WO2021056959A1

WO2021056959A1 - Communication tunnel boring machine

Info

Publication number: WO2021056959A1
Application number: PCT/CN2020/076625
Authority: WO
Inventors: 贾连辉; 叶蕾; 肖威; 范磊; 孙磊; 闫扬义; 周倩; 杨聚辉; 王小涛; 刘娇; 冯猛; 袁征; 徐德帆; 付玉龙; 吴彦星; 徐光亿; 肖晶娜
Original assignee: 中铁工程装备集团有限公司
Priority date: 2019-08-21
Filing date: 2020-02-25
Publication date: 2021-04-01
Also published as: AU2020351946B2; CN110593884B; AU2020351946A1; CN110593884A

Abstract

A communication tunnel boring machine comprises a pipe section crane trolley (3). A pipe section conveying device (1) is provided on one side of the pipe section crane trolley. A rear supporting system is provided on the other side of the pipe section crane trolley. The pipe section crane trolley is supported on and spans a counterforce support system. A pipe section pushing system is provided on the counterforce support system. The pipe section pushing system pushes a pipe section (2), and the pipe section acts on a main boring machine (4). An extensible conveying device (13) is provided between the pipe section pushing system and the main boring machine. The boring machine distributes force on a counterforce frame of the counterforce support system to a main tunnel pipe piece by means of a bridge plate, such that sufficient counterforce support is provided during tunnel boring. Muck is discharged continuously, thereby avoiding the case in which boring needs to be stopped when the muck is being discharged from a muck container, and achieving automated mechanical boring.

Description

Connecting channel boring machine

Technical field

The present invention relates to tunnel construction equipment, in particular to a connecting channel boring machine.

Background technique

In the field of tunnel construction technology, multiple communication channels are generally designed and constructed between two adjacent tunnels to play a role in connecting tunnels, drainage, fire protection, and emergency escape. The connecting passages between tunnels are often constructed by freezing method + mining method at home and abroad. With the development of technology, mechanized construction has begun to "emerge" in the connecting passage project. Compared with freezing method + mining method, mechanized construction is economical. , High safety, short construction period, etc.

At present, most of the mechanized construction link channels are circular cross-sections, and the earth pressure balance or mud-water balance type roadheaders are mostly used for construction, and the open type roadheader is rarely used. The construction requirements for the connecting passage between two subway tunnels are very common in China, and many scientific and technological achievements have been studied successively. For example, the invention patent named "Shield Machine for Connecting Passage of Tunnel" (application number 201621199004.8), the invention patent named "Rectangular Pipe Jacking Machine for Construction of Connecting Passage" (application number 201610975537.9), and the name of "Shield Machine Used for Connecting Passage of Tunnel" The invention patent (application number 201610975537.9) of the "Shield Machine and the Method of Tunneling of the Connecting Channel", the invention patent named "A reaction force support system for the launch of a shield machine" (application number 201821022037.4), and the name of the "Assembled Contact Channel" Structure and its construction method” invention patent (application number 201710216575.0), invention patent application titled “Pipe jacking launcher angle adjustment device for construction of tunnel connecting passages” (application number 201811002748.X), titled “Application The invention patent application (application number 201811005028.9) for the pipe jacking support and jacking system of the connecting passage of the construction tunnel, and the invention patent application (application for the built-in airbag sealing device and sealing method of the pipe jacking method of the tunnel connecting passage) No. 201811000536.8) and so on.

In order to meet different tunnel design requirements, the connecting channel is sometimes designed as a rectangular section, which has a higher space utilization rate than a circular section. However, when the above-mentioned technology is used for rectangular section tunneling, the tunneling machine itself must be started, tunneled, transported and installed. Construction steps such as pipe joint loading and unloading have caused considerable difficulties in actual construction.

Summary of the invention

The present invention proposes a connected tunnel boring machine, which can effectively control ground settlement, has low safety risk, high construction efficiency, and low overall cost, thereby solving the technical difficulty of the existing connecting tunnel boring machine in applying rectangular cross-sections.

The technical scheme of the present invention is realized as follows: a connecting tunnel boring machine includes a pipe section hoisting trolley, one side of the pipe section hoisting trolley is provided with a pipe section transport device, and the pipe section hoisting trolley The other side of the pipe is equipped with a rear supporting system. The pipe joint lifting trolley straddles the reaction support system. The reaction support system is equipped with a pipe joint propulsion system. The pipe joint propulsion system pushes the pipe joint, and the pipe joint acts on the tunneling main engine. Above, there is a telescopic conveying device between the pipe section propulsion system and the tunneling host.

The pipe section transport device is a pipe section transport vehicle.

The pipe section transportation device is located at the front end of the main tunnel driving direction, and the rear supporting system is located at the rear end of the main tunnel driving direction.

The front end of the pipe section is provided with a convex part, the top ring of the pipe section propulsion system is provided with a convex part, and the rear end of the pipe section is provided with a groove matching the convex part.

The pipe section hoisting trolley includes a walking beam on which a crane is provided, the walking beam is connected with a supporting mechanism, the supporting mechanism is provided with telescopic legs, and the supporting mechanism is provided with rolling walking wheels.

The supporting mechanism is connected with the outrigger through a telescopic oil cylinder.

The said tunneling host is an open tunneling host.

The tunneling host has a rectangular section.

The tunneling host includes a shield body, and the excavation device at the front end and the muck conveying device at the back end are arranged in the shield body, and the rear end of the muck conveying device is a telescopic conveying device.

The front end of the shield body is provided with cutters located on the upper part and on both sides.

The upper part of the shield body is provided with an inserting board device at the front end.

The shield body is provided with a retaining plate device located on the upper part.

The shield body includes a front shield, a middle shield and a tail shield. The front shield is fixedly connected with the middle shield, and the middle shield is connected with the tail shield through a hinged oil cylinder.

Both the front shield and the middle shield comprise two upper and lower parts, and the upper part is connected with the lower part.

The muck conveying device is a scraper conveyor or a belt conveyor.

The rear end of the shield body is provided with a hole-out oil cylinder.

The rear supporting system includes a rear supporting trailer, and the rear supporting trailer is provided with a main control room, a hydraulic system and a fluid system.

The reaction force support system includes a support platform on which a reaction force frame and a pipe joint propulsion system are arranged, and the reaction force frame is connected with the pipe joint propulsion system.

A bridge plate is arranged between the reaction force frame and the main tunnel segment.

The pipe section propulsion system includes a propulsion cylinder assembly, one end of the propulsion cylinder assembly is connected with the reaction force support system, and the other end of the propulsion cylinder assembly is connected with the top ring.

The telescopic conveying device is a telescopic belt conveyor.

The advantages of the present invention:

1. Adopt all-mechanical method to construct the connecting passage of the tunnel, and the reaction force support provided on the support platform at the bottom of the starting end is used to provide thrust reaction force support, and the force exerted on the reaction force frame is distributed to the main tunnel segments through the bridge slab , So that the tunnel excavation has sufficient reaction support.

2. The bottom of the pipe section hoisting trolley on the bottom support platform at the originating end adopts a wheeled walking structure, which greatly facilitates rapid transfer operations and realizes pipe section hoisting in a limited space.

3. In the process of tunneling, a single tunneling process is the width of a pipe section. After completing a stroke, the jacking cylinder is retracted, and the pipe section hoisting trolley lifts the pipe section to complete the assembly of a ring pipe section.

4. The slag discharging method creatively adopts the continuous slag discharging method, which avoids the shortcomings of stopping the excavation when the slag bucket is used to discharge the slag, reduces the slag discharging time, and further shortens the construction period.

5. It can realize automatic mechanical excavation. Tunnel excavation is carried out under the protection of shield shell. Prefabricated pipe joints are used for synchronous lining of the tunnel. The connecting channel construction is formed at one time, which greatly improves the construction efficiency and safety.

6. The adopted pipe joint hoisting trolley and rear supporting equipment all adopt wheeled structure, and the bottom support platform at the starting end is easy to disassemble and assemble, which can realize the rapid transition and circular construction of multiple communication channels.

7. At the same time, the open tunnel boring machine is used for construction. Compared with the earth pressure balance type or mud water balance type boring machine, the overall construction cost is lower, and it has a higher promotion and application value.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a schematic diagram of the construction of the present invention.

Figure 3 is a schematic diagram of the structure of the pipe section hoisting trolley of the present invention.

Fig. 4 is a schematic diagram of the structure of the main engine of the present invention.

In the picture: 1-pipe section transportation device, 2-pipe section, 3-pipe section hoisting trolley, 4-header machine, 5-main control room, 6-hydraulic system, 7-fluid system, 8-rear supporting trailer , 9-support platform, 10-propulsion cylinder assembly, 11-reaction frame, 12-top ring, 13-retractable conveying device, 14-bridge, 301-crane, 302-walking beam, 303-support mechanism, 304 -Outrigger, 305- walking wheel, 401- retaining plate device, 402- inserting plate device, 403- excavation device, 404- front shield, 405- middle shield, 406- muck conveying device, 407- tail shield, 408-hole cylinder, 409-articulated cylinder.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

As shown in Figures 1 and 2, an open rectangular connected channel roadheader includes a pipe section transport device 1, a pipe section lifting trolley 3, a tunneling host 4, a rear supporting system, a reaction support system, and a pipe section propulsion system And telescopic conveying device. The pipe section hoisting trolley 3 straddles the reaction support system. The pipe section transport device 1 and the rear supporting system are respectively located on both sides of the pipe section hoisting trolley 3. The pipe section transport device adopts a pipe section transport vehicle, and the pipe section transports The trolley and the pipe section lifting trolley 3 work together to transfer the pipe section to the pipe section propulsion system. The pipe joint propulsion system is set on the reaction force support system, and the reaction force support system is used as the reaction force basis to push the pipe joint 2 and the tunneling host 4 forward. The telescopic conveying device is arranged on the pipe section 2, and is located between the tunneling host 4 and the reaction force support system, and conveys the muck to the rear end.

Preferably, the reaction force support system includes a support platform 9, a reaction force frame 11 and a bridge plate 14, and the pipe section propulsion system includes a propulsion cylinder assembly 10 and a top ring 12. The support platform 9 is set on the segment of the main tunnel. The reaction frame 11, the propulsion cylinder assembly 10 and the top ring 12 are all located on the support platform 9 at the bottom of the originating end. The reaction frame 11, the propulsion cylinder assembly 10 and the support platform 9 are all located on the support platform 9 Connected and fixed together, the top ring 12 is connected and fixed with one end of the propulsion cylinder assembly 10, the reaction frame 11 is connected and fixed with the other end of the propulsion cylinder assembly 10, and the propulsion cylinder assembly 10 pushes the tunneling main engine 4 and the tunnel through the top ring 12 The prefabricated pipe section 2 moves forward together to provide a pushing force for the pipe section and the tunneling host to advance forward.

Preferably, the front end of the pipe section 2 is provided with a convex part, the top ring 12 of the pipe section propulsion system is provided with a convex part, and the rear end of the pipe section 2 is provided with a groove matching the convex part, which is convenient for the positioning of the front and rear pipe sections. Alignment between the rings. During construction, when the main engine moves forward and reaches the width of one ring pipe section, the propulsion cylinder assembly is retracted, and the pipe section lifting trolley 3 lifts the pipe section 2 to the installation position, completes the pipe section installation, and then starts the pipe section advancement. Enter the next working cycle until the communication channel is through.

Preferably, the bridge plate 14 is located between the reaction frame 11 and the main tunnel segment, and is a force transmission mechanism between the reaction frame and the main tunnel segment, so that the reaction force on the reaction frame is evenly distributed to the main tunnel segment.

Preferably, the rear supporting system includes the main control room 5, the hydraulic system 6, the fluid system 7 and the rear supporting trailer 8. The main control room 5, the hydraulic system 6 and the fluid system 7 are all arranged on the rear supporting trailer 8, and the main control room 5. It contains an electrical system, and each system jointly provides electricity, gas, water, hydraulic power, anti-friction, and grouting media for the open-type tunneling main engine during construction.

Preferably, as shown in FIG. 3, the pipe section hoisting trolley 3 includes a crane 301, a walking beam 302, a supporting mechanism 303, an outrigger 304 and a walking wheel 305. The crane 301 is installed on the walking beam 302, and is used to lift the pipe section on the pipe section transporter to the pipe section propulsion system. The walking beam 302 is connected with the support mechanism 303, and the support mechanism 303 is provided with telescopic legs 304. , The supporting mechanism 303 is connected to the outrigger 304 through a telescopic oil cylinder, and a rolling walking wheel 305 is provided on the supporting mechanism 303. The outrigger 304 can telescopically move under the action of the oil cylinder. Before the construction of the connection channel, the outrigger 304 is in a fully retracted state, not in contact with the ground, and the walking wheel 305 is in contact with the ground, and supports the entire pipe section hoisting trolley 3, pipe After the section hoisting trolley 3 travels to the construction position of the connecting channel, the outriggers 304 are fully extended and are in contact with the ground. At this time, the traveling wheels 305 are no longer in contact with the ground, and the entire pipe section hoisting trolley 3 is supported by the outriggers 304. , Complete the lifting task of the prefabricated pipe section.

Preferably, as shown in FIG. 4, the excavation host 4 is an open rectangular section excavation host, including a shield, an excavation device 403 and a muck conveying device 406, and the shield includes a front shield 404, a middle shield 405, and a tail shield 407. The front shield 404 is fastened to the middle shield 405, and the middle shield 405 is hingedly connected to the tail shield 407 through a hinged cylinder 409. The front shield 404 and the middle shield 405 are divided into upper and lower halves, and the upper and lower halves are fastened. connection. The upper part of the front shield 404 is provided with a plate inserting device 401 and a retaining plate device 402 to stabilize the excavation surface. Cutters are installed on both sides of the front shield 404 and the retaining plate device 402 to cut the end face of the tunnel. The excavation device 403 is connected and fixed with the middle shield 405, and the excavation device 403 can move up and down and left and right to realize the excavation of the rectangular cross-section connecting channel. The soil excavated by the excavation device 403 is transferred to the telescopic conveying device 13 through the muck conveying device 406. The muck conveying device is a scraper conveyor or a belt conveyor. The telescopic conveying device is a telescopic belt conveyor, a muck conveying device and a telescopic conveyor. The conveying devices work together to transfer the muck out of the entire communication channel. The tail shield 407 is provided with a hole-out cylinder 408. After the connecting passage is through, the hole-out cylinder 408 pushes the tunneling main engine forward to separate it from the first ring pipe section to complete the main engine receiving, and then transfer to the field and start preparing for the next one. Construction of communication channels.

The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.

Claims

A connecting channel boring machine, comprising a pipe section hoisting trolley (3), characterized in that: one side of the pipe section hoisting trolley (3) is provided with a pipe section transport device (1), and the pipe section hoisting The other side of the transport trolley (3) is equipped with a rear supporting system. The pipe section hoisting trolley (3) straddles the reaction force support system, and the reaction support system is equipped with a pipe joint propulsion system, and the pipe joint propulsion system pushes The pipe joint (2) and the pipe joint (2) act on the tunneling main machine (4), and a telescopic conveying device (13) is arranged between the pipe joint propulsion system and the tunneling main machine (4).
The connecting channel boring machine according to claim 1, characterized in that: the pipe section hoisting trolley (3) includes a walking beam (302), and a crane (301) is provided on the walking beam (302) to travel The beam (302) is connected with a supporting mechanism (303), the supporting mechanism (303) is provided with telescopic legs (304), and the supporting mechanism (303) is provided with a rolling walking wheel (305).
The communication tunnel boring machine according to claim 1, characterized in that: the main engine (4) of the excavation is an open type excavator (4).
The connecting tunnel boring machine according to claim 1, characterized in that: the boring host (4) has a rectangular section.
The communication tunnel boring machine according to claim 1, 3 or 4, characterized in that: the boring host (4) comprises a shield body, and an excavation device (403) at the front end and an excavation device (403) at the rear end are arranged in the shield body. The muck conveying device (406), and the rear end of the muck conveying device (406) is a telescopic conveying device (13).
The communication tunnel boring machine according to claim 1, characterized in that: the reaction force support system comprises a support platform (9), and the support platform (9) is provided with a reaction force frame (11) and a pipe joint propulsion system, The reaction frame (11) is connected with the pipe section propulsion system.
The communication tunnel boring machine according to claim 1 or 6, characterized in that: the pipe section propulsion system includes a propulsion cylinder assembly (10), one end of the propulsion cylinder assembly (10) is connected with the reaction support system, and the propulsion cylinder The other end of the assembly (10) is connected with the top ring (12).
The connecting tunnel boring machine according to claim 7, characterized in that: a bridge plate (14) is provided between the reaction frame (11) and the main tunnel segment.
The communication tunnel boring machine according to claim 5, characterized in that: the shield body includes a front shield (404), a middle shield (405) and a tail shield (407), and the front shield (404) and the middle shield (405) ) Is fixedly connected, and the middle shield (405) is connected with the tail shield (407) through a hinged cylinder (409).
The communication tunnel boring machine according to claim 1, wherein the telescopic conveying device (13) is a telescopic belt conveyor.