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近几年来,田间水利工程配套项目越来越多,如农业综合开发、现代农业项目、小型农田水利建设重点县等工程,都是田间水利工程配套项目。但现浇混凝土渠道经过一段时间的运行,个别渠段存在不同程度的裂缝、错位和变形,且大多发生在1/3~1/2渠深的水面以下处,呈纵向分布。为此,应进行实地勘察和分析研究,找到裂缝的成因及防治办法。1概况范县地处河南省东北部,黄河下游,鲁豫交界处,面积560km2,耕地35.10千hm2,辖4镇8乡,582个行政村,总人口53万人。范县是农业县,县委、县政府高度重视水利工作,加大对水利的投入,不断夯实水利基础产业,连续十八年荣获河南省农田水利基本建设红旗渠精神杯。全县建设1个大型引黄灌区和2
In recent years, field water conservancy projects supporting more and more projects such as comprehensive development of agriculture, modern agriculture projects, key counties and other small farmland water conservancy projects are field water conservancy projects. However, the cast-in-place concrete channels have been operating for a period of time. There are cracks, dislocations and deformations in some drainage channels, and most of them occur vertically below the water surface of 1/3 to 1/2 depth. To this end, the investigation and analysis should be conducted on the ground to find the causes of cracks and control measures. 1 Profile Fan County is located in the northeastern part of Henan Province, the lower reaches of the Yellow River, the junction of Luyu, an area of 560km2, 35.10 hectares of arable land, administer 4 towns and 8 townships, 582 administrative villages, the total population of 530,000 people. Fanxian County is an agricultural county, county government attaches great importance to water conservancy work, increase investment in water conservancy, continue to lay solid foundation for water conservancy, eighteen years won the Henan province farmland water conservancy construction of Hongqiqu Spirit Cup. The county building a large irrigation area and 2