CN108978679A - A kind of method that cable tunnel is constructed in high water level region - Google Patents
A kind of method that cable tunnel is constructed in high water level region Download PDFInfo
- Publication number
- CN108978679A CN108978679A CN201810726366.5A CN201810726366A CN108978679A CN 108978679 A CN108978679 A CN 108978679A CN 201810726366 A CN201810726366 A CN 201810726366A CN 108978679 A CN108978679 A CN 108978679A
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- Prior art keywords
- cable tunnel
- water level
- construction
- water
- groove
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- 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.)
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Classifications
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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
- E02D17/06—Foundation trenches ditches or narrow shafts
-
- 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
Abstract
A kind of method that cable tunnel is constructed in high water level region, belong to field of engineering building, solve the technical issues of local ponding influences construction quality and progress in the construction of high water level region, solution is the following steps are included: a, determine high water level region construction location, the height of water level for detecting water table at construction location designs the laying height of cable tunnel under a subterranean formation according to actual condition；B, it excavates: pumping conduit being installed in the groove of excavation；C, it rockfills: stone layer is backfilled in the groove of excavation；D, cable tunnel construction operation, pumping conduit persistently draws water during cable tunnel construction operation；E, pumping conduit is removed, checks cable tunnel leakage scenarios；F, backfill can load-bearing water penetration stone layer until water table water level line more than, backfill complete.Present invention construction is easy, easy to operate, can well solve high water level region conduit line construction problem, guarantees construction quality and project progress.
Description
Technical field
The invention belongs to field of engineering building, in particular to side that a kind of cable tunnel is constructed in high water level region
Method.
Background technique
Because cable duct, cable tunnel lamp are in high water level region is constructed, there are newly-built construction of structures position is lower, after excavation
Water level is higher, the case where can not constructing, and needs the operation of precipitation position.But since underground water belongs to slow infiltration type, if in construction not into
Capable processing of drawing water, easily causes local ponding, influences construction quality and progress.
Summary of the invention
In order to overcome the shortcomings of the prior art, solves cable duct, cable tunnel etc. and deposited in the construction of high water level region
Construction of structures it is lower, water level is higher after excavation, the case where can not constructing, and local ponding influences the skill of construction quality and progress
Art problem provides a kind of method that cable tunnel is constructed in high water level region.
Technical solution of the present invention and design are as follows: use and dig deep working space, be laid with the stone of good water permeability, drop
It water and builds the method that tunnel carries out simultaneously, guarantees that the water-impervious measures such as built cable tunnel are good, tape cable tunnel construction is complete
Cheng Hou, then withdraw the interim of reduction water level and use water pump.
The present invention is achieved by the following technical programs.
A kind of method that cable tunnel is constructed in high water level region, comprising the following steps:
A, it determines high water level region construction location, detects the height of water level of water table at construction location, set according to actual condition
Count the laying height of cable tunnel under a subterranean formation；
B, excavate: to groove is excavated at construction location, groove digs deep the distance between the cable tunnel bottom plate with step a design
Not less than 500mm, pumping conduit is installed in the groove of excavation；
C, it rockfills: stone layer is backfilled in the groove of excavation, until stone layer is backfilled to the cable tunnel bottom plate of step a design
At height, wherein the height of cable tunnel bottom plate is higher than the height of water level of water table；
D, cable tunnel construction operation, pumping conduit persistently draws water during cable tunnel construction operation；
E, pumping conduit is removed, the level of ground water of water table is gone up, and checks cable tunnel leakage scenarios；
F, backfill can load-bearing water penetration stone layer until water table water level line more than, backfill complete；
G, it in the top of water penetration stone layer, needs to backfill corresponding soil property according to site operation, completes cable tunnel in Gao Shui
Position region construction operation.
Further, drawing water for pumping conduit a little avoids the construction access road of cable tunnel in the step b, and drinking-water pipe
The end in road is placed in the point for excavating that topography is minimum in groove.
Compared with prior art the invention has the benefit that
Present invention construction is easy, easy to operate, can well solve high water level region conduit line construction problem, guarantees construction
Quality and project progress.
Detailed description of the invention
Fig. 1 is step a status diagram of the present invention, and dotted line is the position of the cable tunnel designed according to actual condition in figure
It sets.
Fig. 2 is step b status diagram of the present invention.
Fig. 3 is step c status diagram of the present invention.
Fig. 4 is step d status diagram of the present invention.
Fig. 5 is step e status diagram of the present invention.
Fig. 6 is step f status diagram of the present invention.
In figure, 1 is stratum, and 2 be water table, and 3 be groove, and 4 be pumping conduit, and 5 be stone layer, and 6 be cable tunnel, 7
For water penetration stone layer.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
The method that a kind of cable tunnel as shown in Figures 1 to 6 is constructed in high water level region, comprising the following steps:
A, it determines high water level region construction location, detects the height of water level of water table 2 at construction location, set according to actual condition
Count laying height of the cable tunnel 6 under stratum 1；
B, it excavates: to excavation groove 3 at construction location, between 6 bottom plate of cable tunnel that the digging depth and step a of groove 3 design
Distance is not less than 500mm, and pumping conduit 4 is installed in the groove 3 of excavation；
C, it rockfills: stone layer 5 is backfilled in the groove 3 of excavation, until stone layer 5 is backfilled to the cable tunnel 6 of step a design
Floor level, wherein the height of 6 bottom plate of cable tunnel is higher than the height of water level of water table 2；
D, 6 construction operation of cable tunnel, pumping conduit 4 persistently draws water during 6 construction operation of cable tunnel；
E, pumping conduit 4 is removed, the level of ground water of water table 2 is gone up, and checks 6 leakage scenarios of cable tunnel；
F, backfill can load-bearing water penetration stone layer 7 until water table 2 water level line more than, backfill complete；
G, in the top of water penetration stone layer 7, according to site operation needs, (road surfacing pitch or Pavement Design are greening
Band etc.) the corresponding soil property of backfill, cable tunnel is completed in high water level region construction operation.What the water penetration stone layer 7 used
Stone is the railway ballast stone that track is paved the way with 16-63mm, thickness >=300mm of water penetration stone layer 7.
Further, drawing water for pumping conduit 4 a little avoids the construction access road of cable tunnel 6 in the step b, and draws water
The end of pipeline 4 is placed in the point for excavating that topography is minimum in groove 3.
In the raw material plant on-site cable tunnel 110kV to be laid in the present embodiment, whole path is arranged by north orientation south, part
Existing road is occupied, partially in greenbelt (shrub).The height distance ground of level of ground water is found only when excavating groove 3
800mm, and clear height 2100mm, top plate thickness 200mm in the cable tunnel 6 designed, need arrangement of reinforcement, tunnel outer top panel is apart from ground
500mm is constructed using common laying method, and groundwater mining is time-consuming and laborious, and cable tunnel is laid with cost and virtually improves；Electricity
Clear span 1500mm in cable tunnel 6, sidewall thickness 200mm need arrangement of reinforcement, tunnel floor thickness 150mm, 6 bottom cushion of cable tunnel
300mm.The depth 3500mm of groove 3, the wide 2500mm in bottom, two sides punching block slab supporting, the gradient≤75 ° of groove 3.
It is constructed using method provided by the invention, in work progress, using deep working space is dug, is laid with good water permeability
Stone, precipitation and build the method that tunnel carries out simultaneously, carry out cable tunnel water-impervious measure, tape cable tunnel construction is completed
Afterwards, then withdraw the interim construction method with water pump for reducing water level, construction finishes, tunnel two sides stone layer height water level line with
On, finally restore original road and greening.Operational effect is good after implementation.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
It is familiar with those skilled in the art in the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (2)
1. a kind of method that cable tunnel is constructed in high water level region, it is characterised in that the following steps are included:
A, it determines high water level region construction location, the height of water level of water table (2) at construction location is detected, according to actual condition
Design the laying height of cable tunnel (6) under stratum (1)；
B, it excavates: excavating groove (3) at construction location, deep cable tunnel (6) bottom plate with step a design of the digging of groove (3)
The distance between be not less than 500mm, excavation groove (3) in install pumping conduit (4)；
C, it rockfills: stone layer (5) is backfilled in the groove (3) into excavation, until stone layer (5) are backfilled to the electricity of step a design
Cable tunnel (6) floor level, wherein the height of cable tunnel (6) bottom plate is higher than the height of water level of water table (2)；
D, cable tunnel (6) construction operation, pumping conduit (4) persistently draws water during cable tunnel (6) construction operation；
E, it removes pumping conduit (4), the level of ground water of water table (2) is gone up, and checks cable tunnel (6) leakage scenarios；
F, backfill can load-bearing water penetration stone layer (7) until water table (2) water level line more than, backfill complete；
G, it in the top of water penetration stone layer (7), needs to backfill corresponding soil property according to site operation, completes cable tunnel in height
Water level region construction operation.
2. the method that a kind of cable tunnel according to claim 1 is constructed in high water level region, it is characterised in that: the step
Drawing water for pumping conduit (4) a little avoids the construction access road of cable tunnel (6) in rapid b, and the end of pumping conduit (4) is placed in
Excavate the minimum point of groove (3) interior topography.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810726366.5A CN108978679A (en) | 2018-07-04 | 2018-07-04 | A kind of method that cable tunnel is constructed in high water level region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810726366.5A CN108978679A (en) | 2018-07-04 | 2018-07-04 | A kind of method that cable tunnel is constructed in high water level region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108978679A true CN108978679A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810726366.5A Pending CN108978679A (en) | 2018-07-04 | 2018-07-04 | A kind of method that cable tunnel is constructed in high water level region |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886305A (en) * | 2019-11-08 | 2020-03-17 | 济南轨道交通集团有限公司 | Foundation pit water burst layered backfilling and plugging method based on protection karst water channel |
| CN110886308A (en) * | 2019-11-08 | 2020-03-17 | 济南轨道交通集团有限公司 | Rapid frozen groundwater plugging method based on protection karst water channel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0465932B2 (en) * | 1987-11-06 | 1992-10-21 | Toa Harbor Works Co Ltd | |
| CN201770986U (en) * | 2010-08-06 | 2011-03-23 | 云南白药集团股份有限公司 | Structure for embedding outdoor process pipeline |
| CN103821525A (en) * | 2014-03-10 | 2014-05-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid construction method in high water level geological condition |
| CN107587557A (en) * | 2017-09-27 | 2018-01-16 | 广东景源建设工程有限公司 | Outdoor water engineering construction method |
| CN108149698A (en) * | 2016-12-06 | 2018-06-12 | 吴方华 | Guiding solid drainage and construction method and system inside a kind of airport high fill foundation |
-
2018
- 2018-07-04 CN CN201810726366.5A patent/CN108978679A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0465932B2 (en) * | 1987-11-06 | 1992-10-21 | Toa Harbor Works Co Ltd | |
| CN201770986U (en) * | 2010-08-06 | 2011-03-23 | 云南白药集团股份有限公司 | Structure for embedding outdoor process pipeline |
| CN103821525A (en) * | 2014-03-10 | 2014-05-28 | 山西太钢不锈钢股份有限公司 | Cable tunnel rapid construction method in high water level geological condition |
| CN108149698A (en) * | 2016-12-06 | 2018-06-12 | 吴方华 | Guiding solid drainage and construction method and system inside a kind of airport high fill foundation |
| CN107587557A (en) * | 2017-09-27 | 2018-01-16 | 广东景源建设工程有限公司 | Outdoor water engineering construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886305A (en) * | 2019-11-08 | 2020-03-17 | 济南轨道交通集团有限公司 | Foundation pit water burst layered backfilling and plugging method based on protection karst water channel |
| CN110886308A (en) * | 2019-11-08 | 2020-03-17 | 济南轨道交通集团有限公司 | Rapid frozen groundwater plugging method based on protection karst water channel |
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Application publication date: 20181211 |
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