Interpenetration apparatus for meausurement of underground blast

Details Interpenetration apparatus for meausurement of underground blast Interpenetration apparatus for meausurement of underground blast

1998-01-20

2000-05-16

Williams, Hezron

Measuring and testing

Vibration

Sensing apparatus

738665, 367188, 181122, G01H 1100, G01D 2100

Patent

active

060620854

ABSTRACT:
An interpenetration apparatus for the measurement of a magnitude of a blasting vibration comprises a housing including a fixture and a mover divided into two, symmetrically, in a longitudinal direction, in which the fixture includes a space for receiving a cable and the mover includes at least two grooves perforated to receive sensors, respectively; a head portion for fixing the front end of coupled fixture and mover to prevent the escape of the mover from the fixture; a handle including a fixing rod threadedly coupled to the rear portion of the fixture; a connecting rod connected to the fixing rod and extended in a predetermined length therefrom to insert the interpenetration apparatus into a working hole perforated adjacent to an approach to a tunnel; and a traction tool connected to the rear end of the mover to operate the mover, thereby enabling the housing to be at the nearest position from the blasting place, and sensitively detecting the wave motion of the blasting vibration as well as three dimensional blasting vibration transferred in all directions to the underground by the sensors to establish the accuracy measurement of the magnitudes of the blasting vibrations.

REFERENCES:
patent: 4686653 (1987-08-01), Staron et al.
patent: 4850449 (1989-07-01), Cheung
patent: 4884250 (1989-11-01), Kitzinger et al.

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