ISSN:
1570-1468
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Conclusions 1. Borehole bench marks I–VI practically work just as the settlement marks of the dam and surface cliff bench marks located near the dam. Consequently, with such a scheme of embedding the bench marks it was not possible to fall outside the zone of formation of settlement, and the given borehole bench marks cannot serve as a reliable, independent reference for determining dam settlements. 2. Observations of their work for 5 years permit the conclusion that such bench marks, even with a rod length up to 150 m, are sufficiently stable per se as height marks and can be used as reference bench marks. In 1986 on the right bank where the stratum of diabases has a thickness of 50–60 m, another cluster of bench marks was embedded to a depth of 140–160 m (the first observations of which were conducted in December 1986) in the hope that with embeddment into the sandstone stratum to 80–100 m it will be possible to penetrate the zone of formation of settlement and to solve the problem of obtaining a stable reference height mark near the structure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01432358
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