济南历城巨野河冲洪积扇雨洪水储存调蓄研究

Study on Storage Regulation of Rainwater and Flood in Alluvial-diluvial Fan of Juye River in Licheng District in Ji'nan City

摘要:

济南市山前分布着南大沙河、北大沙河、玉符河、巨野河、巴漏河等系列山前冲洪积扇，本文以巨野河冲洪积扇为例，通过物探、钻探、抽水试验、回灌试验所取得的数据，了解济南一系列山前冲洪积扇雨洪水储存调蓄条件，查明了冲洪积扇面积、砂层厚度、储水系数，查明影响储存调蓄能力的影响因素，计算储存调蓄量。结果表明：巨野河冲洪积扇含水砂层颗粒从扇顶的粗砂、卵砾石向扇缘粗砂、中细砂过渡，厚度从扇顶向扇缘逐渐变厚，冲洪积扇具有较大的储存调蓄空间，较强的回灌储水条件，良好的供水条件。研究结果对济南系列山前冲洪积扇在海绵城市建设中用于调节城市弃流的雨洪水资源具有重要的指导意义。

Abstract:

A series of piedmont alluvial proluvial fans, such as Nandasha River, Beidasha River, Yufu River, Juye River and Balou River are distributed in J'inan city. Taking Juye River alluvial proluvial fan as an example, according to datas obtained from geophysical exploration, drilling, pumping test and recharge test, the storage and regulation conditions of a series of piedmont alluvial proluvial fans in Ji'nan city have been analyzed, the area, sand layer thickness and water storage coefficient of alluvial proluvial fan have been identified, the influencing factors affecting the storage regulation capacity have been found, and the storage regulation capacity has been calculated. It is showed that the water bearing sand layer particles of Juye River alluvial diluvial fan has transferred from coarse sand and gravel at the top of the fan to coarse sand and medium fine sand at the edge of the fan, and the thickness has gradually become thick from the top to the edge of the fan. The alluvial diluvial fan has large storage and regulation space, strong recharge and water storage conditions and good water supply conditions. The research results have important guiding significance for Ji'nan series of piedmont alluvial proluvial fans to regulate the rainwater and flood resources of urban abandoned flow in the construction of sponge city.