国内外一孔多层监测井建设技术方法与应用

Domestic and Overseas Drilling Technology and Application of One Shaft with Multi-layer Monitoring Well

一孔多层监测井可以在一眼监测井内实现对多个含水层的同时观测。介绍了国内外一孔多层地下水监测井类型,将Westbay一孔多层监测系统和多级完整监测井进行了对比,介绍其结构设计、成井工艺和应用实例,系统地总结和分析了施工建设过程中的技术要点和措施,可为以后一孔多层监测井建设提供参考。此外,还对2种一孔多层监测井优缺点和适用条件进行了客观的分析,对以后一孔多层监测井选型应用提出自己的建议。一孔多层地下水监测井具有节约用地、节省资金、缩短施工周期和便于管理等优点,在以后地下水动态监测设施建设过程中值得推广应用。

One shaft with multi-layer monitoring well, which can monitor several different aquifers in the same bore hole. This paper introduces the type of the one shaft with multi-layer groundwater monitoring well, compares multi-level groundwater monitoring well with westbay system for the fist time, introduces the structural design, drilling technology and application examples and summarizes and analyzes the construction process of the technical main points and measures. This work can offer a reference for the construction of one shaft with multi-layer monitoring well. In addition, this paper makes an objective analysis on the advantages, disadvantages and applicable conditions for two kinds of one shaft with multi-layer monitoring well, and gives advice on monitoring well selection and application. It is pointed out that one shaft with multi-layer monitoring well has the great advantage of economizing on land, saving money, shortening the construction time and more manageable, it is worth applying and recommending in the process of groundwater dynamic monitoring facility construction.