Advanced support structure for oversized variable-section tunnel

Advanced support structure for oversized variable-section tunnel

  • CN 104,500,100 A
  • Filed: 12/15/2014
  • Published: 04/08/2015
  • Est. Priority Date: 12/15/2014
  • Status: Active Application
First Claim
Patent Images

1. a super large Varied section tunnel advanced support structure, comprise the country rock in main hole (1) to be excavated, it is characterized in that main hole (1) vault place country rock to be excavated is arranged with the two-layer high-pressure horizontal rotary churning pile (3) of arranging along tunnel longitudinal direction outside tunnel excavation outline line, the advanced long pipe shed (4) arranged along tunnel longitudinal direction is embedded with between two-layer rotary churning pile (3), the face arch (5) in main hole (1) to be excavated is provided with multiple high-pressure horizontal rotary churning pile (3) arranged along tunnel longitudinal direction along tunnel excavation direction, the face Core Soil (6) in main hole (1) to be excavated is provided with multiple advanced glass anchor tube (7) along tunnel excavation direction.

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