Subway tunnel anti-collapse construction method
A construction method and technology for tunnels, which are applied in earth-moving drilling, mining equipment, temporary shields, etc., can solve the problems of wasting time, increasing labor intensity of workers, and being unfavorable for the development of subway tunnels, saving time and reducing labor intensity.
Active Publication Date: 2019-03-08
山东国隧新材料产业发展有限公司
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[0004] However, the above-mentioned invention has a disadvantage that in the process of tunnel construction and excavation, it is necessary to wait for the concrete layer to solidify when laying the concrete layer, which is a waste of time, and workers will spend a lot of effort in laying, increasing the labor intensity of workers, which is not conducive to subway tunnels development of work
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[0041] The technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0042] A kind of subway tunnel anti-collapse construction method, comprises the following steps:
[0043] Step 1: Excavate Tunnel, Combine Figure 5, the cross-section of the subway tunnel is generally circular when excavated, but the lower end is flat. Part of the earthwork excavation of the open cut is excavated at a rate of 6m along the longitudinal length, and the excavation is stopped immediately after the excavation reaches 6m;
[0044] Step 2: After stopping the excavation, lay the bottom plate 1 at the bottom of the tunnel. The bottom plate 1 is provided with an arc-shaped top plate 2, and the arc-shaped top plate 2 is placed with an arc-shaped sticking plate 3. The arc-shaped sticking plate 3 is facing the top wall of the tunnel. A plurality of anchor rods 31 are arranged on one side, and the ends of the anchor rods 31 are...
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The invention relates to a subway tunnel anti-collapse construction method, and belongs to the technical field of subway tunnel construction. The subway tunnel anti-collapse construction method includes the following steps that firstly, a tunnel is excavated; secondly, after tunneling is stopped, a base plate is laid at the bottom end of the tunnel, an arc-shaped top plate is arranged on the baseplate, an arc-shaped pasting plate is placed on the arc-shaped top plate, the face, directly facing the top wall of the tunnel, of the arc-shaped pasting plate is provided with a plurality of anchor rods, the base plate is provided with a lifting device for driving the arc-shaped top plate to ascend and descend, and the anchor rods on the arc-shaped pasting plate are stressed to be inserted into the top of the tunnel; thirdly, the tunnel is continuously excavated in the longitudinal direction; fourthly, the arc-shaped top plate is lowered through the lifting device, the whole base plate is pushed forwards into the tunnel excavated later, and the arc-shaped pasting plate pasted on the top of the tunnel is supported up through a supporting piece; and fifthly, the arc-shaped pasting plate isplaced on the upper part of the arc-shaped top plate, and the lifting device is started to insert the anchor rods into the top of the tunnel in a jacking mode. According to the subway tunnel anti-collapse construction method, the effects that the time is saved and the labor intensity is lowered can be achieved.
Description
technical field [0001] The invention relates to the technical field of subway tunnel construction, in particular to a construction method for preventing landslides in subway tunnels. Background technique [0002] In the construction of tunnels in poor geological conditions, phenomena such as the roof of the tunnel falling down, the side walls sliding, and even serious accidents such as roof fall may often occur. These phenomena are called landslides during construction. Landslides will threaten personal safety and delay the construction period. Therefore, the occurrence of landslides should be prevented during construction. If landslides cannot be avoided, timely and accurate treatment is also required to reduce the damage caused by landslides. [0003] The Chinese patent whose application publication number is CN106703837A discloses a kind of subway tunnel anti-collapse construction method, comprising the following steps: Step 1: Excavating the earthwork, in the process of...
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IPC IPC(8): E21D19/00
CPCE21D19/00
Inventor 黄仁富潘辉陈伟尹阳
Owner 山东国隧新材料产业发展有限公司