CN112796780A - Maintainable tunnel lining water pressure gauge mounting device and method - Google Patents
Maintainable tunnel lining water pressure gauge mounting device and method Download PDFInfo
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- CN112796780A CN112796780A CN202110154960.3A CN202110154960A CN112796780A CN 112796780 A CN112796780 A CN 112796780A CN 202110154960 A CN202110154960 A CN 202110154960A CN 112796780 A CN112796780 A CN 112796780A
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- inverted arch
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 17
- 239000004575 stone Substances 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 17
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 201000010099 disease Diseases 0.000 description 8
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a maintainable tunnel lining water pressure gauge mounting device and a maintainable tunnel lining water pressure gauge mounting method, which comprise a central drainage ditch, a reserved groove is arranged on one side of the central drainage ditch, a reserved pipeline is arranged below the reserved groove, the preformed groove is a cubic box fixedly connected with the top end of the preformed pipeline, the preformed pipeline is arranged on an invert filling concrete layer, an invert lining concrete layer is arranged below the invert filling concrete layer, a track plate is arranged at the top of the invert filling concrete layer, a water pressure gauge is directly installed in the preformed pipeline, little to the construction interference, the simple installation, it is convenient to change the maintenance, and the monitoring cable is drawn forth from reservation groove cover plate lateral part, is difficult for being broken by the stretch, reserves the pipeline and is located tunnel center escape canal lateral part, and the pipeline is buried underground in tunnel invert filling concrete and tunnel lining concrete, need not pierce through the tunnel waterproof layer, can not destroy the waterproof and drainage system in tunnel.
Description
Technical Field
The invention relates to the technical field of water-rich tunnel lining water pressure monitoring systems, in particular to a maintainable tunnel lining water pressure meter mounting device and a maintainable tunnel lining water pressure meter mounting method.
Background
China is a country with the most widespread karst in the world, the karst phenomenon spreads over a plurality of provinces, autonomous regions and direct prefectures, and a large number of water-rich tunnels can be encountered when the tunnels are built in the karst region in the southwest. The water pressure disease in the tunnel operation process frequently occurs, which not only affects the safety and durability of the lining structure, but also seriously threatens the operation safety of the tunnel. The water pressure monitoring of the water-rich tunnel is an important measure for preventing water pressure diseases, and meanwhile, the water pressure data obtained by monitoring is also an important basis for formulating a disease treatment scheme.
The underground water has fluidity, and a waterproof and drainage system consisting of a circumferential drainage blind pipe, a longitudinal drainage blind pipe, non-woven fabrics and a waterproof plate is arranged at the back of the tunnel lining. Therefore, high water pressure behind the lining usually flows to the bottom of the tunnel inverted arch and is gathered, and then high water pressure is formed, and the tunnel inverted arch is usually a weak part of the whole ring lining, which is stressed by the structure, and is extremely easy to damage under the action of the high water pressure at the bottom of the inverted arch.
At present, most of tunnel lining water pressure monitoring technologies embed a water pressure gauge between a tunnel primary support and surrounding rocks, the embedding method needs to fix the water pressure gauge on the surrounding rocks or a primary support reinforcing mesh before spraying the primary support, and monitoring cables are gathered to two sides of side wall feet and led out uniformly. Therefore, the water pressure gauge is large in construction interference due to installation, damaged or not replaceable when the service life of the water pressure gauge is prolonged, and the monitoring cable is easily broken when primary support and secondary lining concrete are poured subsequently, so that the measuring point is failed and long-term monitoring is difficult. The individual embedding method is to punch holes or embed pipelines at the side wall part of the tunnel lining, embed a water pressure gauge into the pipelines and monitor the water pressure behind the lining, and the embedding method needs to penetrate the embedded pipelines through the waterproof layer of the tunnel, so that the waterproof system of the tunnel lining is damaged, and the risk of water leakage diseases of the tunnel lining is increased.
In addition, the existing tunnel lining water pressure monitoring system only has the function of monitoring water pressure data, and when the later stage tunnel water pressure disease is treated, the tunnel lining is required to be punched and drained or drilled and grouted, so that the secondary damage of the lining structure is caused.
In summary, the existing tunnel lining water pressure installation method mainly has the following problems:
1) when the water pressure gauge is buried between the primary support and the surrounding rock of the tunnel and the monitoring cable is led out from the side wall foot, the water pressure gauge is large in interference on construction due to installation, the water pressure gauge is damaged or cannot be replaced when the service life of the water pressure gauge is prolonged, and the monitoring cable is easily broken when the primary support and the secondary lining concrete are poured subsequently.
2) When holes are punched in the side wall of the tunnel lining or the pipeline is embedded, and the water pressure gauge is embedded into the pipeline, the embedded pipeline needs to penetrate through a tunnel waterproof layer, a waterproof system of the tunnel lining is damaged, and the occurrence risk of water leakage diseases of the tunnel lining can be increased.
3) The existing tunnel lining water pressure monitoring system only has the function of monitoring water pressure data, and can not provide convenience for treatment of later-stage tunnel water pressure diseases.
Disclosure of Invention
The invention aims to provide a maintainable tunnel lining water pressure gauge mounting device and a maintainable tunnel lining water pressure gauge mounting method, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a maintainable tunnel lining water pressure gauge mounting device comprises a central drainage ditch, wherein one side of the central drainage ditch is provided with a reserved groove, a reserved pipeline is arranged below the reserved groove, the reserved groove is a cubic box fixedly connected with the top end of the reserved pipeline, the reserved pipeline is arranged on an invert filling concrete layer, an invert lining concrete layer is arranged below the invert filling concrete layer, a track plate is arranged at the top of the invert filling concrete layer, the reserved pipeline is vertically arranged and extends into the inverted arch filling concrete layer and the inverted arch lining concrete layer, the top end of the reserved pipeline extends out of the reserved groove, a permeable stone layer and a fine sand layer are arranged inside the reserved pipeline, the top end of the reserved pipeline is in threaded connection with a pipeline sealing plug, a water pressure meter is arranged in the fine sand layer, and a collection instrument is fixedly mounted on the outer side of the inverted arch lining concrete layer.
A method for installing a maintainable tunnel lining water pressure gauge comprises the following steps:
the method comprises the following steps: firstly, binding inverted arch steel bars of a tunnel;
step two: after binding of tunnel inverted arch reinforcing steel bars is finished and before inverted arch concrete is poured, vertically binding or welding and fixing the reserved pipelines on an inverted arch reinforcing steel bar framework, wherein the tops of the reserved pipelines are higher than the bottoms of the reserved grooves, and the bottoms of the reserved pipelines are in contact with surrounding rocks at the bottom of the tunnel;
step three: sequentially filling a permeable stone layer and a fine sand layer with a certain height into the reserved pipeline, wherein the height of the fine sand layer is lower than the internal thread at the top of the reserved pipeline;
step four: fixing a cubic box above the reserved pipeline by using an iron wire, wherein the cubic box is used as a reserved groove reserved when the inverted arch is poured and concrete is filled;
step five: sequentially pouring an inverted arch lining concrete layer and an inverted arch filling concrete layer;
step six: and (3) plugging the water pressure gauge into the fine sand layer of the reserved pipeline, screwing the pipeline sealing plug, leading out a water pressure gauge cable from a reserved outlet hole on the pipeline sealing plug, and connecting the water pressure gauge cable with an acquisition instrument, thereby finally realizing the installation of the water pressure gauge.
Compared with the prior art, the invention has the beneficial effects that:
1) the water pressure gauge is directly installed in the reserved pipeline, the construction interference is small, the installation is simple and convenient, the replacement and the maintenance are convenient, and the monitoring cable is led out from the side part of the reserved groove cover plate and is not easy to break.
2) The reserved pipeline is located the lateral part of tunnel center escape canal, and the pipeline is buried underground in tunnel invert filling concrete and tunnel lining concrete, need not pierce through the tunnel waterproof layer, can not destroy the waterproof and drainage system in tunnel.
3) Because groundwater has mobility, the tunnel invert bottom gathers high water pressure at first usually, installs water pressure monitoring system in tunnel center escape canal lateral part, can directly monitor and obtain the high water pressure of tunnel invert bottom, takes emergent early warning measure in advance.
4) The reserved pipeline can have the function of outlet concurrently, if invert bottom water pressure is too big, can remove permeable rock layer, fine sand layer and the water pressure gauge in the reserved pipeline during water pressure disease punishment, and the groundwater of discharge invert bottom avoids high water pressure to destroy tunnel invert and track board.
Drawings
FIG. 1 is a monitoring profile arrangement of the present invention;
FIG. 2 is a schematic view of the mounting structure of the water pressure gauge of the present invention;
FIG. 3 is a schematic illustration of the reserve line fill of the present invention;
fig. 4 is a schematic view of the pipe sealing plug of the present invention.
Shown in the figure: 1-reserved groove, 2-reserved pipeline, 3-pipeline sealing plug, 4-permeable stone layer, 5-fine sand layer, 6-tunnel center drainage ditch, 7-water pressure gauge and 8-water pressure gauge cable.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the invention, a maintainable tunnel lining water pressure gauge installation device and an installation method thereof comprise a reserved groove 1, a reserved pipeline 2, a pipeline sealing plug 3, a permeable stone layer 4, a fine sand layer 5, a tunnel central drainage ditch 6, a water pressure gauge 7 and a water pressure gauge cable 8, wherein the reserved groove 1 is arranged on one side of the central drainage ditch 6, the reserved pipeline 2 is arranged below the reserved groove 1, the reserved groove 1 is a cubic box fixedly connected with the top end of the reserved pipeline 2, the reserved pipeline 2 is arranged on an inverted arch filling concrete layer, an inverted arch lining concrete layer is arranged below the inverted arch filling concrete layer, a track slab is arranged on the top of the inverted arch filling concrete layer, an inverted arch reinforcement cage is arranged on the inverted arch filling concrete layer, the reserved pipeline 2 is bound or welded on the inverted arch reinforcement cage, the reserved pipeline 2 is vertically arranged and extends into an inverted arch filling concrete layer and an inverted arch lining concrete layer, the top end of the reserved pipeline 2 extends out of the reserved groove 1, a permeable stone layer 4 and a fine sand layer 5 are arranged inside the reserved pipeline 2, the fine sand layer 5 is positioned right above the permeable stone layer 4, the top end of the reserved pipeline 2 is connected with a pipeline sealing plug 3 through a thread, the pipeline sealing plug 3 is provided with a wire outlet for the water pressure gauge cable 8 to extend out, the pipeline sealing plug 3 is provided with an external thread, the top end of the reserved pipeline 2 is provided with an internal thread matched with the external thread on the pipeline sealing plug 3, a water pressure gauge 7 is arranged in the fine sand layer 5, a collecting instrument is fixedly arranged on the outer side of the inverted arch lining concrete layer, the water pressure gauge 7 is electrically connected with one end of a water pressure gauge cable 8, and the other end of the water pressure gauge cable 8 is electrically connected with the acquisition instrument.
A mounting method of a maintainable tunnel lining water pressure gauge mounting device comprises the following steps:
the method comprises the following steps: firstly, binding inverted arch steel bars of a tunnel;
step two: after the binding of tunnel inverted arch reinforcing steel bars is finished and before inverted arch concrete is poured, vertically binding or welding and fixing the reserved pipeline 2 on an inverted arch reinforcing steel bar framework, wherein the top of the reserved pipeline 2 is higher than the bottom of the reserved groove 1, and the bottom of the reserved pipeline is in contact with surrounding rock at the bottom of the tunnel;
step three: sequentially filling a permeable stone layer 4 and a fine sand layer 5 with a certain height into the reserved pipeline 2, wherein the height of the fine sand layer 5 is lower than the internal thread at the top of the reserved pipeline 2;
step four: fixing a cubic box above the reserved pipeline 2 by using an iron wire, wherein the cubic box is used as a reserved groove 1 reserved when the inverted arch is poured and concrete is filled;
step five: sequentially pouring an inverted arch lining concrete layer and an inverted arch filling concrete layer;
step six: the water pressure gauge 7 is plugged into the fine sand layer 5 of the reserved pipeline 2, the pipeline sealing plug 3 is screwed up, and the water pressure gauge cable 8 is led out from a wire outlet reserved on the pipeline sealing plug 3 and is connected with the acquisition instrument, so that the water pressure gauge 7 is finally installed.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a tunnel lining water pressure gauge installation device that can maintain, includes central escape canal (6), its characterized in that: a reserved groove (1) is arranged on one side of the central drainage ditch (6), a reserved pipeline (2) is arranged below the reserved groove (1), the reserved groove (1) is a cubic box fixedly connected with the top end of the reserved pipeline (2), the reserved pipeline (2) is arranged on an inverted arch filling concrete layer, an inverted arch lining concrete layer is arranged below the inverted arch filling concrete layer, a track plate is arranged at the top of the inverted arch filling concrete layer, the reserved pipeline (2) is vertically arranged and extends into the inverted arch filling concrete layer and the inverted arch lining concrete layer, the top end of the reserved pipeline (2) extends out of the reserved groove (1), a permeable stone layer (4) and a fine sand layer (5) are arranged inside the reserved pipeline (2), the top end of the reserved pipeline (2) is in threaded connection with a pipeline (3), a water pressure gauge (7) is arranged in the fine sand layer (5), the collection instrument is fixedly installed on the outer side of the inverted arch lining concrete layer.
2. The serviceable tunnel lining water pressure gauge mounting device of claim 1, wherein: an inverted arch steel bar framework is arranged on the inverted arch filling concrete layer, and the reserved pipeline (2) is bound or welded and fixed on the inverted arch steel bar framework.
3. The serviceable tunnel lining water pressure gauge mounting device of claim 1, wherein: the fine sand layer (5) is positioned right above the water-permeable stone layer (4).
4. The serviceable tunnel lining water pressure gauge mounting device of claim 1, wherein: and a wire outlet hole for the water pressure gauge cable (8) to extend out is formed in the pipeline sealing plug (3).
5. The serviceable tunnel lining water pressure gauge mounting device of claim 1, wherein: an external thread is arranged on the pipeline sealing plug (3), and an internal thread matched with the external thread on the pipeline sealing plug (3) is arranged at the top end of the reserved pipeline (2).
6. The serviceable tunnel lining water pressure gauge mounting device of claim 1, wherein: the water pressure meter (7) is electrically connected with one end of a water pressure meter cable (8), and the other end of the water pressure meter cable (8) is electrically connected with the acquisition instrument.
7. A maintainable tunnel lining water pressure gauge mounting method is characterized in that: the installation method comprises the following steps:
the method comprises the following steps: firstly, binding inverted arch steel bars of a tunnel;
step two: after the binding of tunnel inverted arch reinforcing steel bars is finished and before inverted arch concrete is poured, vertically binding or welding and fixing the reserved pipeline (2) on an inverted arch reinforcing steel bar framework, wherein the top of the reserved pipeline (2) is higher than the bottom of the reserved groove (1), and the bottom of the reserved pipeline is contacted with surrounding rocks at the bottom of the tunnel;
step three: sequentially filling a permeable stone layer (4) and a fine sand layer (5) with a certain height into the reserved pipeline (2), wherein the height of the fine sand layer (5) is lower than the internal thread at the top of the reserved pipeline (2);
step four: a cubic box is fixed above the reserved pipeline (2) by using an iron wire and is used as a reserved groove (1) reserved when the inverted arch is poured and concrete is filled;
step five: sequentially pouring an inverted arch lining concrete layer and an inverted arch filling concrete layer;
step six: the water pressure meter (7) is plugged into the fine sand layer (5) of the reserved pipeline (2), the pipeline sealing plug (3) is screwed, and the water pressure meter cable (8) is led out from a wire outlet reserved on the pipeline sealing plug (3) and is connected with the acquisition instrument, so that the water pressure meter (7) is finally installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110154960.3A CN112796780A (en) | 2021-02-04 | 2021-02-04 | Maintainable tunnel lining water pressure gauge mounting device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110154960.3A CN112796780A (en) | 2021-02-04 | 2021-02-04 | Maintainable tunnel lining water pressure gauge mounting device and method |
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| CN112796780A true CN112796780A (en) | 2021-05-14 |
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| CN202110154960.3A Pending CN112796780A (en) | 2021-02-04 | 2021-02-04 | Maintainable tunnel lining water pressure gauge mounting device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165241A (en) * | 2021-12-06 | 2022-03-11 | 上海隧道工程有限公司 | Tunnel lining soil pressure detection system and construction method thereof |
| CN117894236A (en) * | 2024-03-14 | 2024-04-16 | 中南大学 | Simulation device and method for excavating and unloading preset tunnel model |
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| CN205719098U (en) * | 2016-06-14 | 2016-11-23 | 中铁二院工程集团有限责任公司 | A kind of maintainable tunnel-liner hydraulic pressure and system for monitoring displacement |
| CN206874310U (en) * | 2017-04-14 | 2018-01-12 | 长沙理工大学 | Be applicable to high-pressure rich water district tunnel decompression drainage device |
| CN109681240A (en) * | 2019-01-30 | 2019-04-26 | 中铁二院工程集团有限责任公司 | Tunnel-liner water pressure monitoring system osmometer mounting device and installation method |
| CN109736847A (en) * | 2019-02-14 | 2019-05-10 | 中铁十一局集团有限公司 | Primary concreting concrete inverted arch and its construction method |
| CN112253172A (en) * | 2020-10-16 | 2021-01-22 | 中铁第四勘察设计院集团有限公司 | Tunnel bottom lining structure with tie beam and construction method thereof |
-
2021
- 2021-02-04 CN CN202110154960.3A patent/CN112796780A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205719098U (en) * | 2016-06-14 | 2016-11-23 | 中铁二院工程集团有限责任公司 | A kind of maintainable tunnel-liner hydraulic pressure and system for monitoring displacement |
| CN206874310U (en) * | 2017-04-14 | 2018-01-12 | 长沙理工大学 | Be applicable to high-pressure rich water district tunnel decompression drainage device |
| CN109681240A (en) * | 2019-01-30 | 2019-04-26 | 中铁二院工程集团有限责任公司 | Tunnel-liner water pressure monitoring system osmometer mounting device and installation method |
| CN109736847A (en) * | 2019-02-14 | 2019-05-10 | 中铁十一局集团有限公司 | Primary concreting concrete inverted arch and its construction method |
| CN112253172A (en) * | 2020-10-16 | 2021-01-22 | 中铁第四勘察设计院集团有限公司 | Tunnel bottom lining structure with tie beam and construction method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165241A (en) * | 2021-12-06 | 2022-03-11 | 上海隧道工程有限公司 | Tunnel lining soil pressure detection system and construction method thereof |
| CN117894236A (en) * | 2024-03-14 | 2024-04-16 | 中南大学 | Simulation device and method for excavating and unloading preset tunnel model |
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