Tunnel shield construction-aided contact channel construction method
A technology for connecting passages and tunnel shields, which is applied in tunnels, tunnel linings, and earthwork drilling and mining, etc., can solve the problems of delaying the overall construction period and the impact of shield tunnels, saving time, reducing manual handling, and facilitating popularization and use.
Active Publication Date: 2019-10-25
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] like Figure 1 to Figure 10 As shown, a kind of communication channel construction method with the help of tunnel shield construction of the present invention comprises the following steps:
[0064] Step 1. Build a temporary supporting steel frame: Before construction, carry out construction stakeout in both the tunnel left line 1 and the tunnel right line 2, determine the opening position of the connecting channel 3, and build the left line temporary supporting steel frame in the tunnel left line 1 4. Build the temporary support steel frame 5 for the right line in the right line 2 of the tunnel, the temporary support steel frame 4 for the left line and the temporary support steel frame 5 for the right line have the same structure;
[0065] The temporary support steel frame 4 on the left line includes the steel support that M is matched with the inner wall of the segment 25 of the tunnel. The two steel supports located in the center are symmetrically arranged on both s...
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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 communication channel construction, and in particular relates to a communication channel construction method by means of tunnel shield construction. Background technique [0002] The shield connection channel is generally set in the middle of the two tunnels, and becomes a channel between the two tunnels, which plays the role of communication, drainage and fire prevention. If there is a problem in one tunnel as a whole, pedestrians can transfer to the other tunnel through the connecting channel. , the safety factor of pedestrians will also be greatly increased, so it is called "escape channel", and it is also 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 quick rescue. Most of the existing communication passages are constructed af...
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