Multi-Port Sampling Systems (MPSS) were developed for observing and determining the vertical distribution of hydraulic parameters in rock and soil. Each observation interval is accessible via a separate PVC standpipe (piezometer). The sealing of the observation intervals is achieved by means of bentonite, opalite and cement slurries. If requested, an additional pump pipe with pumping ports at the observation/test intervals is integrated into the system. In this way, high pumping rates of up to 25 l/min can be achieved.
Special fixing elements hold the piezometer pipes together, permitting the installation of grouting tubes during the backfilling work and ensuring an adequate spacing between the pipes.
1. MPSS 6-fold 2. MPSS 6-fold with 2'' pumping tube 3. MPSS well-head completion 4. Fixing elements