CN105370315A - Drainage construction technology for seasonally-frozen ground tunnel - Google Patents
Drainage construction technology for seasonally-frozen ground tunnel Download PDFInfo
- Publication number
- CN105370315A CN105370315A CN201510904655.6A CN201510904655A CN105370315A CN 105370315 A CN105370315 A CN 105370315A CN 201510904655 A CN201510904655 A CN 201510904655A CN 105370315 A CN105370315 A CN 105370315A
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- Prior art keywords
- concrete
- splash guard
- waterstop
- frozen ground
- construction technology
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
-
- 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 drainage construction technology for a seasonally-frozen ground tunnel. The technology includes the following steps that 1, staking out in survey is conducted; 2, longitudinal drainage pipes, transverse drainage pipes and annular drainage pipes are installed; 3, the rock surface and the concrete surface of a primary support are trimmed; 4, a waterproof board is installed; 5, a stopper plate and a water stop are installed. The construction technology is simple, the number of construction devices is small, the construction period is short, and the technology has a guide effect on waterproof and drainage construction of the seasonally-frozen ground region tunnel.
Description
Technical field
The invention belongs to highway construction technology field, particularly relate to and refer to a kind of seasonal frozen ground tunnel drainage construction technology.
Background technology
In recent years, although China achieves many achievements in tunnel construction, tunnel water handling achieving progress, also there is many problems in tunnel water handling in varying degrees, forms great challenges to safe driving.Waterproof and Drainage Construction of Tunnel ensures the key built up smoothly of tunnel, and it is had laid a good foundation for works waterproofing; Carrying out structure waterproof drainage, is the important prerequisite ensureing tunnel normal operation.For this reason, speedway road owner pays much attention to, based on this, and research a kind of seasonal frozen ground tunnel water proofing construction technology of development and Design.
Summary of the invention
The object of the invention is to: a kind of seasonal frozen ground tunnel drainage construction technology is provided, guarded drainage mainly for tunnel highway under the complex geological condition of frozen ground regions is constructed, and this working procedure is simple, construction equipment is few, construction period is short, has directive function to the guarded drainage construction in extremely frigid zones tunnel.
The present invention is achieved through the following technical solutions: a kind of seasonal frozen ground tunnel drainage construction technology, comprise the following steps: (1) surveying and locating, measure and release tunnel center line, every 5.0m mono-point, measure and release longitudinal drainage pipe plan-position, every 5m mono-point, and measure design elevation at the bottom of longitudinal drainage pipe pipe with level gauge, measure and release short abutment wall sideline, every 5m mono-point, and it is high to measure short abutment wall top mark with level gauge, calculate short abutment wall top mark high according to trolley formwork, short abutment wall top mark height is in cable trench top 20cm;
(2) longitudinal drainage pipe, transverse drain, ring direction drainpipe are installed, the every 10m of transverse drain together, when building short abutment wall, transverse drain is supported by steel bracket, transverse drain horizontal wall inscription is 2%, according to transverse drain absolute altitude determination longitudinal drainage pipe elevation, be fixed on by longitudinal drainage pipe on the concrete band of wide 20cm, longitudinal drainage pipe is full tunnel holing through laying along corner, both sides, transverse drain, longitudinal drainage pipe are connected by threeway with ring direction drainpipe, and junction adopts non-woven wraps;
(3) repair the concrete surface of scar and preliminary bracing, to preliminary bracing place concrete skin cut steel bar end and anchor pole head before installation splash guard, with mortar levelling, cutter is repaiied to uneven position and fills spray;
(4) splash guard is installed, from vault bilateral symmetry suspension from top to bottom when hanging up, bore the spacing of pressing bandage on waterproofing materials with qi of chong channel ascending adversely, supporting concrete bores dark 5-10cm hole in the early stage, there is the wooden unit of thin wire to squeeze in hole on bolt, then steel wire is fixedly connected with the bandage on splash guard;
(5) blocking plate and waterstop are installed.
Further, in order to better realize the present invention, the mounting method of waterstop is in described step (5): 5-1, according to lining thickness, waterstop is placed in the middle of blocking plate, waterstop is positioned at lining cutting concrete central authorities, holes under 70-90cm is close to waterstop on blocking plate; 5-2, to be penetrated to opposite side by concrete side to be built by reinforcing bar card, the half of inner side clamping waterstop, second half of waterstop contacts with blocking plate; 5-3, after concrete setting, remove blocking plate, waterstop is stretching, even up, be fastened on waterstop through bar bending.Before watering concrete, constuction joint carried out artificial chiseling process and adopt high-pressure blast to rinse, then carrying out next plate two and serve as a contrast concrete placings.
Further, in order to better realize the present invention, limit further, in described step (2), the concrete grammar of circle draining pipe construction is: adopt detecting water by pilot hole geophysical prospecting, determine that face descends moisture distribution situation anteriorly, carry out pre-pouring grout shutoff.
Further, in order to better realize the present invention, further restriction, in described step (2), the concrete grammar of circle draining pipe construction is: ring direction drainpipe adopts spring rows water pipe, cause tunnel drainage ditch side by side, spring ring direction drainpipe is arranged in encryption, and the effective reinforcing bar of circle draining is made hoop snap ring and fixed every 1m.
Further, in order to better realize the present invention, limit further, in described step (2), the concrete grammar of circle draining pipe construction is: adopt band drain to be close to scar, two pieces of suspension holdfasts of interval 50cm are set every 1m, and adopt steel wire to be fixed by band drain.
Further, in order to better realize the present invention, limit further, in described step (2), the concrete grammar of circle draining pipe construction is: adopt and install splash guard process.
Further, in order to better realize the present invention, further restriction, described step (4) is installed the concrete steps of splash guard and is comprised: splash guard cuts out bonding or welding, seam inspection blanking, hole in, lay stand in place, along vault, longitudinally air bag is set, stand longitudinally lays steel wire, splash guard is laid on stand, rise bracing frame, airbag aeration, hang hold iron wire, adjacent circulation joint treatment, fall bracing frame, venting take out air bag, laying quality inspection.
Further, in order to better realize the present invention, further restriction, the concrete grammar of described installation splash guard is: 4-1, perfusion concrete extruding under can with preliminary bracing concrete close contact, the length of splash guard is than preliminary bracing concrete outline line length large 5%-10%; 4-2, adopt suitable Mobile workbench, from vault bilateral symmetry suspension from top to bottom splash guard, the hole of in the early stage supporting concrete boring dark 5-10m by the spacing of waterproofing materials bandage is bored in qi of chong channel ascending adversely, is had by bolt in the wooden unit patchhole of finer wire, then the bandage on steel wire and splash guard is closely fixed.
The present invention compared with prior art, has the following advantages and beneficial effect:
Construction technology of the present invention is simple, and construction equipment is few, and the construction period is short, has directive function to the guarded drainage construction in tunnel, frozen ground regions.
Accompanying drawing explanation
Fig. 1 is construction flow chart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto, without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacement and change, all should comprise within the scope of the invention.
Embodiment 1:
As shown in Figure 1, a kind of seasonal frozen ground tunnel drainage construction technology, and this technique is mainly applicable to highway tunnel guarded drainage construction in tunnel under the complex geological condition of frozen ground regions, this construction technology mainly comprises the following steps:
(1) surveying and locating, measure and release tunnel center line, every 5.0m mono-point, measures and releases longitudinal drainage pipe plan-position, every 5m mono-point, and measure design elevation at the bottom of longitudinal drainage pipe pipe with level gauge, measure and release short abutment wall sideline, every 5m mono-point, and it is high to measure short abutment wall top mark with level gauge, calculate short abutment wall top mark according to trolley formwork high, short abutment wall top mark height is in cable trench top 20cm;
(2) longitudinal drainage pipe, transverse drain, ring direction drainpipe are installed, the every 10m of transverse drain together, when building short abutment wall, transverse drain is supported by steel bracket, transverse drain horizontal wall inscription is 2%, according to transverse drain absolute altitude determination longitudinal drainage pipe elevation, be fixed on by longitudinal drainage pipe on the concrete band of wide 20cm, longitudinal drainage pipe is full tunnel holing through laying along corner, both sides, transverse drain, longitudinal drainage pipe are connected by threeway with ring direction drainpipe, and junction adopts non-woven wraps;
(3) repair the concrete surface of scar and preliminary bracing, to preliminary bracing place concrete skin cut steel bar end and anchor pole head before installation splash guard, with mortar levelling, cutter is repaiied to uneven position and fills spray;
(4) install splash guard, splash guard supporting in the early stage should be stablized and lay after reporting management acceptance(check);
According to the material of plate when splash guard is hanged up, and guarantee there is certain surplus capacity, hang up unsuitable tension, can be closely connected with preliminary bracing concrete under the extruding of perfusion concrete, the length of splash guard and the outline line length large 5%-10% of preliminary bracing concrete.
Splash guard is installed, adopt Mobile workbench, from vault bilateral symmetry suspension from top to bottom during installation, the hole of in the early stage supporting concrete boring dark 5 ~ 10cm according to the spacing of bandage on waterproofing materials is bored with qi of chong channel ascending adversely, the wooden unit of fastening finer wire is squeezed in hole, then the bandage on steel wire and splash guard is posted and tie admittedly.Splash guard surface should be smooth-going, non-wrinkle, without disrepair phenomenon, and closely connected with hole wall, degree of tightness appropriateness, without tightening phenomenon.
Adjacent splash guard lap length is not less than 10cm, and the weld width of splash guard meets design specifications requirement, uses special hot welder during welding.When splash guard is damaged, the same material that application is greater than damaged crack carries out repair welding.Weld seam, benefit eye are answered closely knit full, must not have bubble, space.Solder skip, dry joint place answer repair welding, if there is burned, burn-through place, applies the weldering of same splash guard and to cover or by supervising engineer's instruction processing.
(5) blocking plate and waterstop are installed.
Embodiment 2:
The present embodiment limits further on the basis of embodiment 1, the mounting method of waterstop is in described step (5): 5-1, according to lining thickness, waterstop is placed in the middle of blocking plate, and waterstop is positioned at lining cutting concrete central authorities, holes under 70-90cm is close to waterstop on blocking plate; 5-2, to be penetrated to opposite side by concrete side to be built by reinforcing bar card, the half of inner side clamping waterstop, second half of waterstop contacts with blocking plate; 5-3, after concrete setting, remove blocking plate, waterstop is stretching, even up, be fastened on waterstop through bar bending.Before watering concrete, constuction joint carried out artificial chiseling process and adopt high-pressure blast to rinse, then carrying out next plate two and serve as a contrast concrete placings.
Embodiment 3:
The present embodiment limits further on the basis of above-described embodiment, in described step (2), the concrete grammar of circle draining pipe construction is: adopt detecting water by pilot hole geophysical prospecting, determine that face descends moisture distribution situation anteriorly, carry out pre-pouring grout shutoff, this method of operating is mainly for water burst, gushing water section in tunnel, and namely seep water during rainy season in tunnel water flush region in a tubular form that formed.
Embodiment 4:
The present embodiment limits further on the basis of above-described embodiment, in described step (2), the concrete grammar of circle draining pipe construction is: ring direction drainpipe adopts spring rows water pipe, cause tunnel drainage ditch side by side, spring ring direction drainpipe is arranged in encryption, the effective reinforcing bar of circle draining is made hoop snap ring and is fixed every 1m, this method of operating is mainly for water burst, gushing water section in tunnel, and namely seep water during rainy season in tunnel water flush region in a tubular form that formed.
Embodiment 5:
The present embodiment limits further on the basis of above-described embodiment, in described step (2), the concrete grammar of circle draining pipe construction is: adopt band drain to be close to scar, two pieces of suspension holdfasts of interval 50cm are set every 1m, and adopt steel wire to be fixed by band drain, what this method of operating was taked mainly for location of dripping in tunnel is combined band drain the method processed with splash guard.
Embodiment 6:
The present embodiment limits further on the basis of above-described embodiment, in described step (2), the concrete grammar of circle draining pipe construction is: adopt and install splash guard process, this method of operating mainly for the infiltration Shao Shui location in tunnel, namely no matter rainy season whether, dry anhydrous lower of crag.
Embodiment 7:
The present embodiment limits further on the basis of above-described embodiment, and described step (4) is installed the concrete steps of splash guard and comprised: splash guard cuts out bonding or welding, seam inspection blanking, hole in, lay stand in place, along vault, longitudinally air bag is set, stand longitudinally lays steel wire, splash guard is laid on stand, rise bracing frame, airbag aeration, hang hold iron wire, adjacent circulation joint treatment, fall bracing frame, venting take out air bag, laying quality inspection.
Embodiment 8:
The present embodiment limits further on the basis of above-described embodiment, and the concrete grammar of described installation splash guard is: 4-1, perfusion concrete extruding under can with preliminary bracing concrete close contact, the length of splash guard is than preliminary bracing concrete outline line length large 5%-10%; 4-2, adopt suitable Mobile workbench, from vault bilateral symmetry suspension from top to bottom splash guard, the hole of in the early stage supporting concrete boring dark 5-10m by the spacing of waterproofing materials bandage is bored in qi of chong channel ascending adversely, is had by bolt in the wooden unit patchhole of finer wire, then the bandage on steel wire and splash guard is closely fixed.
The above is only preferred embodiment of the present invention, and not do any pro forma restriction to the present invention, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present invention, all falls within protection scope of the present invention.
Claims (8)
1. a seasonal frozen ground tunnel drainage construction technology, is characterized in that, comprises the following steps, (1) surveying and locating, measures and releases tunnel center line, every 5.0m mono-point, measure and release longitudinal drainage pipe plan-position, every 5m mono-point, and measure design elevation at the bottom of longitudinal drainage pipe pipe with level gauge, measure and release short abutment wall sideline, every 5m mono-point, and it is high to measure short abutment wall top mark with level gauge, calculate short abutment wall top mark high according to trolley formwork, short abutment wall top mark height is in cable trench top 20cm;
(2) longitudinal drainage pipe, transverse drain, ring direction drainpipe are installed, the every 10m of transverse drain together, when building short abutment wall, transverse drain is supported by steel bracket, transverse drain horizontal wall inscription is 2%, according to transverse drain absolute altitude determination longitudinal drainage pipe elevation, be fixed on by longitudinal drainage pipe on the concrete band of wide 20cm, longitudinal drainage pipe is full tunnel holing through laying along corner, both sides, transverse drain, longitudinal drainage pipe are connected by threeway with ring direction drainpipe, and junction adopts non-woven wraps;
(3) repair the concrete surface of scar and preliminary bracing, to preliminary bracing place concrete skin cut steel bar end and anchor pole head before installation splash guard, with mortar levelling, cutter is repaiied to uneven position and fills spray;
(4) splash guard is installed, from vault bilateral symmetry suspension from top to bottom when hanging up, bore the spacing of pressing bandage on waterproofing materials with qi of chong channel ascending adversely, supporting concrete bores dark 5-10cm hole in the early stage, there is the wooden unit of thin wire to squeeze in hole on bolt, then steel wire is fixedly connected with the bandage on splash guard;
(5) blocking plate and waterstop are installed.
2. a kind of seasonal frozen ground tunnel drainage construction technology according to claim 1, it is characterized in that: the mounting method of waterstop is in described step (5): 5-1, according to lining thickness, waterstop is placed in the middle of blocking plate, waterstop is positioned at lining cutting concrete central authorities, holes under 70-90cm is close to waterstop on blocking plate; 5-2, to be penetrated to opposite side by concrete side to be built by reinforcing bar card, the half of inner side clamping waterstop, second half of waterstop contacts with blocking plate; 5-3, after concrete setting, remove blocking plate, waterstop is stretching, even up, be fastened on waterstop through bar bending, before watering concrete, constuction joint carried out artificial chiseling process and adopt high-pressure blast to rinse, then carry out next plate two and serve as a contrast concrete placings.
3. a kind of seasonal frozen ground tunnel drainage construction technology according to claim 2, it is characterized in that: in described step (2), the concrete grammar of circle draining pipe construction is: adopt detecting water by pilot hole geophysical prospecting, determine that face descends moisture distribution situation anteriorly, carry out pre-pouring grout shutoff.
4. a kind of seasonal frozen ground tunnel drainage construction technology according to claim 2, it is characterized in that: in described step (2), the concrete grammar of circle draining pipe construction is: ring direction drainpipe adopts spring rows water pipe, cause tunnel drainage ditch side by side, spring ring direction drainpipe is arranged in encryption, and the effective reinforcing bar of circle draining is made hoop snap ring and fixed every 1m.
5. a kind of seasonal frozen ground tunnel drainage construction technology according to claim 2, is characterized in that:
In described step (2), the concrete grammar of circle draining pipe construction is: adopt band drain to be close to scar, arranges two pieces of suspension holdfasts of interval 50cm, and adopt steel wire to be fixed by band drain every 1m.
6. a kind of seasonal frozen ground tunnel drainage construction technology according to claim 2, is characterized in that: in described step (2), the concrete grammar of circle draining pipe construction is: adopt and install splash guard process.
7. a kind of seasonal frozen ground tunnel drainage construction technology according to any one of claim 3 to 6, is characterized in that: described step (4) is installed the concrete steps of splash guard and comprised: splash guard cuts out bonding or welding, seam inspection blanking, hole in, lay stand in place, along vault, longitudinally air bag is set, stand longitudinally lays steel wire, splash guard is laid on stand, rise bracing frame, airbag aeration, hang hold iron wire, adjacent circulation joint treatment, fall bracing frame, venting take out air bag, laying quality inspection.
8. a kind of seasonal frozen ground tunnel drainage construction technology according to any one of claim 3 to 6, it is characterized in that: the concrete grammar of described installation splash guard is: 4-1, perfusion concrete extruding under can with preliminary bracing concrete close contact, the length of splash guard is than preliminary bracing concrete outline line length large 5%-10%; 4-2, adopt suitable Mobile workbench, from vault bilateral symmetry suspension from top to bottom splash guard, the hole of in the early stage supporting concrete boring dark 5-10m by the spacing of waterproofing materials bandage is bored in qi of chong channel ascending adversely, is had by bolt in the wooden unit patchhole of finer wire, then the bandage on steel wire and splash guard is closely fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510904655.6A CN105370315B (en) | 2015-12-09 | 2015-12-09 | A kind of frost zone tunnel drainage construction technology |
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| CN201510904655.6A CN105370315B (en) | 2015-12-09 | 2015-12-09 | A kind of frost zone tunnel drainage construction technology |
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| CN105370315A true CN105370315A (en) | 2016-03-02 |
| CN105370315B CN105370315B (en) | 2018-09-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014478A (en) * | 2016-05-30 | 2016-10-12 | 爱佩仪中测（成都）精密仪器有限公司 | Cooling circulation system used for single-arm three-dimensional measurement scribing instrument |
| CN106385837A (en) * | 2016-08-29 | 2017-02-15 | 山东胜伟园林科技有限公司 | Drainage construction process for improvement of saline-alkali land |
| CN108222979A (en) * | 2017-12-29 | 2018-06-29 | 中铁二局第工程有限公司 | Rich water karst waterproof and Drainage Construction of Tunnel method |
| CN108999635A (en) * | 2018-08-14 | 2018-12-14 | 湖南科技大学 | A kind of pilot drainage arrangement and construction method for the weak cementing roadway surrounding rock of rich water |
| CN113464202A (en) * | 2021-07-22 | 2021-10-01 | 陕西聚博德新材料科技有限公司 | Mounting process of tunnel drainage plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678174A (en) * | 2012-05-28 | 2012-09-19 | 中交第一公路勘察设计研究院有限公司 | Tunnel drainage system passing through permafrost region and non-frozen ground region and arrangement method thereof |
-
2015
- 2015-12-09 CN CN201510904655.6A patent/CN105370315B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678174A (en) * | 2012-05-28 | 2012-09-19 | 中交第一公路勘察设计研究院有限公司 | Tunnel drainage system passing through permafrost region and non-frozen ground region and arrangement method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 罗定伦: "冻土隧道防排水浅探", 《西部探矿工程》 * |
| 黄鑫: "浅谈季节性冻土隧道进口段防排水施工", 《民营科技》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014478A (en) * | 2016-05-30 | 2016-10-12 | 爱佩仪中测（成都）精密仪器有限公司 | Cooling circulation system used for single-arm three-dimensional measurement scribing instrument |
| CN106385837A (en) * | 2016-08-29 | 2017-02-15 | 山东胜伟园林科技有限公司 | Drainage construction process for improvement of saline-alkali land |
| CN108222979A (en) * | 2017-12-29 | 2018-06-29 | 中铁二局第工程有限公司 | Rich water karst waterproof and Drainage Construction of Tunnel method |
| CN108222979B (en) * | 2017-12-29 | 2019-11-22 | 中铁二局第一工程有限公司 | Rich water karst waterproof and Drainage Construction of Tunnel method |
| CN108999635A (en) * | 2018-08-14 | 2018-12-14 | 湖南科技大学 | A kind of pilot drainage arrangement and construction method for the weak cementing roadway surrounding rock of rich water |
| CN113464202A (en) * | 2021-07-22 | 2021-10-01 | 陕西聚博德新材料科技有限公司 | Mounting process of tunnel drainage plate |
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| CN105370315B (en) | 2018-09-28 |
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