Sand gush prevention equipment for water-rich sand layer and construction method of sand gush prevention equipment

• Main Authors: XU SHAOPING, LIU HONGYU, RAO SHENGBIN, ZHOU WEN, LIANG PENGGANG, HE SHIMEI, TANG ZHENYA, SU CHUNSHENG, MA TIANCHANG, DING CHUANQUAN, WEI SHOUFENG
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2020
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention discloses a sand gush prevention equipment for a water-rich sand layer and a construction method of the sand gush prevention equipment, and relates to the technical field of tunnel construction. The construction method includes the following steps that (S1) pre-construction preparation is conducted and a waterproof board laying trolley is prepared in position; (S2) geotextile is hung; (S3) laying, fixing and welding of waterproof boards are carried out; and (S4) overall installation of second lining steel bars is conducted, a track extending along a tunnel is arranged in the tunnel, and the waterproof board laying trolley can walk along the track. According to the sand gush prevention equipment for the water-rich sand layer and the construction method of the sand gush prevention equipment, the ultrasonic welding fixation process and the vertical extrusion welding technology are adopted, the quality problems of construction, installation, fixation and welding of the waterproof boards are well sol