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广梅汕铁路经过水土流失强度较大的粤东山地丘陵区,其电气化改造工程的施工活动会增大沿线的水土流失量。本研究采用模式预测法对改造施工期内不同的建设工程引发的水土流失量进行了估算。结果表明,电气化改造工程占地范围内原地貌背景水土流失量为230.6 t,在施工期间如果不采取任何防护措施,工程建设可能造成的水土流失量为919.6 t,改造工程可能造成的新增水土流失量为689.0 t,其中线路改造工程新增的水土流失量最大,达到355.4 t,占可能新增的水土流失总量的51.6%,变电所和接触网工区建设各占23.5%和22.6%,沿线雨水泵站建设新增的水土流失量最小,只占新增水土流失总量的2.3%左右。在水土流失防治上,重点防治区段是21个车站的线路改造地段,其次是沿线5个变电所和5个接触网工区的建设工地。
After the Meizhou-Shantou Railway passes the hilly area of eastern Guangdong, where the intensity of soil and water loss is relatively large, the construction activities of its electrification renovation project will increase the amount of soil and water loss along the line. In this study, model predictions were used to estimate the amount of soil and water loss caused by different construction projects during the reconstruction period. The results show that the amount of soil and water loss in the original landscape of the electrification renovation project is 230.6 t. If no protective measures are taken during the construction period, the amount of water and soil loss caused by the construction may be 919.6 t, and the newly added water and soil loss may be caused by the renovation project The amount of soil and water loss increased by 355.4 t, accounting for 51.6% of the total newly added water and soil loss, and the construction of substation and catenary was 23.5% and 22.6% respectively, The amount of soil and water loss newly added along the rainwater pump station construction is the smallest, accounting for only about 2.3% of the total newly added water and soil loss. In the prevention and control of soil and water loss, the key prevention and control sections are the line reconstruction sections of 21 stations, followed by the construction sites of 5 substations and 5 contact network work areas along the line.