一、江南鉄路电力概述在华东中南地区,沼泽湖泊星罗棋布,河流川溪交叉纵横,尤其在目前其运输能力航运占有较大比重,行驶船舶吨位较大,桅杆甚高。加之气候湿润多雨,且多降于春秋,改使洪峰期三五日內水涨至堤顶,若在枯水季节,茫茫大河竟变为小溪。洪峰与干枯水位之差何止三五米。在湘赣境內,气溫变化较剧,晨塞午热,溫度高时达40℃以上,若在冬季恰为零下5度左右,并且河流宽窄相差甚大,窄者百米左右,宽者竞达千米。因此,电力线路往往与之形成各种交叉跨越,所以也就对电力线路提出了各种要求: 1.杆塔有足够高度,保证洪水季节通航安全,供屯可靠。 2.导线有足够的强度,杆塔有合理的型式,良好的受力状态。 3.跨越塔基选取有利地形,即标高较高(减少杆 I. Overview of Electricity in Jiangnan Kushu Road In central-southern China, swamp lakes are dotted with rivers and lakes and criss-cross rivers and streams. In particular, shipping capacity now occupies a large proportion of shipping capacity. In addition, the climate is wet and rainy, and more falls in the Spring and Autumn Periods, so that the flood peaked within 35 days, but in the dry season, the vast river turned into a stream. The difference between flood peak and dry water level more than 35 meters. In Hunan and Jiangxi territory, the temperature changes more drama, early morning lunch afternoon heat, when the temperature is high at 40 ℃ above, if in winter just about minus 5 degrees, and the width of the river vary widely, narrow about 100 meters, km. Therefore, the power lines are often formed with a variety of cross-over, so it also put forward various requirements for power lines: 1. The tower has enough height to ensure safe navigation during the flood season for reliable Tuen. 2. The wire has sufficient strength, the tower has a reasonable type, a good state of stress. 3. Choose a favorable topography across the base of the tower, ie elevation is higher (reduce the pole