贵州马岭水利枢纽碾压混凝土双曲拱坝施工放样程序

Loading Procedure for RCC Double-curvature Arch Dam Construction of Maling Hydraulic Complex in Guizhou

贵州马岭水利枢纽为碾压混凝土双曲拱坝,坐落于马岭河水电站开发第九个梯级的V形峡谷中,拱坝最大坝高90m,坝顶宽6m,坝底宽18.5m,厚高比0.206。针对水库对数螺旋双曲拱坝抛物线放样坐标计算的复杂性,根据多个计算式的相互关系,采用CASIOfx-5800计算器,编写了相应的计算程序;该程序能计算任意拱圈高程面上、中、下游任意放样边线点的设计坐标,为双曲拱坝施工放样提供了准确数据,提高了测量工作速度。

Maling Hydraulic Complex in Guizhou is a RCC double-curvature arch dam,which is located in the V-shaped valley of ninth cascade of Maling River Hydropower Station.The maximum dam height is 90m,dam crest width is 6m,dam bottom width is 18.5m and thickness-to-height ratio is 0.206.In view of the complexity of calculation of parabolic lofting coordinates of logarithmic helical double-curvature arch dam in reservoir,according to the interrelationship of several calculation formulas,this paper adopts CASIOfx-5800 calculator to write corresponding calculation program.The program can calculate the design coordinates of arbitrary lofting edge points on any arch ring elevation surface,middle and downstream,provide accurate data for the construction lofting of double-curvature arch dam and improve the measuring speed.