灌溉对黑方台灌区地面塌陷的影响分析

Influence of the irrigation on the surface subsidence in the Irrigation Heifangtai Area

通过对黑方台灌区土壤粒度、孔隙度、容重、有机质等物理化学性状的分析及对灌溉强度与土壤入渗性能的关系、灌溉对土壤理化性质、钙积作用、土壤凝聚力、田面龟裂程度的影响分析,得出:灌溉方法和灌溉定额是诱发黑方台灌区地面塌陷的主要因素,为此,提出了治理黑方台灌区地面塌陷的几种工程与农艺措施。

By analying the physciochmical properties of soil in Heifangtai Irrigation Area such as soil size, porosity, unit weight, organic matter, etc, and through analyzing the relationship between irrigation intensity and soil permeability, the influence that irrigation has on the physciochemical characters of soil calcium deposition, soil cohesive force, and the degree of surface splitting. A conclusion can b drawn :Irrigation methods and quota are the main factors that bring about the surface subsidence in Heifangtai Irrigation Area. Therefore, we propose some projects and agricultural measures to control the surface subsidence in Heifangtai Irrigation Area.