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在干旱风沙区修建水土保持治沟骨干工程,可同时起到拦泥与蓄水的作用,并对改善风沙区生态环境、发展绿洲农业起到促进作用。用沟道内洪水冲积形成的砾砂混合料作为筑坝材料,既可以就地取材,又可以充分发挥土料透水性强的优势达到雨洪转化的目的。通过野外和室内试验获得的数据和资料,应用多种方法对宁夏同心县长沙河流域的上流水骨干工程的坝坡稳定性和渗透稳定性进行了分析,结果表明,干旱风沙区砾砂混合料用于修建水土保持治沟骨干工程能满足坝坡稳定和渗透稳定的要求。
The construction of a water and soil conservation harnessing backbone project in arid and sandstorm area can play the role of blocking mud and reservoiring at the same time and promoting the ecological environment of wind and sand area and the development of oasis agriculture. Gravel-sand mixture formed by flood alluvion in the channel can be used as damming material, which can not only draw on the spot but also give full play to the advantages of strong permeability of the soil material to achieve the purpose of storm flood conversion. Based on the data and data obtained from the field and laboratory experiments, the stability and stability of the dam slope of the upper stream water main works in Changsha County, Ningxin County, Ningxia were analyzed by various methods. The results showed that the gravel sand mixture For the construction of soil and water conservation ditch backbone project to meet the stability and stability of the slope stability requirements.