{"id":1778,"date":"2025-09-12T09:08:25","date_gmt":"2025-09-12T08:08:25","guid":{"rendered":"https:\/\/greengencymru.com\/the-civil-engineering-reality-behind-the-headlines\/"},"modified":"2026-03-06T11:34:56","modified_gmt":"2026-03-06T11:34:56","slug":"the-civil-engineering-reality-behind-the-headlines","status":"publish","type":"post","link":"https:\/\/greengencymru.com\/cy\/the-civil-engineering-reality-behind-the-headlines\/","title":{"rendered":"Ceblau P\u0175er Tanddaearol: Y Realiti Peirianneg Sifil y tu \u00f4l i\u2019r Penawdau"},"content":{"rendered":"

Pan fydd y sgwrs gyhoeddus yn troi at isadeiledd p\u0175er, yn arbennig y ddadl gynyddol o amgylch gosod ceblau o dan y ddaear o\u2019i gymharu \u00e2 pheilonau, mae\u2019n gwneud synnwyr bod llawer o\u2019r ffocws yn mynd ar yr estheteg, y gost, a safbwynt y cyhoedd. Ond o safbwynt peirianneg sifil, mae\u2019r stori\u2019n llawer mwy cymhleth ac mae wedi ei seilio ar yr elfennau realistig ymarferol ar lawr gwlad.<\/strong><\/p>\n

Yn Jones Bros, nid ni sy\u2019n gwneud y penderfyniadau pan fydd raid i brosiect ddewis rhwng tyrrau dros ben neu geblau o dan y ddaear. Mae\u2019r rheiny\u2019n benderfyniadau cynllunio a pholisi yn y pen draw a wneir gan ddatblygwyr a rheoleiddwyr. Fodd bynnag, fel contractwr sydd \u00e2 phrofiad ar draws amrediad eang o brosiectau isadeiledd, rydym yn chwarae r\u00f4l allweddol mewn cynghori ar ymarferoldeb, cyfyngiadau safleoedd, a helpu i lunio atebion sy\u2019n addas i\u2019r tir a hefyd i\u2019r tirlun rheoleiddiol.<\/p>\n

Yr hyn rydym wedi ei ddarganfod yn gyson yw bod gosod ceblau trydan foltedd uchel o dan y tir yn cyflwyno heriau peirianneg llawer mwy nag y mae llawer o bobl yn ei dybio, yn enwedig o\u2019i gymharu \u00e2 gosod peilonau.<\/p>\n

I ddechrau, mae pob safle yn dod \u00e2\u2019i gyfres unigryw ei hun o gyfyngiadau. Ar draws y DU ac yn sicr yma yng Nghymru, rydym wedi gweithio mewn ardaloedd sydd \u00e2 phob math o gyfyngiadau \u2013 o amodau tir anodd a graddiannau serth, i safleoedd archeolegol wedi\u2019u diogelu, gwasanaethau byw a chroesfannau dros briffyrdd, rheilffyrdd a chyrff d\u0175r. Ychwanegwch at hynny yr ystyriaethau defnydd tir, megis a yw\u2019n dir \u00e2r neu\u2019n dir pori a\u2019r goblygiadau o ran draenio ac ansawdd y pridd, ac rydych yn dechrau gweld yn gyflym iawn mor gymhleth y gall hyd yn oed y camau cynllunio cynnar fod.<\/p>\n

Un mater sy\u2019n cael ei anwybyddu yn aml iawn yw maint enfawr y tir sy\u2019n ofynnol. Mae ceblau tanddaearol yn gofyn am goridor gwasanaeth parhaus a llydan. Mae hynny\u2019n golygu adeiladu ffordd gludo, a hynny fel arfer ar hyd y safle cyfan, er mwyn caniat\u00e1u i offer mawr a deunyddiau gael eu cludo a\u2019u gosod. Mae hon yn ymdrech adeiladu dros dro sylweddol ynddi ei hun, ac nid yw\u2019n un sy\u2019n cyd-dynnu\u2019n hawdd \u00e2 defnydd presennol y tir neu ofynion diogelu\u2019r amgylchedd.<\/p>\n

Unwaith y bydd y ffordd gludo yn ei lle, mae\u2019r gwaith cloddio\u2019n cychwyn. Y dull arferol yw cloddio ffos, sydd fel arfer tua 1.5 metr o ddyfnder, cyn gosod deunyddiau gwaelodol, pibellau ar gyfer y ceblau, tywod thermol, ac yna \u00f4l-lenwi\u2019r ffos. Rhaid ailadrodd y broses hon ar draws y safle cyfan. Mewn ardaloedd sensitif neu adeiledig, er enghraifft o dan briffyrdd neu gerllaw asedau Network Rail, mae\u2019n rhaid i ni ddefnyddio drilio cyfeiriadol, sy\u2019n dechneg hynod o arbenigol a llawer mwy drud.<\/p>\n

Yn ogystal \u00e2\u2019r gwaith sifil uniongyrchol, mae\u2019n rhaid i ni hefyd ystyried systemau draenio dros dro, diogelu cyfleustodau sydd yno\u2019n barod, rheoli gwaddodion, a pharchu gofynion llym i ddiogelu\u2019r amgylchedd. Mae pob un o\u2019r mesurau hyn wedi eu seilio ar arolygon ac asesiadau risg a wneir cyn i unrhyw raw daro\u2019r ddaear.<\/p>\n

Yna, mae\u2019n rhaid ystyried y gwaith cynnal a chadw yn y tymor hir. Unwaith y bydd y ceblau wedi eu claddu o dan y ddaear, bydd unrhyw ddiffyg yn llwybr y ceblau yn y dyfodol yn golygu agor y tir hwnnw unwaith eto, a hynny\u2019n sylweddol yn aml iawn. Mae\u2019n rhaid ystyried heriau mynd i mewn at y broblem a\u2019r amser y byddai\u2019n ei gymryd i ddarganfod a thrwsio problemau wrth edrych ar wytnwch cyffredinol y system.<\/p>\n

Er gwaethaf y problemau hyn, ni ddylem ddiystyru gosod ceblau o dan y tir fel opsiwn anaddas bob tro. Mae\u2019n gwneud synnwyr mewn rhai lleoliadau, yn enwedig mewn ardaloedd trefol neu dirweddau sensitif o ran eu golygfeydd. Ond yr hyn y byddwn yn rhybuddio yn ei erbyn yw\u2019r syniad mai dyma\u2019r opsiwn gorau neu symlaf bob tro.<\/p>\n

Fel contractwyr, ein r\u00f4l ni yw darparu pa ateb bynnag a ddewisir. Ond rydym hefyd yn credu y dylid gwneud penderfyniadau gydag ymwybyddiaeth lawn o\u2019r cymhlethdodau peirianneg, costau a goblygiadau tymor hir perthnasol. Yn Jones Bros, rydym yn dod \u00e2\u2019r mewnwelediad ymarferol hwnnw at y bwrdd, nid er mwyn ffafrio un opsiwn dros un arall, ond i sicrhau bod yr un cywir yn cael ei ddewis ar gyfer pob prosiect unigryw.<\/p>\n

Yn y pen draw, daw\u2019r canlyniadau gorau pan fydd yr elfennau technegol realistig yn cael yr un pwysigrwydd \u00e2 sentiment cyhoeddus a gwleidyddol. Oherwydd, bydd darparu system ynni gynaliadwy, wydn a diogel ar gyfer y dyfodol yn gofyn mwy na dim ond bwriadau da. Bydd yn gofyn am yr isadeiledd cywir, wedi ei adeiladu yn y ffordd gywir.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ceblau P\u0175er Tanddaearol: Y Realiti Peirianneg Sifil y tu \u00f4l i\u2019r Penawdau<\/p>\n","protected":false},"author":5,"featured_media":1717,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1778","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-cy"],"acf":[],"yoast_head":"\nCeblau P\u0175er Tanddaearol: Y Realiti Peirianneg Sifil y tu \u00f4l i\u2019r Penawdau - Green GEN Cymru<\/title>\n<meta name=\"description\" content=\"Undergrounding Power Cables: The Civil Engineering Reality Behind the Headlines %\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/greengencymru.com\/cy\/the-civil-engineering-reality-behind-the-headlines\/\" \/>\n<meta property=\"og:locale\" content=\"cy_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ceblau P\u0175er Tanddaearol: Y Realiti Peirianneg Sifil y tu \u00f4l i\u2019r Penawdau - 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