CN115949438A - Ultrahigh water pressure shield segment joint structure and waterproof method - Google Patents
Ultrahigh water pressure shield segment joint structure and waterproof method Download PDFInfo
- Publication number
- CN115949438A CN115949438A CN202310243751.5A CN202310243751A CN115949438A CN 115949438 A CN115949438 A CN 115949438A CN 202310243751 A CN202310243751 A CN 202310243751A CN 115949438 A CN115949438 A CN 115949438A
- Authority
- CN
- China
- Prior art keywords
- water
- wedge
- rubber
- shaped rubber
- stop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 205
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229920001971 elastomer Polymers 0.000 claims abstract description 116
- 239000000853 adhesive Substances 0.000 claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 239000007767 bonding agent Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 238000004078 waterproofing Methods 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000009933 burial Methods 0.000 claims description 3
- 238000004826 seaming Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008961 swelling Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
- E21D11/386—Sealing means positioned between adjacent lining members inflatable sealing means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a segment joint structure of an ultrahigh hydraulic shield, which comprises segments and the like, wherein a wedge-shaped rubber waterstop is positioned in a chute of the segments, the bottom of the chute is provided with a groove, a pressurizing reserved pipe is communicated with the groove, a pressurizing auxiliary waterstop rubber belt and a pressurizing pipe are positioned in the groove and the pressurizing reserved pipe, the wedge-shaped rubber waterstop is connected with the bottom of the chute in an adhesive manner, adjacent wedge-shaped rubber waterstops are connected in an adhesive manner, and a waterproof method for the segment joint structure of the ultrahigh hydraulic shield is used for ensuring that the compressive stress P of the wedge-shaped rubber waterstop is caused by the compression stress P 1 Bonding stress P of contact surface 2 Additional horizontal compressive stress P generated by external water pressure 3 And additional pressure stress P generated by the pressurization auxiliary water-stop rubber belt 4 Is not less than the water pressure. The invention has multiple waterproof modes, can adapt to the ultrahigh water pressure with the water depth of more than 150m, has easy realization of a waterproof structure and low cost, and can be constructed with shield equipmentThe effect is matched, and the construction is not disturbed.
Description
Technical Field
The invention belongs to the technical field of shield segment waterproofing, and particularly relates to a ultrahigh water pressure shield segment joint structure and a waterproofing method.
Background
The scale and the construction speed of the tunnel in China are the most important in the world, and most of tunnels are constructed by a shield method which is high in mechanization degree, good in operation environment, safe and efficient in construction. The waterproof capability of the tunnel is a key factor for successful construction under the influence of underground water, and in the future of channel construction of the strait in China, the tunnel scheme faces extremely high water pressure of over 150 mPa. The shield tunnel main body is formed by splicing a plurality of segments, the segments have a plurality of seams, and the waterproof property of the shield tunnel main body is the best in the whole tunnel construction link. The shield tunnel segment joint waterproof mainly comprises modes of a water swelling water stop strip, an ethylene propylene diene monomer rubber water stop strip and the like, the water swelling water stop strip generates compression force to stop water after swelling with water through a swelling material, and the shield tunnel segment joint waterproof is less and less used in China due to the fact that the durability and the adaptive water pressure are limited. The existing ethylene propylene diene monomer rubber water stopping technology is that rubber compression is carried out when pipe pieces are simply assembled, so that the pressure stress of a rubber contact surface at a joint is larger than the external water pressure to stop water, but the limitation of the structure and the external compression force is caused, and the waterproof capacity is limited.
The disclosed improvement techniques are also very limited: for example, CN202690083U, a chinese patent of granted publication number, discloses a waterproof structure of a shield tunnel segment, which has the problems that when the segment is subjected to ultra-high water pressure, the segment cannot be tightly attached, so that a gap is easily formed between the waterproof structure and the segment assembly, and the waterproof effect is poor and the structure is difficult to be firmly fixed. Also, for example, the chinese patent No. CN215332912U discloses a waterproof structure for a segment of an ultra-high water pressure shield tunnel, which has the problems of complicated structure, difficulty in field implementation due to the fact that how to install the segment in cooperation with a shield machine is not considered, and the like.
In view of the above, aiming at the defects and adaptation limitations of the prior art, a waterproof joint structure and a waterproof method for a segment joint of an ultrahigh water pressure shield are provided.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a segment joint structure of an ultrahigh water pressure shield and a waterproof method, which have multiple waterproof modes, can adapt to the ultrahigh water pressure with the water depth of more than 150m, are easy to construct, have strong waterproof capability and low cost, can be effectively matched with the construction of shield equipment, and do not interfere the construction.
The technical scheme adopted by the invention is as follows: the utility model provides a super high water pressure shield constructs section of jurisdiction seam structure, includes section of jurisdiction, wedge rubber waterstop, supplementary stagnant water rubber area and forcing pipe of pressurization, be provided with the chute on the terminal surface of the seam waterproof node of section of jurisdiction, wedge rubber waterstop is located in the chute, the chute bottom is provided with the recess, it reserves the pipe to be provided with the pressurization in the section of jurisdiction, pressurize reserve the pipe with the recess intercommunication, the supplementary stagnant water rubber area of pressurization is located in the recess, with the forcing pipe of the vacuum cavity intercommunication of supplementary stagnant water rubber area of pressurization is located it is intraductal to pressurize reserve, wedge rubber waterstop and chute bottom bonding connection are adjacent wedge rubber waterstop bonding connection on the section of jurisdiction forms the shield and constructs section of jurisdiction seam stagnant water system that the compressive stress of wedge rubber waterstop, the bonding power of the seam of wedge rubber waterstop, the additional horizontal compressive stress that external water pressure produced to wedge rubber waterstop structure extrusion of wedge rubber area are main, the additional compressive stress that the supplementary stagnant water of the pressurization that the stagnant water rubber area produced of reservation produced for assisting.
Furthermore, the included angle between the bottom surface of the segment seam waterproof node chute and the vertical direction is 10-15 degrees.
Furthermore, an auxiliary compression hole is arranged in the wedge-shaped rubber water stop.
Further, the side face, far away from the pressurization auxiliary water stop rubber belt, of the wedge-shaped rubber water stop belt is a vertical face.
Furthermore, the wedge-shaped rubber water stop belt is connected with the bottom of the chute in an adhesive mode through an adhesive, and the wedge-shaped rubber water stop belts on the adjacent pipe pieces are connected in an adhesive mode through the adhesive.
The technical scheme adopted by the invention is as follows: a waterproof method using the ultrahigh water pressure shield segment joint structure comprises the following steps:
step 1: determining design water pressure P of tunnel in ultrahigh water pressure environment according to shield tunnel burial depth and upper water level Design water ；
According to the physical and mechanical characteristics of the wedge-shaped rubber waterstop, the compressive stress P of the wedge-shaped rubber waterstop after the segment assembly is estimated 1 ；
According to design water pressure P Design water And the wedge-shaped surface inclination angle alpha of the wedge-shaped rubber water stop belt, and estimating the additional horizontal compressive stress P of the wedge-shaped rubber water stop belt generated by water pressure 3 ，P 3 =P Design water The angle is x tan alpha, and the wedge-shaped surface inclination angle is the included angle between the wedge-shaped surface and the vertical direction;
comparison P 1 + P 3 And P Design water The size of (2): if P 1 + P 3 ≥P Design water The adhesive provides an adhesive stress P 2 Taking 1.2MPa; if P 1 + P 3 ＜P Design water Then P is 2 = P Design water -（P 1 + P 3 ) And P is 2 ＞1.2MPa；
Step 2: compressive stress P according to parameter 1 Bonding stress P 2 And additional horizontal compressive stress P 3 Selecting a proper wedge-shaped rubber water stop and a proper bonding agent; manufacturing a duct piece made of reinforced concrete;
and step 3: coating a bonding agent in the chute at the water stop node of the duct piece, sticking a wedge-shaped rubber water stop and a pressurizing auxiliary water stop rubber belt, coating the bonding agent on the outer side of the wedge-shaped rubber water stop, and assembling the duct piece;
and 4, step 4: after the segments are assembled and separated from the shield tail, under the condition of ultrahigh water pressure and if water leaks from the joint, filling inert slurry into the pressurization auxiliary water-stop rubber belt through the pressurization pipe, extruding the wedge-shaped rubber water-stop belt by the pressurization auxiliary water-stop rubber belt to generate an auxiliary pressurization stress P 4 Until no water leakage occurs at the joint.
Further, in step 1, P Water installation =2ρ Water (W) gh，ρ Water (W) Is water density, g is gravitational acceleration; h is the distance between the lowest point at the bottom of the tunnel and the water surface, namely the designed water pressure is not less than 2 times of the water pressure generated by the depth of the tunnel water.
Furthermore, in the step 4, when the pipe pieces are assembled, a compressive stress P is generated on the contact surface of the wedge-shaped rubber water stop between the two pipe pieces 1 And simultaneously generates bonding stress P 2 (ii) a After the pipe piece is separated from the tail of the shield, the pipe piece is subjected to external water pressure P Water (W) Under the action of the action, the wedge-shaped rubber waterstop generates additional horizontal compressive stress P 3 。
The working principle is as follows: compressive stress P generated by rubber waterstop compression in construction process by singly relying on waterproof of existing segment joints 1 Not less than external water pressure P Water (I) Reach seam water-proof effects, promptly: p 1 ≥P Water (W) . The water-stop belt is easy to realize when the water pressure is not high (generally less than 100m water depth), and when the water pressure is ultrahigh, such as 100m or higher water depth, the pressure water-proof mode generated by the compression of the water-stop belt alone cannot meet the engineering requirement.
The waterproof method comprises the step of compressing the wedge-shaped rubber waterstop to generate compressive stress P 1 Bonding stress P of contact surface 2 Additional horizontal compressive stress P generated by compressing wedge-shaped rubber waterstop through wedge-shaped structure by external water pressure 3 And additional pressure stress P generated by the pressurization auxiliary water-stop rubber belt 4 Composition i.e. P 1 + P 2 + P 3 + P 4 ≥P Water (W) 。
Compared with the prior art, the invention has the following beneficial effects:
1. the invention designs a segment joint waterproof structure capable of providing water stop compression self-locking and secondary pressurization: the contact surface of the concrete of the waterproof joint of the single pipe piece and the wedge-shaped rubber water stop belt is an inclined surface, and the waterproof joint of the joint forms a wedge-shaped structure after the pipe pieces are assembled. Inclined plane inclination satisfies wedge rubber waterstop ability auto-lock needs when section of jurisdiction compression, and frictional force is greater than the section of jurisdiction extrusion outward component to wedge rubber waterstop production promptly, and wedge rubber waterstop does not slide toward the section of jurisdiction outside. The inclined plane of the waterproof node of the segment joint is provided with a groove for secondary pressurization and water stop and a pressurization reserved pipe.
2. The invention designs a wedge-shaped rubber waterstop structure capable of self-locking under external pressure: the cross section is a rectangular trapezoid, and the upper part of the rectangular wedge-shaped structure is wide and the lower part of the rectangular wedge-shaped structure is narrow. The wedge-shaped rubber water stop belt has a vertical plane side and a water stop belt side, and a bonding surface is compressed between the water stop belts, and the inclination angle of the wedge-shaped surface is the same as that of the segment water stop joint.
3. The invention designs a pressurization auxiliary water-stop rubber belt with a pressurization auxiliary water-stop function: the pressurizing auxiliary water stop rubber belt is internally provided with a cavity which can be filled with inert flowing materials, and the cavity structure is in a vacuum compression state initially. After the pipe piece is closed, if water seepage or water leakage occurs, inert slurry can be filled into the cavity in a pressurizing mode, the wedge-shaped rubber water stop belt system is extruded, and the closing pressure is increased to achieve the auxiliary water stop function.
4. The invention designs a multiple waterproof mode: the closing pressure at the water stopping joint consists of four parts, namely compressive stress generated by the compression of the wedge-shaped rubber water stopping belt, bonding stress of a contact surface, additional horizontal compressive stress generated by the compression of the wedge-shaped rubber water stopping belt by the external water pressure through the wedge-shaped structure and additional compressive stress generated by the pressurization auxiliary water stopping rubber belt, and the condition that water seepage or water leakage does not occur at the joint can be realized under the condition of the water pressure of more than 150m water depth. The invention is suitable for ultrahigh water pressure, has easy realization of construction, low cost, safety and reliability, can be effectively matched with the construction of shield equipment, and does not interfere the construction.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of segment splicing according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the segment of the embodiment of the present invention after splicing;
FIG. 4 is a flow chart of an embodiment of the present invention.
In the figure: the pipe comprises a pipe piece 1, a wedge-shaped rubber waterstop 2, a pressurizing auxiliary waterstop rubber belt 3, a pressurizing pipe 4, a chute 5, a groove 6 and a pressurizing reserved pipe 7.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides an ultrahigh hydraulic shield segment joint structure, which comprises a segment 1, a wedge-shaped rubber water stop belt 2, a pressurization auxiliary water stop rubber belt 3 and a pressurization pipe 4, as shown in figure 1. The end face of the joint waterproof node of the duct piece 1 is provided with a chute 5, and the wedge-shaped rubber water stop 2 is located in the chute 5. The wedge-shaped rubber water stop 2 is bonded and connected with the bottom of the chute 5 through an adhesive. The included angle between the bottom surface of the inclined groove 5 and the vertical direction is 10-15 degrees, and the inclination angle of the wedge-shaped surface of the wedge-shaped rubber water stop 2, which is bonded with the bottom surface of the inclined groove 5, is 10-15 degrees. This inclination can satisfy 2 auto-lock needs of wedge rubber waterstop when section of jurisdiction 1 compresses, and frictional force is greater than the outside component force that section of jurisdiction 1 extrusion produced wedge rubber waterstop 2 promptly, and wedge rubber waterstop 2 does not slide toward the section of jurisdiction 1 outside.
And an auxiliary compression hole is formed in the wedge-shaped rubber water stop 2. The side surface of the wedge-shaped rubber water stop 2, which is far away from the auxiliary pressurizing water stop rubber belt 3, is a vertical surface. When the adjacent duct pieces 1 are spliced, the side faces need to be coated with an adhesive, so that the wedge-shaped rubber water stops 2 on the adjacent duct pieces 1 are bonded and connected through the adhesive, as shown in fig. 2. After the segments 1 are spliced, the wedge-shaped rubber waterstops 2 are squeezed, as shown in fig. 3.
The bottom of the chute 5 is provided with a groove 6, a pressurizing reserved pipe 7 is arranged in the duct piece 1, the pressurizing reserved pipe 7 is communicated with the groove 6, the pressurizing auxiliary water-stop rubber belt 3 is positioned in the groove 6, and a pressurizing pipe 4 communicated with a vacuum cavity of the pressurizing auxiliary water-stop rubber belt 3 is positioned in the pressurizing reserved pipe 7. Inert slurry can be filled into the vacuum cavity of the auxiliary water stop rubber belt 3 through the pressurizing pipe 4, so that the auxiliary water stop rubber belt 3 extrudes the wedge-shaped rubber water stop belt 2, and the closing pressure is increased to achieve the auxiliary water stop function.
The embodiment of the invention also provides a waterproof method using the ultrahigh water pressure shield segment joint structure, as shown in fig. 4, comprising the following steps:
step 1: according to the shieldDesign water pressure P of tunnel in ultrahigh water pressure environment determined by tunnel burial depth and upper water level Design water ；P Design water =2ρ Water (W) gh，ρ Water (W) Is water density, g is gravitational acceleration; h is the distance between the lowest point at the bottom of the tunnel and the water surface.
According to the physical and mechanical characteristics of the wedge-shaped rubber water stop 2, the compressive stress P of the wedge-shaped rubber water stop 2 after the segment 1 is assembled is estimated 1 In general, P 1 Less than 1.0MPa.
According to design water pressure P Design water And the wedge-shaped surface inclination angle alpha of the wedge-shaped rubber water stop 2, and estimating the additional horizontal compressive stress P of the wedge-shaped rubber water stop 2 generated by the water pressure 3 ，P 3 =P Design water The x tan alpha is 10-15 degrees, and the inclination angle of the wedge-shaped surface is the included angle between the wedge-shaped surface and the vertical direction.
Comparison P 1 + P 3 And P Design water The size of (2): if P 1 + P 3 ≥P Design water The adhesive provides an adhesive stress P 2 =1.2MPa; if P 1 + P 3 ＜P Design water Then P is 2 = P Design water -（P 1 + P 3 ) And P is 2 ＞1.2Mpa。
Step 2: compressive stress P according to parameter 1 Bonding stress P 2 And additional horizontal compressive stress P 3 And selecting a proper wedge-shaped rubber water stop 2 and an adhesive. The types of the wedge-shaped rubber water stop 2 and the adhesive can be determined after providing the physical and mechanical property requirements for manufacturers.
And manufacturing the reinforced concrete duct piece 1 meeting the requirements of the wedge-shaped water stop node and the pressurizing reserved pipe 7.
And step 3: and (3) coating a binder in a chute 5 at the water stop joint of the duct piece 1, pasting a wedge-shaped rubber water stop 2 and a pressurizing auxiliary water stop rubber belt 3, coating the binder on the outer side of the wedge-shaped rubber water stop 2, and assembling the duct piece.
And 4, step 4: the duct piece 1 is assembled and separated from the tail of the shield. When the duct pieces 1 are assembled, the contact surface of the wedge-shaped rubber water stop 2 between the two duct pieces 1 generates a compressive stress P 1 And simultaneously generates bonding stress P 2 (ii) a Segment 1 take-offAfter the tail of the shield is out, the shield is subjected to external water pressure P Water (W) Under the action, the wedge-shaped rubber water stop 2 generates additional horizontal compressive stress P 3 . If the joint does not leak water under the ultrahigh water pressure, the specification P indicates that water is not leaked 1 + P 2 + P 3 ≥P Water (W) . At this time, the auxiliary pressing by the pressing auxiliary water stop rubber belt 3 is not needed. If water leaks from the joint, the auxiliary pressure water-stop rubber belt 3 is filled with inert slurry through the pressure pipe 4, and the auxiliary pressure water-stop rubber belt 3 extrudes the wedge-shaped rubber water-stop belt 2 to generate an auxiliary pressure stress P 4 Until no water leaks at the joint, at which point P 1 + P 2 + P 3 + P 4 ≥P Water (W) 。
The closing pressure at the water stop node of the embodiment is the compressive stress P generated by the compression of the wedge-shaped rubber water stop 2 1 Bonding stress P of contact surface 2 The external water pressure compresses the additional horizontal compressive stress P generated by the wedge-shaped rubber water stop 2 through the wedge-shaped structure 3 And additional pressure stress P generated by the pressurization auxiliary water-stop rubber belt 3 4 The composition can realize that no water seepage or water leakage occurs at the joint under the condition of water pressure of more than 150 mPa.
The present invention has been described in detail with reference to the embodiments, but the description is only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The scope of protection of the invention is defined by the claims. The technical solutions of the present invention or those skilled in the art, based on the teaching of the technical solutions of the present invention, should be considered to be within the scope of the present invention, and all equivalent changes and modifications made within the scope of the present invention or equivalent technical solutions designed to achieve the above technical effects are also within the scope of the present invention.
Claims (8)
1. The utility model provides an ultrahigh water pressure shield constructs section of jurisdiction seam structure which characterized in that: including section of jurisdiction, wedge rubber waterstop, supplementary stagnant water rubber area of pressurization and forcing pipe, be provided with the chute on the terminal surface of the waterproof node of seam of section of jurisdiction, wedge rubber waterstop is located in the chute, the chute bottom is provided with the recess, be provided with the pressurization in the section of jurisdiction and reserve the pipe, the pressurization reserve the pipe with the recess intercommunication, the supplementary stagnant water rubber area of pressurization is located in the recess, with the forcing pipe of the vacuum cavity intercommunication of supplementary stagnant water rubber area of pressurization is located in the pressurization reserve pipe, wedge rubber waterstop is connected, adjacent with chute bottom bonding wedge rubber waterstop bonding on the section of jurisdiction is connected.
2. The ultra-high water pressure shield segment joint structure of claim 1, wherein: the included angle between the bottom surface of the segment joint waterproof node chute and the vertical direction is 10-15 degrees.
3. The ultra-high water pressure shield segment joint structure of claim 1, wherein: and an auxiliary compression hole is formed in the wedge-shaped rubber water stop.
4. The ultra-high water pressure shield segment joint structure of claim 1, wherein: the side surface of the wedge-shaped rubber water stop belt far away from the auxiliary pressurizing water stop rubber belt is a vertical surface.
5. The ultra-high water pressure shield segment joint structure of claim 1, wherein: the wedge-shaped rubber waterstops are connected with the bottoms of the chutes in an adhesive mode through adhesives, and the wedge-shaped rubber waterstops on the adjacent pipe pieces are connected in an adhesive mode through the adhesives.
6. A waterproofing method using the ultra-high hydraulic shield segment seaming structure of any one of claims 1 to 5, comprising the steps of:
step 1: determining design water pressure P of tunnel in ultrahigh water pressure environment according to shield tunnel burial depth and upper water level Design water ；
Estimating the compressive stress P of the wedge-shaped rubber waterstop after the assembly of the segments according to the physical and mechanical characteristics of the wedge-shaped rubber waterstop 1 ；
According to design water pressure P Design water And wedge rubberThe wedge-shaped surface inclination angle alpha of the water stop belt, and the additional horizontal compressive stress P of the wedge-shaped rubber water stop belt generated by estimating the water pressure 3 ，P 3 =P Design water ×tanα；
Comparison of P 1 + P 3 And P Design water The size of (2): if P 1 + P 3 ≥P Design water The adhesive provides an adhesive stress P 2 Taking 1.2MPa; if P 1 + P 3 ＜P Design water Then P is 2 = P Design water -（P 1 + P 3 ) And P is 2 ＞1.2MPa；
Step 2: compressive stress P according to parameter 1 Bonding stress P 2 And additional horizontal compressive stress P 3 Selecting a proper wedge-shaped rubber water stop and a proper bonding agent;
and 3, step 3: coating a bonding agent in a chute at a water stop node of the duct piece, adhering a wedge-shaped rubber water stop and a pressurizing auxiliary water stop rubber belt, coating the bonding agent on the outer side of the wedge-shaped rubber water stop, and assembling the duct piece;
and 4, step 4: after the segments are assembled and separated from the tail of the shield, if water leaks from the joint, inert slurry is filled into the auxiliary pressurizing water-stop rubber belt through the pressurizing pipe, and the auxiliary pressurizing water-stop rubber belt extrudes the wedge-shaped rubber water-stop belt to generate an auxiliary pressurizing stress P 4 Until no water leakage occurs at the joint.
7. The waterproofing method according to claim 6, wherein: in step 1, P Design water =2ρ Water (I) gh，ρ Water (I) Is water density, g is gravitational acceleration; h is the distance between the lowest point at the bottom of the tunnel and the water surface.
8. The waterproofing method according to claim 6, wherein: in step 4, when the pipe pieces are assembled, the contact surface of the wedge-shaped rubber water stop between the two pipe pieces generates a compressive stress P 1 And simultaneously generates bonding stress P 2 (ii) a After the pipe piece is separated from the tail of the shield, the pipe piece is subjected to external water pressure P Water (W) Under the action of the action, the wedge-shaped rubber waterstop generates additional horizontal compressive stress P 3 。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310243751.5A CN115949438B (en) | 2023-03-15 | 2023-03-15 | Super-high water pressure shield segment joint structure and waterproof method |
| NL2036387A NL2036387B1 (en) | 2023-03-15 | 2023-11-30 | A super high water pressure shield segment joint structure and waterproof method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310243751.5A CN115949438B (en) | 2023-03-15 | 2023-03-15 | Super-high water pressure shield segment joint structure and waterproof method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115949438A true CN115949438A (en) | 2023-04-11 |
| CN115949438B CN115949438B (en) | 2023-05-05 |
Family
ID=85893070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310243751.5A Active CN115949438B (en) | 2023-03-15 | 2023-03-15 | Super-high water pressure shield segment joint structure and waterproof method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115949438B (en) |
| NL (1) | NL2036387B1 (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB866159A (en) * | 1959-02-25 | 1961-04-26 | Rheinstahl Eisenwerke Ge | Improvements in caulked socketed pipe connections |
| JP2001280092A (en) * | 2000-04-03 | 2001-10-10 | Shimizu Corp | Segment lining method and segment |
| CN201714396U (en) * | 2009-09-15 | 2011-01-19 | 中铁第四勘察设计院集团有限公司 | Waterproof structure of shield tunnel segment seam |
| CN203403892U (en) * | 2013-06-24 | 2014-01-22 | 中铁第一勘察设计院集团有限公司 | Waterproof structure of lining seam of shield tunnel in high-pressure water-rich stratum |
| CN203768951U (en) * | 2014-03-17 | 2014-08-13 | 江苏省城市规划设计研究院 | Basement deformation crack waterproof device with hydrophobic structure |
| CN106640152A (en) * | 2016-12-26 | 2017-05-10 | 同济大学 | Elastic sealing pad for prefabrication pipe section jointing of city underground pipeline corridor |
| CN206158766U (en) * | 2016-10-27 | 2017-05-10 | 中国石油天然气集团公司 | Oil gas pipeline shield tunnel segment joint waterproof seal structure |
| CN108442951A (en) * | 2018-05-29 | 2018-08-24 | 中铁二院工程集团有限责任公司 | A kind of water guide sealing device for shield tunnel seam |
| CN210033476U (en) * | 2019-03-18 | 2020-02-07 | 上海市隧道工程轨道交通设计研究院 | Waterproof structure for shield tunnel segment joint |
| CN111101983A (en) * | 2020-02-26 | 2020-05-05 | 中铁第四勘察设计院集团有限公司 | Segment, lining and shield tunnel of shield tunnel and water pressure control method of segment |
| CN111119953A (en) * | 2020-01-20 | 2020-05-08 | 杭州临安中民筑友智造科技有限公司 | Segment waterproof structure for opening pipe joints and construction method |
| CN211666741U (en) * | 2020-01-20 | 2020-10-13 | 杭州临安中民筑友智造科技有限公司 | Section of jurisdiction waterproof construction to tube slot is opened |
| CN211819415U (en) * | 2020-03-10 | 2020-10-30 | 中铁（天津）隧道工程勘察设计有限公司 | Waterproof structure of shield tunnel section of jurisdiction of ultrahigh water pressure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3815142A1 (en) * | 1988-05-04 | 1989-11-16 | Phoenix Ag | ACTIVE SEAL, IN PARTICULAR TUEBBING SEAL |
| DE4406298A1 (en) * | 1994-02-26 | 1995-08-31 | Phoenix Ag | Sealing system for tunnel construction |
| CN202690083U (en) | 2012-01-13 | 2013-01-23 | 上海市政工程设计研究总院（集团）有限公司 | Waterproof structure of shield tunnel duct piece |
| CN215332912U (en) | 2021-08-23 | 2021-12-28 | 中铁十八局集团有限公司 | Waterproof structure for ultrahigh water pressure shield tunnel segment |
-
2023
- 2023-03-15 CN CN202310243751.5A patent/CN115949438B/en active Active
- 2023-11-30 NL NL2036387A patent/NL2036387B1/en active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB866159A (en) * | 1959-02-25 | 1961-04-26 | Rheinstahl Eisenwerke Ge | Improvements in caulked socketed pipe connections |
| JP2001280092A (en) * | 2000-04-03 | 2001-10-10 | Shimizu Corp | Segment lining method and segment |
| CN201714396U (en) * | 2009-09-15 | 2011-01-19 | 中铁第四勘察设计院集团有限公司 | Waterproof structure of shield tunnel segment seam |
| CN203403892U (en) * | 2013-06-24 | 2014-01-22 | 中铁第一勘察设计院集团有限公司 | Waterproof structure of lining seam of shield tunnel in high-pressure water-rich stratum |
| CN203768951U (en) * | 2014-03-17 | 2014-08-13 | 江苏省城市规划设计研究院 | Basement deformation crack waterproof device with hydrophobic structure |
| CN206158766U (en) * | 2016-10-27 | 2017-05-10 | 中国石油天然气集团公司 | Oil gas pipeline shield tunnel segment joint waterproof seal structure |
| CN106640152A (en) * | 2016-12-26 | 2017-05-10 | 同济大学 | Elastic sealing pad for prefabrication pipe section jointing of city underground pipeline corridor |
| CN108442951A (en) * | 2018-05-29 | 2018-08-24 | 中铁二院工程集团有限责任公司 | A kind of water guide sealing device for shield tunnel seam |
| CN210033476U (en) * | 2019-03-18 | 2020-02-07 | 上海市隧道工程轨道交通设计研究院 | Waterproof structure for shield tunnel segment joint |
| CN111119953A (en) * | 2020-01-20 | 2020-05-08 | 杭州临安中民筑友智造科技有限公司 | Segment waterproof structure for opening pipe joints and construction method |
| CN211666741U (en) * | 2020-01-20 | 2020-10-13 | 杭州临安中民筑友智造科技有限公司 | Section of jurisdiction waterproof construction to tube slot is opened |
| CN111101983A (en) * | 2020-02-26 | 2020-05-05 | 中铁第四勘察设计院集团有限公司 | Segment, lining and shield tunnel of shield tunnel and water pressure control method of segment |
| CN211819415U (en) * | 2020-03-10 | 2020-10-30 | 中铁（天津）隧道工程勘察设计有限公司 | Waterproof structure of shield tunnel section of jurisdiction of ultrahigh water pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| NL2036387B1 (en) | 2024-07-05 |
| CN115949438B (en) | 2023-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201714396U (en) | Waterproof structure of shield tunnel segment seam | |
| CN110219669B (en) | Wedged waterproof structure for prefabricated shield segment | |
| CN201606084U (en) | Waterproof structure of shield-structured tunnel segment | |
| CN113048322A (en) | Trenchless pipeline repairing device and pipeline repairing method thereof | |
| CN115949438A (en) | Ultrahigh water pressure shield segment joint structure and waterproof method | |
| CN111425211B (en) | Stacked multilayer rubber bag sealing structure capable of meeting large-gap requirement and using method thereof | |
| CN214577082U (en) | Folding tunnel joint flexible waterproof structure | |
| CN112761683A (en) | Inclined bolt hole waterproof structure of high-water-head shield tunnel segment | |
| CN112761681A (en) | Bolt hole waterproof structure of high-head shield tunnel segment | |
| CN113431608B (en) | Prefabricated assembly type structure joint water stop strip bag structure and contact stress compensation method | |
| CN109738132B (en) | System and method for rapidly detecting water stopping effect of expansion joint of hydraulic building | |
| CN110805460A (en) | Waterproof sealing method for bolt hole of shield tunnel segment | |
| CN203716109U (en) | High-elasticity tensile low-temperature resistant adjustable rubber waterstop | |
| CN108252728A (en) | A kind of duct pieces of shield tunnel seam waterproof elastic sealing gasket | |
| CN111287773B (en) | Waterproof sealing gasket for pipe sheet | |
| CN208996744U (en) | A kind of novel combined waterproof sealing gasket of shield tunnel | |
| CN208057130U (en) | A kind of duct pieces of shield tunnel seam waterproof elastic sealing gasket | |
| CN112343625A (en) | Joint sealing gasket | |
| CN111101983A (en) | Segment, lining and shield tunnel of shield tunnel and water pressure control method of segment | |
| CN101463727B (en) | Edge-sealing water-proof method of full-packaging waterproof layer used for tunnel | |
| CN221032667U (en) | Composite sealing gasket and structure for waterproof joint of socket joint shield segment | |
| CN221856806U (en) | Mining flexible self-sealing wall | |
| CN220285777U (en) | Seam waterproof structure of assembled structure | |
| CN214244278U (en) | Self-adhesive elastic sealing gasket and butt joint structure of shield segments formed by same | |
| CN112855226A (en) | Folding tunnel joint flexible waterproof structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |