Structure for draining water in water-rich karst double-track tunnel by using parallel adit

• Main Authors: LIU QIAN, WANG XUAN, LIU JIN, GAO JIAKANG, LUO XIANGANG, YUE SHAOFEI, FANG YUZHONG, TIAN YANGYANG, JIA TAO, ZHOU JIAJUN, WAN XIN, CHEN CHANGGUI, ZHU ZHAO, YANG HAIHANG, ZHENG DONGDONG
• Format: Patent
• Language: Chinese; English
• Published: 06.09.2022
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The utility model discloses a drainage structure of a water-rich karst double-track tunnel by using a parallel adit, and the drainage structure of a main tunnel B-track side is as follows: a transverse drainage channel is arranged at the position of a water burst point and is connected to a parallel adit drainage ditch; the drainage structure for gushing water below a camber line on the A line side of a main tunnel comprises a J1 drainage gallery which is excavated by 15 m or above along a karst pipeline, a pedestrian access hole is reserved in the side, close to the A line, of the J1 drainage gallery, a water drop bank corresponding to a water outlet is excavated in an expanding mode on the side, away from the A line, of the J1 drainage gallery, and a grit chamber is arranged at the lower end of the water drop bank. Connecting to a parallel guide drainage ditch through an artificial culvert positioned below the main tunnel; the drainage structure for the gushing water above the camber line on the A line side