very heavy below building up station 1
Top 4+ profile steel frame 3, left and right line each mileage section respectively sets 3 100 t hydraulic self-locking jack 4.First set up during excavation
The vertical profile steel frame of side wall 3, is welded to connect muscle;Installing top profile steel frame 3 again, jack 4 should be installed in profile steel frame 3 in advance
The fixed position stayed, the installation method at its position that is connected with profile steel frame 3 is as shown in Fig. 4.By steelframe 3+H steel 2+ hydraulic pressure thousand
Jin top 4+ puts more energy into floor 8+ grouting and reinforcing body 6 synergism such as grade, forms rigidity, adjustable Composite Supporting System, existing to top
Station structure is formed and supports.Wherein, grouting and reinforcing body 6 is ordinary cement-waterglass dual slurry, and periphery soil stabilization district uses sulfur
Aluminate cement.
Concrete structure is:
It is Rectangular Tunnel below building up station 1, in Rectangular Tunnel, is provided with preliminary bracing 7.Preliminary bracing 7 includes along direction, tunnel
The steelframe 3 of equally distributed rectangle hoop;The building up station bottom cushion 12 of building up station 1 is close at preliminary bracing 7 top;Initial stage
Supporting 7 arranges a Pin H steel 2 every three Pin steelframes 3, and H steel 2 is internal arranges H steel 2 the most arranged in a crossed manner, top H steel 2 and top
It is provided with jack 4 between other H steel 2 tops below portion's H steel 2.Left and right line each mileage section respectively sets 3 100 t liquid
Pressure self-locking jack 4.
It is provided with top steel plate 9 between jack 4 top and H steel 2, bottom jack 4 and between H steel 2, is provided with end steel plate
11, jack 4 bottom periphery ring week is provided with the vertical foot steel plate 10 being fixed on end steel plate 11.H steel 2 is provided with ribbed stiffener
Plate, is positioned at the position of corresponding jack 4.
Wear the construction method of the supporting construction of building up station under above-mentioned Rectangular Tunnel section zero distance, comprise the following steps:
Step one: stratum pre-reinforcement:
Before tunnel excavation, at tunnel tunnel face, perform deep hole grouting reinforcing body 6, form effective water-stop curtain, eliminate diving
And the adverse effect that artesian aquifer is to tunneling operation;Slip casting from bottom to top, is longitudinally carried out at twice, overlaps 2-3 m;After reinforcing,
Excavation face soil body unconfined compressive strength reaches 0.5MPa, and periphery soil stabilization district reaches 1.0Mpa;
Step 2: the upper and lower pilot drive in outside:
Use the upper and lower pilot tunnel in outside in the line of Ring Cutting provided core soil method symmetry excavation left and right, perform preliminary bracing 7 in time,
Being drawn by the soil body under preliminary bracing 7 bottom surface during excavation and remove, preliminary bracing 7 end face is closely connected with building up station bottom cushion 12;Initial stage
Supporting 7 includes the steelframe 3 along direction, tunnel equally distributed rectangle hoop, arranges a Pin H steel 2 every three Pin steelframes 3, in H steel 2
Portion arranges H steel 2 the most arranged in a crossed manner, installs very heavy between other H steel 2 tops below top H steel 2 and top H steel 2
Top 4, after jack 4 is in place, in time to jack pre-add top power 30t, by 5t hierarchical loading;Interim end-blocking after pilot tunnel is through,
Set conduit along sidewall in pilot tunnel to carry out the grouting and reinforcing district soil body supplementing slip casting;
Step 3: pour outside side wall and part is pushed up, base plate:
Retreating from interior and pour side wall and part top, base arrangement outward, hoop divides 2 constructions, longitudinally every section of 4-6m, temporarily
Inverted arch dismounting pours corresponding with side wall, and every section of 6-8m tears one section open and pours one section, after two lining concrete reach intensity, and form removal,
And set up temporary steel support (400x5 steel pipe@3m);
Step 4: the upper and lower pilot drive in inner side:
Left and right line symmetry is carried out, and with upper and lower pilot tunnel inside the line of step 2 excavation left and right and blocks temporarily;Base area iron construction sedimentation
Monitoring situation, adjusts jack 4 in real time and pushes up power;
Step 5: side wall and remainder top, base plate inside pouring:
From interior outward, retreat with step 3 and pour side wall and part top, base arrangement, and set up temporary steel support (400x5
Steel pipe@3m);
Step 6: remove temporary support, under wear existing line segment and constructed.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And the conversion of any equivalence that technical solution of the present invention is taked, the claim being the present invention is contained.
Claims (4)
1. under Rectangular Tunnel section zero distance, wear the supporting construction of building up station, it is characterised in that:
Building up station (1) lower section is Rectangular Tunnel, is provided with preliminary bracing (7) in Rectangular Tunnel, and preliminary bracing (7) includes along tunnel
The steelframe (3) of direction, road equally distributed rectangle hoop;
The building up station bottom cushion (12) of building up station (1) is close at preliminary bracing (7) top;
Preliminary bracing (7) arranges Pin H steel (2) every three Pin steelframes (3), and H steel (2) is internal arranges H the most arranged in a crossed manner
Steel (2), is provided with jack (4) between other H steel (2) tops of top H steel (2) and lower section, top H steel (2).
The supporting construction of building up station is worn under Rectangular Tunnel section zero distance the most according to claim 1, it is characterised in that:
It is provided with top steel plate (9) between jack (4) top and H steel (2), is provided with between jack (4) bottom and H steel (2)
End steel plate (11), is provided with the vertical foot steel plate (10) being fixed on end steel plate (11) jack (4) bottom periphery ring week.
The supporting construction of building up station is worn under Rectangular Tunnel section zero distance the most according to claim 1, it is characterised in that:
H steel (2) is provided with floor of putting more energy into, and is positioned at the position of corresponding jack (4).
4. under Rectangular Tunnel section zero distance, wear the construction method of the supporting construction of building up station, it is characterised in that:
Comprise the following steps:
Step one: stratum pre-reinforcement:
Before tunnel excavation, at tunnel tunnel face, perform deep hole grouting reinforcing body (6), form effective water-stop curtain, eliminate latent
Water and the artesian aquifer adverse effect to tunneling operation;Slip casting from bottom to top, is longitudinally carried out at twice, overlaps 2-3 m;Reinforce
After, excavation face soil body unconfined compressive strength reaches 0.5MPa, and periphery soil stabilization district reaches 1.0Mpa;
Step 2: the upper and lower pilot drive in outside:
Use the upper and lower pilot tunnel in outside in the line of Ring Cutting provided core soil method symmetry excavation left and right, perform preliminary bracing in time
(7), during excavation, the soil body under preliminary bracing (7) bottom surface is drawn and remove, preliminary bracing (7) end face and building up station bottom cushion (12)
Closely connected;Preliminary bracing (7) includes the steelframe (3) along direction, tunnel equally distributed rectangle hoop, arranges every three Pin steelframes (3)
One Pin H steel (2), H steel (2) is internal arranges H steel (2) the most arranged in a crossed manner, in top H steel (2) and lower section, top H steel (2)
Other H steel (2) tops between install jack (4), after jack (4) is in place, in time to jack pre-add top power 30t, press
5t hierarchical loading;After pilot tunnel is through, interim end-blocking, sets conduit along sidewall in pilot tunnel and supplements the grouting and reinforcing district soil body
Slip casting;
Step 3: pour outside side wall and part is pushed up, base plate:
Retreating from interior and pour side wall and part top, base arrangement outward, hoop divides 2 constructions, longitudinally every section of 4-6m, temporarily
Inverted arch dismounting pours corresponding with side wall, and every section of 6-8m tears one section open and pours one section, after two lining concrete reach intensity, and form removal,
And set up temporary steel support;
Step 4: the upper and lower pilot drive in inner side:
Left and right line symmetry is carried out, and with upper and lower pilot tunnel inside the line of step 2 excavation left and right and blocks temporarily;Base area iron construction sedimentation
Monitoring situation, adjusts jack 4 in real time and pushes up power;
Step 5: side wall and remainder top, base plate inside pouring:
From interior outward, retreat with step 3 and pour side wall and part top, base arrangement, and set up temporary steel support;
Step 6: remove temporary support, under wear existing line segment and constructed.
Priority Applications (1)
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CN201610627661.6A CN106050245A (en) | 2016-08-03 | 2016-08-03 | Supporting structure for zero distance underneath pass of existing station of rectangular tunnel section and construction method |
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CN201610627661.6A CN106050245A (en) | 2016-08-03 | 2016-08-03 | Supporting structure for zero distance underneath pass of existing station of rectangular tunnel section and construction method |
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Cited By (17)
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CN105909265A (en) * | 2016-06-12 | 2016-08-31 | 中铁十九局集团轨道交通工程有限公司 | Heaving-prevention retrusive deep-hole grouting system and method for passing through existing shield tunnel |
CN106988750A (en) * | 2017-05-26 | 2017-07-28 | 中铁四局集团第三建设有限公司 | The embodiment at existing station is worn under a kind of large span running tunnel super close distance |
CN107313744A (en) * | 2017-07-18 | 2017-11-03 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of small guide hole grouting and reinforcing coal bed gas well passes through the construction method in goaf |
CN107654234A (en) * | 2017-07-24 | 2018-02-02 | 广州地铁设计研究院有限公司 | A kind of construction method of subway tunnel crossing subway station diaphram wall |
CN108798681A (en) * | 2018-06-15 | 2018-11-13 | 中铁第勘察设计院集团有限公司 | What middle hole method zero distance passed through existing subway station underpins system and its construction method |
CN108952771A (en) * | 2017-05-27 | 2018-12-07 | 中铁建大桥工程局集团第三工程有限公司 | Existing rigid structures zero are worn under one kind deforms construction method |
CN110005442A (en) * | 2019-04-26 | 2019-07-12 | 中铁二十三局集团第六工程有限公司 | Under wear existing building Urban Underground mining sectbn surrounding rock consolidation technique |
CN110630284A (en) * | 2019-09-28 | 2019-12-31 | 广州地铁设计研究院股份有限公司 | Settlement active control structure and method for construction of closely-adhered underpass existing subway station |
CN110777850A (en) * | 2019-11-29 | 2020-02-11 | 浙江交工集团股份有限公司 | Existing pipe gallery underground space, supporting structure thereof and construction method of supporting structure |
CN110939154A (en) * | 2019-12-11 | 2020-03-31 | 中铁第四勘察设计院集团有限公司 | Node structure of crossing station on pipe gallery and construction method |
CN111270615A (en) * | 2020-03-11 | 2020-06-12 | 中国建筑第八工程局有限公司 | Tunnel widening structure at bridge-tunnel connection part and bridge construction method |
CN112943310A (en) * | 2021-02-07 | 2021-06-11 | 中交一公局集团有限公司 | Construction method for cross spanning section of upper-layer tunnel and lower-layer tunnel |
CN113217021A (en) * | 2021-04-30 | 2021-08-06 | 中铁十六局集团有限公司 | Underground space close-range disturbance construction method and equipment |
CN113585285A (en) * | 2021-08-24 | 2021-11-02 | 中国地质大学(武汉) | Device for eliminating influence of lattice column on axial force of support beam and mounting method |
CN113914901A (en) * | 2021-11-11 | 2022-01-11 | 中国铁建大桥工程局集团有限公司 | Tunnel supporting structure |
CN115095353A (en) * | 2022-07-08 | 2022-09-23 | 山东建筑大学 | Sedimentation control design method for jacking existing structure by grouting |
CN115467367A (en) * | 2022-08-17 | 2022-12-13 | 湖北工业大学 | Construction method for actively compensating deformation of underpass operation tunnel in upper-layer engineering construction |
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CN102352756A (en) * | 2011-07-28 | 2012-02-15 | 中铁二十二局集团第六工程有限公司 | Door arc steel frame reinforcing system |
CN203702164U (en) * | 2013-11-04 | 2014-07-09 | 北京城建设计发展集团股份有限公司 | Subsurface excavation tunnel top bracing device adopting lifting jacks for movable support |
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