Method for reinforcing concealed tunnel
A tunnel and underground excavation technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as water gushing and sand gushing, mud loss, and short construction length, so as to reduce the probability of hole collapse, block mud loss, and improve The effect of construction efficiency
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[0041] The present invention will be described in detail below in conjunction with the accompanying drawings. As a part of this description, the principle of the present invention will be described through embodiments. Other aspects, features and advantages of the present invention will become clear at a glance through the detailed description. In the referenced drawings, the same reference numerals are used for the same or similar components in different drawings.
[0042] Such as figure 1 As shown, the embodiment of the present invention provides a reinforcement method for underground excavation tunnels. Before the excavation of the tunnel, a pipe shed is constructed on the arch of the tunnel, and the pipe shed is reinforced by grouting. The method includes the following steps:
[0043] Step S101 , according to the design position of the tunnel arch and the design requirements of the construction of the pipe shed, build a height-adjustable working platform.
[0044] Step S102...
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