CN106703881A - Pressure-reduction water-draining system for high-speed-railway-single-track-tunnel substrate - Google Patents

Pressure-reduction water-draining system for high-speed-railway-single-track-tunnel substrate Download PDF

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Publication number
CN106703881A
CN106703881A CN201611090811.0A CN201611090811A CN106703881A CN 106703881 A CN106703881 A CN 106703881A CN 201611090811 A CN201611090811 A CN 201611090811A CN 106703881 A CN106703881 A CN 106703881A
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CN
China
Prior art keywords
water
draining
substrate
tunnel
pressure
Prior art date
Application number
CN201611090811.0A
Other languages
Chinese (zh)
Inventor
张金柱
张俊儒
崔耀
李建军
Original Assignee
中铁十二局集团有限公司
西南交通大学
Priority date (The priority date 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 date listed.)
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Application filed by 中铁十二局集团有限公司, 西南交通大学 filed Critical 中铁十二局集团有限公司
Priority to CN201611090811.0A priority Critical patent/CN106703881A/en
Publication of CN106703881A publication Critical patent/CN106703881A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00Drainage
    • E21F16/02Drainage of tunnels

Abstract

The invention discloses a pressure-reduction water-draining system for a high-speed-railway-single-track-tunnel substrate. Water seepage wells are prearranged on a tunnel inverted substrate, water-draining lateral ditches are arranged on the two sides of the tunnel road surface, and water draining conduits extending into the water seepage wells downwards are arranged on the side walls of the water-draining lateral ditches; a plurality of water seepage holes are formed in the conduit walls at the lower ends of the water draining conduits; the lower ends of the water draining conduits are wrapped with water permeable geotextile; the water seepage wells are filled with macadam. By means of the pressure-reduction water-draining system, water can be collected in the water seepage wells, and draining of underground water can be further achieved; the ends, extending into the water seepage wells, of the water draining conduits are wrapped with the water permeable geotextile, it is avoided that water seepage pipes are plugged accordingly, it is guaranteed that substrate water is successfully drained, the water pressure of the substrate is reduced, and engineering hidden danger is further reduced.

Description

A kind of high-speed railway single-track tunnel substrate decompression drainage system
Technical field
The present invention relates to tunnels and underground engineering technical field, specially a kind of high-speed railway single-track tunnel substrate decompression row Water system.
Background technology
The guarded drainage technology in tunnel, is exactly always the important step during Tunnel Design, and Tunnel Design is to underground water Treatment will have influence on stress, influence degree of ecological environment of structure etc..For building the Railway Tunnel in region of FuShui, Because substrate is acted on by groundwater pressure, cause inverted arch under effect of water pressure, produce inverted arch lifting, the disease of craze and transfiguration Evil, so that high speed railway track deforms, causes guideway irregularity, and serious potential safety hazard is left to later stage operation, makes Into life and property loss.
To prevent because groundwater pressure is excessive, and cause tunnel inverted arch to bear excessive active force, cause inverted arch to swell Deformation, destroys the ride comfort of high-speed railway circuit, has some scholars to be studied it, it is proposed that some working measures, but just For current high-speed railway substrate decompression drainage system, there is not the reliable method of system.As Wang Yuan exists clearly《Rich water tunnel subregion Decompression guarded drainage technical research》Proposed in one text, pvc pipe and substrate UNICOM be installed in advance in centre drain bottom, to When water pressure increases, underground water can be discharged into centre drain along conduit, be feasible on this theoretical method, but actually should During, pvc pipe is susceptible to plugging phenomenon, simultaneously because single-track tunnel is not provided with centre drain, is difficult to realize draining Effect.For another example some German mountain tunnels due to buried depth less, using full plugging structure, but head it is higher when use in inverted arch The method in gutter arranged below reduces waterpower, outside substrate underground water effectively can be discharged tunnel by the method, reduces Base pressure, but the method needs apply gutter inside and outside tunnel-liner, and quantities is larger.
The content of the invention
Regarding to the issue above it is an object of the invention to propose a kind of high-speed railway single-track tunnel substrate decompression drainage system, The system can successfully collect underground water, while smoothly can also arrange to tunnel drainage lateral sulcus substrate underground water, and then Reduce water pressure at the bottom of the foundation, prevent inverted arch from swelling deformation, reduce the hidden dangers in project during the operation of high-speed railway later stage.Technical scheme It is as follows:
A kind of high-speed railway single-track tunnel substrate decompression drainage system, tunnel inverted arch substrate is preset with filter well, tunnel road surface two Side is provided with draining lateral sulcus, and draining lateral sulcus side wall is provided with the drainage duct for extending down into filter well.
Further, drainage duct lower end tube wall is provided with multiple water seepage holes.
Further, the drainage duct lower end is enclosed with permeable geotextiles.
Further, rubble is filled with the filter well.
The beneficial effects of the invention are as follows:It is to be provided with substrate that the present invention relatively has substrate decompression drainage system innovation Filter well, water is come together among filter well, and then be conducive to the discharge of underground water;And the rich water situation according to stratum, can Reasonably to arrange the quantity of filter well, make design more reasonable, effective, and then reduce quantities, shorten the duration;Simultaneously in row Water conduit stretches into filter well end permeable geotextiles parcel termination, so as to avoid the blockage that seeps water, it is ensured that the smooth row of sole Remove, reduce water pressure at the bottom of the foundation, and then reduce hidden dangers in project.
Brief description of the drawings
Fig. 1 is the structural representation of high-speed railway single-track tunnel substrate decompression drainage system of the present invention.
Fig. 2 is high-speed railway single-track tunnel substrate of the present invention decompression drainage system vertical view cutaway drawing.
Fig. 3 is high-speed railway single-track tunnel substrate of the present invention decompression drainage system side sectional view.
Fig. 4 is drainage duct structural representation of the present invention.
In figure:1- draining lateral sulcus;2- filter wells;3- drainage ducts;31- water seepage holes;4- rubbles;The permeable geotextiles of 5-;6- Cable trough;7- preliminary bracings;8- secondary linings.
Specific embodiment
The present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings.As shown in figure 1, a kind of high-speed iron Road single-track tunnel substrate decompression drainage system, tunnel inverted arch substrate is preset with filter well 2, and tunnel road surface both sides are provided with draining lateral sulcus 1, the side wall of draining lateral sulcus 1 is provided with the drainage duct 3 for extending down into filter well 2.
After inverted arch excavates completion, below draining lateral sulcus, tunnel central side suitable distance, rectangular cross section infiltration is excavated Well, cross dimensions for it is long × wide=(60cm~80cm)×(60cm~80cm), infiltration well depth is with close tunnel central side borehole wall depth Degree is reference, is advisable with 80cm, depending on other borehole wall depth are with tunnel inverted arch profile.
The lower end tube wall of drainage duct 3 of the present embodiment is provided with multiple water seepage holes 31.Drainage duct is managed using Φ 100PVC, Its embedment infiltration well section arranges water seepage hole 31 according to blossom type, and pitch of holes is advisable with 5 ~ 10cm, as shown in Figure 4.
The lower end of drainage duct 3 of the present embodiment is enclosed with permeable geotextiles 5.Drainage duct 3 stretches into infiltration well section using saturating Water geotextiles colligation, can avoid the hole plug that seeps water, it is ensured that the smooth exclusion of sole;The drainage duct other end is below cover plate Draining lateral sulcus is introduced the water at 5cm.
As shown in Fig. 2 drainage duct is longitudinally arranged along tunnel, spacing is advisable with 25 ~ 30cm;Filter well spacing is according to tunnel Country rock rich water situation is advisable with 15m ~ 20m.
Rubble 4 is filled with the filter well 2 of the present embodiment.As shown in figure 3, fixed drainage duct, will use in filter well Block stone is filled, it is ensured that the water penetration in filter well.

Claims (4)

1. a kind of high-speed railway single-track tunnel substrate decompression drainage system, it is characterised in that tunnel inverted arch substrate is preset with infiltration Well(2), tunnel road surface both sides are provided with draining lateral sulcus(1), draining lateral sulcus(1)Side wall is provided with and extends down into filter well(2)'s Drainage duct(3).
2. high-speed railway single-track tunnel substrate according to claim 1 decompression drainage system, it is characterised in that the draining Conduit(3)Lower end tube wall is provided with multiple water seepage holes(31).
3. high-speed railway single-track tunnel substrate according to claim 1 decompression drainage system, it is characterised in that the draining Conduit(3)Lower end is enclosed with permeable geotextiles(5).
4. high-speed railway single-track tunnel substrate according to claim 1 decompression drainage system, it is characterised in that the infiltration Well(2)It is interior filled with rubble(4).
CN201611090811.0A 2016-12-01 2016-12-01 Pressure-reduction water-draining system for high-speed-railway-single-track-tunnel substrate CN106703881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611090811.0A CN106703881A (en) 2016-12-01 2016-12-01 Pressure-reduction water-draining system for high-speed-railway-single-track-tunnel substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611090811.0A CN106703881A (en) 2016-12-01 2016-12-01 Pressure-reduction water-draining system for high-speed-railway-single-track-tunnel substrate

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CN106703881A true CN106703881A (en) 2017-05-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109973147A (en) * 2019-03-08 2019-07-05 中铁十九局集团第三工程有限公司 A kind of vcehicular tunnel drainage groove applies method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201943177U (en) * 2011-02-23 2011-08-24 四川省交通运输厅公路规划勘察设计研究院 Highway tunnel central drainage inspection well
CN204419256U (en) * 2015-01-20 2015-06-24 山西省交通科学研究院 A kind of merging groove containing tunnel cable groove and roadside drainage ditch
CN104806270A (en) * 2015-05-09 2015-07-29 西安科技大学 Double-arch tunnel modularized middle wall with waterproofing and draining functions and construction method thereof
CN104818991A (en) * 2015-03-30 2015-08-05 中铁二十四局集团福建铁路建设有限公司 Construction method of residual slope wash tunnel with shallow cover and unsymmetrical pressure
CN206233950U (en) * 2016-11-11 2017-06-09 中铁十二局集团有限公司 Depressurize drainage system in a kind of high-speed railway single-track tunnel base

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201943177U (en) * 2011-02-23 2011-08-24 四川省交通运输厅公路规划勘察设计研究院 Highway tunnel central drainage inspection well
CN204419256U (en) * 2015-01-20 2015-06-24 山西省交通科学研究院 A kind of merging groove containing tunnel cable groove and roadside drainage ditch
CN104818991A (en) * 2015-03-30 2015-08-05 中铁二十四局集团福建铁路建设有限公司 Construction method of residual slope wash tunnel with shallow cover and unsymmetrical pressure
CN104806270A (en) * 2015-05-09 2015-07-29 西安科技大学 Double-arch tunnel modularized middle wall with waterproofing and draining functions and construction method thereof
CN206233950U (en) * 2016-11-11 2017-06-09 中铁十二局集团有限公司 Depressurize drainage system in a kind of high-speed railway single-track tunnel base

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109973147A (en) * 2019-03-08 2019-07-05 中铁十九局集团第三工程有限公司 A kind of vcehicular tunnel drainage groove applies method

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