土地整治工程中水平梯田田坎断面优化

为了研究土地整治工程中水平梯田田坎断面设计方案优化问题，分析了不同田坎高度和外坡角度对田坎占地率和挖填方工程量的影响，在此基础上，以田坎占地率和挖填方工程量作为评价指标，对田坎断面设计方案的综合评价进行了初步探讨。研究表明，田坎越高，外坡越陡时，田坎占地率越小，即有效耕作面积越大；田坎越低，外坡越缓时，挖填方工程量越小，即工程成本越小。表明田坎占地率与挖填方工程量具有相互对立性。因此，在土地整治工程水平梯田田坎断面设计过程中，应因地制宜，合理确定各评价指标权重，以确定最优田坎断面设计方案。 

Optimization of Horizontal Terrace Ridge Section in Land Consolidation Engineering

In order to study optimization of horizontal terrace ridge section design in land consolidation engineering，influence of different ridge heights and outer slope angles on the land occupation ratio of ridge and cut-fill volumes was analyzed.On this basis，taking land occupation ratio of ridge and cut-fill volumes as evaluation indexes，comprehensive evaluation of ridge section design scheme was preliminary discussed.Results showed that when ridge was higher and outer slope was steeper，land occupation ratio of ridge was smaller，effective tillage area was larger.When ridge was lower and outer slope was slower，cut-fill volumes was smaller，project cost was smaller.Land occupation ratio of ridge and cut-fill volumes was mutually exclusive.Therefore，in the process of horizontal terrace ridge section design in land consolidation engineering，weights of each evaluation index should be determined rationally according to local conditions，so as to determine optimal design scheme of ridge section design.