摘要
重点研究南水北调中线工程表面减阻降糙技术措施,以降低长距离输水阻力,提高输水量。通过试验,原混凝土表面糙率为0.014,经过降糙处理后,糙率降至0.009,可明显提高输水量15%以上,同时,提高了混凝土表面强度、抗渗、抗冻、抗冲击(冰撞)、抗藻及抗霉菌等性能,避免引水过程中的二次污染,保障水质卫生安全且全面提升工程品质。通过研究可将减阻降糙处理工程造价控制在15元/m2以下,以南水北调干线中线每年新增15亿m3流量,运营按20年计,至少可带来300亿元收益。
The test proves that the roughness-coefficient value reduced to 0. 009 from original 0. 014 by reducing resistance, increase 15 % total amount of transporting water. In the meantime, the functions such as the strength of concrete surface, the ability of water-proofing, anti-frost, anti-impact （the ice bump）, anti-moss and anti-fungi were improved. The research will reduce engineering cost by 15 Yuan/m^2, to increase the amount of transporting water of the Middle Route Project of the South-North Water Diversion to 1,500 million liter annually, which can bring 30,000 million Yuan income at least.
出处
《南水北调与水利科技》
CAS
CSCD
2007年第2期18-21,共4页
South-to-North Water Transfers and Water Science & Technology
关键词
南水北调
减阻
降糙
研究
South-to-North Water Diversion
reduce resistance
reduce roughness-coefficient value
research
