{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1061"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1061","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΠΑΡΑΜΕΤΡΟΙ ΠΟΥ ΕΠΗΡΕΑΖΟΥΝ ΤΗΝ ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΤΩΝ ΠΕΤΡΩΜΑΤΩΝ ΜΕ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ","abstract":"IN THIS DISSERTATION THE PARAMETERS AFFECTING BWE DIGGABILITY ARE INVESTIGATED AND A DIGGABILITY CRITERION IS INTRODUCED WHICH INCORPORATES TWO PARAMETERS, THE EFFECTIVE OUTPUT OF THE BUCKET WHEEL EXCAVATOR AND THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS. THE PROPOSED CRITERION IS FORMULATED BY USING THE SIMULATORBWDIG, WHICH SIMULATES THE DIGGING OPERATION OF A STANDARD BUCKET WHEEL EXCAVATOR WITH A CROWDLESS-TYPE BUCKET WHEEL BOOM, EXCAVATING ACCORDING TO THE FULL BLOCK-TERRACE CUT METHOD. IN ORDER TO COMPARE THE PERFORMANCE OF DIFFERENT BWE DESIGNS, A BWE DIGGABILITY INDEX IS, ALSO, PROPOSED WHICH INCORPORATES THE EFFECTIVE OUTPUT OF THE BWE, THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS, AND THE WEAR RATE OF THE CUTTING TOOLS.","abstract_html":"IN THIS DISSERTATION THE PARAMETERS AFFECTING BWE DIGGABILITY ARE INVESTIGATED AND A DIGGABILITY CRITERION IS INTRODUCED WHICH INCORPORATES TWO PARAMETERS, THE EFFECTIVE OUTPUT OF THE BUCKET WHEEL EXCAVATOR AND THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS. THE PROPOSED CRITERION IS FORMULATED BY USING THE SIMULATORBWDIG, WHICH SIMULATES THE DIGGING OPERATION OF A STANDARD BUCKET WHEEL EXCAVATOR WITH A CROWDLESS-TYPE BUCKET WHEEL BOOM, EXCAVATING ACCORDING TO THE FULL BLOCK-TERRACE CUT METHOD. IN ORDER TO COMPARE THE PERFORMANCE OF DIFFERENT BWE DESIGNS, A BWE DIGGABILITY INDEX IS, ALSO, PROPOSED WHICH INCORPORATES THE EFFECTIVE OUTPUT OF THE BWE, THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS, AND THE WEAR RATE OF THE CUTTING TOOLS.","abstract_has_math":false,"creators":["Παναγιώτου, Γεώργιος","Panagiotou, Georgios"],"institution":"Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1989,"date_issued":"1989","date_published":"1989","updated_at":"2026-07-24T02:24:43Z","subjects":["BUCKET WHEEL EXCAVATOR (BLUE)","DIGGABILITY OF ROCKS","EXCAVATION OF ROCKS","OPENCAST LIGNITE MINING","SIMULATION OF ROCK EXCAVATION","ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΠΕΤΡΩΜΑΤΩΝ","Καδοφόρος εκσκαφέας","ΜΗΧΑΝΙΚΗ ΕΞΟΡΥΞΗ ΠΕΤΡΩΜΑΤΩΝ","ΠΡΟΣΟΜΟΙΩΣΗ ΕΞΟΡΥΞΗΣ ΠΕΤΡΩΜΑΤΩΝ","ΥΠΑΙΘΡΙΑ ΕΚΜΕΤΑΛΛΕΥΣΗ ΚΟΙΤΑΣΜΑΤΩΝ ΛΙΓΝΙΤΗ","Engineering and Technology","Environmental Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Περιβαλλοντική Μηχανική"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1061"],"render_values":[{"text":"10.12681/eadd/1061","href":"https://doi.org/10.12681/eadd/1061","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1061","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Παναγιώτου, Γεώργιος","Panagiotou, Georgios"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1989"]},{"key":"dc:publisher","label":"Institution","values":["Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","National Technical University of Athens (NTUA)"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["BUCKET WHEEL EXCAVATOR (BLUE)","DIGGABILITY OF ROCKS","EXCAVATION OF ROCKS","OPENCAST LIGNITE MINING","SIMULATION OF ROCK EXCAVATION","ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΠΕΤΡΩΜΑΤΩΝ","Καδοφόρος εκσκαφέας","ΜΗΧΑΝΙΚΗ ΕΞΟΡΥΞΗ ΠΕΤΡΩΜΑΤΩΝ","ΠΡΟΣΟΜΟΙΩΣΗ ΕΞΟΡΥΞΗΣ ΠΕΤΡΩΜΑΤΩΝ","ΥΠΑΙΘΡΙΑ ΕΚΜΕΤΑΛΛΕΥΣΗ ΚΟΙΤΑΣΜΑΤΩΝ ΛΙΓΝΙΤΗ","Engineering and Technology","Environmental Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Περιβαλλοντική Μηχανική"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1061","http://hdl.handle.net/10442/hedi/1061"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["IN THIS DISSERTATION THE PARAMETERS AFFECTING BWE DIGGABILITY ARE INVESTIGATED AND A DIGGABILITY CRITERION IS INTRODUCED WHICH INCORPORATES TWO PARAMETERS, THE EFFECTIVE OUTPUT OF THE BUCKET WHEEL EXCAVATOR AND THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS. THE PROPOSED CRITERION IS FORMULATED BY USING THE SIMULATORBWDIG, WHICH SIMULATES THE DIGGING OPERATION OF A STANDARD BUCKET WHEEL EXCAVATOR WITH A CROWDLESS-TYPE BUCKET WHEEL BOOM, EXCAVATING ACCORDING TO THE FULL BLOCK-TERRACE CUT METHOD. IN ORDER TO COMPARE THE PERFORMANCE OF DIFFERENT BWE DESIGNS, A BWE DIGGABILITY INDEX IS, ALSO, PROPOSED WHICH INCORPORATES THE EFFECTIVE OUTPUT OF THE BWE, THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS, AND THE WEAR RATE OF THE CUTTING TOOLS.","ΣΤΗΝ ΔΙΔΑΚΤΟΡΙΚΗ ΔΙΑΤΡΙΒΗ ΔΙΕΡΕΥΝΩΝΤΑΙ ΟΙ ΠΑΡΑΜΕΤΡΟΙ ΠΟΥ ΕΠΗΡΕΑΖΟΥΝ ΤΗΝ ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΤΩΝ ΠΕΤΡΩΜΑΤΩΝ ΜΕ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ ΚΑΙ ΠΡΟΤΕΙΝΕΤΑΙ ΕΝΑ ΚΡΙΤΗΡΙΟ ΕΞΟΡΥΞΙΜΟΤΗΤΑΣ, ΤΟ ΟΠΟΙΟ ΕΧΕΙ ΩΣ ΠΑΡΑΜΕΤΡΟΥΣ ΤΗΝ ΕΠΙΤΕΥΞΙΜΗ ΑΠΟΔΟΣΗ ΤΟΥ ΚΑΔΟΦΟΡΟΥ ΕΚΣΚΑΦΕΑ ΚΑΙ ΤΗΝ ΕΙΔΙΚΗ ΚΑΤΑΝΑΛΩΣΗ ΕΝΕΡΓΕΙΑΣ ΕΚΣΚΑΦΗΣ ΤΟΥ ΠΕΤΡΩΜΑΤΟΣ ΑΠΟ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ ΜΕ ΒΡΑΧΙΟΝΑ ΚΑΔΟΤΡΟΧΟΥ ΣΤΑΘΕΡΟΥ ΜΗΚΟΥΣ, ΠΟΥ ΕΞΟΡΥΣΣΕΙ ΜΕ ΤΗΝ ΜΕΘΟΔΟ ΤΩΝΒΑΘΜΙΔΩΝ. ΕΠΙΣΗΣ, ΠΡΟΤΕΙΝΕΤΑΙ ΕΝΑΣ ΔΕΙΚΤΗΣ ΕΞΟΡΥΞΙΜΟΤΗΤΑΣ ΤΩΝ ΠΕΤΡΩΜΑΤΩΝ ΠΟΥ ΕΞΟΡΥΣΣΟΝΤΑΙ ΜΕ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ ΠΟΥ ΛΑΜΒΑΝΕΙ ΥΠΟΨΗ ΤΗΝ ΕΠΙΤΕΥΞΙΜΗ ΑΠΟΔΟΣΗ ΤΟΥ ΚΑΔΟΦΟΡΟΥ ΕΚΣΚΑΦΕΑ, ΤΗΝ ΕΙΔΙΚΗ ΚΑΤΑΝΑΛΩΣΗ ΕΝΕΡΓΕΙΑΣ ΕΚΣΚΑΦΗΣ ΤΟΥ ΠΕΤΡΩΜΑΤΟΣ ΚΑΙΤΗΝ ΦΘΟΡΑ ΤΩΝ ΚΟΠΤΙΚΩΝ ΕΡΓΑΛΙΩΝ ΤΟΥ ΚΑΔΟΤΡΟΧΟΥ."]},{"key":"dc:title","label":"Title","values":["ΠΑΡΑΜΕΤΡΟΙ ΠΟΥ ΕΠΗΡΕΑΖΟΥΝ ΤΗΝ ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΤΩΝ ΠΕΤΡΩΜΑΤΩΝ ΜΕ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ","ASSESSMENT OF BUCKET WHEEL EXCAVATOR DIGGABILITY"]}]}],"canonical_facts":{"dc:creator":["Παναγιώτου, Γεώργιος","Panagiotou, Georgios"],"dc:date":["1989"],"dc:description":["IN THIS DISSERTATION THE PARAMETERS AFFECTING BWE DIGGABILITY ARE INVESTIGATED AND A DIGGABILITY CRITERION IS INTRODUCED WHICH INCORPORATES TWO PARAMETERS, THE EFFECTIVE OUTPUT OF THE BUCKET WHEEL EXCAVATOR AND THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS. THE PROPOSED CRITERION IS FORMULATED BY USING THE SIMULATORBWDIG, WHICH SIMULATES THE DIGGING OPERATION OF A STANDARD BUCKET WHEEL EXCAVATOR WITH A CROWDLESS-TYPE BUCKET WHEEL BOOM, EXCAVATING ACCORDING TO THE FULL BLOCK-TERRACE CUT METHOD. IN ORDER TO COMPARE THE PERFORMANCE OF DIFFERENT BWE DESIGNS, A BWE DIGGABILITY INDEX IS, ALSO, PROPOSED WHICH INCORPORATES THE EFFECTIVE OUTPUT OF THE BWE, THE SPECIFIC DIGGING ENERGY OF THE ROCK MASS, AND THE WEAR RATE OF THE CUTTING TOOLS.","ΣΤΗΝ ΔΙΔΑΚΤΟΡΙΚΗ ΔΙΑΤΡΙΒΗ ΔΙΕΡΕΥΝΩΝΤΑΙ ΟΙ ΠΑΡΑΜΕΤΡΟΙ ΠΟΥ ΕΠΗΡΕΑΖΟΥΝ ΤΗΝ ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΤΩΝ ΠΕΤΡΩΜΑΤΩΝ ΜΕ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ ΚΑΙ ΠΡΟΤΕΙΝΕΤΑΙ ΕΝΑ ΚΡΙΤΗΡΙΟ ΕΞΟΡΥΞΙΜΟΤΗΤΑΣ, ΤΟ ΟΠΟΙΟ ΕΧΕΙ ΩΣ ΠΑΡΑΜΕΤΡΟΥΣ ΤΗΝ ΕΠΙΤΕΥΞΙΜΗ ΑΠΟΔΟΣΗ ΤΟΥ ΚΑΔΟΦΟΡΟΥ ΕΚΣΚΑΦΕΑ ΚΑΙ ΤΗΝ ΕΙΔΙΚΗ ΚΑΤΑΝΑΛΩΣΗ ΕΝΕΡΓΕΙΑΣ ΕΚΣΚΑΦΗΣ ΤΟΥ ΠΕΤΡΩΜΑΤΟΣ ΑΠΟ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ ΜΕ ΒΡΑΧΙΟΝΑ ΚΑΔΟΤΡΟΧΟΥ ΣΤΑΘΕΡΟΥ ΜΗΚΟΥΣ, ΠΟΥ ΕΞΟΡΥΣΣΕΙ ΜΕ ΤΗΝ ΜΕΘΟΔΟ ΤΩΝΒΑΘΜΙΔΩΝ. ΕΠΙΣΗΣ, ΠΡΟΤΕΙΝΕΤΑΙ ΕΝΑΣ ΔΕΙΚΤΗΣ ΕΞΟΡΥΞΙΜΟΤΗΤΑΣ ΤΩΝ ΠΕΤΡΩΜΑΤΩΝ ΠΟΥ ΕΞΟΡΥΣΣΟΝΤΑΙ ΜΕ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ ΠΟΥ ΛΑΜΒΑΝΕΙ ΥΠΟΨΗ ΤΗΝ ΕΠΙΤΕΥΞΙΜΗ ΑΠΟΔΟΣΗ ΤΟΥ ΚΑΔΟΦΟΡΟΥ ΕΚΣΚΑΦΕΑ, ΤΗΝ ΕΙΔΙΚΗ ΚΑΤΑΝΑΛΩΣΗ ΕΝΕΡΓΕΙΑΣ ΕΚΣΚΑΦΗΣ ΤΟΥ ΠΕΤΡΩΜΑΤΟΣ ΚΑΙΤΗΝ ΦΘΟΡΑ ΤΩΝ ΚΟΠΤΙΚΩΝ ΕΡΓΑΛΙΩΝ ΤΟΥ ΚΑΔΟΤΡΟΧΟΥ."],"dc:identifier":["10.12681/eadd/1061","http://hdl.handle.net/10442/hedi/1061"],"dc:language":["gre"],"dc:publisher":["Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","National Technical University of Athens (NTUA)"],"dc:subject":["BUCKET WHEEL EXCAVATOR (BLUE)","DIGGABILITY OF ROCKS","EXCAVATION OF ROCKS","OPENCAST LIGNITE MINING","SIMULATION OF ROCK EXCAVATION","ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΠΕΤΡΩΜΑΤΩΝ","Καδοφόρος εκσκαφέας","ΜΗΧΑΝΙΚΗ ΕΞΟΡΥΞΗ ΠΕΤΡΩΜΑΤΩΝ","ΠΡΟΣΟΜΟΙΩΣΗ ΕΞΟΡΥΞΗΣ ΠΕΤΡΩΜΑΤΩΝ","ΥΠΑΙΘΡΙΑ ΕΚΜΕΤΑΛΛΕΥΣΗ ΚΟΙΤΑΣΜΑΤΩΝ ΛΙΓΝΙΤΗ","Engineering and Technology","Environmental Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Περιβαλλοντική Μηχανική"],"dc:title":["ΠΑΡΑΜΕΤΡΟΙ ΠΟΥ ΕΠΗΡΕΑΖΟΥΝ ΤΗΝ ΕΞΟΡΥΞΙΜΟΤΗΤΑ ΤΩΝ ΠΕΤΡΩΜΑΤΩΝ ΜΕ ΚΑΔΟΦΟΡΟ ΕΚΣΚΑΦΕΑ","ASSESSMENT OF BUCKET WHEEL EXCAVATOR DIGGABILITY"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:43Z"}