METHOD FOR PROTECTION OF UNDERMINED BUILDINGS Russian patent published in 1997 - IPC

Abstract RU 2081250 C1

FIELD: mining, civil engineering. SUBSTANCE: kerfs are produced below the foundation, and wells are inclined to the side of object being guarded. Horizontal projection of well bottom forms triangle. EFFECT: higher efficiency. 2 dwg

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RU 2 081 250 C1

Authors

Martynov Jurij Ivanovich

Dates

1997-06-10—Published

1994-02-14—Filed