Vault cavity surrounding rock reconstruction method used after water and mud burst of large-section tunnel
A large-section, mud-outburst technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of long treatment period, unsatisfactory effect, and high investment, so as to eliminate potential safety hazards and reduce the probability of secondary water gushing and mud outbursts , low cost effect
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[0030] The technical solution adopted by the present invention to solve its technical problems is:
[0031] 1) Situation analysis of water and mud gushing parts
[0032] After the water and mud gushing disaster occurred in the tunnel arch, after checking the occurrence process of the water and mud gushing and the on-site mud gushing objects, combined with the comprehensive analysis of the geological data provided by the tunnel design, an initial plan for the treatment of the water and mud gushing can be formulated. Generally, the initial treatment plan is to strengthen the affected uncollapsed vault with grouting and clean up and reinforce the mud-outburst dregs to stabilize the affected vault and slag from collapsing. At the same time, observe and analyze the dregs to facilitate the next step Formulate a treatment plan for the dregs. When the muck is cleaned up to a position 15-10 meters away from the water gushing and mud gushing, the treatment should be stopped, and the ne...
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