CN110805008A - Construction method of drainage structure of expansion joint of water delivery culvert pipe joint - Google Patents

Construction method of drainage structure of expansion joint of water delivery culvert pipe joint Download PDF

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Publication number
CN110805008A
CN110805008A CN201911060530.4A CN201911060530A CN110805008A CN 110805008 A CN110805008 A CN 110805008A CN 201911060530 A CN201911060530 A CN 201911060530A CN 110805008 A CN110805008 A CN 110805008A
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CN
China
Prior art keywords
joint
expansion joint
water
filler
way valve
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Pending
Application number
CN201911060530.4A
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Chinese (zh)
Inventor
高德军
赵国良
杨进新
郑文利
李庆军
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Beijing Jinhe Dehui Technology Development Co Ltd
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Beijing Jinhe Dehui Technology Development Co Ltd
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Application filed by Beijing Jinhe Dehui Technology Development Co Ltd filed Critical Beijing Jinhe Dehui Technology Development Co Ltd
Priority to CN201911060530.4A priority Critical patent/CN110805008A/en
Publication of CN110805008A publication Critical patent/CN110805008A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
    • E02B9/02—Water-ways
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Sewage (AREA)

Abstract

The invention provides a construction method of a hydrophobic structure of an expansion joint of a pipe joint of a water delivery culvert, which is characterized in that a water stop and a filler are arranged at the position of the expansion joint; a plurality of hoses are arranged on the inner side of the filler along the circumferential direction, a plurality of water inlet holes which are arranged at intervals along the length direction are preset on the side wall of each hose, and the hoses are wound by geotextile in advance; two adjacent hoses are connected by two working ports of a tee joint, so that all the hoses are connected into a ring; the last working port of the tee joint extends towards the radial inner side of the expansion joint and is connected with a one-way valve, and the water outlet end of the one-way valve is communicated with the inside of the pipe joint; and the expansion joint at the radial inner side of the tee joint is continuously filled with the filler and fixed. When the invention is applied to the water delivery tunnel rich in pressurized underground water, if the outside of the pipe joint is subjected to the pressure of the underground water, the underground water enters the hose through the water inlet hole, then is guided into the one-way valve through the tee joint and is discharged into the pipe joint, so that the water pressure outside the pipe joint is dredged, and the water-stopping filler is prevented from being damaged.

Description

Construction method of drainage structure of expansion joint of water delivery culvert pipe joint
Technical Field
The invention relates to a construction method of a hydrophobic structure of an expansion joint of a pipe joint of a water delivery culvert.
Background
The expansion joint of the pipe joint of the water delivery tunnel is provided with the water-stopping filler, so that the water in the pipe joint is prevented from leaking outside the pipe joint from the outside of the expansion joint, and the water-stopping filler generally only has a one-way waterproof function.
In the water delivery tunnel rich in pressure underground water, under the pressure of the underground water outside the pipe joint, the underground water can permeate into the pipe joint through the expansion joint of the pipe joint, so that the water-stopping filler in the expansion joint is damaged, an inner and outer permeation channel of the pipeline is formed, and a large amount of water in the pipeline leaks out.
At present, to the above-mentioned circumstances, the mode that the intensity of reinforcing stagnant water filler, firmness are generally adopted to the technical staff in the field solves the problem, nevertheless because the width of expansion joint position can stretch out and draw back the change for intensity, elasticity and firmness can not be compromise to stagnant water filler, therefore the problem of seepage still can not thoroughly be solved.
Disclosure of Invention
In order to solve the problem that the filler is damaged, the invention provides a construction method of a hydrophobic structure of an expansion joint of a water delivery culvert pipe joint, which achieves the purposes of protecting the water-stop filler in the expansion joint and keeping the integrity and the compactness of the water-stop filler by defibering the external water pressure of the expansion joint.
In order to achieve the purpose, the invention adopts the technical scheme that:
a construction method of a hydrophobic structure of an expansion joint of a water delivery culvert pipe section is characterized by comprising the following steps:
arranging a water stop and a filler at the position of the expansion joint;
a plurality of hoses are arranged on the inner side of the filler along the circumferential direction, a plurality of water inlet holes which are arranged at intervals along the length direction are preset on the side wall of each hose, and the hoses are wound by geotextile in advance;
two adjacent hoses are connected by two working ports of a tee joint, so that all the hoses are connected into a ring;
the last working port of the tee joint extends towards the radial inner side of the expansion joint and is connected with the water inlet end of the one-way valve, and the water outlet end of the one-way valve is communicated with the inside of the pipe joint;
and filling and fixing the filler continuously in the expansion joint at the radial inner side of the tee joint.
The construction method of the hydrophobic structure of the expansion joint of the water delivery culvert pipe section comprises the following steps: filling filler in the expansion joint on the radial inner side of the tee joint continuously to a position 4-6 cm away from the inner wall of the pipe joint; then continuously filling rapid hardening cement with the depth of 2-3 cm in the expansion joint; and finally, caulking by using polyurethane with the depth of 2-3 cm.
The construction method of the hydrophobic structure of the expansion joint of the water delivery culvert pipe section comprises the following steps: and the inner wall of the pipe joint is also provided with a waterproof layer made of acrylic polymer cement paint.
The construction method of the hydrophobic structure of the expansion joint of the water delivery culvert pipe section comprises the following steps: the waterproof layer is gradually thickened at the position close to the water outlet end of the one-way valve and extends inwards along the side wall of the one-way valve.
The construction method of the hydrophobic structure of the expansion joint of the water delivery culvert pipe section comprises the following steps: the filler is asphalt hemp.
The construction method of the hydrophobic structure of the expansion joint of the water delivery culvert pipe section comprises the following steps: the geotextile is wound on the hose in a single layer of 100g/m2The staple fiber needle-punched non-woven geotextile.
The construction method of the hydrophobic structure of the expansion joint of the water delivery culvert pipe section comprises the following steps: and the water outlet end of the one-way valve exceeds the inner wall of the pipe joint by 0.5-1.5 cm.
When the hydrophobic structure of the expansion joint of the water delivery culvert pipe section is applied to a water delivery tunnel rich in pressurized underground water, if the outside of the pipe section is subjected to the pressure of the underground water, the underground water enters the hose through the water inlet hole, is guided into the one-way valve through the tee joint and is discharged into the pipe section, so that the water pressure outside the pipe section is drained, and the water filler is prevented from being damaged; the water in the pipe joint can not enter the hose through the one-way valve, so that the problem of water leakage in the pipe joint is solved.
Drawings
Fig. 1 is a schematic view of the overall structure of a hydrophobic apparatus provided in the present invention.
FIG. 2 is an enlarged view of the hydrophobic means provided by the present invention in the three-way, one-way valve position.
Fig. 3 is a schematic structural view of the hydrophobic device provided by the present invention installed in an expansion joint.
Description of reference numerals: a reinforced concrete liner 1; a reinforced concrete secondary lining 2; an expansion joint 3; a tee joint 4; a check valve 5; a hose 6; an inlet hole 7; geotextile 8; a sleeve 9; a water stop 10; a filler 11; 12, quick-hardening cement; polyurethane caulking 13; and a waterproof layer 14.
Detailed Description
Some specific embodiments of the invention will be described in detail below, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
As shown in fig. 1 and 2, the water drainage structure of the expansion joint of the pipe joint of the water delivery culvert provided by the invention has the advantages that the water delivery culvert is provided with a tubular reinforced concrete liner 1 arranged on the peripheral side and used for bearing the earth pressure; a plurality of tubular reinforced concrete secondary linings 2 (namely the pipe joints) which are connected end to end are arranged in the reinforced concrete primary lining 1 and are used for water delivery; an expansion joint 3 (shown in figure 3) is formed at the connecting position of the reinforced concrete two linings 2;
at least four tee joints 4 are arranged at different circumferential positions of the expansion joint 3, the working ports of the tee joints 4 facing the radial inner side of the expansion joint 3 are connected with water inlet ends of check valves 5, the remaining two working ports of the tee joints 4 are sequentially connected through hoses 6 to form a ring shape, a plurality of water inlet holes 7 are formed in the side wall of each hose 6 at intervals along the length direction, the water outlet ends of the check valves 5 extend into the reinforced concrete secondary lining 2 along the radial direction, only water in the tee joints 4 is allowed to flow into the pipe joints, and water in the pipe joints is not allowed to flow into the tee joints 4.
As shown in figure 2, the invention is an enlarged view of the position of a three-way 4 and a one-way valve 5 of the drainage device, and in order to prevent fine stones and debris from entering a water inlet hole 7 to cause blockage, a single layer of 100g/m is wound outside a hose 62The short fiber needle-punched non-woven geotextile 8; and the tee joint 4 faces the working opening at the radial inner side of the expansion joint 3The water inlet end of the one-way valve 5 is connected with the sleeve 9.
Referring to fig. 3, which is a schematic structural view of the drainage device installed in the expansion joint 3 according to the present invention, it can be seen from fig. 3 and fig. 1 that a (red copper) water stop 10 and a filler 11 (preferably asphalt hemp) are disposed at the position of the expansion joint 3, which is a common technical means, then a plurality of hoses 6 are disposed in the filler 11 along the circumferential direction of the expansion joint 3, a plurality of water inlet holes 7 are disposed on the side wall of the hoses 6 at intervals along the length direction, and the water inlet holes are 100g/m in a single layer2Winding the short fiber needle-punched non-woven geotextile 8; two adjacent hoses 6 are connected by two working ports of a tee joint 4, so that all the hoses 6 are connected into a ring; the last working hole of the tee joint 4 extends towards the radial inner side of the expansion joint 3 and is connected with a water inlet end of a one-way valve 5, and the water outlet end of the one-way valve 5 exceeds the inner wall of the reinforced concrete lining 1 by a certain length (generally 0.5-1.5 cm); filling filler 11 in the expansion joint 3 at the radial inner side of the tee joint 4 to a position 4-6 cm away from the inner wall of the reinforced concrete liner 1, filling rapid-hardening cement 12 with the depth of 2-3 cm in the expansion joint 3 to fix the position of the filler 11, and then caulking with polyurethane 13 with the depth of 2-3 cm, wherein the polyurethane material has the characteristics of good viscosity and elasticity, so that a good waterproof effect can be still provided when the expansion joint 3 is expanded; and a waterproof layer 14 made of acrylic polymer cement paint is further arranged on the inner wall of the reinforced concrete secondary lining 2 (the waterproof layer 14 at least covers the range of 30cm on each of the left side and the right side of the expansion joint 3, and the thickness of the waterproof layer is larger than 2.5mm), and the waterproof layer 14 gradually thickens at the position close to the water outlet end of the one-way valve 5 and extends inwards along the side wall of the one-way valve 5.
Therefore, the invention also provides a construction method of the hydrophobic structure of the expansion joint 3 of the water delivery culvert pipe section, which comprises the following steps:
arranging a (red copper) water stop 10 and a filler 11 (preferably asphalt and sesame oil) at the position of the expansion joint 3;
a plurality of hoses 6 are arranged on the inner side of the filler 11 along the circumferential direction, a plurality of water inlet holes 7 arranged at intervals along the length direction are preset on the side wall of each hose 6, and the hoses are pre-arranged in a single layer of 100g/m2Short fiber needle-punched non-woven soilWinding the work cloth 8;
two adjacent hoses 6 are connected by two working ports of a tee joint 4, so that all the hoses 6 are connected into a ring;
the last working hole of the tee joint 4 extends towards the radial inner side of the expansion joint 3 and is connected with a water inlet end of a one-way valve 5, and a water outlet end of the one-way valve 5 exceeds the inner wall of the reinforced concrete lining 1 by a certain length (generally 0.5-1.5 cm);
filling filler 11 into the expansion joint 3 at the radial inner side of the tee joint 4 to a position 4-6 cm away from the inner wall of the reinforced concrete liner 1; then, continuously filling rapid-hardening cement 12 with the depth of 2-3 cm in the expansion joint 3 to fix the position of the filler 11; finally, the polyurethane material with the depth of 2-3 cm is used for caulking 13, and the polyurethane material has the characteristics of good viscosity and elasticity, so that a good waterproof effect can be still provided when the expansion joint 3 is expanded and contracted;
and a waterproof layer 14 made of acrylic polymer cement paint is further arranged on the inner wall of the reinforced concrete secondary lining 2, and the waterproof layer 14 gradually thickens at a position close to the water outlet end of the one-way valve 5 and extends inwards along the side wall of the one-way valve 5.
When the hydrophobic structure of the expansion joint 3 of the water delivery culvert pipe joint obtained in the way is applied to a water delivery tunnel rich in pressurized underground water, if the outside of the pipe joint bears the pressure of the underground water, the underground water enters the hose 6 through the water inlet hole 7, then is guided into the one-way valve 5 through the tee joint 4 and is discharged into the pipe joint, so that the water pressure outside the pipe joint is drained, and the water filler 11 is prevented from being damaged; the water in the pipe joint can not enter the hose 6 through the one-way valve 5, so the problem of water leakage in the pipe joint can not exist.
Compared with the prior art, the invention adopts a new structure, method and thought to solve the problem of sealing the expansion joint 3 existing in the prior art for a long time.

Claims (7)

1. A construction method of a hydrophobic structure of an expansion joint of a water delivery culvert pipe section is characterized by comprising the following steps:
arranging a water stop and a filler at the position of the expansion joint;
a plurality of hoses are arranged on the inner side of the filler along the circumferential direction, a plurality of water inlet holes which are arranged at intervals along the length direction are preset on the side wall of each hose, and the hoses are wound by geotextile in advance;
two adjacent hoses are connected by two working ports of a tee joint, so that all the hoses are connected into a ring;
the last working port of the tee joint extends towards the radial inner side of the expansion joint and is connected with the water inlet end of the one-way valve, and the water outlet end of the one-way valve is communicated with the inside of the pipe joint;
and filling and fixing the filler continuously in the expansion joint at the radial inner side of the tee joint.
2. The method for constructing the hydrophobic structure of the expansion joint of the water delivery culvert pipe section of claim 1, which is characterized in that: filling filler in the expansion joint on the radial inner side of the tee joint continuously to a position 4-6 cm away from the inner wall of the pipe joint; then continuously filling rapid hardening cement with the depth of 2-3 cm in the expansion joint; and finally, caulking by using polyurethane with the depth of 2-3 cm.
3. The method for constructing a hydrophobic structure of an expansion joint of a water delivery culvert pipe section according to claim 1 or 2, wherein the method comprises the following steps: and the inner wall of the pipe joint is also provided with a waterproof layer made of acrylic polymer cement paint.
4. The method for constructing a hydrophobic structure of an expansion joint of a water delivery culvert pipe section according to claim 3, characterized in that: the waterproof layer is gradually thickened at the position close to the water outlet end of the one-way valve and extends inwards along the side wall of the one-way valve.
5. The method for constructing the hydrophobic structure of the expansion joint of the water delivery culvert pipe section of claim 1, which is characterized in that: the filler is asphalt hemp.
6. The method for constructing the hydrophobic structure of the expansion joint of the water delivery culvert pipe section of claim 1, which is characterized in that: the geotextile is wound on the hose in a single layer of 100g/m2The staple fiber needle-punched non-woven geotextile.
7. The method for constructing the hydrophobic structure of the expansion joint of the water delivery culvert pipe section of claim 1, which is characterized in that: and the water outlet end of the one-way valve exceeds the inner wall of the pipe joint by 0.5-1.5 cm.
CN201911060530.4A 2019-11-01 2019-11-01 Construction method of drainage structure of expansion joint of water delivery culvert pipe joint Pending CN110805008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911060530.4A CN110805008A (en) 2019-11-01 2019-11-01 Construction method of drainage structure of expansion joint of water delivery culvert pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911060530.4A CN110805008A (en) 2019-11-01 2019-11-01 Construction method of drainage structure of expansion joint of water delivery culvert pipe joint

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Publication Number Publication Date
CN110805008A true CN110805008A (en) 2020-02-18

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038524A1 (en) * 1980-10-11 1982-04-29 Leschus, geb. Putsch, Hildegard, 5600 Wuppertal Water bar or sealing strip for concrete joints - has integral grout tube for later injection of expanding grout to seal leaks
CN109208651A (en) * 2018-10-30 2019-01-15 中建五局土木工程有限公司 Underground engineering super-long structural body deformation joint waterproof/drainage structure construction method and structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038524A1 (en) * 1980-10-11 1982-04-29 Leschus, geb. Putsch, Hildegard, 5600 Wuppertal Water bar or sealing strip for concrete joints - has integral grout tube for later injection of expanding grout to seal leaks
CN109208651A (en) * 2018-10-30 2019-01-15 中建五局土木工程有限公司 Underground engineering super-long structural body deformation joint waterproof/drainage structure construction method and structure

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Application publication date: 20200218

RJ01 Rejection of invention patent application after publication