CN210768799U - Main body structure construction system at intersection of main line tunnel and construction transverse channel - Google Patents

Main body structure construction system at intersection of main line tunnel and construction transverse channel Download PDF

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CN210768799U
CN210768799U CN201921869252.2U CN201921869252U CN210768799U CN 210768799 U CN210768799 U CN 210768799U CN 201921869252 U CN201921869252 U CN 201921869252U CN 210768799 U CN210768799 U CN 210768799U
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tunnel
brick wall
construction
wall
secondary lining
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徐重之
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Rail Transit Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
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Rail Transit Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
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Abstract

The utility model discloses a main part structure construction system of main line tunnel and construction cross passage intersection, include: the first brick wall is built on the left side of the right tunnel; the right tunnel secondary lining comprises a bottom plate, a vault and side walls, and vacant places among the outer contour of the right tunnel secondary lining, the first brick wall and the primary support structure are backfilled by plain concrete in sections; the second brick wall is built on the right side of the left tunnel, a concrete pouring hole is formed in the top of the second brick wall, and plain soil is used for backfilling the space between the left tunnel and the right tunnel; the third brick wall is built on the left side of the left line tunnel; the left line tunnel secondary lining comprises a left line tunnel secondary substrate plate, a left line tunnel secondary lining vault and side walls, and vacant places among the left line tunnel secondary lining, the brick walls on two sides and the transverse channel primary support structure are backfilled with plain concrete in a segmented mode; and the grouting perforated pipe is arranged at the vault position of the construction transverse channel. The utility model discloses safe, reliable, practical has solved positive line tunnel and construction cross passage "two cross" main part structure construction difficult problems effectively.

Description

Main body structure construction system at intersection of main line tunnel and construction transverse channel
Technical Field
The utility model relates to an underground works field especially relates to a main part structure construction system of main line tunnel and construction cross passage intersection.
Background
In the construction process of urban subway and mine method tunnels, due to the limitation of geographical conditions and construction conditions, a method of constructing a construction transverse channel firstly and then constructing a main double-line (left line and right line) tunnel from the construction transverse channel to two sides is generally adopted (the construction transverse channel is usually an arch top straight wall double-layer pilot tunnel and additionally provided with a temporary inverted arch structure, and is generally only constructed as a primary support structure, and the main tunnel is usually a standard horseshoe-shaped structure and comprises a primary support structure and a secondary lining). The structure of the intersection is complex, which causes the construction difficulty of the main body structure (two linings) of the main body structure of the main body of the.
SUMMERY OF THE UTILITY MODEL
The utility model discloses mainly be to prior art's not enough, provide a positive line tunnel and construction cross passage intersection major structure construction system, have advantages such as safe, reliable, practical, solved positive line tunnel and construction cross passage "two cross" intersection major structure construction difficult problems effectively, have very high practical value and spreading value.
The utility model discloses the technical scheme who adopts does: a main body structure construction system at the intersection of a main tunnel and a construction cross passage comprises:
the first brick wall is built on the left side of the right tunnel;
the right tunnel secondary lining comprises a right tunnel secondary substrate plate, a right tunnel secondary lining arch top and a side wall, and vacant places between the outer contour of the right tunnel secondary substrate plate and the first brick wall and the transverse channel primary support structure and vacant places between the right tunnel secondary lining arch top and the side wall and the first brick wall and the transverse channel primary support structure are backfilled with plain concrete in a segmented mode;
the first grouting perforated pipe is arranged above the arch top and the side wall of the secondary lining of the right tunnel and at the arch top of the construction transverse channel;
the second brick wall is built on the right side of the left linear tunnel, a concrete pouring hole is formed in the top of the second brick wall, the space between the left linear tunnel and the right linear tunnel is backfilled with plain soil and tamped layer by layer until the second brick wall is stopped at a distance from the vault of the construction cross channel, and the remaining vacant space of the vault of the construction cross channel between the first brick wall and the second brick wall is backfilled with plain concrete;
the second grouting perforated pipe is arranged at the vault position of the construction transverse channel between the tunnel portal of the left tunnel and the tunnel portal of the right tunnel;
the third brick wall is built on the left side of the left line tunnel;
the left line tunnel secondary lining comprises a left line tunnel secondary substrate plate, a left line tunnel secondary lining arch top and a side wall, vacant places among the left line tunnel secondary substrate plate, the second brick wall, the third brick wall and the transverse channel primary support structure and vacant places among the left line tunnel secondary substrate plate, the second brick wall, the third brick wall and the transverse channel primary support structure are backfilled by plain concrete in a segmented mode, and the vacant places among the left line tunnel secondary lining arch top and the side wall, the second brick wall, the third brick wall and the transverse channel primary support structure are backfilled by plain concrete in a segmented mode;
and the third grouting perforated pipe is arranged above the arch top of the secondary lining of the left tunnel and the side wall and at the arch top of the construction transverse channel.
The utility model discloses in some embodiments of construction system, two underboards in right side line tunnel waterproof with two underboards in left side line tunnel are waterproof including geotechnological cloth and plastics waterproof board to be equipped with the protective layer.
The utility model discloses in some embodiments of construction system, two bottom plate water-proofings in right side line tunnel and two bottom plate water-proofings in left side line tunnel reserve out enough get rid of and rub length with the hands, supply two lining vault and side wall water-proofings in overlap joint right side line tunnel and two lining vault and side wall water-proofings in left side line tunnel.
The utility model discloses in some embodiments of construction system, two lining vaults and side wall waterproof in right side line tunnel and two lining vaults and side wall waterproof in left side line tunnel include geotechnological cloth and plastics waterproof board.
The utility model discloses in some embodiments of construction system, backfill the vacant place between two substrate board outlines in right side line tunnel and first brick wall and the horizontal channel primary structure with two linings in right side line tunnel with the plain concrete of mark, prop up when backfilling and establish two lining inside forms in right side line tunnel.
The utility model discloses in some embodiments of construction system, backfill the vacant place between two backing plates in left line tunnel and second brick wall, third brick wall and the horizontal channel primary support structure with two linings in left line tunnel with the plain concrete of mark, prop up when backfilling and establish two lining inner formworks in left line tunnel.
In some embodiments of the construction system of the present invention, the first brick wall and the closing end wall of the construction transverse channel are symmetrically arranged along the central line of the right tunnel; the first brick wall and the second brick wall are symmetrically arranged along a center line between the left tunnel portal and the right tunnel portal; the second brick wall and the third brick wall are symmetrically arranged along the center line of the left tunnel.
The utility model discloses in some embodiments of construction system, two backing plates in right side line tunnel with the outline elevation of two backing plates in left side line tunnel 300mm above the tunnel rail top elevation.
The utility model discloses in some embodiments of construction system, the top of first brick wall with concrete placement hole is reserved at the top of second brick wall, first slip casting floral tube the third slip casting floral tube is installed respectively in reserving concrete placement hole.
The utility model provides a can implement and demolish construction method's construction system who utilizes brick wall built segmentation shutoff behind the interim invert of construction cross passageway, have advantages such as safe, reliable, practical, solved positive line tunnel and construction cross passageway "two cross" intersection major structure construction difficult problems effectively, have very high practical value and spreading value.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flow chart of a construction method of a main structure construction system at the intersection of a main tunnel and a construction cross passage in the embodiment of the invention.
Fig. 2 is a longitudinal section of the main structure construction system at the intersection of the main tunnel and the construction cross channel along the longitudinal direction of the construction cross channel.
Fig. 3 is the utility model discloses the transversal plus tunnel department longitudinal section of following construction cross passage of plus tunnel and construction cross passage main part structure construction system of embodiment.
Fig. 4 is the utility model discloses the horizontal construction cross passage department longitudinal section of main part structure construction system rear edge construction cross passage of main part.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
At present, in the construction of double-line (left line and right line) of a positive line tunnel, a method of constructing a construction transverse channel firstly and then constructing the positive line double-line (left line and right line) tunnel to two sides from the construction transverse channel is generally adopted, the construction transverse channel is usually an arch crown straight wall double-layer pilot hole additionally provided with a temporary inverted arch structure, and is generally only constructed as a primary support structure; the main line tunnel is usually a standard horseshoe-shaped structure comprising a primary support structure and a secondary lining, and is constructed according to the method, so that the cross-shaped part of the main line double-line tunnel and the construction transverse channel is in a double cross shape. The structure of the intersection is complex, which causes the construction difficulty of the main body structure (two linings) of the main body structure of the main body of the.
To this intersection main structure of main line tunnel (hereinafter be abbreviated as "two lining") construction, at first provided a construction the utility model discloses a construction system demolish construction method of utilizing the shutoff of brick wall segmentation behind the interim inverted arch of construction cross passage.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-4 at first, the embodiment of the utility model provides a main structure construction method of intersection of main tunnel and construction cross channel, mainly includes the following steps:
step S1: breaking a temporary inverted arch in the range of the right tunnel, and building a first brick wall on the left side of the right tunnel;
step S2: treating the base surface of the two substrate plates of the right tunnel and preventing water;
step S3: backfilling the vacant space between the outer contour of the second substrate plate of the right-side tunnel and the first brick wall and the primary support structure of the transverse channel with plain concrete;
step S4: sequentially constructing a second substrate plate of the right-side tunnel, a second liner vault and a side wall of the right-side tunnel, and installing a first grouting perforated pipe at the vault position of the construction transverse channel;
step S5: backfilling the spare parts between the arch crown and the side wall of the secondary lining of the right tunnel and the first brick wall and the primary support structure of the transverse channel with plain concrete, and then grouting and compacting through a first grouting perforated pipe;
step S6: breaking temporary inverted arches between the left tunnel portal and the right tunnel portal and in the range of the left tunnel, building a second brick wall on the right side of the left tunnel and reserving a concrete pouring hole at the top;
step S7: backfilling the place between the left tunnel and the right tunnel with plain soil, tamping the plain soil in layers until the plain soil stops at a distance from the vault of the construction transverse channel, and installing a second grouting perforated pipe at the vault of the construction transverse channel;
step S8: backfilling the remaining vacant place of the vault of the construction transverse channel between the first brick wall and the second brick wall by plain concrete through the reserved concrete pouring hole, and then grouting and compacting by a second grouting perforated pipe;
step S9: building a third brick wall on the left side of the left line tunnel;
step S10: treating the base surface of the two substrate plates of the left line tunnel and preventing water;
step S11: backfilling vacant places among the second substrate plate of the left-line tunnel, the second brick wall, the third brick wall and the primary support structure of the transverse channel with plain concrete;
step S12: sequentially constructing a second substrate plate of the left-line tunnel, a second substrate arch crown and a side wall of the left-line tunnel, and installing a third grouting perforated pipe at the arch crown of the construction transverse channel;
step S13: and backfilling vacant places among the arch crown and the side wall of the secondary lining of the left tunnel, the second brick wall, the third brick wall and the primary support structure of the transverse channel with plain concrete, and then grouting and compacting through a third grouting perforated pipe.
Wherein, the right side tunnel is close to the end wall of the horizontal passageway of construction for the left side tunnel. The first brick wall 11 and the end sealing wall of the construction transverse channel are symmetrically arranged along the center line of the right tunnel; the first brick wall 11 and the second brick wall 12 are symmetrically arranged along the center line between the left tunnel portal and the right tunnel portal; the second brick wall 12 and the third brick wall 13 are symmetrically arranged along the center line of the left tunnel.
Based on the construction method of the main body structure at the intersection of the main tunnel and the construction transverse passage in the embodiment, a construction system of the main body structure at the intersection of the main tunnel and the construction transverse passage is obtained, as shown in fig. 2 to 4, and the construction method mainly comprises the following steps:
and the first brick wall 11 is built on the left side of the right tunnel.
The right tunnel secondary lining 30 comprises a right tunnel secondary substrate plate, a right tunnel secondary lining arch top and a side wall, and vacant places between the outer contour of the right tunnel secondary substrate plate and the first brick wall 11 and the transverse channel primary support structure 20 and vacant places between the right tunnel secondary lining arch top and the side wall and the first brick wall 11 and the transverse channel primary support structure 20 are filled with plain concrete A (plain concrete with the same label as the positive tunnel secondary lining) in a segmented mode.
And the first grouting floral tube 141 is arranged above the second lining vault and the side wall of the right tunnel and at the vault position of the construction cross passage, and after the backfilled plain concrete reaches a certain strength, the gap is filled with slurry through the pre-buried grouting floral tube.
And a second brick wall 12 which is built on the right side of the left linear tunnel 40 and provided with a concrete pouring hole 120 at the top, the place between the left linear tunnel and the right linear tunnel is backfilled with plain soil D and tamped layer by layer until the place is stopped at a distance (1.5m) away from the vault of the construction cross channel, and the remaining vacant place of the vault of the construction cross channel between the first brick wall 11 and the second brick wall 12 is backfilled with plain concrete B (C15 plain concrete).
The second grouting perforated pipe 142 is arranged at the vault position of the construction transverse channel between the tunnel doors of the left tunnel and the right tunnel, and after the C15 plain concrete reaches a certain strength, the gap is filled with pre-embedded grouting perforated pipe grouting slurry;
a third brick wall 13 built on the left side of the left line tunnel;
the left line tunnel secondary lining 40 comprises a left line tunnel secondary substrate plate, a left line tunnel secondary lining vault and a side wall, and vacant places among the left line tunnel secondary substrate plate, the second brick wall 12, the third brick wall 13 and the transverse channel primary support structure 20 are backfilled by plain concrete C (plain concrete with the same label as the positive line tunnel secondary lining) in a segmented mode, and the vacant places among the left line tunnel secondary lining vault and the side wall, the second brick wall 12, the third brick wall 13 and the transverse channel primary support structure 20 are backfilled;
and the third grouting floral tube 143 is installed above the second lining vault and the side wall of the left tunnel and at the vault position of the construction cross passage, and after the backfilled plain concrete reaches a certain strength, the gap is filled with the pre-buried grouting floral tube and the grout.
The following description of a specific operation procedure when the construction method of the above embodiment is applied with reference to fig. 2 to 4 is as follows:
firstly, breaking a temporary inverted arch 10 in the range of a right tunnel (close to a construction transverse passage end-sealed wall);
building a first brick wall 11 from bottom to top along the construction transverse passage structure on the left side of the right tunnel (the brick wall is symmetrical to the construction transverse passage end sealing wall along the middle line of the right tunnel, the brick wall is directly built to the top of the transverse passage from bottom to top, and a concrete pouring hole is reserved at the top of the transverse passage from bottom to top);
then processing the base surface of the second substrate plate of the right-line tunnel, and applying a waterproof layer 15 (geotextile, plastic waterproof plate and protective layer) on the second substrate plate of the right-line tunnel after the base surface is processed;
then, backfilling the vacant places between the outer contour of the second substrate plate of the right-side tunnel and the first brick wall 11 and the primary supporting structure 20 of the transverse channel by using plain concrete with the same mark of the second lining of the positive-side tunnel (an inner template needs to be supported in the step);
then, sequentially constructing two liner plates of the right tunnel (steel bar binding → formwork erecting (inner formwork) → concrete pouring → formwork stripping, concrete surfacing and maintenance);
sequentially constructing a vault and a side wall of the secondary lining of the right tunnel (base surface treatment → waterproof laying (geotextile and plastic waterproof board) → reinforcement → formwork erecting (inner formwork and outer formwork) → concrete pouring → formwork stripping, concrete face repairing and maintenance);
after the concrete of the second lining vault and the side wall of the right tunnel reaches certain strength, mounting pre-embedded grouting perforated pipes at the vault positions of the construction cross passages, backfilling vacant places between the second lining vault and the side wall of the right tunnel and the first brick wall 11 and the cross passage primary support structure 20 by using plain concrete of the same label of the second lining of the right tunnel after the mounting of the grouting perforated pipes is finished, and filling gaps by injecting cement slurry through the pre-embedded grouting perforated pipes after the backfilled plain concrete reaches certain strength;
then the temporary inverted arch 10 of the construction transverse channel between the left and right tunnel doors and in the influence range of the left tunnel is broken, building a second brick wall 12 close to the right side of the left tunnel and backfilling the space between the left tunnel and the right tunnel with plain soil, tamping in layers (the brick wall is symmetrical to the brick wall on the left side of the right tunnel along the center line between the left tunnel door and the right tunnel door, the brick wall is not directly built to the top, the brick wall is required to keep synchronous with the height of backfill earth during building, the backfill earth is backfilled while tamping is carried out until the distance between the backfill earth and the arch top of the cross passage is 1.5m, at the moment, the brick wall is built to the top of the cross passage and a concrete pouring hole 120 is reserved at the top position), installing pre-buried grouting floral tubes at the arch top of the cross passage after backfilling the earth, then, backfilling the remaining 1.5m vacant space of the arch part of the transverse channel between the two brick walls by using C15 plain concrete through the reserved concrete pouring holes, and filling the gaps by using pre-embedded grouting pipes and injecting cement slurry after the C15 plain concrete reaches a certain strength;
finally, building a third brick wall on the left side of the left tunnel (the brick wall is 50cm in thickness and is symmetrical to the brick wall on the right side of the left tunnel along the center line of the left tunnel, and is directly built to the top of the cross passage from bottom to top along the construction cross passage structure, and a concrete pouring hole is reserved at the top);
treating the base surface of the two substrate plates of the left-line tunnel, constructing waterproof 16 (geotextile, plastic waterproof plate and protective layer) of the two substrate plates of the left-line tunnel after the base surface treatment is finished, and backfilling the vacant places among the two substrate plates of the left-line tunnel, the brick walls at two sides and the primary support structure 20 of the transverse passage by using plain concrete with the same label of the secondary lining of the positive-line tunnel (an inner template needs to be erected in the step);
sequentially constructing two backing plates of the left tunnel (steel bar binding → formwork erecting (inner formwork) → concrete pouring → form removal, concrete face building and maintenance), sequentially constructing two lining arches and side walls of the left tunnel (base surface treatment → waterproof laying (geotextile + plastic waterproof plate) → steel bar binding → formwork erecting (inner formwork and outer formwork) → concrete pouring → form removal, concrete face building and maintenance), installing pre-buried grouting floral tubes at the arch tops of the construction transverse channels after the concrete of the two lining arches and the side walls of the left tunnel reaches a certain strength, backfilling the two lining arches and the side walls of the right tunnel and the first lining with plain concrete of the same mark of the two lining arches of the right tunnel after the grouting floral tubes are installed, and the vacant place between the second brick wall and the primary support structure of the transverse channel is filled with slurry through the pre-embedded grouting perforated pipe after the backfilled plain concrete reaches certain strength.
In the method, the left tunnel lining structure and the right tunnel lining structure comprise waterproof, reinforcing steel bars and concrete;
in the method, the first brick wall 11, the second brick wall 12 and the third brick wall 13 are built by clay bricks and masonry mortar, and the thickness is 500 mm;
in the method, a construction transverse passage between double-line (left line and right line) tunnel gates of a main tunnel is backfilled by rammed plain soil and C15 plain concrete, and grouting grout is injected into grouting pattern pipes pre-buried at the vault of the construction transverse passage to ensure the backfilling compactness.
In the method, the secondary lining waterproof of the main tunnel consists of geotextile and a plastic waterproof board, and during construction, the waterproof is laid along the inverted arch of the construction transverse channel, the bricked wall, the side wall of the construction transverse channel and the periphery of the arch crown; when the secondary lining bottom plate of the main tunnel is used for waterproofing, enough throwing and rubbing length needs to be reserved, and enough lapping length between the secondary lining bottom plate and vault and side wall waterproofing can be ensured.
In the method, the reinforcing bars of the secondary lining of the main tunnel are the same as the reinforcing bars of the standard horseshoe-shaped section in the design drawing, and the binding method is also the same;
in the method, the secondary lining outer contour of the main tunnel, a primary support structure of the construction cross passage and a brick wall are backfilled by using secondary lining concrete with the same mark as plain concrete required by a design drawing, and grouting is also pre-buried in the vault of the construction cross passage to inject slurry into a perforated pipe to ensure the backfilling compactness; an inner template needs to be erected during construction of two-substrate concrete (between an inner contour of a second substrate and an outer contour of the second substrate) of the front tunnel, and an inner template and an outer template need to be erected during construction of concrete of a vault and a side wall; during construction, the outer contour of the secondary lining bottom plate of the primary tunnel, the primary support structure of the construction cross channel and the brick wall are backfilled, then the secondary lining bottom plate of the primary tunnel is constructed, then the secondary lining vault and the side wall of the primary tunnel are constructed, and then the outer contour of the secondary lining vault and the side wall of the primary tunnel, the primary support structure of the construction cross channel and the brick wall are backfilled.
In the method, the external backfill of the outline of the second lining bottom plate of the main tunnel and the concrete of the second lining bottom plate of the main tunnel are both required to be poured to be 300mm above the elevation of the rail top.
The utility model provides a construction method has advantages such as safe, reliable, practical, has solved positive line tunnel and construction cross passage "two cross" intersection major structure construction difficult problems effectively, has very high practical value and spreading value.
It should be noted that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the equivalent embodiment without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims (9)

1. The utility model provides a main part structure construction system of main line tunnel and construction cross passage intersection which characterized in that includes:
the first brick wall is built on the left side of the right tunnel;
the right tunnel secondary lining comprises a right tunnel secondary substrate plate, a right tunnel secondary lining arch top and a side wall, and vacant places between the outer contour of the right tunnel secondary substrate plate and the first brick wall and the transverse channel primary support structure and vacant places between the right tunnel secondary lining arch top and the side wall and the first brick wall and the transverse channel primary support structure are backfilled with plain concrete in a segmented mode;
the first grouting perforated pipe is arranged above the arch top and the side wall of the secondary lining of the right tunnel and at the arch top of the construction transverse channel;
the second brick wall is built on the right side of the left linear tunnel, a concrete pouring hole is formed in the top of the second brick wall, the space between the left linear tunnel and the right linear tunnel is backfilled with plain soil and tamped layer by layer until the second brick wall is stopped at a distance from the vault of the construction cross channel, and the remaining vacant space of the vault of the construction cross channel between the first brick wall and the second brick wall is backfilled with plain concrete;
the second grouting perforated pipe is arranged at the vault position of the construction transverse channel between the tunnel portal of the left tunnel and the tunnel portal of the right tunnel;
the third brick wall is built on the left side of the left line tunnel;
the left line tunnel secondary lining comprises a left line tunnel secondary substrate plate, a left line tunnel secondary lining arch top and a side wall, vacant places among the left line tunnel secondary substrate plate, the second brick wall, the third brick wall and the transverse channel primary support structure and vacant places among the left line tunnel secondary substrate plate, the second brick wall, the third brick wall and the transverse channel primary support structure are backfilled by plain concrete in a segmented mode, and the vacant places among the left line tunnel secondary lining arch top and the side wall, the second brick wall, the third brick wall and the transverse channel primary support structure are backfilled by plain concrete in a segmented mode;
and the third grouting perforated pipe is arranged above the arch top of the secondary lining of the left tunnel and the side wall and at the arch top of the construction transverse channel.
2. The system for constructing a main body structure at the intersection of a main tunnel and a construction cross-channel of claim 1, wherein the right-side main floor panel waterproof and the left-side main floor panel waterproof comprise geotextiles and plastic waterproof panels, and are provided with protective layers.
3. The system of claim 2, wherein the waterproof of the second bottom plate of the right tunnel and the waterproof of the second bottom plate of the left tunnel are left to have a sufficient length for throwing and rubbing for overlapping the waterproof of the second bottom plate and the side wall of the right tunnel and the waterproof of the second bottom plate and the side wall of the left tunnel.
4. The main structure construction system at the intersection of a main tunnel and a construction cross channel of claim 3, wherein the right tunnel secondary lining vault and side wall waterproofing and the left tunnel secondary lining vault and side wall waterproofing comprise geotextiles and plastic waterproof boards.
5. The system of claim 1, wherein the left space between the outer contour of the second substrate plate of the right tunnel and the first brick wall and the primary supporting structure of the lateral channel is backfilled with plain concrete of the same mark as the second lining of the right tunnel, and an inner formwork of the second lining of the right tunnel is supported during backfilling.
6. The system of claim 1, wherein the left liner is used for backfilling the vacant spaces between the second liner plate of the left tunnel and the second brick wall, the third brick wall and the primary supporting structure of the transverse channel, and the inner formwork of the left liner is supported during backfilling.
7. The main structure construction system at the intersection of the main tunnel and the construction cross passage as claimed in claim 1, wherein the first brick wall and the closing end wall of the construction cross passage are symmetrically arranged along the center line of the right tunnel; the first brick wall and the second brick wall are symmetrically arranged along a center line between the left tunnel portal and the right tunnel portal; the second brick wall and the third brick wall are symmetrically arranged along the center line of the left tunnel.
8. The main body structure construction system at the intersection of the main tunnel and the construction cross channel as claimed in claim 1, wherein the outer contour elevations of the two substrate plates of the right-hand tunnel and the two substrate plates of the left-hand tunnel are 300mm above the elevation of the rail top of the tunnel.
9. The main body structure construction system at the intersection of an orthogonal tunnel and a construction cross channel of claim 1, wherein concrete casting holes are reserved at the top of the first brick wall and the top of the second brick wall, and the first grouting floral tube and the third grouting floral tube are respectively installed at the reserved concrete casting holes.
CN201921869252.2U 2019-11-01 2019-11-01 Main body structure construction system at intersection of main line tunnel and construction transverse channel Active CN210768799U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110593893A (en) * 2019-11-01 2019-12-20 中建八局轨道交通建设有限公司 Main body structure construction method and system for intersection of main tunnel and construction transverse channel
CN112211648A (en) * 2020-10-15 2021-01-12 中铁二局第二工程有限公司 High-ground-stress soft rock stratum tunnel intersection and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110593893A (en) * 2019-11-01 2019-12-20 中建八局轨道交通建设有限公司 Main body structure construction method and system for intersection of main tunnel and construction transverse channel
CN112211648A (en) * 2020-10-15 2021-01-12 中铁二局第二工程有限公司 High-ground-stress soft rock stratum tunnel intersection and construction method thereof

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