Research Progress of Stratified Water Stop Technology for Multilayer Aquifer

Abstract

Stratified pumping can obtain accurately hydrogeological parameters, and the effect of stratified water stop determines the success of stratified water pumping. To summarize the research achievements of the stratified water stop, on the basis of literatures published in recent years, with the method of drawing, analysis, we summarize the layered water stop technology research status quo, and point out existing problems and developing trend. Research results show that: “variable diameter and different steps to stop water”, “one hole with the same diameter to stop water” can achieve stratified water stop, of which “variable diameter and different steps to stop water” outside the casing mainly fills with gravel and clay ball, often uses glue plug device to stop water inside the casing, Packer is mainly used in the stop water of “one hole with the same diameter to stop water”, which is the development trend of stratified water stopping technology. The research results provide a reference for project of the stratified water stop.

Keywords

• stratified water stop
• sealing material
• pumping test
• aquifer
• hydrogeology