New formulae to assess soil permeability through laboratory identification and flow coming out of vertical drains

摘要

Mastering a lot of landslides through deep dewatering drainage by one or more lines of drains,being pumped either by siphoning pipes or by electropneumatic pumps,it has appeared to us that water testswere not reliable for different reasons. We suggest here a procedure through laboratory identification tests andnew formulae to assess the permeability,we can wait for,and a new formula to assess the flow which will comeout of a line of vertical drains in a slope.