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流域坝地建设的新尝试——半沟流域坝地一次成地与逐年淤积成地效益预测分析

作  者:
聂兴山;许国平;马银喜;杨隰平;卓莹
单  位:
山西省隰县世行项目办;山西省水土保持科学研究所
关键词:
黄土残塬沟壑区;淤地坝;一次成地;经济效益
摘  要:
隰县半沟流域在沟道治理中,按照“一次治理,一次成地”的原则,采取综合治理、全面配套、高起点、超常规的治理措施,1995~1996两年一次性投资476.7万元,建成大小淤地坝50座,挖修排洪渠6.5km,推成坝地67hm~2.经济效益预测分析结果表明,一次成地的淤地坝经济效益优于自然淤积而成的坝系工程,净效益可提高39.7%,净效益年值可提高38.6%,效益费用比可提高12.2%,工程投资回收期提早1.35年.
译  名:
New Approach to Construction of Damland in a Watershed
作  者:
Nie Xingshan, Xu Guoping, Ma Yinxi et al. (Shanxi Province Soil and Water Conservation Research Institute, Lishi 033001)
关键词:
gullied hilly loess region silt-arrester one-time-formed field economic benefit
摘  要:
According to the principle of "one-time harnessment, one-time-formed fields", comprehensive harnessment measures have been taken in Bangou watershed of Xixian county. In 1995 and 1996, 4.767 million yuan has been invested to build 50 dams, dig 6. 5km flood diversion channel and form 67hm2 dammed field. Economic analysis shows that compared with naturally formed dam system, one-time-formed dam system can increase net benefit by 39.7 %, increase ratio of benefit to cost by 12.2%, and shorten investment return period by 1.35 years.

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