CN115110973B - Connecting channel pipe jacking construction backrest system and using method thereof - Google Patents
Connecting channel pipe jacking construction backrest system and using method thereof Download PDFInfo
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- CN115110973B CN115110973B CN202210881180.3A CN202210881180A CN115110973B CN 115110973 B CN115110973 B CN 115110973B CN 202210881180 A CN202210881180 A CN 202210881180A CN 115110973 B CN115110973 B CN 115110973B
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- oil cylinder
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
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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
Abstract
The invention discloses a linkage channel pipe-jacking construction backrest system and a use method thereof, wherein the backrest system comprises a reinforcing mechanism, a traction oil cylinder, a backrest mechanism and a pressure control console, the reinforcing mechanism is correspondingly arranged on the back soil side of a shield segment on the periphery of a starting tunnel opening and connects a plurality of shield segments on the periphery of the starting tunnel opening into a whole, the traction oil cylinder is horizontally arranged between the reinforcing mechanism and the backrest mechanism, the backrest mechanism is correspondingly arranged on one side of a shield tunnel far away from the starting tunnel opening, the wall surface of one side of the backrest mechanism close to the starting tunnel opening is used as a back-supporting surface of a propulsion oil cylinder to be connected with the fixed end of the propulsion oil cylinder in an abutting mode, and the pressure control console is connected with the traction oil cylinder and the propulsion oil cylinder through connecting pipelines and is used for balancing the pressure of the traction oil cylinder and the propulsion oil cylinder. The invention realizes the dispersed stress of the tunnel segment through the backrest system mainly based on traction, solves the problems of stress, deformation and overlarge segment joint dislocation of the shield tunnel structure, and effectively ensures the safety and the waterproofness of the shield tunnel structure.
Description
Technical Field
The invention relates to the technical field of interconnection channel pipe-jacking construction, in particular to an interconnection channel pipe-jacking construction backrest system and a using method thereof.
Background
Through development and utilization of urban underground spaces for many years, available resources of shallow underground spaces are less and less, especially in urban central areas, the underground depth of subway tunnels reaches 30 meters, and the trend that subway tunnels are buried deeper is obvious. After deep burying, the construction of the conventional mining method is more and more difficult when the underground water pressure is larger and the geological conditions are more and more complicated, and more mechanized construction tunnels represented by a shield method are adopted. In the existing GB50157-2013 subway design Specification, a contact channel is required to be arranged between two single-line interval tunnels in urban rail transit construction when the coherent length of the tunnels is more than 600m for fire evacuation. At present, branch tunnels such as an interconnection channel and the like are excavated by a mining method generally, particularly in a soft soil stratum, the periphery of the excavation needs to be reinforced within a certain range by grouting or freezing and other methods, the conventional freezing method has the problems of long construction period, high risk, high construction cost and the like, all parties basically keep the attitude of indiscriminate use of the quantity, and the development of mechanical construction equipment and construction method is a continuous pursuit of underground engineering workers all the time, and the mechanical construction is also a necessary way of improving the labor intensity of the construction workers and promoting the society.
When the contact channel is constructed by a mechanical method, a mechanical pipe jacking method is mostly adopted, the pipe jacking construction is necessary to exist in a rear backrest system, and the existing rear backrest system mostly adopts a pushing mode to act the thrust to the rear of the backrest. However, by adopting the method in the tunnel, the stress and deformation of the shield tunnel structure and the overlarge dislocation of the segment joints are easily caused, the safety of the shield tunnel structure is damaged, and the waterproof effect of the shield tunnel is reduced.
Disclosure of Invention
The invention aims to provide a connecting channel pipe jacking construction backrest system and a using method thereof, so as to solve the technical problems in the background technology.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a linkage passageway push pipe construction back system, includes reinforcement mechanism, tractive hydro-cylinder, back mechanism and pressure control platform, reinforcement mechanism corresponds and sets up in the soil-backed side that starts all sides of entrance to a cave shield section of jurisdiction, and a plurality of shield that reinforcement mechanism will start all sides of entrance to a cave construct the section of jurisdiction and link into a whole, the tractive hydro-cylinder is provided with a plurality of roots, and a plurality of root tractive hydro-cylinders use the central axis of the entrance to a cave of starting to lay on the reinforcement mechanism that starts all sides of entrance to a cave as the center is equidistant, and tractive hydro-cylinder level sets up, and its both ends are respectively through tractive support fixed mounting on reinforcement mechanism and back mechanism, back mechanism corresponds and sets up in one side that the entrance to a cave was kept away from to the shield tunnel, and it is close to start one side wall face of entrance to link to each other as the stiff end butt that advances the hydro-cylinder and the propelling cylinder of propelling cylinder, pressure control platform passes through the connecting line and links to each other with tractive hydro-cylinder and propelling cylinder for the pressure of balanced tractive hydro-cylinder and propelling cylinder.
Preferably, the backrest mechanism comprises a steel backrest, a pushing oil cylinder and a supporting shoe, one side of the steel backrest is connected with the pulling oil cylinder through a pulling support fixed by welding, the other side of the steel backrest is connected with the supporting shoe through a plurality of pushing oil cylinders, one side of the supporting shoe, which is far away from the pushing oil cylinder, is set to be an arc surface matched with a shield segment at a corresponding position, and the pushing oil cylinder is connected with the pressure control console through a connecting pipeline for compensating a pressure difference value between the pulling oil cylinder and the pushing oil cylinder.
Preferably, the strengthening mechanism is including burying the reinforcement steel sheet in the shield section of jurisdiction soil-backed side underground, the equidistant welding in one side that the reinforcement steel sheet was buried shield section of jurisdiction concrete has a plurality of anchor reinforcing bars, and anchor reinforcing bar pours in the concrete of shield section of jurisdiction, and the shield section of jurisdiction is located the part of originating the entrance to a cave within range and does not set up the reinforcement steel sheet, and the reinforcement steel sheet that a plurality of shield sections of jurisdiction outside originated the entrance to form a whole through a plurality of longitudinal connecting rods of welded fastening and radial connecting rod, longitudinal connecting rod is on a parallel with the central axis direction setting of shield tunnel, and its body of rod subsides are established on the reinforcement steel sheet and cross all vertical patchings of reinforcement steel sheet, the central axis direction setting of radial connecting rod perpendicular to shield tunnel, its body of rod are the arc and paste and establish on the reinforcement steel sheet, and its body of rod crosses all horizontal patchings of reinforcement steel sheet.
Preferably, the drawing oil cylinder is a double-head hydraulic oil cylinder and comprises a cylinder body in the middle and piston rods at two ends.
Preferably, the traction support includes drawknot sleeve, traction rod and drawknot support, drawknot sleeve opening one end is fixed to be set up on strengthening mechanism or back mechanism, and equidistant being fixed with a plurality of drawknot floor between its barrel week side and strengthening mechanism or back mechanism, and the through-hole has been seted up at its bobbin base middle part, and wears to be equipped with the traction rod in the through-hole, the one end welded fastening that the traction rod extends to the drawknot sleeve inboard has the drawrod head of pie, and the size of drawrod head is greater than the size of drawknot sleeve bobbin base through-hole, and the one end welded fastening that the drawrod kept away from the drawknot sleeve has the drawknot support, the drawknot support is the U type, and its U type inslot interpolation is equipped with the piston rod head of traction cylinder, and its U type groove wall is located the top bottom both ends of piston rod head, and its U type groove wall is connected with the piston rod head through the round pin axle.
Preferably, four drawing oil cylinders are arranged, four drawing supports corresponding to one ends of the four drawing oil cylinders close to the starting hole are respectively arranged on four corner points of a rectangle outside the starting hole, and the center point of the rectangle is located on the central axis of the starting hole.
Preferably, four traction supports close to one side of the starting hole are vertically arranged into a group, a support upright post is erected between each group of traction supports, the support upright posts are vertically arranged, and the end parts of rod bodies of the support upright posts are connected with a connecting seat welded and fixed on the drawknot sleeve through pin shafts.
Preferably, two traction oil cylinders arranged above are provided with supporting inclined rods, one ends of the supporting inclined rods are connected with hinged seats on the cylinder body through hinge pins, and the other ends of the supporting inclined rods are connected with hinged seats on the supporting upright posts or the backrest mechanism through hinge pins.
Preferably, nine jacking oil cylinders are arranged on the steel backrest in a rectangular array, and the central axis of the jacking oil cylinder positioned in the center of the rectangular array is superposed with the central axis of the starting hole.
In addition, the invention also provides a use method of the connecting channel pipe-jacking construction backrest system, which comprises the following steps:
firstly, paving a track in a shield tunnel, installing a pipe jacking machine in place through a trolley, reinforcing shield segments on the periphery of a starting tunnel opening into a whole through a reinforcing mechanism, and installing a traction oil cylinder, a backrest mechanism, an oil cylinder bracket and a propulsion oil cylinder;
step two, placing a first pipe joint at the front end of a propulsion oil cylinder in a contraction state, starting a traction oil cylinder while starting the propulsion oil cylinder to jack the pipe joint, adjusting the pressure of the traction oil cylinder through a pressure control console to keep the pressure balance of the traction oil cylinder and the propulsion oil cylinder, contracting the propulsion oil cylinder and placing a second pipe joint after the propulsion stroke of the propulsion oil cylinder reaches the length of one pipe joint, jacking the second pipe joint and balancing the pressure of the traction oil cylinder and the propulsion oil cylinder, and repeating the operations of pushing the pipe joint, contracting the propulsion oil cylinder and placing the next pipe joint until the front end of a pipe jacking machine advances to the position of the soil back surface of the shield segment at the starting hole opening;
and step three, cutting the shield segment concrete by the push bench and enabling the shield segment concrete to enter the soil body, continuously and repeatedly pushing the pipe segment, contracting the pushing oil cylinder and placing the next pipe segment, when the pressure of the drawing oil cylinder is not enough to balance the pressure of the pushing oil cylinder, starting the pushing oil cylinder by the pressure control console to push the supporting shoe to the shield segment on one side opposite to the tunneling direction and attaching the supporting shoe to the shield segment, and adjusting the pressure of the pushing oil cylinder to enable the sum of the pressures of the drawing oil cylinder and the pushing oil cylinder to be kept balanced with the pressure of the pushing oil cylinder until the push pipe construction of the communication channel is completed.
Compared with the prior art, the invention has the beneficial effects that: the structure of the invention is novel and reasonable in design, the backrest system mainly based on traction replaces the backrest system which only depends on a pushing mode to apply thrust to the rear part of the backrest in the traditional mode, and a compensation mechanism assisting in pushing is further arranged, so that the organic combination of traction and pushing is realized, the tunnel segments are stressed dispersedly, the problems of stress and deformation of the shield tunnel structure and overlarge segment joint dislocation are solved, and the safety and the waterproofness of the shield tunnel structure are effectively ensured.
Drawings
The above and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative, not limiting of the invention, and in which:
FIG. 1 is a schematic structural view of a connecting channel pipe jacking construction backrest system in a shield tunnel along the cross section of the shield tunnel;
FIG. 2 is a schematic structural diagram of a connecting channel pipe jacking construction backrest system related to the invention;
FIG. 3 is a schematic structural view of a reinforcement mechanism of a connecting channel pipe jacking construction backrest system in a shield tunnel along a longitudinal section of the shield tunnel;
FIG. 4 is a schematic structural view of a reinforcement steel plate and an anchoring steel bar of the push pipe construction backrest system for the connecting channel according to the present invention;
FIG. 5 is a structural schematic diagram of a first step of a usage method of the connecting channel pipe jacking construction backrest system related by the invention;
FIG. 6 is a structural schematic diagram of a second step of the usage method of the connecting channel pipe jacking construction backrest system related by the invention;
FIG. 7 is a structural schematic diagram of a third step of the use method of the connecting channel pipe jacking construction backrest system related by the invention.
Reference numerals: 1-shield tunnel, 2-shield segment, 3-initial opening, 4-reinforcing mechanism, 401-reinforcing steel plate, 402-anchoring steel bar, 403-longitudinal connecting rod, 404-radial connecting rod, 5-pulling support, 501-pulling sleeve, 502-pulling rib plate, 503-pulling rod head, 504-pulling rod, 505-pulling support, 506-connecting seat, 507-supporting upright post, 6-pin shaft, 7-pulling oil cylinder, 701-cylinder body, 702-piston rod, 8-supporting pipe-jacking inclined rod, 9-hinging seat, 10-backrest mechanism, 1001-steel backrest, 1002-pushing oil cylinder, 1003-supporting shoe, 11-oil cylinder support, 12-pushing oil cylinder, 13-connecting pipeline, 14-pressure control platform, 15-pressure control platform, 16-track, 17-trolley and 18-pipe joint.
Detailed Description
Hereinafter, embodiments of a connecting tunnel pipe jacking construction backrest system and a method of using the same according to the present invention will be described with reference to the accompanying drawings. The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
In the description of the present invention, it should be noted that the terms "top", "bottom", "upper", "lower", "inner", "outer", "transverse", "longitudinal", "vertical", "upright", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the invention. Like reference numerals are used to denote like parts.
The principles and features of the present invention will be described with reference to the following drawings, which are illustrative only and are not intended to limit the scope of the invention. Preferred embodiments of the present invention are described in further detail below with reference to FIGS. 1-7:
as shown in fig. 1-2, the preferable backrest system for push pipe construction of the connecting channel of the invention comprises a reinforcing mechanism 4, a pulling oil cylinder 7, a backrest mechanism 10 and a pressure control console 14, as shown in fig. 3-4, the reinforcing mechanism 4 is correspondingly arranged on the back soil side of a shield segment 2 on the peripheral side of a starting opening 3, the reinforcing mechanism 4 connects a plurality of shield segments 2 on the peripheral side of the starting opening 3 into a whole, the reinforcing mechanism 4 comprises a reinforcing steel plate 401 with the thickness of 3cm embedded in the back soil side of the shield segment 2, a plurality of anchoring steel bars 402 with the diameter of 22mm are welded at equal intervals on one side of the reinforcing steel plate 401 embedded in the concrete of the shield segment 2, and the anchoring steel bars 402 are poured in the concrete of the shield segment 2 to prevent the shield segment 2 from being pulled after the reinforcing steel plate 401, the part of the shield segment 2, which is positioned in the range of the starting tunnel portal 3, is not provided with a reinforcing steel plate 401, the reinforcing steel plates 401 of a plurality of shield segments 2 outside the starting tunnel portal 3 are assembled by through seams and form a whole by a plurality of longitudinal connecting rods 403 and radial connecting rods 404 which are fixedly welded, the longitudinal connecting rods 403 are arranged in parallel to the direction of the central axis of the shield tunnel 1, rod bodies of the longitudinal connecting rods 403 are attached to the reinforcing steel plates 401 and cross all vertical abutted seams of the reinforcing steel plates 401, the radial connecting rods 404 are arranged in a direction vertical to the central axis of the shield tunnel 1, the rod bodies are arc-shaped and attached to the reinforcing steel plates 401, and the rod bodies cross all horizontal abutted seams of the reinforcing steel plates 401;
four drawing oil cylinders 7 are arranged, the drawing oil cylinders 7 adopt double-head hydraulic oil cylinders, the four drawing oil cylinders 7 are arranged on the reinforcing mechanism 4 on the peripheral side of the starting opening 3 at equal intervals by taking the central axis of the starting opening 3 as the center, the drawing oil cylinders 7 are horizontally arranged, two ends of the drawing oil cylinders 7 are fixedly arranged on the reinforcing mechanism 4 and the backrest mechanism 10 through drawing supports 5 respectively, the four drawing supports 5 corresponding to one ends of the four drawing oil cylinders 7 close to the starting opening 3 are arranged on four corner points of a rectangle on the outer side of the starting opening 3 respectively, and the central point of the rectangle is positioned on the central axis of the starting opening 3;
the backrest mechanism 10 is correspondingly arranged on one side of the shield tunnel 1 far away from the starting tunnel portal 3, the wall surface of one side of the backrest mechanism, close to the starting tunnel portal 3, is used as a back-support surface of the propulsion oil cylinder 12 and is connected with the fixed end of the propulsion oil cylinder 12 in an abutting mode, the backrest mechanism 10 comprises a steel backrest 1001, a jacking oil cylinder 1002 and a supporting shoe 1003, the steel backrest 1001 is of a box-shaped structure and is made of 3cm steel plates, 250 types of I-shaped steel are placed in the box-shaped structure at equal intervals to serve as reinforcing rib plates, one side of the steel backrest 1001 is connected with the traction oil cylinder 7 through a fixedly welded traction support 5, the other side of the steel backrest is connected with the supporting shoe 1003 through nine jacking oil cylinders 1002, one side of the supporting shoe, far away from the jacking oil cylinder 1002, is arranged to be an arc surface matched with the shield segment 2 at the corresponding position, the nine jacking oil cylinders 1002 are arranged on the steel backrest 1001 according to a rectangular array, the central axis of the jacking oil cylinder 1002 is coincident with the central axis of the starting tunnel portal 3, and the jacking oil cylinder 1002 is connected with a pressure control console 14 through a connecting pipeline 13 to compensate the pressure difference between the jacking oil cylinder 7 and the propulsion oil cylinder 12;
the traction support 5 comprises a traction sleeve 501, a traction rod 504, a traction support 505 and a support upright 507, wherein one end of an opening of the traction sleeve 501 is fixedly arranged on a reinforced steel plate 401 or a steel backrest 1001, six traction rib plates 502 are fixed between the circumferential side of a cylinder body and the reinforced steel plate 401 or the steel backrest 1001 at equal intervals, a through hole is formed in the middle of the cylinder bottom, the traction rod 504 penetrates through the through hole, a pie-shaped traction rod head 503 is fixedly welded at one end of the traction rod 504 extending to the inner side of the traction sleeve 501, the size of the traction rod head 503 is larger than that of the through hole at the cylinder bottom of the traction sleeve 501, the traction support 505 is fixedly welded at one end of the traction rod 504 far away from the traction sleeve 501, the traction support 505 is U-shaped, a piston rod 702 rod head of a drawing oil cylinder 7 is inserted in a U-shaped groove of the drawing oil cylinder, the walls of the U-shaped groove are positioned at the two ends of the top bottom of the piston rod 702 rod head, the walls of the U-shaped groove are connected with the piston rod 702 rod head through a pin shaft 6, four drawing supports 5 close to one side of an initial opening 3 are arranged in a group from top to bottom, a support upright 507 is erected between each group of drawing supports 5, the support upright 507 is vertically arranged, the end part of a rod body of the support upright is connected with a connecting seat 506 on a drawing sleeve 501 through a pin shaft 6, in order to improve the stability of the drawing oil cylinder 7, two drawing oil cylinders 7 arranged above the support upright are provided with support inclined rods 8, one end of each support inclined rod 8 is connected with a hinge seat 9 on a cylinder body 701 through a pin shaft 6, and the other end of each support inclined rod is connected with the hinge seat 9 on the support upright 507 or a steel backrest 1001 through a pin shaft 6;
the pressure control table 14 is internally provided with a PLC control computer and is provided with a display screen, the PLC control computer is respectively connected with each drawing oil cylinder 7, each pushing oil cylinder 1002 and each pushing oil cylinder 12 through a connecting pipeline 13, the display screen respectively displays the oil pressure, the oil temperature and the pulling force or the pushing force of each oil cylinder, the PLC control computer can balance the pressure of each pushing oil cylinder 12 and the pressure of each drawing oil cylinder 7, and if the pressure of each drawing oil cylinder 7 is not enough to balance the pressure of each pushing oil cylinder 12, the PLC control computer analyzes the pressure and increases the pressure of each pushing oil cylinder 1002 for compensation.
As shown in FIGS. 5-7, the invention also provides a use method of the connecting channel pipe jacking construction backrest system, which comprises the following steps: firstly, a track 16 is laid in a shield tunnel 1, a pipe jacking machine 15 is installed in place through a trolley 17 (the trolley 17 is provided with a hydraulic system, a muck improvement system, a compressed air system, a transformer, a cooling water system, a hoisting system, a grease injection system, a grouting system, an operation chamber, a bentonite system and a pressure control table 14 required by pipe jacking construction), shield segments 2 on the periphery of a starting tunnel portal 3 are reinforced into a whole through a reinforcing mechanism 4, and a traction oil cylinder 7, a backrest mechanism 10, an oil cylinder support 11 and a propulsion oil cylinder 12 are installed;
step two, placing a first pipe joint 18 at the front end of a propulsion oil cylinder 12 in a contraction state, starting a traction oil cylinder 7 while the propulsion oil cylinder 12 jacks the pipe joint 18, adjusting the pressure of the traction oil cylinder 7 through a pressure control console 14 to keep the pressure balance of the traction oil cylinder 7 and the propulsion oil cylinder 12, contracting the propulsion oil cylinder 12 and placing a second pipe joint 18 after the propulsion stroke of the propulsion oil cylinder 12 reaches the length of one pipe joint 18, jacking the second pipe joint 18 and balancing the pressure of the traction oil cylinder 7 and the propulsion oil cylinder 12, and repeating the operations of pushing the pipe joint 18, contracting the propulsion oil cylinder 12 and placing the next pipe joint 18 until the front end of a pipe jacking machine 15 advances to the position of the soil back surface of a shield segment 2 at the position of an originating tunnel portal 3;
thirdly, the pipe jacking machine 15 cuts the concrete of the shield segment 2 and enters the soil body (in order to prevent the normal operation of the pipe jacking machine 15 from being influenced by the internal reinforcing bars of the shield segment 2, the reinforcing bars in the shield segment 2 at the starting opening 3 are replaced by glass fiber reinforcing bars), the operations of pushing the pipe joints 18, contracting the pushing oil cylinder 12 and placing the next pipe joint 18 are continuously repeated, when the pressure of the pulling oil cylinder 7 is not enough to balance the pressure of the pushing oil cylinder 12, the pushing oil cylinder 1002 is started through the pressure control console 14 to push the supporting shoe 1003 into the shield segment 2 on one side in the opposite direction of the tunneling direction and be attached to the pipe jacking cylinder 2, and the pressure of the pushing oil cylinder 1002 is adjusted to keep the sum of the pressures of the pulling oil cylinder 7 and the pushing oil cylinder 1002 balanced with the pressure of the pushing oil cylinder 12 until the construction of the communication channel is completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a junctional passage push pipe construction back system which characterized in that: including strengthening mechanism (4), tractive hydro-cylinder (7), back mechanism (10) and pressure control platform (14), strengthening mechanism (4) correspond set up in originating entrance to a cave (3) week side shield structure section of jurisdiction (2) the back soil side, and strengthening mechanism (4) will originate a plurality of shield structures section of jurisdiction (2) of entrance to a cave (3) week side and link into a whole, tractive hydro-cylinder (7) are provided with a plurality of, and a plurality of tractive hydro-cylinders (7) use the central axis of originating entrance to a cave (3) as the equidistant cloth of center on originating entrance to a cave (3) week side strengthening mechanism (4), tractive hydro-cylinder (7) level sets up, the two ends of the pressure control platform are fixedly mounted on a reinforcing mechanism (4) and a backrest mechanism (10) through a traction support (5) respectively, the backrest mechanism (10) is correspondingly arranged on one side, away from a starting tunnel opening (3), of a shield tunnel (1), one side wall face, close to the starting tunnel opening (3), of the backrest mechanism is connected with a fixed end of a propulsion oil cylinder (12) in an abutting mode as a back-supporting face of the propulsion oil cylinder (12), and a pressure control platform (14) is connected with the traction oil cylinder (7) and the propulsion oil cylinder (12) through a connecting pipeline (13) and used for balancing the pressure of the traction oil cylinder (7) and the propulsion oil cylinder (12).
2. The interconnected channel pipe-jacking construction backrest system as claimed in claim 1, wherein: backrest mechanism (10) are including steel back (1001), top push cylinder (1002) and prop boots (1003), steel back (1001) one side links to each other with traction cylinder (7) through welded fastening's tractive support (5), and the opposite side pushes away hydro-cylinder (1002) through a plurality of roots and props boots (1003) and link to each other, and props one side that boots (1003) kept away from top push cylinder (1002) and set up to shield structure section of jurisdiction (2) assorted cambered surface with corresponding position, top push cylinder (1002) are connected with pressure control platform (14) through connecting line (13) for compensate the pressure difference between traction cylinder (7) and propulsion cylinder (12).
3. The interconnected channel pipe-jacking construction backrest system as claimed in claim 1, wherein: reinforcing mechanism (4) including bury reinforcing steel sheet (401) of shield segment (2) soil backing side underground, one side equidistant welding in shield segment (2) concrete is buried in reinforcing steel sheet (401) has a plurality of anchor reinforcing bars (402), and anchor reinforcing bar (402) are pour in the concrete of shield segment (2), the part that shield segment (2) are located originating entrance to a cave (3) within range does not set up reinforcing steel sheet (401), the reinforcing steel sheet (401) of a plurality of shield segments (2) in originating entrance to a cave (3) outside adopt to lead to the seam and assemble to form a whole through a plurality of longitudinal connecting rod (403) and radial connecting rod (404) of welded fastening, longitudinal connecting rod (403) are on a parallel with the central axis direction setting of shield tunnel (1), and its body of rod subsides are established on reinforcing steel sheet (401) and are consolidated all vertical patchings of steel sheet (401), radial connecting rod (404) are perpendicular to the central axis setting of shield tunnel (1), and its body of rod is the arc and pastes and establishes on reinforcing steel sheet (401), and all horizontal patchings of the reinforcing steel sheet (401) of the body of rod (401) of the body of the reinforcing steel sheet (401) of the reinforcing steel sheet.
4. The interconnected channel pipe jacking construction backrest system of claim 1, wherein: the drawing oil cylinder (7) is a double-head hydraulic oil cylinder and comprises a cylinder body (701) in the middle and piston rods (702) at two ends.
5. The interconnected channel pipe jacking construction backrest system of claim 4, wherein: the drawing support (5) comprises a drawing sleeve (501), a drawing rod (504) and a drawing support (505), one end of an opening of the drawing sleeve (501) is fixedly arranged on a reinforcing mechanism (4) or a backrest mechanism (10), a plurality of drawing rib plates (502) are fixed between the periphery of a barrel body and the reinforcing mechanism (4) or the backrest mechanism (10) at equal intervals, a through hole is formed in the middle of the barrel bottom of the drawing sleeve (501), the drawing rod (504) penetrates through the through hole, a pie-shaped drawing rod head (503) is fixed to one end, extending to the inner side of the drawing sleeve (501), of the drawing rod (504) in a welded mode, the size of the drawing rod head (503) is larger than that of the barrel bottom through hole of the drawing sleeve (501), the drawing support (505) is fixed to one end, far away from the drawing sleeve (501), of the drawing rod (504), of the drawing support (505) is of a U-shaped, a piston rod (702) of a drawing oil cylinder (7) is inserted into the U-shaped groove, the wall of the U-shaped groove is located at the top of the piston rod (702), and the two ends of the U-shaped groove are connected with the piston rod head (702) through a pin shaft (6).
6. The interconnected channel pipe-jacking construction backrest system as claimed in claim 5, wherein: four drawing oil cylinders (7) are arranged, four drawing supports (5) corresponding to one ends of the four drawing oil cylinders (7) close to the starting hole (3) are respectively arranged on four corner points of a rectangle on the outer side of the starting hole (3), and the center point of the rectangle is located on the central axis of the starting hole (3).
7. The interconnected channel pipe jacking construction backrest system of claim 6, wherein: four traction supports (5) close to one side of the starting hole (3) are vertically arranged into a group, a support upright post (507) is erected between each group of traction supports (5), the support upright post (507) is vertically arranged, and the end part of a rod body of the support upright post is connected with a connecting seat (506) on the drawknot sleeve (501) through a pin shaft (6).
8. The interconnected channel pipe-jacking construction backrest system as claimed in claim 6, wherein: two traction oil cylinders (7) arranged above are provided with supporting inclined rods (8), one ends of the supporting inclined rods (8) are connected with hinged seats (9) on the cylinder body (701) through pin shafts (6), and the other ends of the supporting inclined rods (8) are connected with hinged seats (9) on supporting upright columns (507) or backrest mechanisms (10) through pin shafts (6).
9. The interconnected channel pipe jacking construction backrest system of claim 2, wherein: nine jacking oil cylinders (1002) are arranged, the nine jacking oil cylinders (1002) are arranged on the steel backrest (1001) according to a rectangular array, and the central axis of the jacking oil cylinder (1002) positioned at the central position of the rectangular array is superposed with the central axis of the starting hole (3).
10. A use method of the connecting channel pipe-jacking construction backrest system is used in the construction process of the connecting channel pipe-jacking construction backrest system according to claim 2, and is characterized by comprising the following steps:
firstly, paving a track (16) in a shield tunnel (1), installing a pipe jacking machine (15) in place through a trolley (17), reinforcing shield pipe pieces (2) on the peripheral side of a starting tunnel opening (3) into a whole through a reinforcing mechanism (4), and installing a traction oil cylinder (7), a backrest mechanism (10), an oil cylinder support (11) and a propulsion oil cylinder (12);
step two, placing a first pipe joint (18) at the front end of a propulsion oil cylinder (12) in a contraction state, starting a traction oil cylinder (7) while starting the propulsion oil cylinder (12) to jack in the pipe joint (18), adjusting the pressure of the traction oil cylinder (7) through a pressure control table (14) to keep the pressure balance of the traction oil cylinder (7) and the propulsion oil cylinder (12), contracting the propulsion oil cylinder (12) and placing a second pipe joint (18) after the propulsion stroke of the propulsion oil cylinder (12) reaches the length of one pipe joint (18), jacking in the second pipe joint (18) and balancing the pressure of the traction oil cylinder (7) and the propulsion oil cylinder (12), and repeating the operations of pushing the pipe joint (18), contracting the propulsion oil cylinder (12) and placing the next pipe joint (18) until the front end of a propulsion machine (15) advances to the back surface position of a shield segment (2) at the position of an initial tunnel entrance (3);
and step three, cutting the concrete of the shield segment (2) by the push bench (15) and putting the concrete into the soil body, continuously repeating the operations of pushing the pipe joint (18), retracting the pushing cylinder (12) and placing the next pipe joint (18), when the pressure of the pulling cylinder (7) is not enough to balance the pressure of the pushing cylinder (12), starting the pushing cylinder (1002) through the pressure control console (14) to push the supporting shoe (1003) and attach the supporting shoe to the shield segment (2) on one side in the opposite direction of the tunneling direction, and adjusting the pressure of the pushing cylinder (1002) to keep the sum of the pressures of the pulling cylinder (7) and the pushing cylinder (1002) and the pressure of the pushing cylinder (12) balanced until the push pipe construction of the communication channel is completed.
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3574905A (en) * | 1967-01-16 | 1971-04-13 | Kao Jing Hong | Device for successively building concrete structures |
| CN102644467A (en) * | 2012-04-27 | 2012-08-22 | 上海隧道工程股份有限公司 | Tunnel connecting passage construction method for directly cutting segment rings through pipe jacking machine |
| CN106948833A (en) * | 2017-04-05 | 2017-07-14 | 宁波大学 | Pin-connected panel service channel structure and its construction method |
| CN107664038A (en) * | 2017-10-18 | 2018-02-06 | 安徽路鼎科技股份有限公司 | Bore top machine and thirdly step push bench process |
| CN109026025A (en) * | 2018-08-30 | 2018-12-18 | 上海隧道工程有限公司 | Push pipe support and jacking system for construction tunnel service channel |
| CN208518670U (en) * | 2018-06-26 | 2019-02-19 | 扬州斯普森机械制造有限公司 | A kind of push-bench reverse ejection device |
| CN210422637U (en) * | 2019-07-07 | 2020-04-28 | 中国水利水电第七工程局有限公司 | A concreting system for full section concrete of circular tunnel |
| CN112177627A (en) * | 2020-10-10 | 2021-01-05 | 天津大学 | Rapid construction method for jacking pipe with synchronous jacking and splicing |
| CN213540398U (en) * | 2020-11-12 | 2021-06-25 | 中铁隧道集团一处有限公司 | Super large section class rectangle push pipe originating platform |
| CN113187491A (en) * | 2021-05-17 | 2021-07-30 | 中铁十二局集团第四工程有限公司 | Subway tunnel transverse passage small shield construction process |
| CN214499067U (en) * | 2021-03-26 | 2021-10-26 | 曲春林 | Pipe jacking machine |
| CN113622929A (en) * | 2021-08-25 | 2021-11-09 | 中国铁建重工集团股份有限公司 | Segment breaking device, and connection channel construction system and method |
| CN215057396U (en) * | 2021-04-26 | 2021-12-07 | 刘志兵 | Stepping hard rock pushing device |
| CN215520877U (en) * | 2020-12-28 | 2022-01-14 | 厦门厦工中铁重型机械有限公司 | Diameter-variable rectangular pipe jacking machine shield |
| CN114320313A (en) * | 2022-01-08 | 2022-04-12 | 深圳市华杰建设集团有限公司 | Air-pushing dragging type pipe jacking machine escaping construction method |
| CN114439487A (en) * | 2022-03-09 | 2022-05-06 | 中铁五局集团第五工程有限责任公司 | Existing shield tunnel connection channel opening construction method |
-
2022
- 2022-07-26 CN CN202210881180.3A patent/CN115110973B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3574905A (en) * | 1967-01-16 | 1971-04-13 | Kao Jing Hong | Device for successively building concrete structures |
| CN102644467A (en) * | 2012-04-27 | 2012-08-22 | 上海隧道工程股份有限公司 | Tunnel connecting passage construction method for directly cutting segment rings through pipe jacking machine |
| CN106948833A (en) * | 2017-04-05 | 2017-07-14 | 宁波大学 | Pin-connected panel service channel structure and its construction method |
| CN107664038A (en) * | 2017-10-18 | 2018-02-06 | 安徽路鼎科技股份有限公司 | Bore top machine and thirdly step push bench process |
| CN208518670U (en) * | 2018-06-26 | 2019-02-19 | 扬州斯普森机械制造有限公司 | A kind of push-bench reverse ejection device |
| CN109026025A (en) * | 2018-08-30 | 2018-12-18 | 上海隧道工程有限公司 | Push pipe support and jacking system for construction tunnel service channel |
| CN210422637U (en) * | 2019-07-07 | 2020-04-28 | 中国水利水电第七工程局有限公司 | A concreting system for full section concrete of circular tunnel |
| CN112177627A (en) * | 2020-10-10 | 2021-01-05 | 天津大学 | Rapid construction method for jacking pipe with synchronous jacking and splicing |
| CN213540398U (en) * | 2020-11-12 | 2021-06-25 | 中铁隧道集团一处有限公司 | Super large section class rectangle push pipe originating platform |
| CN215520877U (en) * | 2020-12-28 | 2022-01-14 | 厦门厦工中铁重型机械有限公司 | Diameter-variable rectangular pipe jacking machine shield |
| CN214499067U (en) * | 2021-03-26 | 2021-10-26 | 曲春林 | Pipe jacking machine |
| CN215057396U (en) * | 2021-04-26 | 2021-12-07 | 刘志兵 | Stepping hard rock pushing device |
| CN113187491A (en) * | 2021-05-17 | 2021-07-30 | 中铁十二局集团第四工程有限公司 | Subway tunnel transverse passage small shield construction process |
| CN113622929A (en) * | 2021-08-25 | 2021-11-09 | 中国铁建重工集团股份有限公司 | Segment breaking device, and connection channel construction system and method |
| CN114320313A (en) * | 2022-01-08 | 2022-04-12 | 深圳市华杰建设集团有限公司 | Air-pushing dragging type pipe jacking machine escaping construction method |
| CN114439487A (en) * | 2022-03-09 | 2022-05-06 | 中铁五局集团第五工程有限责任公司 | Existing shield tunnel connection channel opening construction method |
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