MONITORING ELEMENTS OF CONSTRUCTION FOR POTABLE WATER TANKS
The monitoring system was installed on the structural elements of potable water tanks due to possible deformations caused in the vicinity by planned mining operations. The complex consists of 16 monolithic tanks built in the 70’s of the 20-th century. Dimensions of the rectangular horizontal projection of the group of tanks are approximately 110 x 97m.
Tanks were designed as independent structures reinforced concrete crates with a square base with a side of 21,05 m. Each of the walls of the tanks is divided into four chambers with a side of length of 10 m. The height from the bottom to the ceiling is from 8.9 m to 9.4 m. The supporting structure is a system of vertical chambers, closed frames of transverse and longitudinal combined with internal and external walls. Capacity of a single tank is 3 200m3, and all of tanks around 50 000m3.
- measurement of the displacement of tanks relative to each other – 20 strings sensors with a measuring range of 50 to 200mm,
- measurement of the temperature at selected points of the structure,
- deformation of the tank walls – 4 sensors with a measuring range of 3 000 mikrodeformation,
- tank tilts – 8 string sensors with a measuring range ± 10 o.