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V. N. Odintsev
V. N. Odintsev
Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences
Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences

Articles

Blasting, explosives and means of mechanization of their application
  • Date submitted
    2006-09-21
  • Date accepted
    2006-11-01
  • Date published
    2007-03-01

Pre-destruction of rocks as a stage of fracture process under quasi-static and dynamic loading

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The problem of rock pre-fracture under quasi-static and di-namic loading is considered. It is shown that under dynamic loading it is possible to form pre-fracture zones of large extent. The data of ultrasonic measurements after non-destructive explosive loading are presented. Experimental data on changes in the velocities of elastic wave propagation after dynamic loading are presented.

How to cite: Viktorov S.D., Kochanov A.N., Odintsev V.N. Pre-destruction of rocks as a stage of fracture process under quasi-static and dynamic loading // Journal of Mining Institute. 2007. Vol. 171. p. 153-157.
Without section
  • Date submitted
    2000-06-28
  • Date accepted
    2000-07-26
  • Date published
    2001-01-01

Estimation of microcracking in coal during methane desorption

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At present, when a number of industrial regions producing coal are experiencing a shortage of gas fuel, the problem of industrial production of methane at coal deposits is urgent. To solve it, it is necessary to investigate a number of fundamental scientific problems. One of the main tasks is to establish the patterns of decay of the natural system "coal - methane" and the migration of methane to mining wells. According to the views prevailing among many experts, almost all of the methane is in the coal in the absorbed (dissolved) state, and the coal bed is initially gas-tight. Therefore, not in all cases, drilled wells can give methane in the required volume. This is evidenced by field experiments. Some gas production wells produce little methane. Other wells, such as those in the coal fields of the San Juan Basin, have very high gas yields.

How to cite: Odintsev V.N. Estimation of microcracking in coal during methane desorption // Journal of Mining Institute. 2001. Vol. № 1 148. p. 146-150.