种在采煤过程中提高采空区瓦斯抽采浓度和流量的方法

• Format: Patent
• Language: Chinese
• Published: 27.07.2016
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

种在采煤过程中提高采空区瓦斯抽采浓度和流量的方法，首先沿工作面回采方向开挖高抽巷。工作面回采过程中，在进风巷中铺设注气管道，注气管道出气口位于采空区内的氧化带内，且高于采空区内遗煤。在工作面的支架后方设置注浆挡板，沿回风巷和工作面铺设注浆管，注浆管沿工作面布置有穿过挡板的充填管。充填支架后方空洞区，形成充填密闭墙，防止采空区内注入的CO泄露至工作面。在进风巷中沿管路向采空区内的氧化带注入液态CO置换CH。本发明提高了CH的抽采浓度及流量。