水力坡降[比降]
A Successful Practice of Lowering Groundwater by Using Indigenous Well in Foundation Pit with Super-Large Area and Relevant Discussion on Hydraulic Slope Curve
超大面积基坑采用土井降水的成功实践及有关水力坡度曲线的探讨
Controlled Drainage can be conducted through controlling drainage time from paddy field, enhancing the elevation of weir in drainage furrow, decreasing hydraulic slope of runoff and sediment-carrying capacity.
通过控制涝水在稻田和排水沟中的滞留时间,增加排水沟口溢流堰高度,降低径流水力坡度和挟沙能力是控制排水的主要手段。
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