In-situ large-area drill-hole furnace building coal gasification and kerosene and/or coal bed gas simultaneous production method

The invention discloses a coal gasification and kerosene and/or coal bed gas simultaneous mining method for in-situ large-area drilling and furnace building, and relates to the technical field of coal mining. The method specifically comprises the steps that an injection well is drilled on the ground to a target coal seam, then a horizontal well is constructed in the target coal seam, and the target coal seam is divided into section coal; oil displacement is carried out in a hydraulic fracturing and carbon dioxide pressure injection mode, or coal bed gas is efficiently pumped out through a water pressure control drill hole; after coal bed oil displacement or coal bed gas drainage, horizontal wells on the two sides of coal in a first section are changed into production wells, the production wells are divided into gas inlet channels and gas outlet channels, ventilation drill holes are constructed to form a honeycomb-briquette-shaped gasification furnace, and combined gas generated by combustion is promoted after