Method and Apparatus for measureing shear strength of slop topsoil
Outline
A new portable soil penetration test, Soil Strength Probe(SSP), was developed
for measuring the depth and strength of slope topsoil.
SSP has two types of measuring method. First method is penetration test
using normal cone.Though the weight of SSP is only 4kg, penetration depth
is over 5m if N value is less than 10-15. Second Method is shear test.
Using vane cone, in-situ cohension and friction angle are independently
measured.
Air tracer test. Method for investigation of rockmass crack using air tracer
like smoke.
The tracer pours into crack, and outflow of the tracer is measured at
another place to confirm the continuous of cracks and looseness zone.
Inventor
Tomoo OHTANI
Yasuhito SASAKI
Filing Date
May 30 2003
Geology ReseachTeam,Geology and Geotechnical Engineering Research Group
Public Works Research Institute
1-6, Minamihara, Tsukuba, Ibaraki, 305-8516 Japan TEL: +81-29-879-6769 FAX: +81-29-879-6734
Copyright (C) 2005-2016 Public Works Research Institute
