Table 1. Specific questions
Questions to Answer |
Features to Assess |
Parameters to Monitor |
Possible Control and Remedial Measures |
What are the possible stress and strain status to which the dam and its foundation will be subjected during construction and reservoir filling? |
– Foundation, Abutments, RCC |
Stresses, Strains, Displacement, Water Pressure, Temperature, Jointing |
Visual inspection to evaluate possible damages. (1)(2), Increase monitoring frequency. (1)(2), Reduce time of placement between RCC layers. (1), Protect RCC upper layer against rapid cooling. (1), Grouting or other treatment of major fissures or cracks. (2), Perform new analysis for the specific problem area to account for actual conditions.(1)(2) |
What is the thermal effect caused by the increment and heat dissipation generated during the hydrating process of the RCC? |
– RCC; Foundation dam and tower crane |
Induced deformations, Temperature, Jointing, Seepage |
Visual inspection to evaluate possible damages. (1)(2), Increase monitoring frequency. (1)(2), Reduce time of placement between RCC layers. (1), Protect RCC upper layer against rapid cooling. (1), Grouting or other treatment of major fissures or cracks. (2), Increase frequency of water seepage and pressure readings. (2), Perform water quality tests. (2) |
What is the RCC temperature variation during the reservoir filling and at a long term? |
RCC, Foundation, Abutments |
Ambient Temperature, Placing, Temperature, Adiabatic, Temperature, Jointing – |
Increase monitoring frequency. (1)(2), Increase frequency of water seepage and pressure readings. (2), Grouting or other treatment of major fissures or cracks. (2), Perform new analysis for the specific problem area to account for actual conditions.(1)(2) |
What is the structure behaviour during the reservoir filling? |
Foundation, Abutments, RCC-rock contact |
All parameters |
All of the above. |
Where is the seepage occurring?. What is the magnitude of the seepage? |
Foundation, Abutments, Joints, Upstream face |
Temperature, Jointing, Leakage, Seepage, Water Pressure |
Visual inspection. (1)(2), Increase frequency of water seepage and pressure readings. (2), Perform water quality tests. (2), Install additional instrumentation. (1)(2), Grouting or other treatment of major fissures or cracks. (2), Reduce water level in reservoir. (2) |
What is the structure behaviour at long term? |
– All features |
– All parameters |
All of the above. |
(1) During Construction. (2) During Filling and operation of the project.