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浮标法流量测验是通过对河流中浮标的定位及随水流运动速度的测量,计算确定通过断面流量的一种测验方法。传统的浮标测验,需要在测验河段上建立平面及高程控制设施,设立已知间距的上、中、下浮标观测断面,设定极坐标交会点并引测极坐标点高程(或平面起点距交会基线,测量准确的基线长度),以此作为浮标起点距定位、浮标流速计算的依据。无断面极坐标浮标流量测量适用于断面设施不健全、或在非固定测验断面利用漂浮物进行洪水流量应急监测的一种方法。这种方法不需要设立上、下浮标断面,仅有浮标中断面或者设立临时浮标中断面进行测量,特别是对于特大洪水或者超标洪水的流量应急监测较为适用。
The buoy method flow test is a test method to determine the flow through the section through the positioning of the buoys in the river and the measurement of the velocity with the flow of water. The traditional buoy test requires the establishment of plane and elevation control facilities on the test river section, establishment of the upper, middle and lower buoy observation sections with known pitches, setting of the polar coordinate intersections and detection of the polar coordinate elevation (or plane start-point distance Intersection baseline, measuring the exact baseline length), as a starting point from the buoy positioning buoy velocity calculation basis. Non-section Polar Coordinate Buoy flow measurement is applicable to a method for emergency monitoring of flooding at unshielded cross-sections or floats on non-fixed cross-sections. This method does not require the establishment of the upper and lower buoy sections, only the buoy section or the establishment of a temporary buoy discontinuities for measurement, especially for large floods or excessive flood flow emergency monitoring more applicable.