燃料载荷和含水率对平坡地表火蔓延影响实验研究

燃料载荷和含水率是森林火灾中地表火蔓延的重要影响因素。选取香樟叶和云南松松针作为研究对象，开展了不同燃料载荷和含水率条件下平坡地表火蔓延实验。研究结果表明：同一燃料载荷下，随含水率增大，火焰长度、火蔓延速率、火线强度和辐射热流减小，滞留时间增大；同一含水率下，燃料载荷增大，火焰长度、火蔓延速率、火线强度、辐射热流和滞留时间均增大。

Experimental study on the effects of fuel load and water content on surface fire spread over flat fuel bed

Fuel load and water content are important factors affecting surface fire spread in forest fires.This work selected cinnamomumcamphora leaf and pine needle of pinusyunnanensis as the research object,carried out the fire spread experiment under flat slope conditions,with different fuel load and moisture content.It was observed that under the same fuel load condition,the flame length,the rate of spread,the fireline intensity and the radiative heat flux decreased with the increase of water content,while the residence time increased.Under the same moisture content condition,the flame length,the rate of spread,the fireline intensity,the radiative heat flux and the residence time increased with increasing fuel load.