通过分析充填料浆在管道自流输送系统中的运动形式与充填骨料固体颗粒的沉降规律，得知充填料浆能否稳定地输送到采空区跟输送速度及水平管道的长度有关。结合孙村煤矿的煤矸石似膏体充填料浆的特点，利用Fluent流体分析软件对料浆的管道输送过程进行了模拟，并从理论上分析了以煤矸石作为主要骨料的似膏体利用管道自流输送的可行性。模拟分析表明，料浆的自流压差能够克服在管道自流输送过程中的沿程阻力损失，并且在3.82 m/s的水平管道输送速度下，料浆垂直脉动速度分量38.3 cm/s大于煤矸石的干涉沉降速度0.99 cm/s，因此，似膏体能够自流输送到采空区。

Through the analysis of movement forms of backfilling slurry in the pipeline self-flowing transportation system and the sedimentation law of backfilling aggregate granule, it is known that the transportation stability of backfilling slurry is related to transportation speed and the length of horizontal pipeline. Combined with the characteristics of gangue paste-like slurry in Suncun Mine, the pipeline transport process of slurry is simulated by Fluent, which is a well-known fluid analysis software, and also the self-flowing transportation feasibility of paste-like slurry with gangue as main backfilling aggregate is researched in theory. The research shows that the self-flowing pressure can overcome the resistance loss in the way of the transmission pipeline. When the horizontal pipe transmission speed is 3.82 m/s, the vertical pulsating velocity component of slurry (Sv) can reach 38.3 cm/s and the interfering sedimentation speed of gangue (Vgg) is just 0.99 cm/s, it can know that Sv > Vgg. Therefore, paste-like slurry can arrive at the mined-area by self-flowing transportation.

科技部“十一五”科技支撑计划课题(2008BAB32B03)