CN106761851B - A kind of tunnel water proofing subregion construction and its implementation using spraying waterproof technique - Google Patents
A kind of tunnel water proofing subregion construction and its implementation using spraying waterproof technique Download PDFInfo
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- CN106761851B CN106761851B CN201710019534.2A CN201710019534A CN106761851B CN 106761851 B CN106761851 B CN 106761851B CN 201710019534 A CN201710019534 A CN 201710019534A CN 106761851 B CN106761851 B CN 106761851B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Abstract
The invention discloses a kind of tunnel water proofing subregion constructions and its implementation using spraying waterproof technique, non-woven fabrics and waterproof layer including being laid on preliminary bracing surface successively, non-woven fabrics and waterproof layer disconnect forming waterproof subregion position at the construction joint of secondary lining；The preliminary bracing surface at waterproof subregion position is equipped on waterproof mortar screed-coat, waterproof mortar screed-coat and the non-woven fabrics to connect with it and waterproof layer edge and is covered with spraying waterproof layer；Waterproof section is divided according to the reserved location of Second Lining Construction seam, waterproof mortar screed-coat is sprayed in waterproof subregion portion faces, it is laid with non-woven fabrics and waterproof layer in waterproof section, then applies the spraying waterproof layer at waterproof subregion position, finally pours the secondary lining of waterproof section.The waterproof subregion of composite lining tunnel can be achieved in the present invention, has separated underground water along non-woven fabrics of the tunnel head fall after waterproof layer and the channelling in gap so that the improvement after tunnel leaks is more effective, economical.
Description
Technical field
The present invention relates to tunnel water proofing technical field, specially a kind of tunnel water proofing subregion structures using spraying waterproof technique
It makes and its implementation.
Background technology
At present in Tunnel Engineering field（In particular by the composite lining tunnel of drill bursting construction）, common waterproof
Measure is that the splash guard and non-woven fabrics buffer layer of full-enclosed or half-packaging is arranged between supporting and secondary lining in the early stage.Due to
Splash guard is not bonded with secondary lining concrete usually, although playing the role of isolation and lubrication to a certain extent, is avoided
Cracking caused by concrete shrinkage, but but also underground water can be formed between secondary lining and " be altered after waterproof layer local damage
Water " is so that leakage range expands, and searches leak source and leak stopping repairing difficulty.To avoid problem above, in recent years in tunnel again
Tectonic type and the measure for taking the tunnel partitioning waterproofing suitable for splash guard, at present gradually in highway, railway, subway
Etc. be applied in Tunnel Engineering.
Document disclosed in Rui Yan outstanding person et al.（《Tunnel partitioning waterproofing model test and engineering Application Research》,《Modern tunnel skill
Art》, the 1st phase of volume 42, the 30-37 pages, 2 months 2005）, describe a kind of waterproofing by zoning of composite lining tunnel.
The technology circumferential closely knit welding back-adhering waterstop, tooth of back-adhering waterstop on the splash guard that Second Lining Construction stitches position
Grouting Pipe is laid in slot, the gap at position is stitched by slip casting seal construction, to form the waterproof between splash guard and secondary lining
Subregion.Once leak occurs for some position in waterproof subregion, will not channelling and influence other subregions, can be directed to independent partitions into
Row watertightness treatment, to improve regulation effect and reduce improvement cost.Based on the principle that carrying out the combined type lining of waterproof guard
Block tunnel is relatively conventional at present, and main sides focus on the waterproof subregion at construction joint position, subway sectional tunnel in railway, vcehicular tunnel
The splash guard surface programming Grouting Pipe in waterproof subregion is then usually also needed to, leak stopping is carried out to facilitate after leaking and controls
Reason.Tunnel water proofing subregion way more than, due to being only to form subregion, subregion between splash guard and secondary lining
Facility（Back-adhering waterstop）There is no bonding is formed with preliminary bracing, underground water still can be between splash guard and preliminary bracing
Gap in channelling, consequently, it is possible to the breakage or weakness from other waterproof subregions enter tunnel, therefore partitioning waterproofing effect
Still limited.
With current spraying waterproof material（Such as spray polyurea, acrylates spraying film materials, spraying rapid hardening rubber asphalt）
And technology is promoted in Tunnel Engineering, starts gradually to replace the splash guard in tunnel.Such spraying waterproof material is compound
In application, water proof structure pattern is consistent with splash guard system under normal conditions in formula trimmed tunnel（Supporting surface is laid in the early stage
Spraying waterproof layer is applied after non-woven fabrics）, there is also the demands of tunnel water proofing subregion.But due to the back sticking type for splash guard system
Waterstop material is incompatible with all kinds of spraying waterproof materials, therefore can not coordinate the use of spraying waterproof material and reach effectively anti-
The effect in moisture area, at present also there is not yet being suitable for all kinds of spraying waterproof technique dedicated tunnel partitioning waterproofing facilities or structure type
Formula.
Invention content
In view of the above-mentioned problems, anti-moisture in composite lining tunnel can be solved the purpose of the invention is to provide one kind
A kind of tunnel water proofing subregion construction and its implementation using spraying waterproof technique of the halfway problem in area.
A kind of tunnel water proofing subregion construction using spraying waterproof technique, including it is laid on the nothing on preliminary bracing surface successively
Woven fabric and waterproof layer, non-woven fabrics and waterproof layer disconnect forming waterproof subregion position at the construction joint of secondary lining；The waterproof
The preliminary bracing surface at subregion position is equipped with waterproof mortar screed-coat, waterproof mortar screed-coat and the non-woven fabrics to connect with it and prevents
Spraying waterproof layer is covered on water layer edge.
Further, the preliminary bracing being located at the waterproof subregion position of country rock loose crushing or stratum rich water section
With grouting water-tight circle is also had additional in country rock.
Further, the spraying waterproof layer is adopted as acrylates spray film water-proofing material.
Further, the preliminary bracing basal plane is also equipped with annular, longitudinal direction or local sewerage system, the draining system
Unite in tunnel lateral sulcus or Central drain be connected to.
A kind of implementation of tunnel water proofing subregion construction using spraying waterproof technique, includes the following steps：
Step 1：After tunnel excavation and preliminary bracing apply, anti-pool is divided according to the reserved location of Second Lining Construction seam
Section, and supporting surface reserves the range at the intersegmental waterproof subregion position of adjacent two waterproofs subregion in the early stage；
Step 2：The preliminary bracing basal plane at waterproof subregion position is cleared up, it is levelling in its surface spraying or brushing waterproof mortar
Layer；
Step 3：It is laid with non-woven fabrics and waterproof layer in first waterproof section, makes itself and waterproof mortar screed-coat edge phase
It connects, and closely connected preliminary bracing basal plane；
Step 4：The spraying waterproof layer at waterproof subregion position is applied, so that it is covered waterproof mortar screed-coat and first anti-
The non-woven fabrics and waterproof layer of pool section edge；
Step 5：The secondary lining of first waterproof section is poured, and applies construction joint waterproof measure；
Step 6：The non-woven fabrics and waterproof layer being laid with from waterproof subregion adjacent margins in next waterproof section, non-woven fabrics
And waterproof layer；
Step 7：Second time spraying waterproof layer is applied at waterproof subregion position, connects with covering and effectively next anti-pool
The non-woven fabrics and waterproof layer of section；
Step 8：The secondary lining in next waterproof section is poured, and applies construction joint waterproof measure；
Step 9：Circulation step 6 to 8 is straight only to complete.
Further, further include after the step 1：Waterproof subregion at country rock loose crushing or stratum rich water section
The preliminary bracing surface at position drills along tunnel circumferential direction, squeezes into Grouting Pipe and pours into grouting material, at waterproof subregion position
Preliminary bracing or and its behind country rock in form continuous grouting water-tight circle.
The beneficial effects of the invention are as follows：The waterproof subregion of composite lining tunnel can be achieved in the present invention, has separated underground water
Along non-woven fabrics of the tunnel head fall after waterproof layer and the channelling in gap so that tunnel leak after improvement more
Effectively, economical.
Description of the drawings
Fig. 1 is the schematic diagram without slip casting measure during the tunnel water proofing subregion of the present invention constructs.
Fig. 2 is the schematic diagram for having during the tunnel water proofing subregion of the present invention constructs slip casting measure.
Fig. 3 is the composite lining tunnel water-proof system schematic diagram of the embodiment of the present invention.
Fig. 4 is the section arrangement schematic diagram of the embodiment of the present invention 1（1-1 sections in Fig. 3）.
Fig. 5 is the section arrangement schematic diagram of the embodiment of the present invention 2（2-2 sections in Fig. 3）.
In figure：1- country rocks；2- preliminary bracings；3- non-woven fabrics；4- waterproof layers；5- secondary linings；6- construction joints；7- construction joints
Waterproof measure；8- waterproof mortar courses；9- sprays waterproof layer；10- Grouting Pipes；11- grouting water-tight circles.
Specific implementation mode
The present invention is described in further details in the following with reference to the drawings and specific embodiments.As shown in Figure 1, a kind of using spray
The tunnel water proofing subregion construction of waterproof technique is applied, including is laid on the non-woven fabrics 3 and waterproof layer 4 on 2 surface of preliminary bracing, nothing successively
Woven fabric 3 and waterproof layer 4 disconnect forming waterproof subregion position at the construction joint 6 of secondary lining 5；At the beginning of waterproof subregion position
2 surface of phase supporting is equipped with waterproof mortar screed-coat 8,4 side of waterproof mortar screed-coat 8 and the non-woven fabrics 3 to connect with it and waterproof layer
Spraying waterproof layer 9 is covered on edge.
Namely at 6 position of construction joint of composite lining tunnel secondary lining 5, initial stage branch will be laid in adjacent sections
Protect the non-woven fabrics 3 and waterproof layer 4 on 2 surfaces（Splash guard or spraying waterproof material）It disconnects, reserves the waterproof subregion portion of one fixed width
Position；There is spraying on the surface of preliminary bracing 2 at the waterproof subregion position or brushes the waterproof mortar screed-coat 8 formed；Anti-
The surface of the waterproof mortar screed-coat 8 at moisture area position covers waterproof mortar course 8 and connection adjacent sections with spraying waterproof layer 9
Waterproof layer 4.Wherein, the material for forming tunnel water proofing subregion position spraying waterproof layer 9 can be that acrylates sprays film waterproof material
Expect or the material that 2 surface of spraying method supporting in the early stage forms closed, continuous waterproof layer can be used in other.
It, can be in tunnel water proofing subregion in 1 loose crushing of country rock or stratum rich water section to further enhance waterproof effect
The continuous grouting seepage-proofing ring 11 of a certain range and depth is formed at position by slip casting measure increase, as shown in Figure 2；Alternatively,
Tunnel that 2 basal plane of preliminary bracing is laid with is circumferential, longitudinal direction and local sewerage system, and in tunnel lateral sulcus and Central drain connect
It is logical.
Specific implementation method is：After tunnel excavation and preliminary bracing 2 apply, according to the reserved place of 5 construction joint 6 of secondary lining
Division waterproof section is set, and the surface of supporting in the early stage 2 reserves waterproof subregion position range；In country rock loose crushing or underground water
In the case of development, 2 surface of preliminary bracing at waterproof subregion position is drilled along tunnel circumferential direction with a determining deviation, is squeezed into certain
The Grouting Pipe 10 of length simultaneously pours into grouting material, preliminary bracing 2 at waterproof subregion position or and its behind certain depth
Continuous grouting water-tight circle 11 is formed in country rock 1；The basal plane for clearing up the preliminary bracing 2 at waterproof subregion position sprays on its surface
Painting or brushing waterproof mortar screed-coat 8；2 surface of preliminary bracing in first tunnel water proofing section is laid with non-woven fabrics 3 and prevents
Water layer 4, until the edge of the waterproof mortar screed-coat 8 at waterproof subregion position, which disconnects and fixes, keeps closely connected 2 basal plane of preliminary bracing；
The spraying waterproof layer 9 at waterproof subregion position is applied, is covered at waterproof mortar screed-coat 8 and first tunnel water proofing section edge
Non-woven fabrics 3 and waterproof layer 4, form the connector for effectively connecting and reserving next waterproof section spraying waterproof layer 9；Pour first
The secondary lining 5 of a waterproof section, and apply construction joint waterproof measure 7；It is laid with from waterproof subregion adjacent margins next anti-
Non-woven fabrics 3 in the section of pool and waterproof layer 4, and keep closely connected 2 basal plane of preliminary bracing in its edge；Is applied at waterproof subregion position
Two times spraying waterproof layers 9, to cover and effectively connect the non-woven fabrics 3 and waterproof layer 4 of next waterproof section；It pours next anti-
Secondary lining 5 in the section of pool.
Wherein, the preliminary bracing 2 in tunnel, secondary lining 5 can be divided into inverted arch, arch wall position branch applies, corresponding position
Non-woven fabrics 3, waterproof layer 4 and waterproof subregion measure（Waterproof mortar screed-coat 8, spraying waterproof layer 9, Grouting Pipe 10, grouting water-tight circle
11）Also it can accordingly branch apply.
Embodiment 1：Such as the left structure form and Fig. 4 in Fig. 3（1-1 sections in Fig. 3）It is shown, it can be in half packet waterproof
Waterproof subregion is realized in the tunnel water proofing system of pattern.
Tunnel water proofing subregion tectonic type in the present embodiment is：With the construction joint 6 of composite lining tunnel secondary lining 5
Position divides tunnel water proofing subregion, and there are the ranges of one fixed width so that waterproof subregion measure is arranged between adjacent waterproof subregion；From
The vault in tunnel to both sides arch springing range be arranged tunnel water proofing subregion measure, inverted arch position due to being not provided with waterproof layer,
Also it is not provided with tunnel water proofing subregion measure；When country rock is preferable or 6 basal plane underground water of preliminary bracing leakage is not serious, using such as figure
Without the waterproof subregion measure of grouting water-tight circle shown in 1（Left side waterproof subregion measure in Fig. 4）；When country rock is more broken,
When layer rich water, using the waterproof subregion measure as shown in Figure 2 with grouting water-tight circle（Right side waterproof subregion measure in Fig. 4）.
Its implementation is as follows：
（1）After 2 works are applied in the preliminary bracing in tunnel, according to the 6 location determination tunnel water proofing subregion of construction joint of secondary lining 5
Position and subregion position range；
（2）The case where depending on country rock and underground water, decides whether the Grouting Pipe 10 and grouting water-tight that apply waterproof subregion position
Circle 11；
（3）Tunnel vault to both sides arch springing range, apply waterproof subregion position waterproof mortar screed-coat 8；
（4）Tunnel vault to both sides arch springing range, the non-woven fabrics 3 and waterproof layer 4 that are laid in first waterproof section；
（5）Apply the spraying waterproof layer 9 at waterproof subregion position；
（6）It pours the secondary lining 5 of first waterproof section and applies construction joint waterproof measure 7；
（7）Carry out the tunnel water proofing subregion measure of next cycle and applying for lining cutting.
Embodiment 2：Such as the right structure form and Fig. 5 in Fig. 3（2-2 sections in Fig. 3）It is shown, it can be in full packet waterproof
Waterproof subregion is realized in the tunnel water proofing system of pattern.
Tunnel water proofing subregion tectonic type in the present embodiment is：With the construction joint 6 of composite lining tunnel secondary lining 5
Position divides tunnel water proofing subregion, and there are the ranges of one fixed width so that waterproof subregion measure is arranged between adjacent waterproof subregion；
Tunnel loopful range is respectively provided with tunnel water proofing subregion measure；When country rock is preferable or 6 basal plane underground water of preliminary bracing leakage is not serious
When, using as shown in Figure 1 without the waterproof subregion measure of grouting water-tight circle（Left side waterproof subregion measure in Fig. 5）；Work as country rock
When more broken, stratum rich water, using the waterproof subregion measure as shown in Figure 2 with grouting water-tight circle（The anti-moisture in right side in Fig. 5
Area's measure）.
Its implementation is as follows：
（1）After 2 works are applied in the preliminary bracing in tunnel, according to the 6 location determination tunnel water proofing subregion of construction joint of secondary lining 5
Position and subregion position range；
（2）The case where depending on country rock and underground water, decides whether to apply Grouting Pipe 10 and grouting water-tight circle 11；
（3）Apply the waterproof mortar screed-coat 8 at tunnel inverted arch waterproof subregion position；
（4）It is laid with the non-woven fabrics 3 and waterproof layer 4 at inverted arch position in first waterproof section；
（5）Apply the spraying waterproof layer 9 at inverted arch position at waterproof subregion position；
（6）It pours the secondary lining 5 at first waterproof section inverted arch position and applies construction joint waterproof measure 7；
（7）Apply the waterproof mortar screed-coat 8 at tunnel arch wall waterproof subregion position；
（8）It is laid with the non-woven fabrics 3 and waterproof layer 4 at arch wall position in first waterproof section；
（9）Apply the spraying waterproof layer 9 at arch wall position at waterproof subregion position；
（10）It pours the secondary lining 5 at first waterproof section arch wall position and applies construction joint waterproof measure 7；
（12）Carry out the tunnel water proofing subregion measure of next cycle and applying for lining cutting.
Claims (2)
1. a kind of implementation of tunnel water proofing subregion construction using spraying waterproof technique, which is characterized in that including following step
Suddenly：
Step 1：Tunnel excavation and preliminary bracing（2）After applying, according to secondary lining（5）Construction joint（6）Reserved location divide
Waterproof section, and supporting in the early stage（2）Surface reserves the range at the intersegmental waterproof subregion position of adjacent two waterproofs subregion；
Step 2：Clear up the preliminary bracing at waterproof subregion position（2）Basal plane, it is levelling in its surface spraying or brushing waterproof mortar
Layer（8）；
Step 3：It is laid with non-woven fabrics in first waterproof section（3）And waterproof layer（4）, make itself and waterproof mortar screed-coat（8）
Side edge, and closely connected preliminary bracing（2）Basal plane；
Step 4：Apply the spraying waterproof layer at waterproof subregion position（9）, it is made to cover waterproof mortar screed-coat（8）And first
The non-woven fabrics of waterproof section edge（3）And waterproof layer（4）；
Step 5：Pour the secondary lining of first waterproof section（5）, and apply construction joint waterproof measure（7）；
Step 6：The non-woven fabrics being laid with from waterproof subregion adjacent margins in next waterproof section（3）And waterproof layer（4）；
Step 7：Second time spraying waterproof layer is applied at waterproof subregion position（9）, connect with covering and effectively next anti-pool
The non-woven fabrics of section（3）And waterproof layer（4）；
Step 8：Pour the secondary lining in next waterproof section（5）, and apply construction joint waterproof measure（7）；
Step 9：Circulation step 6 to 8 is straight only to complete.
2. the implementation of the tunnel water proofing subregion construction according to claim 1 using spraying waterproof technique, feature
It is, further includes after the step 1：The initial stage branch at the waterproof subregion position at country rock loose crushing or stratum rich water section
Shield（2）Surface drills along tunnel circumferential direction, squeezes into Grouting Pipe（10）And grouting material is poured into, the initial stage branch at waterproof subregion position
Shield（2）Or and its behind country rock（1）It is middle to form continuous grouting water-tight circle（11）.
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Cited By (1)
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| CN112196590A (en) * | 2020-09-18 | 2021-01-08 | 中铁隧道集团一处有限公司 | Node processing method for enabling anchor rods to penetrate through lining waterproof layer in large-range intensive mode |
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| CN107816361B (en) * | 2017-12-08 | 2024-04-19 | 四川省公路规划勘察设计研究院有限公司 | Tunnel rich water section subregion waterproof system |
| CN108316347A (en) * | 2018-03-09 | 2018-07-24 | 中冶京诚工程技术有限公司 | The assembled underground pipe gallery and its waterproof method of partitioning waterproofing |
| CN109026082A (en) * | 2018-10-15 | 2018-12-18 | 中铁二院成都勘察设计研究院有限责任公司 | A kind of lining construction seam waterproof method and waterproof construction |
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| CN109667607B (en) * | 2018-12-24 | 2021-06-22 | 中铁十八局集团有限公司 | Tunnel partition waterproof construction process |
| CN109751080A (en) * | 2019-01-15 | 2019-05-14 | 西南交通大学 | The supporting construction and construction method with guarded drainage function suitable for water rich strata |
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| CN116557005B (en) * | 2023-06-26 | 2023-12-19 | 山东高速集团有限公司 | Tunnel lining waterproof structure and construction method |
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| JP4108460B2 (en) * | 2002-12-04 | 2008-06-25 | 前田建設工業株式会社 | Construction method of tunnel still water structure |
| CN201407053Y (en) * | 2009-05-22 | 2010-02-17 | 中铁第一勘察设计院集团有限公司 | Support and waterproof structure for metro tunnel of tunnel boring machine construction |
| CN106014456A (en) * | 2016-07-22 | 2016-10-12 | 长安大学 | Double-layer lining special quasi-circular sectional mining method tunnel structure and construction method thereof |
| CN206571506U (en) * | 2017-01-10 | 2017-10-20 | 西南交通大学 | A kind of tunnel water proofing subregion construction using spraying waterproof technique |
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| CN112196590A (en) * | 2020-09-18 | 2021-01-08 | 中铁隧道集团一处有限公司 | Node processing method for enabling anchor rods to penetrate through lining waterproof layer in large-range intensive mode |
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