济宁地区浅层地下水环境监测井成井工艺探讨

Exploration of Well Completion Technology for Monitoring Shallow Groundwater Environment in Ji'ning Area

摘要:

本文以济宁某30m浅层地下水环境监测井为例，详细介绍了“小径勘查、扩孔成井”模式下地下水浅层监测井施工勘查及成井工艺。“小径勘查、扩孔成井”工作模式无需物探测井，精简了工作流程，提高了工作效率，降低了工程造价。但需采取相应措施保障勘查阶段钻孔垂直度，科学选择滤料材料，保障监测井使用功能的稳定、长久；合理选择封隔层材料，可以保障施工顺利实施，快速达到预期封隔效果，提高成井质量。

Abstract:

In order To investigate the background value of groundwater in Ji'ning city, choosing 1095 sampling points, on the basis of fully using existing monitoring wells, a large number of underground water environmental monitoring well construction tasks have been carried out. The construction exploration and well completion technology of the shallow groundwater monitoring well under the "small diameter exploration, hole expansion and well completion" mode have been introduced in detail. The working mode of "small path exploration, borehole expansion and well completion" do not require geophysical logging. It can simplify the workflow, improve work efficiency, and reduce engineering costs. However, corresponding measures need to be taken to ensure the verticality of drilling during the exploration stage. Selecting filter materials scientifically can ensure the stable and longterm use of monitoring well functions. Reasonable selection of sealing layer materials can ensure the smooth implementation of construction, achieve the expected sealing effect quickly, and improve the quality of well completion.