输电线路工程水土保持监测样点布设探讨

Layout of monitoring points for soil and water conservation in power transmission line project

输电线路工程线路长、空间跨度大、扰动分散,造成水土流失呈点状分布,使得布设样点监测输电线路工程的水土保持状况极为困难。以糯扎渡送电广东±800 k V直流输电工程(云南区)为例,利用分层抽样和预监测的方法计算出水土保持监测样点的样本容量,并采用适度法对样本容量进行分配,提出了结合施工现场的输电线路水土保持监测样点布设方案,结果可为同类地区线型工程水土保持监测样点的布设提供依据和参考。

Power transmission line project is characterized as long distance,large span and scattered disturbance,which leads to point-like distribution of soil erosion,making it difficult to monitor the status of soil and water conservation in power transmission lines project. In this paper,taking Nuozhadu-Guangdong ± 500 k V DC transmission project as the case,the soil and water conservation monitoring sample points were calculated based on stratified sampling and pre-monitoring,and then the Neyman distribution method was used to determine the sample distribution. On this basis,a layout scheme of monitoring points for soil and water conservation of power transmission line project was put forward.