Foundation floor mapping is essential for important structures to provide permanent data set for geological interpretations. At Rawatbhata, Rajasthan, two units of 700 MW each Pressurized Heavy Water Reactor (PHWR) type Nuclear Reactors are being constructed adjacent to existing Rajasthan Atomic Power Project (RAPP) units 1 to 6. In order to evaluate the design basis foundation parameters engineering geological mapping on 1:100 scale was carried out for Nuclear Building-7 structures. 1 m x 1 m grids were prepared for mapping of the floors and walls. Based on the field observations and evidences, it was found that the floor area consists of fine to medium grained, compact quartzitic sandstones. The floor region was seen to contain certain iron stained and weathered zone. No evidence of faulting was observed on the surface of the floor areas. However, there were some isolated patches of soft, weathered/altered rock and small fractures in the rocks. Geotechnical assessment of the foundations of RB-7, RAB-7 and ECCS north and south pits was done on the basis of detailed engineering geological mapping, geological drill holes logging data, rock mass permeability values, geophysical profiling and laboratory test results. This permanent foundation record will assist in making better interpretation of post-construction foundation instrumentation data.
Geological Mapping of Foundation Floor for Nuclear Building of Rajasthan Atomic Power Project, Rawatbhata, India
₹100.00
Foundation floor mapping is essential for important structures to provide permanent data set for geological interpretations. At Rawatbhata, Rajasthan, two units of 700 MW each Pressurized Heavy Water Reactor (PHWR) type Nuclear Reactors are being constructed adjacent to existing Rajasthan Atomic Power Project (RAPP) units 1 to 6. In order to evaluate the design basis foundation parameters engineering geological mapping on 1:100 scale was carried out for Nuclear Building-7 structures. 1 m x 1 m grids were prepared for mapping of the floors and walls. Based on the field observations and evidences, it was found that the floor area consists of fine to medium grained, compact quartzitic sandstones. The floor region was seen to contain certain iron stained and weathered zone. No evidence of faulting was observed on the surface of the floor areas. However, there were some isolated patches of soft, weathered/altered rock and small fractures in the rocks. Geotechnical assessment of the foundations of RB-7, RAB-7 and ECCS north and south pits was done on the basis of detailed engineering geological mapping, geological drill holes logging data, rock mass permeability values, geophysical profiling and laboratory test results. This permanent foundation record will assist in making better interpretation of post-construction foundation instrumentation data.
Publication Mode |
Online |
---|---|
Publication Author |
A. K. Naithani, Prasnna Jain, Rabi Bhusan, J. K. Jain, P. C. Nawani |
Publication Language |
English |
Publication Type |
Conference Paper |
Publication Year |
2016 |
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