1、均压局部通风法的原理:根据风流在井巷内流动的规律,按照空气动力学的观点,由于机械力的作用,往往造成了采煤工作面的回风巷道形成了低压区域,再加上采空区的顶板冒落不够严密,所以造成了在送下分层回风巷道时,风流往往从上分层的采空区大量的漏到新开掘的巷道中来,同时也相应的将采 1, the principle of pressure equalizing local ventilation: According to the law of the flow in the roadway in accordance with the wind flow, according to the aerodynamic point of view, due to the mechanical force, the return airway of the coal mining face often forms a low pressure area Coupled with the goaf roof caving is not tight enough, resulting in the delivery of stratified return airway, the wind often stratified from the gob of a large number of leaks to the newly excavated roadway, but also the corresponding Will adopt