年输沙量 meaning in English
annual sediment transport
Examples
- The results indicated that with the change of water and sand condition and the altitude of tongguan and the development of the industry and agriculture in recent decades , the water environment of wei river had changed largely , which were shown as follow : annual runoff and seasonal flood decreased sharply ; water stream of large discharge decreased and the range of runoff decreased greatly ; sediment load per year decreased generally , sediment concentration of water increased , and the sand silting up was serious ; water channel swung and shrank , and water regime deteriorated ; frequencies of big floods decreased obviously , and hyper concentrated flood increased obviously ; water levels of the same runoff rose universally , and the frequencies of the floods increased and aggravated ; water pollution was very serious
结果表明，近期随着水沙条件、潼关高程等的变化及工农业的发展，渭河的水环境发生了巨大变化，表现在年水量及汛期水量锐减；大流量级水流出现次数减少，水量减少幅度大；年输沙量总体减少，河水含沙量增大，泥沙淤积严重；河道向摆动型发展，河道萎缩，河势恶化；大洪水发生的次数显著减少，高含沙小洪水明显增多；同流量洪水位普遍抬高，洪灾发生次数增加，洪灾加重；水质污染极为严重。 - Through the statistics and analysis of runoff and amount of sand lost in the downstream of weihe in recent years , it is discovered that in the downstream of weihe the magnitude sand season was ahead of the main flood season relatively within the year ; variation tendency of annual runoff and amount of sand lost was identical basically , and the quantity of water and sand at huaxian gauging station was tailing - off continuously from the 1960 to 2005 ; there was direct relation between the situation of rushing or silting deposits and rainfall at this section of the river : the river depositing in the year which is rich rainfall , the eroding in the poor rainfall
摘要本文通过对近6年渭河下游水沙量数据的统计和分析得出，渭河下游河段年内多沙期较河流主汛期有所提前；年径流量和年输沙量的变化趋势基本一致，而且自60年代至2005年华县站的水沙量持续呈递减趋势；河流的冲淤情况与该河段的降雨量有着直接的关系，当年平均降雨量小的时候河流以淤积为主，当年平均降雨量大的时候河流以冲蚀为主。 - The analyzed results are as follows : the late 1960 ' s cutoff of riverbends increased both the runoff amount and the sediment transport amount of the lower reach of jingjiang river , while the sediment deposition decreased in the lkngting lake area ; after the mid 1980 ' s , both the middle reach of yangtze river main stem and the dongting lake occurred a trend of decreasing annual sediment transport as a result of decreasing sediment releasing from the upper reach of yangtze river ; and in the recent 3 years ( 2003 - 2006 ) , the three gorges reservoir first impoundment additionally reduced the sediment concentration in the middle reach of yangtze river flow with a long time , so a distance would be quite long for suspended sediment recovery , but the distance for bed - material load of suspended sediment recovery would be quite short
分析结果表明： 20世纪60年代下荆江裁弯后，三口（松滋口、太平口、藕池口）分流分沙减少，下荆江径流量和输沙量相应增加，洞庭湖泥沙淤积减少； 80年代中期以后，长江中游干流及洞庭湖出口的年输沙量呈减少趋势，城陵矶至武汉河段河床由淤积转为趋向冲淤平衡；三峡工程初期蓄水运用后，长江中游含沙量沿程恢复距离较长，但床沙质部分恢复距离相对较短。