CONCENTRATION FIELDS OF RADIOACTIVE SUBSTANCES
IN THE CASE OF UNDERGROUND BURIAL

A. I. Filippov, P. N. Mikhailov,
D. A. Günter, and D. V. Ivanov

UDC 532.546

Concentration fields appearing in injection of solutions 
of radioactive substances into deep-lying strata have been calculated 
in the zero and first approximations on the basis of solutions constructed 
by asymptotic methods according to the concept of "exact, on the average," 
solutions. The residual term of the expansion has been evaluated; 
the conditions under which the first approximation is highly accurate 
have been found.

Sterlitamak Branch of the Academy of Sciences of Bashkortostan, 
68 Odesskaya Str., Sterlitamak, 153103, Republic of Bashkortostan. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 5, pp. 
912-923, September-October, 2008. Original article submitted 
May 7, 2007; revision submitted March 4, 2008.