Method of measuring changes in the area surrounding a mining cavity

A method of measuring changes in the area surrounding a mining cavity in which a rod-like anchor is rigidly embedded in a bore hole of such cavity. The changes in the strata are measured in several planes distributed over the length of the anchor by sensors, which are mounted on the outside of the a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SCHUERMANN, FRITZ, MULLER, HERBERT, BODDICKER, HORST, HEUSINGER, PETER-PAUL
Format:	Patent
Sprache:	eng
Schlagworte:	DETECTING MASSES OR OBJECTS EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS HYDRAULIC ENGINEERING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS SOIL SHIFTING TESTING UNDERGROUND OR UNDERWATER STRUCTURES
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