CN112901221B - Waterproof structure of ultra-large section rectangular pipe-jacking tunnel portal of underpass river - Google Patents
Waterproof structure of ultra-large section rectangular pipe-jacking tunnel portal of underpass river Download PDFInfo
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- CN112901221B CN112901221B CN202110148213.9A CN202110148213A CN112901221B CN 112901221 B CN112901221 B CN 112901221B CN 202110148213 A CN202110148213 A CN 202110148213A CN 112901221 B CN112901221 B CN 112901221B
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- 239000004744 fabric Substances 0.000 claims abstract description 87
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 56
- 239000010959 steel Substances 0.000 claims abstract description 56
- 238000007569 slipcasting Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000007306 turnover Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 241001397809 Hakea leucoptera Species 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- 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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Abstract
The invention discloses a waterproof structure of an oversized section rectangular pipe-jacking tunnel portal of a downward-crossing river, which comprises an initial well hole outlet device and a receiving well hole inlet device; the starting well hole outlet device comprises a hole outlet primary waterproof structure, a hole outlet secondary waterproof structure and a hole outlet tertiary waterproof structure; the receiving well hole entering device comprises a hole entering primary waterproof structure, a hole entering secondary waterproof structure and a hole entering tertiary waterproof structure; the waterproof structure of the originating well hole outlet device and the receiving well hole inlet device is distinguished clearly, and the third-stage waterproof structure is closely connected with the first two-stage waterproof structure through the rubber plates arranged in the direction, so that a specific herringbone structure is formed, and the overall waterproof effect is achieved. This waterproof construction utilizes the shield tail brush structure except that portal interface department sets up the curtain cloth rubber slab, combines the board and the thick steel plate that turn over of taking the pin bushing to set up the curtain cloth rubber slab on the pre-buried steel ring in the portal, forms dual flexible waterproof layer to set up urgent safety measure through final emergent waterproof construction.
Description
Technical Field
The invention relates to a waterproof structure for an opening of an oversized-section rectangular pipe-jacking tunnel, and belongs to the technical field of underground passage construction engineering.
Background
The pipe jacking technology is an important construction mode for underground space development and is often used as a preferred trenchless construction method for underground sewage pipelines, small tunnels and comprehensive pipe galleries. Due to the non-excavation characteristic, the corresponding waterproof problem is more important, and the instability of underground settlement caused by water leakage needs to be avoided. Different from a circular section, the effective use area of the rectangular jacking pipe is increased, the better space utilization rate is achieved, the coverage depth is wider, and the influence range is smaller. However, the rectangular pipe jacking technology still belongs to the development and popularization stage in China, and although mature circular pipe jacking can be used as reference in each link of the construction technology, the construction link of the rectangular pipe jacking is often required to be groped and developed due to the requirements of construction projects and the complexity of engineering geological conditions.
At present, the rubber plate is generally adopted for sealing, the sealing mode can meet the waterproof requirement but cannot ensure the waterproof effect, and the phenomenon of water flowing and sand flowing at the portal can be more or less generated in the reciprocating jacking process of the jacking pipe, so that the ground subsidence is caused. Meanwhile, emergency waterproof measures are not generally set, and when the cord fabric rubber plate and the like fail in the face of extremely large sudden water gushing, the personnel safety of the starting well and the receiving well cannot be ensured.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the technical problem of the prior art and provides a waterproof structure of an oversized section rectangular pipe-jacking tunnel entrance of a downward-crossing river, which has an interconnected three-stage waterproof structure.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a waterproof structure of an ultra-large section rectangular pipe-jacking tunnel portal of a downward-crossing river comprises an initial well hole outlet device and a receiving well hole inlet device;
the originating well hole outlet device comprises a hole outlet primary waterproof structure, a hole outlet secondary waterproof structure and a hole outlet tertiary waterproof structure; the hole primary waterproof structures are arranged at the hole openings annularly and fixed at the hole openings of the side walls of the well wall through bolt modules, and each hole primary waterproof structure comprises a turning plate and a hole primary cord fabric rubber plate which are arranged in a direction perpendicular to the hole opening direction; the hole secondary waterproof structures are arranged in a group, are annularly far away from the hole opening and are fixed on the side wall of the well wall through bolt modules, each hole secondary waterproof structure comprises a hole steel plate and a hole secondary cord fabric rubber plate which are arranged in a direction perpendicular to the hole direction, and the two cord fabric rubber plates in the hole secondary waterproof structures are arranged oppositely to form a herringbone structure and are matched with the hole tertiary waterproof structure to play a role; the three-level waterproof structure of going out the hole is located between one-level waterproof structure of going out the hole and the second grade waterproof structure of going out the hole, contains a set of pre-buried slip casting pipe of going out the hole of inlaying in well wall lateral wall.
The receiving well hole entering device comprises a hole entering primary waterproof structure, a hole entering secondary waterproof structure and a hole entering tertiary waterproof structure; the hole-entering primary waterproof structures are a group, are annularly arranged away from the hole opening and are fixed on the side wall of the well wall through bolt modules, each hole-entering primary waterproof structure comprises a hole-entering steel plate and a hole-entering primary cord fabric rubber plate which are arranged in the direction perpendicular to the hole-entering direction, the two cord fabric rubber plates in the hole-entering primary waterproof structure are arranged oppositely to form a herringbone structure, and a part of the cord fabric rubber plates are matched with the hole-entering tertiary waterproof structure; the hole-entering secondary waterproof structures are a group, are annularly arranged at the hole openings and are fixed at the hole openings of the side walls of the well wall through bolt modules, and each hole-entering secondary waterproof structure comprises a hole-entering secondary cord fabric rubber plate and a pressing plate which are arranged in the direction perpendicular to the hole entering direction; enter the tertiary waterproof construction in hole and be located into the hole one-level waterproof construction and enter between the hole second grade waterproof construction, contain a set of embedded slip casting pipe that advances in the well wall lateral wall of inlaying.
Further, the device also comprises a hole emergent waterproof structure matched with the hole tertiary waterproof structure and a hole entering emergent waterproof structure matched with the hole entering tertiary waterproof structure; the exit emergency waterproof structure is positioned between the exit primary waterproof structure and the exit secondary waterproof structure; the emergency waterproof structure for the hole is located between the primary waterproof structure for the hole and the secondary waterproof structure for the hole.
The emergent exit waterproof structure comprises a group of exit pre-buried emergency grouting pipes corresponding to the pre-buried grouting pipes in the three-stage exit waterproof structure and exit grouting film bags embedded on the side walls of the well wall, and under emergency conditions, expandable materials can be filled into the grouting film bags through the exit pre-buried emergency grouting pipes to block the pores between the jacking pipes and the well wall;
the emergent waterproof structure of advancing the hole includes a set of and advances the pre-buried emergent slip casting pipe of advancing the hole and inlay the slip casting membrane bag of advancing the hole on the wall of a well side wall corresponding to pre-buried slip casting pipe in the tertiary waterproof structure of advancing the hole, and under emergency, the accessible goes out the pre-buried emergent slip casting pipe of hole and fills expandable material to slip casting membrane bag, the hole between shutoff push pipe and the wall of a well.
Specifically, in the primary hole-outlet waterproof structure, a turning plate and a primary hole-outlet cord fabric rubber plate are fixed in a side wall of a well wall through a primary hole-outlet bolt module; the turning plate is provided with a pin bush and can rotate around the pin bush, and the turning plate and the hole-outlet first-level cord fabric rubber plate are sequentially arranged along the hole-outlet direction.
In the secondary exit-hole waterproof structure, an exit-hole steel plate and an exit-hole secondary cord fabric rubber plate are fixed on an embedded steel ring on a sidewall of a well wall through an exit-hole secondary bolt module; the hole steel plate and the hole secondary cord fabric rubber plate are sequentially arranged along the hole direction, the cord fabric rubber plate matched with the hole tertiary waterproof is reversely arranged, and the two cord fabric rubber plates form a herringbone structure, so that the hole secondary waterproof structure and the hole tertiary waterproof structure are combined.
The outlet three-stage waterproof structure further comprises an outlet embedded steel ring plate, wherein the outlet embedded steel ring plate is positioned on the side wall of the well wall and supported at the bottom of the outlet embedded grouting pipe; the hole-outlet primary bolt module fixes the turning plate, the hole-outlet primary cord fabric rubber plate and the hole-outlet embedded steel ring plate at the hole.
Specifically, emergent waterproof construction in hole includes the pre-buried emergent slip casting pipe in hole, and the emergent slip casting membrane bag in hole installs the side wall near emergent slip casting pipe.
In the hole-entering primary waterproof structure, a hole-entering steel plate and a hole-entering primary cord fabric rubber plate are fixed on a pre-embedded steel ring on the sidewall of the well wall through a hole-entering primary bolt module; the hole-entering steel plate and the hole-entering first-level cord fabric rubber plate are sequentially arranged along the hole-entering direction, the cord fabric rubber plate matched with the hole-entering third-level waterproof is reversely arranged, and the two cord fabric rubber plates form a herringbone structure, so that the hole-entering first-level waterproof structure and the hole-entering third-level waterproof structure are combined.
Specifically, in the secondary hole-entering waterproof structure, a secondary hole-entering cord fabric rubber plate and a pressing plate are fixed in a side wall of a well wall through a secondary hole-entering bolt module, and the secondary hole-entering cord fabric rubber plate and the pressing plate are sequentially arranged along the hole-entering direction.
The three-stage waterproof structure comprises a hole-entering embedded steel ring plate, a hole-entering embedded grouting pipe and a hole-entering three-stage waterproof structure, wherein the hole-entering embedded steel ring plate is positioned on a side wall of a well wall and supported at the bottom of the hole-entering embedded grouting pipe; and the hole-entering secondary bolt module fixes the hole-entering secondary cord fabric rubber plate, the pressing plate and the hole-entering embedded steel ring plate at the hole.
Specifically, the emergent waterproof construction of entering hole includes the pre-buried emergent slip casting pipe of entering hole, and the slip casting membrane bag of entering hole is installed at the side wall near emergent slip casting pipe.
Furthermore, anchor bars are arranged in the side wall of the well wall and perpendicular to the direction of the hole outlet/inlet.
Preferably, each bolt module comprises a nut, a stud, a thick pressing plate and a gasket respectively and is used for fixing all levels of waterproof structures.
Has the beneficial effects that:
1. the waterproof structure of the hole opening of the rectangular push pipe tunnel with the ultra-large section clearly distinguishes the difference of the waterproof structures of the starting well hole outlet device and the receiving well hole inlet device, and is provided with a perfect waterproof structure and an emergency waterproof measure, so that emergency burst waterproof treatment is realized on the basis of meeting common waterproof requirements.
2. The waterproof structure of the tunnel portal of the rectangular pipe-jacking tunnel with the oversized section is characterized in that a curtain cloth rubber plate is arranged at the portal interface, and the curtain cloth rubber plate is arranged on an embedded steel ring in the portal by utilizing a shield tail brush structure and combining a turning plate with a pin bush and a thick steel plate to form a double flexible waterproof layer.
3. According to the waterproof structure of the oversized-section rectangular pipe-jacking tunnel entrance, the grouting pipe is reserved between the double-layer flexible waterproof layers, and the first-stage waterproof structure and the second-stage waterproof structure form three-stage waterproofness by matching the cord fabric rubber plate with the grouting pipe, so that a good grouting waterproof function is achieved.
4. The invention combines a grouting film bag method, and emergency waterproof measures are arranged in a hole outlet device and a hole inlet device.
Drawings
The foregoing and/or other advantages of the invention will become further apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view of a waterproof structure of a pipe jacking initial well hole discharging device.
Fig. 2 is a schematic diagram showing the function of a waterproof structure when a push pipe originating well is out of a hole.
FIG. 3 is a process diagram of the waterproof structure acting when the jacking pipe initial well goes out of the hole.
FIG. 4 is a schematic view of a waterproof structure of the pipe jacking receiving well hole entering device.
Fig. 5 is a schematic view showing the function of the waterproof structure when the jacking pipe enters the hole.
FIG. 6 is a process diagram of the waterproof structure functioning when the jacking pipe enters the hole.
FIG. 7 is a diagram showing the effect of emergency water-proof measures when the jacking pipe goes out of the hole.
FIG. 8 is a diagram showing the effect of emergency water-proof measures when the jacking pipe enters the tunnel.
Wherein each reference numeral represents:
1, an initial well hole-discharging device; 11, a primary waterproof structure is formed; 111 turning plate; 112, discharging a primary cord fabric rubber plate; 113 a hole primary bolt module; 114 a pin bush; 12, a secondary waterproof structure for the hole; 121 punching steel plates; 122, discharging a secondary cord fabric rubber plate; 123, a secondary bolt module with a hole; 124, producing a hole cord fabric rubber plate; 13, a three-level waterproof structure for hole discharging; 131, discharging holes and embedding grouting pipes; 132, discharging a hole, and embedding a steel ring plate; 133, discharging and pre-burying an emergency grouting pipe; 134 discharging and grouting a film bag; 2 receiving a well hole entering device; 21 entering a hole primary waterproof structure; 211 a steel plate entering the hole; 212 entering a hole, namely a first-level cord fabric rubber plate; 213 enter hole first level bolt module; 214 into the hole cord fabric rubber plate; 22 entering the hole to form a secondary waterproof structure; 221 entering a hole of a secondary cord fabric rubber plate; 222, pressing a plate; 223 enter hole second level bolt module; 23 entering the hole to form a three-level waterproof structure; 231, pre-burying a grouting pipe in the hole; 232, pre-burying a steel ring plate in the hole; 233 entering the hole and pre-burying an emergency grouting pipe; 234 entering a hole and grouting a film bag; 3, a side wall of the well wall; 4, embedding a steel ring in advance; and 5, anchoring ribs.
Detailed Description
The invention will be better understood from the following examples.
The structures, proportions, and dimensions shown in the drawings and described in the specification are for the understanding of those skilled in the art, and are not intended to limit the scope of the present invention, which is defined in the appended claims, so they are not essential to the technology, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy and attainment of the same, are intended to fall within the scope of the invention. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
The invention relates to a waterproof structure of an oversized-section rectangular pipe-jacking tunnel portal (9.82m multiplied by 5.92m) of a downward-crossing river, which comprises an originating well hole-exiting device 1 and a receiving well hole-entering device 2.
Fig. 1 is a schematic diagram of a waterproof structure of a pipe jacking initial well hole outlet device 1, which comprises a three-stage waterproof structure. The hole-outlet first-stage waterproof structures 11 are arranged in a group annularly at a hole opening and are fixed in the side wall 3 of the well wall through hole-outlet first-stage bolt modules 113; each of the first-level waterproof structure 11 includes a turning plate 111 and a first-level cord fabric rubber plate 112, which are arranged in a direction perpendicular to the direction of the hole, the turning plate 111 has a pin sleeve 114 and can rotate around the pin sleeve 114, and the turning plate 111 and the first-level cord fabric rubber plate 112 are sequentially arranged in the direction of the hole.
The secondary hole-outlet waterproof structures 12 are arranged in a group, are annularly far away from the hole opening, and are fixed on the embedded steel rings 4 on the side wall 3 of the well wall through the secondary hole-outlet bolt modules 123; each of the second-stage hole waterproof structures 12 includes a hole steel plate 121 and a second-stage hole cord fabric rubber plate 122 arranged perpendicular to the hole direction, the hole steel plate 121 and the second-stage hole cord fabric rubber plate 122 are sequentially arranged along the hole direction, and the cord fabric rubber plates 124 cooperating with the third-stage hole waterproof structure are arranged in opposite directions to form a herringbone structure with the second-stage hole cord fabric rubber plate 122.
The hole-outlet three-stage waterproof structure 13 is positioned between the hole-outlet first-stage waterproof structure 11 and the hole-outlet second-stage waterproof structure 12 and comprises a group of hole-outlet embedded grouting pipes 131 and hole-outlet embedded steel ring plates 132 which are embedded in the side wall 3 of the well wall; the hole outlet pre-buried steel ring plate 132 is positioned on the sidewall 3 of the well wall and supported at the bottom of the hole outlet pre-buried grouting pipe 131; the hole-outlet first-stage bolt module 113 fixes the turning plate 111, the hole-outlet first-stage cord fabric rubber plate 112 and the hole-outlet embedded steel ring plate 132 at the hole.
The tunnel outlet emergency waterproof structure is matched with the tunnel outlet three-stage waterproof structure 13 and is positioned between the tunnel outlet first-stage waterproof structure and the tunnel outlet second-stage waterproof structure; the exit emergency waterproof structure comprises a group of exit pre-buried emergency grouting pipes 133 corresponding to the pre-buried grouting pipes in the exit tertiary waterproof structure 13 and an exit grouting film bag 134 embedded on the side wall 3 of the well wall, and under emergency conditions, expandable materials can be filled into the exit grouting film bag 134 through the exit pre-buried emergency grouting pipes 133 to block the pores between the jacking pipes and the well wall;
fig. 2 is a schematic diagram showing the function of the waterproof structure when the push pipe starts to exit from the well, when the push pipe passes through the tunnel door, the push pipe drives the turning plate 111 to turn around the pin sleeve 113 in the jacking direction, and the turning plate 111 drives the exit first-stage cord fabric rubber plate 112 to bend together in the jacking direction, so as to form the first-stage waterproof structure of the exit device. Further, the pipe jacking machine head contacts the secondary curtain cloth rubber plate 122, so that the secondary curtain cloth rubber plate 122 is bent towards the jacking direction, the steel plate 121 does not play a role at the moment, but when water flows infiltrate from the opposite direction of the jacking direction, the steel plate 121 prevents the secondary curtain cloth rubber plate 122 from being bent along the opposite direction of the jacking direction, and a secondary waterproof structure is formed. Meanwhile, when the machine head touches the secondary waterproof structure, the outlet pre-buried grouting pipe 131 continuously performs grouting to the machine head position, the grouting position is a gap formed between the outlet primary cord fabric rubber plate 112 and the outlet cord fabric rubber plate 124, and a tertiary waterproof structure is formed under the matching of the outlet pre-buried steel ring plate 132. Finally, in emergency, the emergency waterproof measure goes out hole grouting film bag 134 and plays a role, and the emergency grouting pipe 133 is used for adding a material capable of foaming and expanding rapidly into the hole grouting film bag 134 to plug the hole door.
FIG. 3 is a process diagram of a pipe jacking starting well during hole punching, wherein A is a state before the machine head is punched, B is a state when the machine head passes through a hole ring, and C is a state after the machine head is punched.
Fig. 4 is a schematic diagram of a waterproof structure of the pipe jacking receiving well hole entering device 2, which comprises a three-stage waterproof structure. The hole-entering primary waterproof structures 21 are a group, are annularly arranged away from the hole opening, and are fixed on the embedded steel rings 4 on the side wall 3 of the well wall through the hole-entering primary bolt modules 213; each hole-entering primary waterproof structure 21 comprises a hole-entering steel plate 211 and a hole-entering primary cord fabric rubber plate 212 which are perpendicular to the hole-entering direction, the hole-entering steel plate 211 and the hole-entering primary cord fabric rubber plate 212 are sequentially arranged along the hole-entering direction, the hole-entering cord fabric rubber plates 214 matched with the three-stage waterproof structure are arranged in opposite directions, and a herringbone structure is formed by the hole-entering primary cord fabric rubber plates 212.
The hole-entering secondary waterproof structures 22 are a group, are annularly arranged at the hole opening and are fixed in the sidewall 3 of the well wall through the hole-entering secondary bolt modules 223, each hole-entering secondary waterproof structure 22 comprises a hole-entering secondary cord fabric rubber plate 221 and a pressing plate 222 which are arranged in the direction perpendicular to the hole-entering direction, and the hole-entering secondary cord fabric rubber plate 221 and the pressing plate 222 are sequentially arranged in the hole-entering direction.
The hole-entering tertiary waterproof structure 23 is positioned between the hole-entering primary waterproof structure 21 and the hole-entering secondary waterproof structure 22 and comprises a group of hole-entering pre-embedded grouting pipes 231 and hole-entering pre-embedded steel ring plates 232 which are embedded in the side walls 3 of the well wall, and the hole-entering pre-embedded steel ring plates 232 are positioned in the side walls 3 of the well wall and supported at the bottoms of the hole-entering pre-embedded grouting pipes 231; the hole-entering secondary bolt module 223 fixes the hole-entering secondary cord fabric rubber plate 221, the pressing plate 222 and the hole-entering embedded steel ring plate 232 at the hole.
The tunnel entering emergency waterproof structure is matched with the tunnel entering three-stage waterproof structure 23; the hole-entering emergency waterproof structure is positioned between the hole-entering primary waterproof structure and the hole-entering secondary waterproof structure; the emergent waterproof structure of entering the hole comprises a group of pre-buried emergent grouting pipes 233 of entering the hole corresponding to the pre-buried grouting pipes in the tertiary waterproof structure 23 of entering the hole and a hole-entering grouting film bag 234 embedded on the side wall 3 of the well wall, under the emergency condition, expandable materials can be filled into the hole-entering grouting film bag 234 through the pre-buried emergent grouting pipes 233 of exiting the hole to seal the holes between the jacking pipes and the well wall
Fig. 5 is a schematic view showing the function of the waterproof structure when the jacking pipe enters the hole. For the hole outlet device, the first contact of the pipe jacking machine head is the hole inlet steel plate 211, the steel plate 211 is bent, the pipe joint is further contacted with the cord fabric rubber plate 213, the cord fabric rubber plate 213 is bent, the hole inlet first-level cord fabric rubber plate 212 can be attached to the pipe joint under the action of water pressure, but the hole inlet first-level cord fabric rubber plate 212 is only bent towards the jacking direction at the lower half part due to the fixation of the hole inlet steel plate 211, and a first-level waterproof structure is formed. The machine head continues to be jacked, the machine head contacts the second-level cord fabric rubber plate 221 of the jacked hole, under the fixing action of the pressure plate 222, the second-level cord fabric rubber plate 221 of the jacked hole is only bent towards the jacking direction at the lower half part, and the protrusion at the end part of the lower half part of the cord fabric rubber plate has a blocking effect on water flow permeating from the opposite direction of the jacking direction, so that a second-level waterproof structure is formed. Meanwhile, when the machine head touches the secondary waterproof structure, the hole-entering pre-embedded grouting pipe 231 continuously performs grouting to the position of the machine head, the grouting position is a gap formed between the hole-entering cord fabric rubber plate 214 and the hole-entering secondary cord fabric rubber plate 221, and a tertiary waterproof structure is formed under the matching of the hole-entering pre-embedded steel ring plate 232. Finally, in an emergency, the emergency waterproof measures enter the hole grouting film bag 234 to play a role, and the emergency grouting pipe 233 is used for adding a material capable of foaming and expanding rapidly into the hole grouting film bag 234 to plug the hole door.
FIG. 6 is a process diagram of the pipe jacking starting well entering the hole, wherein D is the state before the machine head enters the hole, and E is the state when the machine head enters the hole ring.
Fig. 7 is a schematic diagram showing the emergency waterproof measure of the push pipe exit device, and expandable material is injected into the exit grouting film bag 134 through the exit pre-embedded emergency grouting pipe 133, so that the grouting film bag expands rapidly, and all pores between the exit primary waterproof structure and the exit secondary waterproof structure are filled, thereby completing emergency water shutoff.
Fig. 8 is a schematic diagram showing the emergency waterproof measure of the pipe jacking and pipe entering device, expandable materials are injected into the hole entering grouting film bag 234 through the hole entering pre-embedded emergency grouting pipe 233, so that the grouting film bag expands rapidly, all pores between the hole entering primary waterproof structure and the hole entering secondary waterproof structure are filled, and emergency water plugging is completed.
And anchor bars 5 are arranged in the side wall 3 of the well wall and are vertical to the direction of the hole outlet/inlet, so that the function of reinforcing the well wall is achieved. Each bolt module comprises a nut, a stud, a thick pressing plate and a gasket respectively and is used for fixing all levels of waterproof structures, M20X 100 studs in GB/T899-1986 are adopted to match with M22 nuts, GB95/85-M20-100HV washers and the thick pressing plate in GB/T41-1986.
The invention provides a thought and a method for a waterproof structure of an oversized-section rectangular pipe-jacking tunnel portal for passing through a river downwards, and particularly provides a plurality of methods and ways for realizing the technical scheme. All the components not specified in the present embodiment can be realized by the prior art.
Claims (10)
1. A waterproof structure of an oversized section rectangular pipe-jacking tunnel portal of a downward-crossing river is characterized by comprising an originating well hole outlet device (1) and a receiving well hole inlet device (2);
the starting well hole outlet device (1) comprises a hole outlet primary waterproof structure (11), a hole outlet secondary waterproof structure (12) and a hole outlet tertiary waterproof structure (13); the hole primary waterproof structures (11) are arranged in a group annularly at the hole opening and fixed at the hole opening of the side wall (3) of the well wall through bolt modules, and each hole primary waterproof structure (11) comprises a turning plate (111) and a hole primary cord fabric rubber plate (112) which are arranged in the direction perpendicular to the hole opening direction; the hole-outlet secondary waterproof structures (12) are a group, are annularly arranged away from the hole opening and are fixed on the side wall (3) of the well wall through bolt modules, and each hole-outlet secondary waterproof structure (12) comprises a hole-outlet steel plate (121) and a hole-outlet secondary cord fabric rubber plate (122) which are arranged in the direction perpendicular to the hole outlet direction; the hole outlet tertiary waterproof structure (13) is positioned between the hole outlet primary waterproof structure (11) and the hole outlet secondary waterproof structure (12), and comprises a hole outlet curtain cloth rubber plate (124) which forms a herringbone structure with a hole outlet secondary curtain cloth rubber plate (122) in the hole outlet secondary waterproof structure (12), and a group of hole outlet embedded grouting pipes (131) embedded in the side wall (3) of the well wall;
the receiving well hole entering device (2) comprises a hole entering primary waterproof structure (21), a hole entering secondary waterproof structure (22) and a hole entering tertiary waterproof structure (23); the hole-entering primary waterproof structures (21) are arranged in a group, are annularly far away from the hole opening and are fixed on the side wall (3) of the well wall through bolt modules, and each hole-entering primary waterproof structure (21) comprises a hole-entering steel plate (211) and a hole-entering primary cord fabric rubber plate (212) which are arranged in the direction perpendicular to the hole-entering direction; the hole-entering secondary waterproof structures (22) are a group, are annularly arranged at the hole opening and are fixed at the hole opening of the side wall (3) of the well wall through bolt modules, and each hole-entering secondary waterproof structure (22) comprises a hole-entering secondary cord fabric rubber plate (221) and a pressing plate (222) which are arranged in the direction perpendicular to the hole entering direction; the hole-entering three-stage waterproof structure (23) is positioned between the hole-entering first-stage waterproof structure (21) and the hole-entering second-stage waterproof structure (22), and comprises a hole-entering cord fabric rubber plate (214) which forms a herringbone structure with a hole-entering first-stage cord fabric rubber plate (212) in the hole-entering first-stage waterproof structure (21), and a group of hole-entering embedded grouting pipes (231) embedded in the well wall side wall (3).
2. The waterproof structure of the entrance to the cave of the ultra-large section rectangular pipe-jacking tunnel for the underpass river according to claim 1, further comprising an exit emergency waterproof structure matched with the exit tertiary waterproof structure (13) and an entrance emergency waterproof structure matched with the entrance tertiary waterproof structure (23); the exit emergency waterproof structure is positioned between the exit primary waterproof structure and the exit secondary waterproof structure; the hole-entering emergency waterproof structure is positioned between the hole-entering primary waterproof structure and the hole-entering secondary waterproof structure;
the emergent exit waterproof structure comprises a group of exit pre-buried emergency grouting pipes (133) corresponding to pre-buried grouting pipes in the three-level exit waterproof structure (13) and exit grouting film bags (134) embedded on the side walls (3) of the well wall, and under the emergency condition, expandable materials are filled into the exit grouting film bags (134) through the exit pre-buried emergency grouting pipes (133) to block the pores between the top pipes and the well wall;
the emergent waterproof structure of advancing hole includes a set of and advances the pre-buried emergent slip casting pipe (233) of advancing hole and inlay advance hole slip casting membrane bag (234) on wall of a well side wall (3) corresponding to pre-buried slip casting pipe in advancing the tertiary waterproof structure of hole (23), under emergent condition, advances hole slip casting membrane bag (234) to fill expandable material through the pre-buried emergent slip casting pipe (233) of going out of the hole, the hole between shutoff push pipe and the wall of a well.
3. The waterproof structure of the entrance to the cave of the ultra-large section rectangular pipe-jacking tunnel for the underpass river according to claim 1 or 2, wherein in the first-level waterproof structure (11) for the cave, a turning plate (111) and a first-level cord fabric rubber plate (112) for the cave are fixed in the side wall (3) of the well wall through a first-level bolt module (113) for the cave; the turning plate (111) is provided with a pin sleeve (114) and can rotate around the pin sleeve (114), and the turning plate (111) and the primary cord fabric rubber plate (112) with the hole are sequentially arranged along the hole outlet direction.
4. The waterproof structure of the entrance to the cave of the ultra-large section rectangular pipe-jacking tunnel for the underpass river according to claim 1 or 2, characterized in that in the secondary exit-cave waterproof structure (12), an exit-cave steel plate (121), an exit-cave secondary cord fabric rubber plate (122) and an exit-cave cord fabric rubber plate (124) are fixed on an embedded steel ring (4) on the sidewall (3) of the well wall through an exit-cave secondary bolt module (123); the hole-discharging steel plate (121) and the hole-discharging secondary cord fabric rubber plate (122) are sequentially arranged along the hole-discharging direction, the hole-discharging cord fabric rubber plate (124) matched with the tertiary waterproof structure (13) is arranged in the opposite direction, and the hole-discharging cord fabric rubber plate (124) and the hole-discharging secondary cord fabric rubber plate (122) form a herringbone rubber plate structure, so that the hole-discharging secondary waterproof structure (12) is combined with the hole-discharging tertiary waterproof structure (13).
5. The waterproof structure of the entrance to the cave of the ultra-large section rectangular pipe-jacking tunnel for the underpass river as claimed in claim 3, wherein the three-stage waterproof structure (13) for the exit tunnel further comprises an exit pre-buried steel ring plate (132), and the exit pre-buried steel ring plate (132) is positioned on the sidewall (3) of the shaft wall and supported at the bottom of the exit pre-buried grouting pipe (131); the hole-outlet primary bolt module (113) fixes the turning plate (111), the hole-outlet primary cord fabric rubber plate (112) and the hole-outlet embedded steel ring plate (132) at the hole.
6. The waterproof structure of the entrance to the cave of the ultra-large section rectangular pipe-jacking tunnel for the underpass river according to claim 1 or 2, characterized in that in the entrance-to-cave primary waterproof structure (21), an entrance-to-cave steel plate (211) and an entrance-to-cave primary cord fabric rubber plate (212) are fixed on an embedded steel ring (4) on the side wall (3) of the well wall through an entrance-to-cave primary bolt module (213); the hole entering steel plate (211) and the hole entering primary cord fabric rubber plate (212) are sequentially arranged along the hole entering direction, the hole entering cord fabric rubber plate (214) matched with the hole entering tertiary waterproof structure (23) is arranged in the opposite direction, and the hole entering cord fabric rubber plate (214) and the hole entering primary cord fabric rubber plate (122) form a herringbone rubber plate structure, so that the hole entering primary waterproof structure (21) is combined with the hole entering tertiary waterproof structure (23).
7. The waterproof structure of the entrance to the cave of the ultra-large section rectangular pipe-jacking tunnel for the underpass river according to claim 1 or 2, characterized in that in the entrance to the cave secondary waterproof structure (22), the entrance to the cave secondary curtain cloth rubber plate (221) and the pressing plate (222) are fixed in the sidewall (3) of the well wall through an entrance to the cave secondary bolt module (223), and the entrance to the cave secondary curtain cloth rubber plate (221) and the pressing plate (222) are sequentially arranged along the entrance to the cave direction.
8. The waterproof structure of the entrance to the cave of the ultra-large section rectangular push pipe tunnel of the underpass river as claimed in claim 6, wherein the three-stage waterproof structure (23) of the entrance to the cave further comprises an entrance to the cave embedded steel ring plate (232), and the entrance to the cave embedded steel ring plate (232) is positioned on the sidewall (3) of the shaft wall and supported at the bottom of the entrance to the cave embedded grouting pipe (231); and the hole-entering secondary bolt module (223) fixes the hole-entering secondary cord fabric rubber plate (221), the pressing plate (222) and the hole-entering embedded steel ring plate (232) at the hole.
9. The waterproof structure of the entrance to the cave of the ultra-large section rectangular pipe-jacking tunnel for the underpass river according to claim 1 or 2, wherein an anchor bar (5) is arranged in the side wall (3) of the well wall and is vertical to the exit/entrance direction.
10. The waterproof structure of the tunnel portal of the ultra-large section rectangular top pipe tunnel of the underpass river as claimed in claim 1 or 2, wherein each bolt module comprises a nut, a stud, a thick pressing plate and a gasket respectively, and is used for fixing each level of waterproof structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148213.9A CN112901221B (en) | 2021-02-03 | 2021-02-03 | Waterproof structure of ultra-large section rectangular pipe-jacking tunnel portal of underpass river |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148213.9A CN112901221B (en) | 2021-02-03 | 2021-02-03 | Waterproof structure of ultra-large section rectangular pipe-jacking tunnel portal of underpass river |
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| CN112901221B true CN112901221B (en) | 2022-09-02 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793611B (en) * | 2005-12-27 | 2010-05-12 | 上海市隧道工程轨道交通设计研究院 | Water-proof method for shield tunnel outlet |
| CN1793613A (en) * | 2005-12-27 | 2006-06-28 | 上海市隧道工程轨道交通设计研究院 | Auto-adjustable waterproof device for shield tunnel outlet |
| CN101338680B (en) * | 2008-08-08 | 2010-09-15 | 上海市隧道工程轨道交通设计研究院 | Construction method for pretightening digging tunnel segment |
| CN109441492A (en) * | 2018-12-28 | 2019-03-08 | 中铁隧道集团三处有限公司 | A kind of large section rectangular top pipe originates portal dynamic water-proof device |
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