The most critical hydrodynamic parameter for material transportation phenomena by seeping water is the local
pore velocity. Regions with high pore velocity are most likely prone to internal erosion. Up to now, critical
pore velocities for the onset of internal erosion have been determined theoretically by using particle size
distributions and measured hydraulic gradients. The applicability of theoretically calculated pore velocities
is rather limited and in most cases questionable. In order to address this problem GTC developed a temperature
based method - the heat pulse method (HPM). With the HPM it is possible to
determine pore velocities in the range from 10
-7 m/s up to 10
-3 m/s. Thus, allowing the in situ determination
of this important hydrodynamical parameter for the first time.
>> further informationen via download
- Heat-Pulse-Method (TSM4.pdf, 134kb)
