Gas extraction method through drilling along coal seam on basis of extraction pipeline valve control

The invention discloses a gas extraction method through drilling along a coal seam on the basis of extraction pipeline valve control. The method comprises the following steps that 1) gas along the coal seam is uniformly extracted from an angle of the extraction drilling arrangement in an extraction process, an air intake roadway and an air return roadway start to be tunneled from the position of astopping line, along with tunneling of the roadways, extraction drilling holes are sequentially arranged on the air inlet roadway side, when tunneling is advanced to the position of an open-off cut,the extraction drilling arrangement is ended, an extraction valve adjacent to the position of the stopping line is adjusted down, an extraction valve adjacent to the position of the open-off cut is adjusted up, more negative pressure is distributed to the extraction drilling holes adjacent to the open-off cut, and an extraction flow in the extraction drilling holes adjacent to the open-off cut position is increased; and 2) the gas along the coal seam is efficiently extracted according to the pressure distribution rule on the ore and the permeability coefficient of the coal seam, valves, adjacent to a working face area, of a pressure relief area and valves of a pressurization area are closed, valves, adjacent to the pressurization area, of the pressure relief area are opened all, and the purpose of efficient gas extraction is achieved.