Water burst blocking device and method for tunnel drilling

• Main Authors: WU QI, GUO ZHIYONG, LU QINGZHAO, ZHANG QIANG, MA DONG, WANG HAITAO
• Format: Patent
• Language: Chinese; English
• Published: 24.08.2018
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a water burst blocking device and method for tunnel drilling. The water burst blocking device for tunnel drilling comprises an air pipe and a grouting pipe, two ends of the airpipe are blocked, a plurality of sections of elastic tubular rubber films are arranged outside the air pipe in the axis direction of the air pipe in a sleeving mode, two ends of the rubber films areconnected with the air pipe in a sealing mode, and each section of rubber films communicates with the interior of the air pipe through a plurality of vent holes formed in the peripheral surface of airpipe. One end of the air pipe is connected with an air injection pipe communicating with the interior of the air pipe, and the grouting pipe is located in the air pipe and penetrates through the twoends of the air pipe. The water burst blocking device and method for tunnel drilling has the beneficial effects that the structure is simple, the cost is low, the reliability is high, the humanizationis realized, and the water b