Novel tunnel structure

• Main Author: DU SHUAIQUN
• Format: Patent
• Language: English
• Published: 10.06.2015
• Subjects: EARTH DRILLING; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; GALLERIES; HYDRAULIC ENGINEERING; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; SOIL SHIFTING; TUNNELS; UNDERGROUND OR UNDERWATER STRUCTURES

The utility model discloses a novel tunnel structure which comprises a tunnel body, a branch portal side slope positioned on the outer side of the tunnel body and a side slope collapse body connected with the branch portal side slope, wherein a plurality of grouting pipes are arranged in the side slope collapse body; a plurality of grouting reinforcement layers are formed in the side slope collapse body through grouting of the grouting pipes; grouting pipe extension sections are arranged at the outer ends of the grouting pipes and are positioned in front of the tunnel portal to form a construction safety protection shed; a plurality of grouting holes are uniformly distributed in each of the grouting pipes. According to the novel tunnel structure, the grouting pipes are driven into the safety construction area of the side slope, so that the side slope can be primarily anchored, and grouting is performed on the side slope through the grouting pipes, a reinforcement layer is formed, and side slope reinforcement and tunnel excavation construction can be performed under the protection of the construction safety protection shed formed by the grouting pipe extension sections, the workload of branch portal slumping treatment can be simplified, the adaptation of tunnel branch portal construction on the geological conditions can be increased, and the construction safety is improved.