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鉴于目前铁路类建设项目水土流失监测结果大多不能反映建设项目新增水土流失的现状,以天水至平凉铁路工程为例,在充分调查的基础上,通过划分监测样本,确定样本总量,利用事前分层抽样中的样本设计和抽样设计,对大型线型项目水土流失监测点的空间布局进行了控制和优化。结果表明:天水至平凉铁路工程共需设置42个水土流失监测点,监测点分布符合铁路工程新增水土流失的规律,布局合理,优于原水土流失监测点的布局方案。
In view of the fact that most monitoring results of soil and water loss of railway construction projects can not reflect the current situation of newly added water and soil loss in construction projects, taking Tianshui-Pingliang railway project as an example, on the basis of adequate investigation, by dividing the monitoring samples and determining the total amount of samples, The sample design and sampling design in stratified sampling control and optimize the spatial layout of soil and water loss monitoring points in large scale linear projects. The results show that a total of 42 water and soil loss monitoring points are required for the Tianshui-Pingliang railway project. The distribution of monitoring points is in accordance with the law of newly added water and soil loss in railway construction. The layout is reasonable and is superior to the layout scheme of the original water and soil loss monitoring points.