CN105625446A - Construction method for railway under tunnel - Google Patents
Construction method for railway under tunnel Download PDFInfo
- Publication number
- CN105625446A CN105625446A CN201511014583.4A CN201511014583A CN105625446A CN 105625446 A CN105625446 A CN 105625446A CN 201511014583 A CN201511014583 A CN 201511014583A CN 105625446 A CN105625446 A CN 105625446A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- excavation
- sides
- railway
- construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000009412 basement excavation Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims abstract description 10
- 238000001556 precipitation Methods 0.000 claims description 16
- 230000005641 tunneling Effects 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract description 2
- 235000019994 cava Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Hydrology & Water Resources (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a construction method for a railway under a tunnel. The construction method is characterized in that dewatering deep wells are arranged; water at a water-rich drift sand layer section of an excavated tunnel is introduced into the dewatering deep wells, and is extracted out of the dewatering deep wells, so that pressure-bearing underground water in a construction area is drained, and therefore, the water level and depth in the center of a construction area are effectively controlled to achieve construction requirements under a water-free environment, phenomena of sand drifting and piping are avoided, and the stability of an excavation face is ensured. Besides, according to the method, cover plates and retaining walls are arranged at the two sides of a railway subgrade, and side slopes between the retaining walls and the railway subgrade are filled with concrete, so that cover plate sections are formed at the two sides of the railway subgrade; and tunnel extraction is divided into open excavation, cover excavation and underground excavation, so that the underground excavation length is reduced, and therefore, the construction risks are reduced.
Description
Technical field
The present invention relates to constructing tunnel side's method, particularly the method for tunnel construction of a kind of undercrossing tunnel.
Background technology
The early stage physical construction planning of China, a lot of cities railway is positioned at area, outskirts of a town, along with the propelling of urbanization and urbanization, existing railway has badly influenced the unimpeded of urban road, a large amount of planimetric position conflicts, urgent need solving urban road and Railway road change the enforcement of grade separation, improve traffic congestion situation in city. But, south China and coastal major part city be all near the mountain side water and build, geological condition is complicated, it mostly is rich water thick sand bed below existing railway line road, under the severe geologic condition of these rich water thick sand beds, builds highway, carry out tunnel buried shallowly with large-scan construction difficulty very, not only easily occur that the excavation soil body caves in, also easily have influence on the operation of existing line, it is difficult in the process that engineering carries out, ensure both Wired Security.
For avoiding tunnel on the impact of existing line, needing to keep certain spacing between the tunnel of undercrossing tunnel and railway bed, this causes the length needs in tunnel longer, and tunnel excavation length is relatively big, and long pipe shed has the possibility of impouring railway bed, and construction risk is bigger.
Summary of the invention
The present invention is intended to provide a kind of safe under the severe geologic condition of rich water thick sand bed, carries out the method for tunnel undercrossing tunnel construction, to guarantee that railway settlement Control is in allowed band, and protects the safety of railway equipment and surrounding building.
The constructional method of a kind of tunnel of the present invention undercrossing tunnel, comprises the steps:
Precipitation treatment step; Before excavation, multiple precipitation deep-well of respectively constructing in the side slope both sides on existing railway line road; The precipitation deep-well of both sides all bottom together with, extract the water in the precipitation deep-well of both sides out by water pump symmetry, it is achieved precipitation;
In the both sides of railway bed, put the Ji Keng of slope excavation cover plate and barricade by certain slope; And set anchor sprayed concrete and side slope is protected;
With concrete placement in the hole base excavated, apply out cover plate and the cover plate barricade near railway bed side; After completing, fill in Railway Bed Slope and barricade gap casting concrete;
By Tunnel Design direction, two-way tunneling, excavate the lid section of digging of the correspondence below open excavation section, cover plate and the tunneling section of centre successively, until both sides are through, complete the excavation in tunnel.
The constructional method of tunnel of the present invention undercrossing tunnel, by arranging precipitation deep-well, the moisture in husky for the rich current of tunneling layer location is incorporated in deep well, and from deep well from extraction, thus effectively achieve the moisture to excavation location, tunnel, dredge and done construction area pressure-bearing property underground water, effective control construction area central water bit depth, the requirement constructed under reaching water-less environment, avoids quicksand, piping phenomenon occur, it is ensured that the stability of excavation face. In addition, described method, also by arranging cover plate and barricade in railway bed both sides, and at the side slope place fill concrete of barricade and railway ground, it makes railway bed both sides define deck segment, during tunneling, excavates under being in deck segment bottom it, safer, simultaneously by arranging deck segment, the degree of depth of tunneling can be reduced, decrease undercrossing tunnel tunneling length, thus reduce the risk of the long pipe shed impouring railway bed that tunneling is arranged, reduce construction risk.
Enforcement mode
A constructional method for tunnel undercrossing tunnel, comprises the steps:
Precipitation treatment step; Before excavation, multiple precipitation deep-well of respectively constructing in the side slope both sides on existing railway line road; The precipitation deep-well of both sides all bottom together with, extract the water in the precipitation deep-well of both sides out by water pump symmetry, it is achieved precipitation;
In the both sides of railway bed, put the Ji Keng of slope excavation cover plate and barricade by certain slope; And set anchor sprayed concrete and side slope is protected;
With concrete placement in the hole base excavated, apply out cover plate and the cover plate barricade near railway bed side; After completing, fill in Railway Bed Slope and barricade gap casting concrete;
By Tunnel Design direction, two-way tunneling, excavate the lid section of digging of the correspondence below open excavation section, cover plate and the tunneling section of centre successively, until both sides are through, complete the excavation in tunnel.
When the base of construction cover plate and barricade is cheated, put slope excavation in railway bed both sides by the 1:0.3 gradient, set the �� 25 anchor pole injection thick concrete of 20cm and carry out side slope protection.
In order toAvoid existing line train operation load directly to be had an impact by Under-cross tunnel, wear operation line when haved project lawer is constructed under guarantee and do not interrupt normal operation, reduce to greatest extent and both wired drivings are affected, it is ensured that driving safety. Can beExisting line both sides construction artificial digging pile,?Adopt D type construction beam directly over tunnel, by arranging crossbeam, longeron, adopt and horizontal lift the vertical method chosen by existing railway supports on artificial digging pile. It can make train load finally be passed on artificial digging pile, it is ensured that the operation safety of railway when tunnel excavates.
Claims (3)
1. the constructional method of a tunnel undercrossing tunnel, it is characterised in that: comprise the steps:
Precipitation treatment step; Before excavation, multiple precipitation deep-well of respectively constructing in the side slope both sides on existing railway line road; The precipitation deep-well of both sides all bottom together with, extract the water in the precipitation deep-well of both sides out by water pump symmetry, it is achieved precipitation;
In the both sides of railway bed, put the Ji Keng of slope excavation cover plate and barricade by certain slope; And set anchor sprayed concrete and side slope is protected;
With concrete placement in the hole base excavated, apply out cover plate and the cover plate barricade near railway bed side; After completing, fill in Railway Bed Slope and barricade gap casting concrete;
By Tunnel Design direction, two-way tunneling, excavate the lid section of digging of the correspondence below open excavation section, cover plate and the tunneling section of centre successively, until both sides are through, complete the excavation in tunnel.
2. the constructional method of tunnel according to claim 1 undercrossing tunnel, it is characterised in that: when the base of construction cover plate and barricade is cheated, put slope excavation in railway bed both sides by the 1:0.3 gradient, set the �� 25 anchor pole injection thick concrete of 20cm and carry out side slope protection.
3. the constructional method of tunnel according to claim 1 undercrossing tunnel, it is characterised in that:?Existing line both sides construction artificial digging pile,?Adopt D type construction beam directly over tunnel, by arranging crossbeam, longeron, adopt and horizontal lift the vertical method chosen by existing railway supports on artificial digging pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014583.4A CN105625446B (en) | 2015-12-31 | 2015-12-31 | A kind of construction method of tunnel undercrossing tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014583.4A CN105625446B (en) | 2015-12-31 | 2015-12-31 | A kind of construction method of tunnel undercrossing tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105625446A true CN105625446A (en) | 2016-06-01 |
| CN105625446B CN105625446B (en) | 2018-02-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511014583.4A Active CN105625446B (en) | 2015-12-31 | 2015-12-31 | A kind of construction method of tunnel undercrossing tunnel |
Country Status (1)
| Country | Link |
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| CN (1) | CN105625446B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544964A (en) * | 2016-11-08 | 2017-03-29 | 中铁六局集团天津铁路建设有限公司 | Road bed and lowering water level construction method during jacking box culvert |
| CN107402043A (en) * | 2017-07-24 | 2017-11-28 | 沈阳工业大学 | Half cover and cut method Construction of City Tunnel monitoring method and monitoring system |
| CN107542470A (en) * | 2017-08-30 | 2018-01-05 | 中铁三局集团有限公司 | Existing railway Business Line construction method is worn under the shallow tunnel of karst broken region |
| CN109989767A (en) * | 2019-01-17 | 2019-07-09 | 中铁二院贵阳勘察设计研究院有限责任公司 | Reinforcement structure and construction method of long-span tunnel passing through existing railway |
| CN115306402A (en) * | 2022-08-11 | 2022-11-08 | 中铁隆工程集团有限公司 | A construction method for underpassing existing lines in subway stations |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031736A (en) * | 2010-06-12 | 2011-04-27 | 中铁十六局集团有限公司 | Construction technology for under-passing existing line under complicated geological condition |
| CN102287195A (en) * | 2011-05-13 | 2011-12-21 | 中铁四局集团第二工程有限公司 | Construction method of large-span tunnel passing through rapid transit railway with shallow tunneling process |
| CN102562077A (en) * | 2011-12-23 | 2012-07-11 | 中铁二局股份有限公司 | Excavation construction method of frame tunnel penetrating special structure at lower portion |
| CN103410522A (en) * | 2013-08-27 | 2013-11-27 | 中铁十三局集团第四工程有限公司 | Continuous close-range underpass railway bridge construction method employing shallow tunneling method |
| JP2014101661A (en) * | 2012-11-19 | 2014-06-05 | Kajima Corp | Groundwater level raising system, and groundwater level raising method |
| CN105089698A (en) * | 2014-05-13 | 2015-11-25 | 中国铁道科学研究院城市轨道交通中心 | Settlement control method in process of enabling subway tunnel to penetrate through existing railway |
-
2015
- 2015-12-31 CN CN201511014583.4A patent/CN105625446B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031736A (en) * | 2010-06-12 | 2011-04-27 | 中铁十六局集团有限公司 | Construction technology for under-passing existing line under complicated geological condition |
| CN102287195A (en) * | 2011-05-13 | 2011-12-21 | 中铁四局集团第二工程有限公司 | Construction method of large-span tunnel passing through rapid transit railway with shallow tunneling process |
| CN102562077A (en) * | 2011-12-23 | 2012-07-11 | 中铁二局股份有限公司 | Excavation construction method of frame tunnel penetrating special structure at lower portion |
| JP2014101661A (en) * | 2012-11-19 | 2014-06-05 | Kajima Corp | Groundwater level raising system, and groundwater level raising method |
| CN103410522A (en) * | 2013-08-27 | 2013-11-27 | 中铁十三局集团第四工程有限公司 | Continuous close-range underpass railway bridge construction method employing shallow tunneling method |
| CN105089698A (en) * | 2014-05-13 | 2015-11-25 | 中国铁道科学研究院城市轨道交通中心 | Settlement control method in process of enabling subway tunnel to penetrate through existing railway |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544964A (en) * | 2016-11-08 | 2017-03-29 | 中铁六局集团天津铁路建设有限公司 | Road bed and lowering water level construction method during jacking box culvert |
| CN107402043A (en) * | 2017-07-24 | 2017-11-28 | 沈阳工业大学 | Half cover and cut method Construction of City Tunnel monitoring method and monitoring system |
| CN107542470A (en) * | 2017-08-30 | 2018-01-05 | 中铁三局集团有限公司 | Existing railway Business Line construction method is worn under the shallow tunnel of karst broken region |
| CN107542470B (en) * | 2017-08-30 | 2019-09-24 | 中铁三局集团有限公司 | Existing railway Business Line construction method is worn under the shallow tunnel of karst broken region |
| CN109989767A (en) * | 2019-01-17 | 2019-07-09 | 中铁二院贵阳勘察设计研究院有限责任公司 | Reinforcement structure and construction method of long-span tunnel passing through existing railway |
| CN115306402A (en) * | 2022-08-11 | 2022-11-08 | 中铁隆工程集团有限公司 | A construction method for underpassing existing lines in subway stations |
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| Publication number | Publication date |
|---|---|
| CN105625446B (en) | 2018-02-16 |
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