FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to mining, is used for assessment of mode of deformation of mountain mass by axis of well. Device contains located in specified sequence of supporting benchmark, allowing expansion unit at least one pair gaging unit - moving frame, additionally the latter allows expansion unit and connected to measuring block, and recorder, connected to measuring blocks by conductor line. Supporting benchmark is connected to measuring block, and measuring blocks to each other by sleeve motionless. Moving frame of specified pair is installed with ability of restricted axial motion on external surface of casing of measuring block and allows transversal pin, located in long slots of casing of measuring block and constantly intercommunicated to mechanical motion transducer point of measuring block. Expansion units of supporting and movable benchmarks include at least three pairs pivotally connected to each other levers. Pairs of these levers by one end are additionally connected to casing of bearing or movable benchmarks accordingly, and by other end are pivotally connected to spring-load and movable in axial direction by the first or the second bearing sleeve correspondingly.
EFFECT: reliability growth of structure, measurement accuracy increasing, providing of reliable contact of expansion units, increasing of axial stability and simplification of mounting/demounting.
7 cl, 9 dwg
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