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鸟山矿井是鹤岗矿业集团新建项目。工程建设过程中,地面设施的兴建、开挖、填筑以及排放弃土、弃石、弃渣的压埋等都不同程度、不同形式地扰动了原地貌形态,损坏了地表土体结构和地面林草植被。分析水土流失总量得出,在预测期水土流失总量4．36万 t(含背景值)中,扰动地表流失量0．29万 t,占新增水土流失总量的6．7%；由于堆放、排放弃土弃渣矸石可能造成的直接流失总量4．07万 t,占新增水土流失总量的93．3%。因此,在运行期把排矸场作为重点防治区。随着工程施工进度的进行,各阶段的水土流失形式、强度发生显著的变化；因此,应根据建设项目的施工安排,分时段分别进行水土流失预测；空间上,对每个施工阶段内,根据建设区域的地貌类型、水土流失特点及主体工程总体布局,将划分不同的水土流失区进行水土流失预测。
Bird Hill mine is Hegang Mining Group new projects. In the process of project construction, the construction of ground facilities, excavation, filling and discharge spoil, abandoned stone, embankment embankment and so on are all in varying degrees, disturbing the original topography in different forms and damaging the surface soil structure and the ground Forest grass vegetation. Analysis of the total amount of soil erosion shows that in the total amount of soil and water loss of 43,600 tons (including the background value) in the forecast period, the disturbance of the surface water loss is 0.29 million tons, accounting for 6.7% of the total newly added water and soil loss; As a result of piling up and discharging spoil, the total amount of direct drainage that may be caused by spoil disposal is 40,700 tons, accounting for 93.3% of the total newly added water and soil erosion. Therefore, in the operation of the drainage gangue as a key control area. As the progress of construction progresses, the forms and intensities of soil and water loss in each stage change significantly. Therefore, soil erosion prediction should be carried out separately according to the construction schedule of construction projects and sub-periods. In space, for each construction stage, Landform types, characteristics of soil and water loss and the overall layout of the main project in the construction area will be divided into different soil and water loss areas for soil erosion prediction.