CN113719304A - Method for treating water leakage disease of tunnel by using rigid sleeve valve pipe - Google Patents
Method for treating water leakage disease of tunnel by using rigid sleeve valve pipe Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 35
- 201000010099 disease Diseases 0.000 title claims abstract description 28
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 131
- 239000010959 steel Substances 0.000 claims abstract description 131
- 239000004567 concrete Substances 0.000 claims abstract description 62
- 239000002689 soil Substances 0.000 claims abstract description 41
- 238000010276 construction Methods 0.000 claims abstract description 27
- 238000011065 in-situ storage Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 4
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- 238000011161 development Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000003822 epoxy resin Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical class C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
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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
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Abstract
The invention relates to a method for treating water leakage diseases of a tunnel by using a rigid sleeve valve pipe, which comprises the following steps: in the construction stage of the tunnel, an embedded steel pipe is arranged in the concrete tunnel structure body, and the embedded steel pipe and the concrete tunnel structure body are cast in situ integrally; the embedded steel pipes extend out of the rock-soil body outside the concrete tunnel structure body, and holes are distributed on the pipe walls of the embedded steel pipes in the rock-soil body; when the tunnel has the water leakage disease, the high-pressure grouting equipment is utilized to perform grouting on the embedded steel pipe near the water leakage disease, so that the water leakage disease is treated. By pre-embedding the steel pipes in the concrete tunnel structure body and using the sleeve valve pipes to carry out fixed-point treatment and repeated treatment according to the water leakage condition inside the tunnel in the later period, compared with the existing tunnel water leakage treatment method, the method has the characteristics of low cost, small construction influence, high speed, repeated treatment and the like.
Description
Technical Field
The invention relates to the technical field of tunnel disease treatment, in particular to a method for treating water leakage diseases of tunnels by using rigid sleeve valve pipes.
Background
With the continuous and stable development of economy in China, the process of urbanization is accelerated continuously, and the construction of infrastructures such as traffic, water conservancy and energy is carried out in large quantity. At present, China is the country with the most tunnels and underground engineering, the fastest development speed and the most complex geological and structural forms in the world.
As a large number of tunnels are put into operation, more and more tunnels have water leakage during the tunnel operation period. According to the investigation of 7492 railway tunnel diseases in 2016 of the iron department institute, 70% of tunnels have water leakage in different degrees. Among them, water leakage accounts for 30% of the total. The design service life of the tunnel is required to be 100 years, and along with the annual operation of the tunnel, the waterproof effect of various waterproof materials and construction methods in the tunnel faces long-term challenges.
The water leakage treatment of the operation tunnel mainly comprises in-tunnel treatment and out-of-tunnel surface reinforcement. The treatment of water leakage in the tunnel mainly takes the steps of slotting or drilling the water leakage part, and filling or injecting various plugging agents under high pressure to improve the waterproof capability of the tunnel structure. The ground surface reinforcement is to inject various mixed materials taking cement paste as main components into rock and soil mass around the tunnel through various construction methods to reinforce the stratum so as to reduce the permeability of the surrounding soil mass and improve the waterproof capability of the tunnel.
However, the existing municipal, road and railway tunnels are mostly formed by casting a plurality of reinforced concrete structures in sections. The tunnel structure's concrete intensity is high, and density is big and the densely covered reinforcing bar, and there is very big difficulty in tunnel fluting or drilling, and the condition that appears secondary infiltration after the tunnel percolating water disease is administered takes place occasionally, and the tunnel structure after administering through fluting many times or drilling has densely covered "pinhole", if appear leaking once more then must lead to handling the degree of difficulty and increase. Meanwhile, the construction period of the ground surface reinforcement of the tunnel is long, and the cost is huge. In addition, the tunnel is often a traffic main road, and higher examination is provided for the construction work of water leakage in the tunnel in terms of working space and working time.
Disclosure of Invention
Technical problem to be solved
In view of the defects and shortcomings of the prior art, the invention provides a method for treating water leakage diseases of a tunnel by using a rigid sleeve valve pipe, which comprises the steps of pre-embedding steel pipes in the tunnel, and grouting the pre-embedded steel pipes by using high-pressure equipment during water leakage disease treatment in the later period so as to treat the water leakage parts of the tunnel at fixed points and repeatedly treat the water leakage parts, thereby solving the problems of high difficulty, long time consumption, high cost, poor treatment flexibility and the like of the water leakage treatment in the existing tunnel.
The technical problem is solved.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the invention provides a method for treating water leakage diseases of a tunnel by using a rigid sleeve valve pipe, which comprises the following steps: in the construction stage of the tunnel, an embedded steel pipe is arranged in the concrete tunnel structure body, and the embedded steel pipe and the concrete tunnel structure body are cast in situ integrally; the embedded steel pipes extend out of the rock-soil body outside the concrete tunnel structure body, and holes are distributed on the pipe walls of the embedded steel pipes in the rock-soil body;
when the tunnel has the water leakage disease, the high-pressure grouting equipment is utilized to perform grouting on the embedded steel pipe near the water leakage disease, so that the water leakage disease is treated.
The number of the holes is multiple, the holes are distributed in the circumferential direction of the pipe wall or only distributed in a concentrated mode on one side (namely distributed along the length direction on one side of the embedded steel pipe), and the side faces to the water seepage damage part.
According to the preferred embodiment of the present invention, the method further comprises: and in the construction stage of the tunnel, prejudging the potential water leakage hazard position according to investigation, design and construction information, and arranging the embedded steel pipe near the potential water leakage hazard position. More preferably, the embedded steel pipes are arranged on the periphery or two sides of the leakage water hidden trouble part.
According to the preferred embodiment of the present invention, the potential water leakage hazard includes, but is not limited to: water content rich sections, construction joints, deformation joints.
According to the preferred embodiment of the invention, one end of the embedded steel pipe extending to the rock-soil body outside the concrete tunnel structure body is a closed end, and the other end of the embedded steel pipe is an open end. The closed end of the embedded steel pipe can be closed by welding a steel plate at the bottom of the steel pipe or flatly welding the bottom of the steel pipe.
According to the preferred embodiment of the invention, the open end of the embedded steel pipe is positioned at the inner side of the tunnel; the open end is provided with a detachable plug. Preferably, the open end is threaded (forming an external thread) and the plug is removably coupled to the open end.
According to the preferred embodiment of the invention, the embedded steel pipes are arranged on the top, the side wall or the bottom of the concrete tunnel structure.
Specifically, when the embedded steel pipe is arranged on the top or the side wall of the concrete tunnel structure, the open end of the embedded steel pipe protrudes out of the structural surface of the concrete tunnel structure, and the plug is detachably combined with the open end.
The embedded steel pipe is arranged on the top or the side wall of the concrete tunnel structure body, and under the condition of not interfering other functions of the tunnel, the embedded steel pipe and the plug thereof can directly extend out of the structural surface without treatment for saving cost.
When the embedded steel pipe is arranged at the bottom of the concrete tunnel structure body, the opening end of the embedded steel pipe protrudes into a counter bore of a tunnel ground, and the plug is arranged in the counter bore and detachably combined with the opening end; the cover plate is covered on the counter bore, and the surface of the cover plate is level with the ground of the tunnel, so that the flatness of the ground of the tunnel can be ensured, and the vehicle passing is not influenced.
According to the preferred embodiment of the invention, the water leakage hidden trouble part is a linear water leakage hidden trouble area, and the embedded steel pipes are obliquely and crossly embedded at two sides of the linear water leakage hidden trouble area; the embedded steel pipe on one side obliquely penetrates through the concrete tunnel structure body to enter a rock-soil body outside the concrete tunnel structure body, and the tail end of the embedded steel pipe entering the rock-soil body is correspondingly positioned on the other side of the linear water leakage hidden danger area. The linear water leakage hidden trouble area is a linear deformation joint or a construction joint, and can also be a curved irregular crack. Through the both sides slope cross arrangement in line type percolating water hidden danger district pre-buried steel pipe, after the pre-buried steel pipe slip casting to both sides, the thick liquid is to the cross diffusion in the outside ground body in line type percolating water hidden danger district, reaches closely knit ground body better, fills the purpose such as gap, shutoff stagnant water, slump.
According to a preferred embodiment of the invention, the hidden danger of water leakage is a surface-type hidden danger of water leakage, the embedded steel pipes are obliquely arranged around the hidden danger of water leakage, and one end of each embedded steel pipe extending out of the concrete tunnel structure body is inclined towards the center direction close to the hidden danger of water leakage.
Preferably, the water leakage hidden danger part is a deformation joint, a plurality of embedded steel pipes are arranged on two sides of the deformation joint, and the embedded steel pipes are obliquely and crosswise embedded on two sides of the deformation joint; the embedded steel pipe on one side obliquely penetrates through the concrete tunnel structure body to enter a rock-soil body outside the concrete tunnel structure body, and the tail end of the embedded steel pipe entering the rock-soil body is correspondingly positioned on the other side of the deformation joint; the distance between two adjacent embedded steel pipes on each side is 30-50 cm.
According to a preferred embodiment of the present invention, before the cast-in-place of the embedded steel pipe and the concrete tunnel structure as a whole, a waterproof material is wrapped around the embedded steel pipe.
Preferably, the waterproof material is a flexible waterproof roll. The waterproof material is wound on a contact interface between the embedded steel pipe and the concrete tunnel structure body. Therefore, the water seepage prevention effect of the periphery of the embedded steel pipe (between the embedded steel pipe and the concrete) can be ensured.
According to the preferred embodiment of the invention, the inner diameter of the embedded steel pipe is 50 mm.
According to the preferred embodiment of the invention, when the tunnel has water leakage, the sleeve valve pipe grouting process is used for grouting the pre-buried steel pipe near the water leakage, and the grouting comprises sectional grouting and/or different material grouting.
According to the preferred embodiment of the invention, the sleeve valve tube grouting process comprises the following steps:
step 1: the special grouting device for the sleeve valve pipe extends to the position, close to the closed end, of the embedded steel pipe (enters a rock-soil body), grouting materials mainly comprising cement paste are injected at high pressure, the rock-soil body is compactly reinforced, and the permeability coefficient of the rock-soil body is reduced;
step 2: after the grouting material injected in the step 1 is solidified, moving the special grouting device for the sleeve valve pipe to enable the position far away from the closed end of the embedded steel pipe (to be away from a rock-soil body), and then injecting waterproof flexible grouting materials (such as acrylate grouting materials with better waterproof performance, high-permeability epoxy grouting agents, modified epoxy resin and other flexible materials);
and step 3: and lifting the special grouting device for the sleeve valve pipe from the embedded steel pipe, and covering the plug on the embedded steel pipe. And then, when water leakage diseases or secondary water seepage occurs in the operation period of the tunnel, repeating the steps.
(III) advantageous effects
In view of the problems of great difficulty, long time consumption, high cost and the like of the existing treatment measures for water leakage in the tunnel, the invention provides a method for pre-embedding steel pipes in the tunnel, and the pre-embedded steel pipes are utilized in the later stage to carry out grouting on the pre-embedded steel pipes through high-pressure grouting equipment, so that fixed-point treatment and repeated treatment on the water leakage position of the tunnel are realized. Preferably, when the tunnel is constructed, the pre-buried steel pipes are arranged near the potential water leakage hazard part of the tunnel, when the tunnel has water leakage damage, temporary slotting or drilling construction is not needed, the characteristics of repeatable grouting and grouting material selection and the like of the sleeve valve pipe grouting technology are fully exerted according to needs, the method has the advantages of simple construction, strong operability, low treatment cost and convenience in repeated treatment, and flexible treatment can be carried out on different water leakage quantities.
Drawings
Fig. 1 is a schematic view of setting pre-buried steel pipes in the construction process of building a tunnel.
Fig. 2 is a schematic view of an open end and a structural surface of an embedded steel pipe provided at the bottom of a concrete tunnel structure.
Fig. 3 is an effect diagram of arranging the pre-buried steel pipes at both sides of the deformation joint of the concrete tunnel structure after the tunnel construction is completed.
FIG. 4 is a schematic view of the embedded steel pipes embedded at two sides of the deformation joint in an oblique crossing manner.
Detailed Description
The invention belongs to a method for treating diseases by water leakage at a deformation joint, a construction joint or a water-rich section and other parts with water leakage hidden troubles in tunnel engineering, and particularly relates to a method for treating diseases by water leakage at the parts with water leakage hidden troubles in the process of pouring a tunnel concrete structure body, wherein a plurality of steel pipes are embedded simultaneously (the steel pipes are embedded at the periphery or two sides of the parts with water leakage hidden troubles), one ends of the embedded steel pipes protrude out of the structural surface of the concrete tunnel structure body, and the other ends of the embedded steel pipes penetrate through the tunnel concrete structure body and extend into a rock-soil body outside the tunnel concrete structure body. One surface of the protruding structure is provided with an opening end which can be used for grouting; one end extending into the rock-soil body is a closed end, a plurality of holes are distributed on the pipe wall positioned in the rock-soil body, and slurry is dispersed and permeated into the rock-soil body through the holes, so that the rock-soil body is compacted, gaps are filled, water is blocked, and the like. Specifically, during grouting, a grouting device special for the sleeve valve pipe is adopted for grouting, and sectional grouting and/or grouting with different materials are performed according to the water leakage condition. By pre-embedding the steel pipes in the concrete tunnel structure body and using the sleeve valve pipes to carry out fixed-point treatment and repeated treatment according to the water leakage condition inside the tunnel in the later period, compared with the existing tunnel water leakage treatment method, the method has the characteristics of low cost, small construction influence, high speed, repeated treatment and the like.
In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, in which the potential site of water leakage is a deformation joint between two sections of concrete casting.
As shown in fig. 1-2 and 4, the concrete tunnel structure 5 is formed by sectional casting. When one section of the concrete tunnel structure body 5 is poured, a plurality of embedded steel pipes 1 are obliquely embedded at the edge of the concrete tunnel structure body 5 (after the concrete tunnel structure body is combined with the next section of the concrete pouring body, the part is the side of the deformation joint A), so that the embedded steel pipes and the concrete tunnel structure body 5 are integrally cast in place. The embedded steel pipe 1 comprises two parts, wherein one part is poured with the concrete tunnel structure body 5, and the end part of the embedded steel pipe is an open end 11 and is positioned in the tunnel, so that a worker can open the embedded steel pipe and perform grouting; the other part extends into the rock-soil mass 6 outside the concrete tunnel structure 5 and ends with a closed end 12. Wherein, the pipe wall of the pipe body that pre-buried steel pipe 1 stretches to in the ground body 6 is equipped with a plurality of holes, and these holes can supply the thick liquids to permeate to in the ground body 6 of outside. The open end 11 is provided with a removable plug 2. For example, the open end 11 is threaded and the plug 2 is threadedly engaged with the open end 11. The closed end 12 of the embedded steel pipe 1 can be closed by welding a steel plate at the bottom of the steel pipe or flatly welding the bottom of the steel pipe. The inner diameter of the steel tube was about 50 cm.
As shown in fig. 1, the embedded steel pipes 1 are disposed on the top, side walls, or bottom of the concrete tunnel structure 5. When the embedded steel pipe 1 is arranged on the top or side wall of the concrete tunnel structure, the open end 11 thereof protrudes out of the structural surface of the concrete tunnel structure 5. At this time, under the condition of not interfering other functions of the tunnel, in order to save cost, the embedded steel pipe 1 and the plug 2 thereof can directly extend out of the structural surface without processing. As shown in fig. 2, when the embedded steel pipe 1 is disposed at the bottom of the concrete tunnel structure 5, the open end 11 protrudes into a counterbore 51 of the tunnel floor, and the plug 2 is disposed in the counterbore 51 and detachably coupled to the open end 11 of the embedded steel pipe 1. The counter bore 51 is covered with a cover plate 4, and the surface of the cover plate 4 is kept level with the tunnel floor, so that the flatness of the tunnel floor can be ensured without influencing the vehicle passing.
And pouring another section of concrete pouring body according to the mode. As shown in fig. 3, a deformation joint a is formed between the poured concrete and the previous concrete cast. The deformation joint A is a potential water leakage hazard part. Two rows of embedded steel pipes 1 are arranged on two sides of the deformation joint A, and the embedded steel pipes 1 are obliquely and crossly arranged on two sides of the deformation joint A. As shown in fig. 4, the embedded steel pipe 1 on one side obliquely passes through the concrete tunnel structure 5 and enters the external rock-soil mass 6, and the end (closed end 12) entering the rock-soil mass 6 is correspondingly positioned on the other side of the deformation joint a. The distance between two adjacent embedded steel pipes 1 on each side is 30-50 cm. In the embodiment, through the mode of obliquely and alternately arranging the embedded steel pipes 1 at the two sides of the deformation joint A, after the embedded steel pipes 1 at the two sides are respectively grouted, slurry is crossly diffused in the rock-soil body 6 outside the deformation joint A (the slurry is jointly filled into the rock-soil body 6 just outside the deformation joint A), so that the rock-soil body 6 aligned with the deformation joint A is better covered and filled, and the rock-soil body 6 at the position plays roles in densification, gap filling, blocking, water stopping and the like.
It should be noted that, in this embodiment, the deformation joint a is a linear leakage water hidden trouble area, and similarly, a plurality of pre-buried steel pipes 1 may also be obliquely and cross pre-buried on both sides of the construction joint. In other embodiments, the water leakage hidden trouble part may also be a curved irregular crack, but a plurality of pre-buried steel pipes 1 can be pre-buried obliquely and crosswise according to the above manner, so that the rock and soil mass 6 outside the crack can be better compacted and blocked and water-stopping effects can be achieved. In addition, for some non-linear leakage water hidden trouble areas, such as circular or quadrilateral (i.e. planar) leakage water hidden trouble areas, several inclined embedded steel pipes 1 can be arranged around the leakage water hidden trouble area, and the closed ends 12 of the embedded steel pipes 1 are inclined towards the direction close to the center of the leakage water hidden trouble area. Therefore, when grouting is carried out on each embedded steel pipe 1, slurry coming out of each embedded steel pipe 1 permeates into rock and soil bodies outside the water leakage hidden danger area and diffuses towards the direction of the central line of the water leakage hidden danger area, and therefore the more reliable filling and plugging effect can be achieved.
Wherein, before the embedded steel pipe 1 and the concrete tunnel structure 5 are integrally cast in situ, waterproof materials can be wrapped outside the embedded steel pipe. The waterproofing material is, for example, a flexible waterproofing roll. After pouring, the waterproof material is wound on the contact interface of the embedded steel pipe 1 and the concrete tunnel structure body 5, so that the water seepage prevention effect of the periphery of the embedded steel pipe 1 (between the embedded steel pipe and the concrete) is effectively ensured.
When water leakage diseases occur in the tunnel operation period, the treatment process is as follows:
(1) the end cap 2 of the open end 11 of the embedded steel pipe 1 is opened, the special grouting device for the sleeve valve pipe is used for extending the position (entering the range of the soil body 6 outside the concrete tunnel structure body 5) of the embedded steel pipe 1 close to the closed end 12, the grouting material mainly containing cement paste is injected under high pressure, dense reinforcement is carried out on the soil body, the permeability coefficient of the soil body is reduced, the capability of resisting water and soil pressure is improved, and therefore the waterproof capability near water leakage is improved.
(2) And (2) after the grouting material injected in the step (1) is solidified, pulling the special grouting device for the sleeve valve pipe to enable the special grouting device for the sleeve valve pipe to be separated from the rock-soil body 6, and injecting waterproof flexible grouting materials, such as one or more of acrylate grouting materials with better waterproof performance, high-permeability epoxy grouting agents, modified epoxy resins and other flexible materials. The material has good waterproof performance, is flexible after being solidified, can be filled in deformation joints and does not influence the functions of the deformation joints.
(3) And taking out the special grouting device for the sleeve valve pipe from the embedded steel pipe 1, and covering the end cap 2 on the end part of the embedded steel pipe 1. And then, when water leakage diseases or secondary water seepage occurs in the operation period of the tunnel, repeating the steps.
Therefore, by using the method of the invention, when the tunnel has the water leakage disease, the sleeve valve pipe grouting process is used for grouting the embedded steel pipe 1 near the water leakage disease, the grouting comprises sectional grouting and/or grouting with different materials, and the fixed-point treatment, the repeated treatment and the flexible treatment by injecting different materials can be realized according to the water leakage disease.
In the construction stage of the tunnel, the arrangement position of the embedded steel pipe 1 is not limited to the deformation joint, and can be near any pre-judged water leakage hidden trouble position. Specifically, in the construction stage of the tunnel, the water leakage hidden danger position is pre-judged according to investigation, design and construction information, and the embedded steel pipe 1 is arranged near the water leakage hidden danger position, including being embedded at the periphery or two sides of the water leakage hidden danger position. Wherein, the water leakage hidden trouble position includes but not limited to: water content rich sections, construction joints, deformation joints, etc.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for treating water leakage diseases of tunnels by using rigid sleeve valve pipes is characterized by comprising the following steps: in the construction stage of the tunnel, an embedded steel pipe is arranged in the concrete tunnel structure body, and the embedded steel pipe and the concrete tunnel structure body are cast in situ integrally; the embedded steel pipes extend out of the rock-soil body outside the concrete tunnel structure body, and holes are distributed on the pipe walls of the embedded steel pipes in the rock-soil body;
when the tunnel has the water leakage disease, the high-pressure grouting equipment is utilized to perform grouting on the embedded steel pipe near the water leakage disease, so that the water leakage disease is treated.
2. The method of claim 1, further comprising: and in the construction stage of the tunnel, prejudging the potential water leakage hazard position according to investigation, design and construction information, and arranging the embedded steel pipe near the potential water leakage hazard position.
3. The method of claim 2, wherein the water leakage potential sites include, but are not limited to: water content rich sections, construction joints, deformation joints.
4. The method as claimed in claim 1, wherein one end of the pre-buried steel pipe extending into the rock-soil mass outside the concrete tunnel structure is a closed end, and the other end is an open end.
5. The method of claim 4, wherein the open ends of the embedded steel pipes are positioned on the inner side of the tunnel; the open end is provided with a detachable plug.
6. The method according to claim 5, wherein the embedded steel pipes are arranged at the top, side wall or bottom of the concrete tunnel structure;
when the embedded steel pipe is arranged at the top or the side wall of the concrete tunnel structure body, the opening end of the embedded steel pipe protrudes out of the structural surface of the concrete tunnel structure body, and the plug is detachably combined with the opening end;
when the embedded steel pipe is arranged at the bottom of the concrete tunnel structure body, the opening end of the embedded steel pipe protrudes into a counter bore of a tunnel ground, and the plug is arranged in the counter bore and detachably combined with the opening end; and a cover plate is covered on the counter bore, and the surface of the cover plate is level with the ground of the tunnel.
7. The method as claimed in claim 1, wherein the water leakage hidden trouble part is a linear water leakage hidden trouble area, and the pre-buried steel pipes are obliquely and crossly pre-buried at two sides of the linear water leakage hidden trouble area; the embedded steel pipe on one side obliquely penetrates through the concrete tunnel structure body to enter a rock-soil body outside the concrete tunnel structure body, and the tail end of the embedded steel pipe entering the rock-soil body is correspondingly positioned on the other side of the linear water leakage hidden danger area;
or: the hidden danger of percolating water position is face type percolating water hidden danger district, pre-buried steel pipe inclines to setting up around face type percolating water hidden danger district, just the one end that stretches out to the concrete tunnel structure outside of each pre-buried steel pipe all inclines to the direction that is close to face type percolating water hidden danger district center.
8. The method as claimed in claim 1, wherein a waterproof material is wrapped around the outside of the pre-buried steel pipe before the pre-buried steel pipe is integrally cast in place with the concrete tunnel structure.
9. The method as claimed in claim 1, wherein when the tunnel has water leakage, the pre-buried steel pipe near the water leakage is grouted by using a sleeve valve pipe grouting process, wherein the grouting comprises sectional grouting and/or different material grouting.
10. The method of claim 9, wherein the sleeve valve tube grouting process comprises the steps of:
step 1: the special grouting device for the sleeve valve pipe is used for extending to the position, close to the closed end, of the embedded steel pipe, and grouting materials mainly comprising cement paste are injected at high pressure, so that the rock-soil body is compactly reinforced, and the permeability coefficient of the rock-soil body is reduced;
step 2: after the grouting material injected in the step 1 is solidified, moving a special grouting device for the sleeve valve pipe to enable the position far away from the closed end of the embedded steel pipe, and then injecting waterproof flexible grouting material;
and step 3: and lifting the special grouting device for the sleeve valve pipe from the embedded steel pipe, and covering the plug on the embedded steel pipe.
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| CN202110955562.1A CN113719304A (en) | 2021-08-19 | 2021-08-19 | Method for treating water leakage disease of tunnel by using rigid sleeve valve pipe |
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| CN202110955562.1A CN113719304A (en) | 2021-08-19 | 2021-08-19 | Method for treating water leakage disease of tunnel by using rigid sleeve valve pipe |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JP2006161438A (en) * | 2004-12-08 | 2006-06-22 | Ntt Infranet Co Ltd | Cut-off method and water transmission method |
| CN101737063A (en) * | 2009-11-16 | 2010-06-16 | 西安理工大学 | Ground fissure tunnel asphalt concrete composite lining and supporting method thereof |
| CN101787892A (en) * | 2010-03-17 | 2010-07-28 | 中铁隧道勘测设计院有限公司 | Method for constructing maintainable tunnel waterproof system |
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