Research On Well Drilling Technology Of Multi-level Monitoring Well And Sealing Material

As the most effective method of monitoring groundwater, monitoring well plays an important role in monitoring and studying the transformation of groundwater and surface water and analyzing hydro-chemical characteristic of groundwater.On the basic of introducing characteristics of some multi-level wells, the paper expounds emphatically well drilling technology of Continuous Multi-channel Tubing monitoring well, research of sealing material properties, test on sealing effect of multi-level monitoring well and application of Continuous Multi-channel Tubing monitoring well in Heihe River Basin. The main conclusions are as follows:( 1) In contrast with other multi-level monitoring wells, Continuous Multi-channel Tubing monitoring well is more suitable for popularization and application in our country. At the same time, the direction of multi-level monitoring well must be automatic monitoring and intelligent monitoring in the future.(2)On the basic of soil test, studying the performance and application of two kinds of new sealing material provide references for new sealing materials used in multi-level monitoring well.( 3) Perfecting and improving well drilling technology of Continuous Multi-channel Tubing monitoring well provides a good reference for promoting this technology in the field of monitoring groundwater.(4)Adopting simple pumping test and salt conductivity test to examine the effect of sealing water for adjacent sealing layer of multi-level monitoring well laid the foundation for comprehensive promotion and application of multi-level monitoring well.(5)Continuous Multi-channel Tubing monitoring well, which can get water level, salinity, concentration and other hydro-geological information, provides technical support for the rational use of water resources in Heihe River Basin.