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长距离浆体管道的典型设计寿命通常为15至25年,故管道磨蚀率的确定对管道工程经济效益有较大影响。这里所说的磨蚀是化学腐蚀和物理磨损的综合表征,其中每个因素的影响大小与特定的管道输送工程相关,如细颗粒浆体管道输送工程,化学腐蚀在管道磨蚀中起主导作用,这类管线输送流速一般设计为1.5~2.5 m/s,为高度均质流,其管道底部与顶部磨蚀相差不多,对流速不敏感。但中、粗颗粒如原矿粉及尾矿的管道输送工程,管道的磨蚀方式与细颗粒浆体不同,其主要集中在管道的底部与弯头外弧侧,对流速较为敏感。细颗粒与中、粗颗粒浆体管道沿管线的磨蚀分布规律基本相似。
The typical design life of long-distance slurry pipes is usually 15 to 25 years, so the determination of pipeline abrasion rate has a greater impact on the economic benefits of pipeline engineering. Abrasiveness as mentioned here is a comprehensive representation of chemical corrosion and physical wear. The influence of each factor is related to the specific pipeline project, such as the fine-grained slurry pipeline project. Chemical corrosion plays a leading role in pipeline erosion. The general design of pipeline transfer flow rate of 1.5 ~ 2.5 m / s, a highly homogeneous flow, the bottom of the pipeline and the top of the erosion of the same, not sensitive to the flow rate. However, the coarse particles such as ore powder and tailings pipeline project, pipeline erosion and fine particles of different slurry, which is mainly concentrated in the bottom of the pipe and elbow arc side of the flow rate is more sensitive. Abrasive distribution of fine and medium-sized and coarse-sized slurry pipes along the pipeline is basically similar.