{"id":109819,"date":"2025-07-03T10:52:54","date_gmt":"2025-07-03T08:52:54","guid":{"rendered":"https:\/\/geosurveys.it\/?page_id=109819"},"modified":"2026-02-27T10:11:42","modified_gmt":"2026-02-27T09:11:42","slug":"autres-methodes-electriques","status":"publish","type":"page","link":"https:\/\/geosurveys.it\/fr\/autres-methodes-electriques\/","title":{"rendered":"Autres m\u00e9thodes \u00e9lectriques"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row row_height_percent=\u00a0\u00bb60&Prime; back_color=\u00a0\u00bbcolor-172302&Prime; back_image=\u00a0\u00bb105186&Prime; kburns=\u00a0\u00bbyes\u00a0\u00bb overlay_alpha=\u00a0\u00bb40&Prime; gutter_size=\u00a0\u00bb4&Prime; column_width_percent=\u00a0\u00bb100&Prime; shift_y=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; content_parallax=\u00a0\u00bb0&Prime; uncode_shortcode_id=\u00a0\u00bb159769&Prime; back_color_type=\u00a0\u00bbuncode-palette\u00a0\u00bb][vc_column column_width_percent=\u00a0\u00bb100&Prime; position_horizontal=\u00a0\u00bbleft\u00a0\u00bb position_vertical=\u00a0\u00bbmiddle\u00a0\u00bb gutter_size=\u00a0\u00bb3&Prime; style=\u00a0\u00bbdark\u00a0\u00bb overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; width=\u00a0\u00bb1\/1&Prime; uncode_shortcode_id=\u00a0\u00bb704479&Prime;][vc_row_inner][vc_column_inner column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; style=\u00a0\u00bbdark\u00a0\u00bb overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; width=\u00a0\u00bb1\/1&Prime; uncode_shortcode_id=\u00a0\u00bb103021&Prime;][vc_custom_heading heading_semantic=\u00a0\u00bbh1&Prime; text_font=\u00a0\u00bbfont-377884&Prime; text_size=\u00a0\u00bbh1&Prime; text_weight=\u00a0\u00bb500&Prime; css_animation=\u00a0\u00bbcurtain-words\u00a0\u00bb uncode_shortcode_id=\u00a0\u00bb205572&Prime;]Autres m\u00e9thodes \u00e9lectriques[\/vc_custom_heading][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row row_height_percent=\u00a0\u00bb0&Prime; override_padding=\u00a0\u00bbyes\u00a0\u00bb h_padding=\u00a0\u00bb2&Prime; top_padding=\u00a0\u00bb2&Prime; bottom_padding=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; gutter_size=\u00a0\u00bb4&Prime; column_width_percent=\u00a0\u00bb100&Prime; shift_y=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; content_parallax=\u00a0\u00bb0&Prime; uncode_shortcode_id=\u00a0\u00bb179310&Prime;][vc_column column_width_percent=\u00a0\u00bb100&Prime; position_horizontal=\u00a0\u00bbleft\u00a0\u00bb position_vertical=\u00a0\u00bbmiddle\u00a0\u00bb gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; width=\u00a0\u00bb1\/1&Prime; uncode_shortcode_id=\u00a0\u00bb953999&Prime;][vc_row_inner][vc_column_inner column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb animation_delay=\u00a0\u00bb300&Prime; toggle=\u00a0\u00bbyes\u00a0\u00bb max_height=\u00a0\u00bb450&Prime; max_height_mobile=\u00a0\u00bb60vh\u00a0\u00bb closed_txt=\u00a0\u00bbLire la suite\u00a0\u00bb btn_margin=\u00a0\u00bbsm\u00a0\u00bb open_txt=\u00a0\u00bbChiudi\u00a0\u00bb btn_margin_open=\u00a0\u00bbsm\u00a0\u00bb btn_align=\u00a0\u00bbleft\u00a0\u00bb width=\u00a0\u00bb1\/3&Prime; uncode_shortcode_id=\u00a0\u00bb113692&Prime;][vc_single_image media=\u00a0\u00bb108805&Prime; media_width_percent=\u00a0\u00bb100&Prime; uncode_shortcode_id=\u00a0\u00bb206662&Prime;][vc_custom_heading heading_semantic=\u00a0\u00bbh3&Prime; text_size=\u00a0\u00bb\u00a0\u00bb uncode_shortcode_id=\u00a0\u00bb116657&Prime;]Sondage \u00e9lectrique vertical (SEV)[\/vc_custom_heading][vc_column_text uncode_shortcode_id=\u00a0\u00bb170582&Prime;]La m\u00e9thode des sondages \u00e9lectriques verticaux (SEV) est une technique permettant d\u2019\u00e9tudier la variation de la r\u00e9sistivit\u00e9 en fonction de la profondeur. Cette m\u00e9thode consiste \u00e0 effectuer une s\u00e9rie de mesures de r\u00e9sistivit\u00e9 en augmentant progressivement les distances entre les \u00e9lectrodes de courant (A-B) et les \u00e9lectrodes de potentiel (M-N), selon un dispositif quadripolaire de diff\u00e9rents types. Le courant est inject\u00e9 dans le sol \u00e0 travers les deux \u00e9lectrodes externes A et B ; la diff\u00e9rence de potentiel g\u00e9n\u00e9r\u00e9e dans le sous-sol par le passage du courant entre A et B est mesur\u00e9e par les deux \u00e9lectrodes centrales M et N. \u00c0 partir des mesures de diff\u00e9rence de potentiel (ddp) et de l\u2019intensit\u00e9 du courant (I), on calcule la r\u00e9sistivit\u00e9 apparente (R) du sol. En augmentant la distance entre les \u00e9lectrodes A-B et M-N, il est possible d\u2019\u00e9tendre les mesures \u00e0 des couches de plus en plus profondes. En reportant les valeurs de r\u00e9sistivit\u00e9 apparente sur un diagramme bilogarithmique, on obtient les courbes de r\u00e9sistivit\u00e9 apparente \u00e0 partir desquelles, \u00e0 l\u2019aide d\u2019un mod\u00e8le math\u00e9matique, il est possible de d\u00e9terminer la r\u00e9sistivit\u00e9 r\u00e9elle et l\u2019\u00e9paisseur des diff\u00e9rentes couches de r\u00e9sistivit\u00e9[\/vc_column_text][\/vc_column_inner][vc_column_inner column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb animation_delay=\u00a0\u00bb600&Prime; toggle=\u00a0\u00bbyes\u00a0\u00bb max_height=\u00a0\u00bb450&Prime; max_height_mobile=\u00a0\u00bb60vh\u00a0\u00bb closed_txt=\u00a0\u00bbLire la suite\u00a0\u00bb btn_margin=\u00a0\u00bbsm\u00a0\u00bb open_txt=\u00a0\u00bbChiudi\u00a0\u00bb btn_align=\u00a0\u00bbleft\u00a0\u00bb width=\u00a0\u00bb1\/3&Prime; uncode_shortcode_id=\u00a0\u00bb918109&Prime;][vc_single_image media=\u00a0\u00bb108809&Prime; media_width_percent=\u00a0\u00bb100&Prime; uncode_shortcode_id=\u00a0\u00bb915722&Prime;][vc_custom_heading heading_semantic=\u00a0\u00bbh3&Prime; text_size=\u00a0\u00bb\u00a0\u00bb uncode_shortcode_id=\u00a0\u00bb182713&Prime;]Mesures de Potentiel Spontan\u00e9[\/vc_custom_heading][vc_column_text uncode_shortcode_id=\u00a0\u00bb130449&Prime;]La m\u00e9thode du Potentiel Spontan\u00e9 est un type d\u2019investigation g\u00e9o\u00e9lectrique passive qui permet de mesurer, au moyen d\u2019une paire d\u2019\u00e9lectrodes non polarisables, les variations du potentiel \u00e9lectrique dans le sous-sol caus\u00e9es par un champ \u00e9lectrique g\u00e9n\u00e9r\u00e9 par des sources naturelles (hydraulique, thermique et chimique). Les composantes du Potentiel Spontan\u00e9 sont principalement le Potentiel \u00c9lectrocin\u00e9tique, g\u00e9n\u00e9r\u00e9 par l\u2019\u00e9coulement de la nappe phr\u00e9atique, et le Potentiel \u00c9lectrochimique, g\u00e9n\u00e9r\u00e9 par la diff\u00e9rence de concentration en solut\u00e9s \u00e0 la suite de r\u00e9actions d\u2019oxydo-r\u00e9duction entre l\u2019eau et les roches avec lesquelles elle est en contact.[\/vc_column_text][\/vc_column_inner][vc_column_inner column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb animation_delay=\u00a0\u00bb800&Prime; toggle=\u00a0\u00bbyes\u00a0\u00bb max_height=\u00a0\u00bb450&Prime; max_height_mobile=\u00a0\u00bb60vh\u00a0\u00bb closed_txt=\u00a0\u00bbLire la suite\u00a0\u00bb btn_margin=\u00a0\u00bbsm\u00a0\u00bb open_txt=\u00a0\u00bbChiudi\u00a0\u00bb btn_align=\u00a0\u00bbleft\u00a0\u00bb width=\u00a0\u00bb1\/3&Prime; uncode_shortcode_id=\u00a0\u00bb973426&Prime;][vc_single_image media=\u00a0\u00bb108812&Prime; media_width_percent=\u00a0\u00bb100&Prime; uncode_shortcode_id=\u00a0\u00bb194494&Prime;][vc_custom_heading heading_semantic=\u00a0\u00bbh3&Prime; text_size=\u00a0\u00bb\u00a0\u00bb uncode_shortcode_id=\u00a0\u00bb386348&Prime;]M\u00e9thode d\u2019Arc Testing pour la v\u00e9rification de l\u2019int\u00e9grit\u00e9 des membranes en HDPE[\/vc_custom_heading][vc_column_text uncode_shortcode_id=\u00a0\u00bb198849&Prime;]La m\u00e9thode Arc Testing est une technique d\u2019investigation \u00e9lectrique utilis\u00e9e pour localiser les fuites (\u00ab leaks \u00bb) dans les g\u00e9omembranes expos\u00e9es, \u00e0 condition qu\u2019elles soient s\u00e8ches, propres et sans plis excessifs susceptibles de provoquer un \u00e9cran au passage du courant. Elle repose sur le principe de cr\u00e9er une haute tension \u00e0 l\u2019aide d\u2019une sonde plac\u00e9e au-dessus de la membrane isolante et d\u2019un \u00e9lectrode positionn\u00e9e \u00e0 l\u2019ext\u00e9rieur de la zone d\u2019\u00e9tude, permettant de fermer le circuit \u00e9lectrique en cas de trous, perforations, entailles ou d\u00e9fauts dans les soudures.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb animation_delay=\u00a0\u00bb300&Prime; toggle=\u00a0\u00bbyes\u00a0\u00bb max_height=\u00a0\u00bb450&Prime; max_height_mobile=\u00a0\u00bb60vh\u00a0\u00bb closed_txt=\u00a0\u00bbLire la suite\u00a0\u00bb btn_margin=\u00a0\u00bbsm\u00a0\u00bb open_txt=\u00a0\u00bbChiudi\u00a0\u00bb btn_align=\u00a0\u00bbleft\u00a0\u00bb width=\u00a0\u00bb1\/3&Prime; uncode_shortcode_id=\u00a0\u00bb185751&Prime;][vc_single_image media=\u00a0\u00bb108815&Prime; media_width_percent=\u00a0\u00bb100&Prime; uncode_shortcode_id=\u00a0\u00bb189376&Prime;][vc_custom_heading heading_semantic=\u00a0\u00bbh3&Prime; text_size=\u00a0\u00bb\u00a0\u00bb uncode_shortcode_id=\u00a0\u00bb132479&Prime;]Essai OHMEX pour l\u2019int\u00e9grit\u00e9 des g\u00e9omembranes en HDPE[\/vc_custom_heading][vc_column_text uncode_shortcode_id=\u00a0\u00bb960713&Prime;]La m\u00e9thode OHMEX consiste en une investigation \u00e9lectrique pour localiser les \u00ab fuites \u00bb dans les g\u00e9omembranes en HDPE enterr\u00e9es sous une charge hydraulique ou un mat\u00e9riau anthropique. Elle repose sur le principe de cr\u00e9er un flux de courant \u00e9lectrique entre des \u00e9lectrodes plac\u00e9es respectivement en contact avec la g\u00e9omembrane et \u00e0 l\u2019ext\u00e9rieur de la zone \u00e9tudi\u00e9e\u202f; l\u00e0 o\u00f9 il y a des trous, perforations, coupures ou d\u00e9fauts de soudure, le circuit \u00e9lectrique se ferme et des valeurs \u00e9lev\u00e9es de potentiel sont mesur\u00e9es.[\/vc_column_text][\/vc_column_inner][vc_column_inner column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb animation_delay=\u00a0\u00bb600&Prime; width=\u00a0\u00bb1\/3&Prime; uncode_shortcode_id=\u00a0\u00bb177547&Prime;][\/vc_column_inner][vc_column_inner column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb animation_delay=\u00a0\u00bb800&Prime; width=\u00a0\u00bb1\/3&Prime; uncode_shortcode_id=\u00a0\u00bb161151&Prime;][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb1\/1&Prime;][uncode_block id=\u00a0\u00bb108192&Prime;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row row_height_percent=\u00a0\u00bb60&Prime; back_color=\u00a0\u00bbcolor-172302&Prime; back_image=\u00a0\u00bb105186&Prime; kburns=\u00a0\u00bbyes\u00a0\u00bb overlay_alpha=\u00a0\u00bb40&Prime; gutter_size=\u00a0\u00bb4&Prime; column_width_percent=\u00a0\u00bb100&Prime; shift_y=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; content_parallax=\u00a0\u00bb0&Prime; uncode_shortcode_id=\u00a0\u00bb159769&Prime; back_color_type=\u00a0\u00bbuncode-palette\u00a0\u00bb][vc_column column_width_percent=\u00a0\u00bb100&Prime; position_horizontal=\u00a0\u00bbleft\u00a0\u00bb position_vertical=\u00a0\u00bbmiddle\u00a0\u00bb gutter_size=\u00a0\u00bb3&Prime; style=\u00a0\u00bbdark\u00a0\u00bb overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":108814,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-109819","page","type-page","status-publish","has-post-thumbnail","hentry","page_category-metodi-elettrici-fr"],"_links":{"self":[{"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/pages\/109819","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/comments?post=109819"}],"version-history":[{"count":5,"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/pages\/109819\/revisions"}],"predecessor-version":[{"id":109981,"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/pages\/109819\/revisions\/109981"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/media\/108814"}],"wp:attachment":[{"href":"https:\/\/geosurveys.it\/fr\/wp-json\/wp\/v2\/media?parent=109819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}