The construction method of dismantling the shield machine in the cave
A construction method and technology of shield machine, which can be applied to cranes, earth-moving drilling, load hoisting components, etc., can solve the problems of easy fire, difficult dismantling operations, and extremely difficult to restore the completeness of shield machines.
Active Publication Date: 2017-11-10
中铁十一局武汉重型装备有限公司
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Problems solved by technology
Due to the large volume and self-weight of the shield machine, more supporting and hoisting equipment are required, so the conventional dismantling operation of the shield machine at home and abroad is that after the shield operation is completed, the shield machine stops at the wellhead of the station for dismantling After the shield machine exits the hole, the station will start construction work, which will greatly prolong the construction period. For some projects with a tight construction period, the method of dismantling the shield machine at the hole is not applicable
[0003] Especially in the construction of shield tunneling, some special situations are often encountered. For example, after the shield tunneling operation is completed, the exit of the shield body separation and hoisting is at the wellhead of the station. The amount is also very large; in order to ensure the construction period of the nodes, the station must construct the side tunnel bottom longitudinal beams, steel pipe columns, roof longitudinal beams and secondary lining in advance. Once the station is constructed, the distance between the main structure and the two sides of the steel pipe columns is only about 6.2 meters, while some large The overall diameter of the shield machine is relatively large, generally greater than 8 meters, which cannot meet the clearance required for the shield machine to drive to the wellhead of the station. In order to meet the requirements of the construction period, the shield machine must be dismantled in the tunnel
However, for large and medium-sized shield equipment, it is difficult to carry out dismantling operations even at wellheads with relatively ample space. Large-scale hoisting and dismantling equipment are required for auxiliary operations, and the difficulty of operating in relatively narrow holes can be imagined.
[0004] Due to the small space for dismantling the machine in the cave, large-scale equipment cannot be constructed. Therefore, special hoisting tools and transportation tools must be prepared to realize the dismantling of the machine in the cave. Due to the large volume and weight of the shield machine, it is relatively difficult to hoist and transport even after disassembly. Difficult. At present, there are no tools suitable for hoisting and transporting shield components in the cave, let alone a complete set of construction methods for dismantling the shield machine in the cave.
Some people also try to disassemble the shield machine in the cave, but the existing dismantling of the shield machine in the cave is in the case of limited space, and the shield machine is disassembled by cutting. After the whole machine is disassembled, The shield body and backup cover are divided into pieces, resulting in poor integrity of the whole machine after dismantling. Dismantling, transportation, hoisting and storage are all troublesome, and it is extremely difficult to restore the integrity of the shield machine in the later stage
Moreover, the traditional dismantling of the shield machine in the cave requires dividing the shield equipment and reducing the volume and weight of the shield body through physical separation to facilitate hoisting and transportation. There are many motorized fire points in the separation process of the mechanism, and a little carelessness can easily cause a fire and the safety performance is relatively poor
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Embodiment
[0078] Embodiment: The implementation of this invention is in a certain section of the Dongguan-Huizhou intercity in the Pearl River Delta region. The geological conditions of this section are complicated, and the shield construction is difficult. The construction progress seriously restricts the opening plan of the Dongguan-Huizhou intercity. The shield machine used in this project is a Robbins shield machine, which is a large and medium-sized shield machine with a diameter of 8.8 meters. Normally, after the shield tunneling operation is completed, the shield body is separated and hoisted at the The wellhead of the station, but due to the extremely tight construction schedule, in addition to the timely penetration of the shield section, the remaining engineering volume of the station is also very large. In order to ensure the construction period of the nodes, the station must construct the side tunnel bottom longitudinal beams, steel pipe columns, roof longitudinal beams and se...
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The invention provides a construction method for dismounting a shield tunneling machine in a tunnel. The construction method comprises the steps of hanging beam installation, conveying device preparing, feeding of the conveying device into a shield bored tunnel, cutterhead dismounting, lifting and conveying, tunnel upper half part dismounting, lifting and conveying, screw conveyor dismounting, lifting and conveying, main drive overturning support installation, cutterhead motor, speed reducer, propelling oil cylinder and personnel bin dismounting, lifting and conveying, shield tunneling machine main drive dismounting, lifting and conveying, splicing machine dismounting, well support and cantilever beam dismounting, lifting and conveying, dismounting, lifting and conveying of the lower half parts of the rest of the shield, splicing machine lifting and conveying, and trolley and back-up component separating and transferring. According to the construction method, a special hanging beam is adopted, a special conveying device is arranged to implement dismounting and transporting of the shield tunneling machine in the tunnel, the effect of machine dismounting in the tunnel achieves the effect of machine dismounting in a well opening, the completeness of the whole machine is good, the dismounted shield tunneling machine can be assembled again to be continuously used, and the problem that after an existing shield tunneling machine in the tunnel is dismounted, the completeness of the whole machine is poor is solved.
Description
technical field [0001] The invention belongs to a construction method for dismantling a shield tunneling machine in a cave, in particular to a construction method for dismantling a shield tunneling machine in a cave when the construction period is tight and the shield tunneling machine is still complete after dismantling the shield tunnel. Background technique [0002] With the rapid development of society and the rapid changes of cities, underground rail transit has increasingly become the main means of relieving urban traffic pressure. As a modern underground engineering construction machine, the shield machine plays an irreplaceable role in subway construction. In shield tunneling construction, every time a shield section is completed, the dismantling of the shield machine is an indispensable process. Due to the large volume and self-weight of the shield machine, more supporting and hoisting equipment are required, so the conventional dismantling operation of the shield ...
Claims
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IPC IPC(8): B66C23/16B66C13/04B66C13/08E21F13/00E21D9/08
CPCB66C13/04B66C13/08B66C23/166E21D9/08E21F13/006
Inventor张昆峰刘志斌蔡力王建军曾恕辉万维燕刘培洪
Owner中铁十一局武汉重型装备有限公司