TBM tunneling and secondary lining synchronous construction method at mucking of continuous belt conveyor and trolley
A secondary lining and simultaneous construction technology, which is applied in shaft lining, tunnel lining, earthwork drilling and mining, etc., can solve the problems of inability to realize simultaneous construction of secondary mold lining and long construction period, and solve the problems of long exposure time of surrounding rock, The effect of shortening the tunnel construction period
Inactive Publication Date: 2011-05-18
CHINA RAILWAY 18TH BUREAU GRP CO LTD
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Problems solved by technology
In the past, regardless of whether the rail transportation method or the continuous belt conveyor was used to extract the muck, the secondary mold lining was applied after the TBM excavation was completed. It was impossible to realize the simultaneous construction of the TBM excavation and the secondary mold lining, and the construction period was long. And it does not conform to the requirements issued by the Ministry of Railways, the Ministry of Construction, etc., that the distance between the secondary lining and the face of the tunnel excavation should not exceed the limit determined by the document specification
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[0029] (1) Assemble the TBM, which is basically completed. After entering the preparation hole, continue to improve and debug the whole machine. At the same time, assemble 2 synchronous lining trolleys (1# and 2# trolleys) at the TBM assembly site. If conditions permit, 2 trolleys Assemble at the same time, otherwise assemble 1# and 2# trolleys in sequence.
[0030] (2) After the trolleys are assembled, enter the preparation hole and drive to the area close to the TBM. If the two trolleys are assembled at the same time, they will enter the hole at the same time, otherwise they will enter in sequence.
[0031] (3) Install the continuous belt conveyor and pass through the two lining trolleys to make it a complete system and reach the state of normal operation.
[0032] (4) The TBM and the two trolleys step forward at the same time, and extend the continuous belt conveyor while stepping until it reaches the tunnel surface. If the distance of the preparatory hole is long, the tur...
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Abstract
The invention discloses a tunnel boring machine (TBM) tunneling and secondary molded lining synchronous construction process under a mucking condition of a continuous belt conveyor. The process comprises the following steps in turn: firstly, in a period of basically finishing assembling an open-type hard rock TBM, making the open-type hard rock TBM enter a preparation cavity for continuing improving and debugging the overall machine, assembling two synchronous lining trolleys; secondly, following by using the two synchronous lining trolleys when the TBM steps in the preparation cavity, and simultaneously finishing assembling the continuous belt conveyor; and finally, starting tunneling when the TBM steps in place, starting synchronous construction when the lining trolleys arrive at a lining station, closely following the TBM by using the 1# trolley for lining a tunnel section with poor surrounding rock in time, and following the 1# trolley by using the 2# trolley for finishing the lining operation of a construction section. The process solves the problem that the TBM tunneling and the secondary molded lining cannot be constructed synchronously under the mucking condition of the continuous belt conveyor, greatly shortens the overall construction period of a tunnel, greatly increases the safety in a tunnel construction period, and meets the requirement on implementing the secondary lining after the tunnel is started to be tunneled.
Description
Technical field: [0001] The invention relates to the construction technology of a long tunnel using an open tunnel boring machine, the synchronous construction technology of TBM excavation and secondary mold lining under the condition of continuous belt machine slugging, and a synchronous lining trolley. It belongs to the technical field of long tunnel construction. Background technique: [0002] With the continuous improvement of tunnel design and construction level, TBM method construction has become the first choice for long tunnels, and this construction method is being vigorously promoted in China. In the past, regardless of whether the rail transportation method or the continuous belt conveyor was used to extract the muck, the secondary mold lining was applied after the TBM excavation was completed. It was impossible to realize the simultaneous construction of the TBM excavation and the secondary mold lining, and the construction period was long. Moreover, it does not...
Claims
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Inventor 邓勇王雁军齐梦学史振春苏睿黄欣张富国赵战欣
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD