Underground drill hole gas-water separating type gas pumping drainage amount monitoring method

• Main Authors: ZHANG XUECHAO, HOU JINLING, WANG DONG, ZHANG HUIJIE, LIU XIAOGANG, WANG WEIHUA, SHEN CHUNMING, ZHANG SHULIN, CHENG ZHIHENG, ZHANG LANG, SUN XIAOJUN
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2017
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

An underground drill hole gas-water separating type gas pumping drainage amount monitoring method includes the steps: communicating a drill hole connection branch pipe of a T-shaped pipe with a gas pumping drainage drill hole, communicating a gas flow meter connection branch pipe of the T-shaped pipe with a gas inlet end of a gas flow meter, and communicating a U-shaped pipe connection branch pipe of the T-shaped pipe with a water inlet end of the U-shaped pipe; allowing an included angle between the drill hole connection branch pipe and the gas flow meter connection branch pipe and a horizontal plane to be 10-30 degrees, and allowing the gas inlet end of the gas flow meter to be 10-20 cm higher than a highest surface of the gas flow meter connection branch pipe of the T-shaped pipe; and allowing an end surface of a water outlet end of the U-shaped pipe to be 5cm lower than an end surface of the U-shaped pipe connection branch pipe of the T-shaped pipe so as to inject water into the water outlet end of the U-