填砾厚度与单井出水量及井水泥沙含量关系探讨

STUDY ON THE RELATION AMONG GRAVEL-FILL THICKNESS, WATER DISCHARGE OF SPECIFIC WELL AND LOADING SOLID CONTENT

山东黄泛平原区浅层地下水丰富，但由于含水层岩性以粉砂为主，单井出水量小，井水含泥沙量高，井易淤易堵，因而影响该层地下水的开发利用。通过对填砾厚度与单井出水量及井水泥沙含量试验资料的分析，得出适宜细颗粒地层分布区成井的最佳填砾厚度为１５０～２００ｍｍ。

The aquifer shallow water in Huanghe flood plain are majorly composed of silt. Thus the water discharge of specific well is little, the loading solid content in it high, and the wells easy to be accumulated and clogged, which badly effects their utilization. According to the test of the relation among gravel-fill thickness, water discharge of a specific well and loading solid content, the suitable thickness of the gravel-fill has been determined as 150～200mm, and a key problem to utilize shallow water in the area solved.