A shield construction method for a working well passing through a pipe gallery
A construction method and technology for working wells, which are applied in shaft equipment, wellbore lining, earthwork drilling and mining, etc., can solve the problems of poor sealing effect, cumbersome and expensive reinforcement of the receiving end and starting end of shield tunneling, and achieve Accelerate the construction progress, improve the quality of terminal connection, and improve the efficiency obviously.
Active Publication Date: 2022-03-01
CHINA RAILWAY NO 2 ENG GRP CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, such as cumbersome reinforcement of the receiving end and the starting end of the shield construction, poor sealing effect and high cost, and provide a shield construction method for the working well of the tunnel tunnel
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Embodiment 1
[0049] Such as Figure 9 Described, a kind of shield tunneling construction method of working well through pipe gallery, comprises the following steps:
[0050] a. Determine the center line of the wellhead tunnel in the foundation pit, and install the door connection steel ring 2 at the steel plates reserved for the door at the receiving end and the starting end;
[0051] b. Assemble the straight sleeve 1 in the working well, and connect the two ends of the straight sleeve 1 to the connecting steel ring 2 corresponding to the door after the assembly is completed;
[0052] c. Check the tightness of the straight sleeve 1, set a lateral support 3 outside the cylinder of the straight sleeve 1, set a force transmission frame 4 under the straight sleeve 1, and pour the inner bottom of the straight sleeve 1 Concrete cushion 5, filling muck into the straight sleeve 1 and checking the internal pressure of the straight sleeve 1;
[0053] d. The shield machine excavates in the straight s...
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The invention relates to the field of shield construction, in particular to a shield construction method for a working well passing through a pipe gallery, comprising a straight sleeve, the outer periphery of the straight sleeve is provided with longitudinal and circumferential ribs, and the end surface of the straight sleeve is There are card slots. According to the center line of the tunnel at the wellhead, install the door connecting steel rings at the steel plates reserved on both sides of the door, install the straight sleeve in the working well, and install the door connecting steel rings on both sides with the corresponding ends of the straight sleeve. The buckle connection makes the connection between the doors on both sides to form a channel, and after the buckle is completed, the buckle gap is welded and closed, and the straight sleeve is supported and reinforced, filled with slag and inspected. When the shield machine excavates in the straight sleeve, the shield segments are closed and formed into rings with improved light segments. Adopting the shield tunneling construction method of the present invention overcomes the deficiencies in the prior art such as cumbersome reinforcement of the receiving end and the starting end of the shield tunneling construction, poor sealing effect and high cost.
Description
technical field [0001] The invention relates to the field of shield construction, in particular to a shield construction method for a working well passing through a pipe gallery. Background technique [0002] In the tunnel construction of the shield tunneling method in the urban utility gallery project, the number of working wells is relatively large and the distance between them is relatively short. It is even more difficult to control risks in permeable formations that are prone to water and sand inrush. At present, the tunnel exit sealing method of the shield machine is mainly to use the rubber cord of the tunnel door and the tunnel door pressing plate to seal the tunnel door, and the freezing method is also used to reinforce the ground to achieve a certain sealing effect. If the door is sealed with the rubber cord of the door and the pressure plate of the door, due to the block layout of the sealing plate, there are many gaps between the plates, resulting in poor sealin...
Claims
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IPC IPC(8): E21D9/06E21D11/10E21D11/08E21D11/18E21D9/14
CPCE21D9/06E21D11/10E21D11/08E21D11/18E21D9/14
Inventor 陈强夏炜洋李必棋陈卓刘广
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD