Method for combined exploitation of deep coal bed gas and terrestrial heat

• Main Authors: ZHANG ZHENGGUANG, XU QIANG, BAI XIUJIA, MIAO QUANYUN, REN SHAN, TIAN LI
• Format: Patent
• Language: Chinese; English
• Published: 01.09.2023
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; RANGES; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; VENTILATING; WEAPONS

The invention provides a deep coal bed gas and terrestrial heat combined mining method which comprises a deep coal bed gas and terrestrial heat combined mining method and a mining process, and the mining process comprises position determination, drainage and pressure reduction and combined mining. According to the implementation method, the position of a mining area is surveyed through an expert, the position where the coal bed gas amount is large, the geothermal capacity is high and mining is easy is found in the mining area, a mining device is placed to conduct deep excavation to the underground, and sludge deep excavation to the position of the coal area is put out from the underground in a non-segmented mode through non-segmented water injection on the ground. The method comprises the following steps: firstly, exploring the specific position of a mining area by an expert, confirming the scope of the mining area which can be applied, ensuring the application performance and the safety of a project during a