Measurement of the normal component of compressive wave pressure in a rock with Manganin sensors
Measurement of dynamic pressures in compressed media with manganin wire sensors has become common in the past few years. The increased interest in this method is due to the technological simplicity of measurement and the ease of manufacturing the manganin pickup. The method has been continually improved and put to new applications. In this paper the authors describe an experiment using manganin sensors to measure the normal component of a compressive pressure wave in rocks (marble, schist, and diabase) generated by industrial blasts. Subtle effects not previously identified include: decomposition of the shockwave in the rock and identification of an elastic precursor; features of damping of the normal component of compressive wave pressure as a function of distance from the load application point; and the pattern of destruction of brittle materials. The authors conclude that manganin sensors can be broadly applied in mining for studies of the efficacy of various types of explosives and in investigations of the mechanism of rock destruction.
- Research Organization:
- G.V. Plekhanov Mining Inst., Leningrad
- OSTI ID:
- 5078616
- Journal Information:
- Sov. Min. Sci. (Engl. Transl.); (United States), Vol. 20:3; Other Information: Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 89-92, May-June, 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
BLAST EFFECTS
MEASURING METHODS
HOT-WIRE GAGES
DESIGN
UNDERGROUND MINING
EXPLOSIVE FRACTURING
PRESSURE MEASUREMENT
COMPRESSION
FABRICATION
MANGANIN
NITROGEN COMPOUNDS
ROCK MECHANICS
ROCKS
SHOCK WAVES
TOLUENE
ALKYLATED AROMATICS
ALLOYS
AROMATICS
COMMINUTION
COPPER ALLOYS
COPPER BASE ALLOYS
FRACTURING
HYDROCARBONS
MANGANESE ALLOYS
MEASURING INSTRUMENTS
MECHANICS
MINING
NICKEL ALLOYS
ORGANIC COMPOUNDS
PRESSURE GAGES
012000* - Coal
Lignite
& Peat- Mining
440300 - Miscellaneous Instruments- (-1989)