Objectif EVALUATE A METHOD THAT CAN DETECT THE PRESENCE OF DEEP-SEATED CONDUCTIVE ORE-BODIES WHICH RELIES ON INFORMATION COLLECTED DURING A DOWN-HOLE SURVEY USING A V.L.F. RECEIVER. EVALUATE A NEWLY DESIGNED BOREHOLE PROBE.THE PROCEDURE FOR EVALUATING THE NEWLY-DESIGNED BOREHOLE PROBE SHOULD BE: (A) CALIBRATE THE INSTRUMENT IN BOREHOLE TOTALLY DEVOID OF MINERALISATION. (B) TEST THE INSTRUMENT IN BOREHOLES IN WHICH THERE IS A CONSIDERABLE KNOWLEDGE REGARDING MINERALISATION. (C) CARRY OUT TEST (B) IN BOTH DRY AND WATER-FILLED HOLES IN ORDER TO EVALUATE THE EFFECTIVENESS OF THE PRESENT COMMERCIAL VERSION OF THE FIBRE-OPTIC LINK. (D) RE-DESING OR MODIFY PARTS OF THE PROBE IF TESTS (A), (B) OR (C) INDICATE POSSIBLE AREAS OF IMPROVEMENT. (E) COMPARISON OF RESULTS OBTAINED FROM THE PROBE AND FROM ROUTINE LOGGING ACTIVITIES. CONCURRENTLY: (F) RELATE THE V.L.F. RADIOWAVE DECAY WITH DEPTH TO THE ELECTRICAL PROPERTIES OF THE ROCK. (G) USE THE BRINE TANK TO MATCH FIELD RESULTS TO MODELLING CURVES BY MODELLING THE BOREHOLE MINERALISATION. (H) RE-DESING OR MODIFY PARTS OF THE MODELLING TANK, IF NECESSARY, IN ORDER TO IMPROVE MATCHING PROBE WITH FIELD DATA OF KNOWN MINERALISATION. (I) APPLY FIELD DATA TO FILTERING AND INTERPRETATION TECHNIQUES WHICH HITHERTO HAVE ONLY BEEN TESTED ON MODELLING DATA. Programme(s) PRE-RAWMAT 2C - Research and development programme (EEC) in the raw materials sector, 1982-1985 Thème(s) Data not available Appel à propositions Data not available Régime de financement Data not available Coordinateur Camborne School of Mines Contribution de l’UE Aucune donnée Adresse Pool TR15 3SE Redruth Royaume-Uni Voir sur la carte Coût total Aucune donnée
