A construction method of communication passage by means of tunnel shield construction
A communication channel and tunnel shield technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of shield tunnel influence and delay of the overall construction period, and achieve the effect of saving time, reducing manpower handling, and good use effect
Active Publication Date: 2020-09-08
中铁二十局集团第五工程有限公司
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Problems solved by technology
Most of the existing communication passages are constructed after the main body of the tunnel is completed and after the shield tunnel is penetrated, which has a great impact on the subsequent construction of the shield tunnel, and at the same time has a great impact on its own muck transfer and concrete pouring. Inconvenient, seriously delaying the overall construction period
Method used
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Embodiment Construction
[0063] Such as Figure 1 to Figure 10 As shown, the construction method of the connecting passage by means of tunnel shield construction of the present invention includes the following steps:
[0064] Step 1. Set up the temporary support steel frame: Before construction, carry out construction lofting in both the left line 1 of the tunnel and the right line 2 of the tunnel, determine the position of the portal of the connecting passage 3, and build the left line temporary support steel frame in the left line 1 of the tunnel 4. Build the right line temporary support steel frame 5 in the right line 2 of the tunnel. The left line temporary support steel frame 4 and the right line temporary support steel frame 5 have the same structure;
[0065] The left-line temporary support steel frame 4 includes steel supports matched with the inner walls of the tunnel segments 25. The steel supports are arranged at equal intervals, where M is an even number not less than 4, and the steel supports ...
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The invention discloses a tunnel shield construction-aided contact channel construction method. The method comprises the steps of 1, building a temporary support steel frame; 2, dismounting duct pieces at the portal position of a contact channel and transporting the duct pieces out from a tunnel; 3, setting a hook rail; 4, enabling a first transport cart to be operated; 5, enabling a second transport cart to be operated; 6, repeating the steps 4 and 5 for multiple times to ensure the construction progress of the contact channel while ensuring the normal tunneling of the tunnel shield construction; 7, carrying out a sprayed concrete operation; 8, carrying out grouting supporting; and 9, carrying out second liner and inverted arch pouring. The supply and transport cooperation, for the tunnelshield construction, of the internal combustion locomotive in the tunnel shield construction process are utilized to provide supply for the contact channel, and the muck is transported out from the tunnel; the contact channel construction and the tunnel shield construction are carried out crossly to make a time difference; the tunnel shield construction is principal and the contact channel construction is secondary, so that the construction progress of the contact channel is ensured while the normal tunneling of the tunnel shield construction is prevented from being influenced.
Description
Technical field [0001] The invention belongs to the technical field of connection channel construction, and specifically relates to a connection channel construction method by means of tunnel shield construction. Background technique [0002] The shield connecting passage is generally set in the middle of the two tunnels and becomes a passage set between the two tunnels, which plays the role of connection, drainage and fire prevention. If there is a problem with one tunnel as a whole, pedestrians can transfer to another tunnel through the connecting passage , The safety factor of pedestrians will also be greatly increased, so it is called "escape channel", and it is convenient for rescuers to reach the communication channel from another tunnel when there is a problem in one tunnel, and then enter the place that needs rescue through the communication channel , To achieve the purpose of rapid rescue. Most of the existing connecting passage constructions are carried out after the c...
Claims
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IPC IPC(8): E21D9/14E21D9/06E21D19/00E21D9/12E21D11/10E21D11/40
CPCE21D9/06E21D9/126E21D9/14E21D11/105E21D11/40E21D19/00
Inventor 范伟亮杨瑞朝魏辉韩佳尧加武荣张小林金琦李朝成熊敏吕岩郑雷
Owner 中铁二十局集团第五工程有限公司