上海地质
上海地質
상해지질
2008年
1期
8~12
,共null页
上海 浅层气灾害 诱发原因 防治措施
上海 淺層氣災害 誘髮原因 防治措施
상해 천층기재해 유발원인 방치조시
Shanghai, disasters of the shallow gas, cause,prevent and cure measures
由研究结果认为上海周边海域浅部地层中的浅层气为生物成因气。在上述海域，已发现多处埋藏浅层气，并已在近岸海洋开发工程中诱发了数起地质灾害事故。提出了浅层气灾害诱发的3个原因及2种表现类型，认为防治浅层气地质灾害可从沉积环境、沉积相，沉积地层对含气层进行预测，并采用物探技术调查测区浅层气埋藏深度，进行钻孔预放气是最根本的防治措施。
由研究結果認為上海週邊海域淺部地層中的淺層氣為生物成因氣。在上述海域，已髮現多處埋藏淺層氣，併已在近岸海洋開髮工程中誘髮瞭數起地質災害事故。提齣瞭淺層氣災害誘髮的3箇原因及2種錶現類型，認為防治淺層氣地質災害可從沉積環境、沉積相，沉積地層對含氣層進行預測，併採用物探技術調查測區淺層氣埋藏深度，進行鑽孔預放氣是最根本的防治措施。
유연구결과인위상해주변해역천부지층중적천층기위생물성인기。재상술해역，이발현다처매장천층기，병이재근안해양개발공정중유발료수기지질재해사고。제출료천층기재해유발적3개원인급2충표현류형，인위방치천층기지질재해가종침적배경、침적상，침적지층대함기층진행예측，병채용물탐기술조사측구천층기매장심도，진행찬공예방기시최근본적방치조시。
After studying the cause of the shallow gas, this paper thought that the shallow gas surrounding Shanghai sea area was biogenic origin. In these sea area, the shallow gas buried has been found, and that had in duced several geological disasters and accidents in the inshore marine engineering. This article presents three causes and two types evoked shallow gas disaster. To prevent and cure the geological disasters of the shallow gas, it is essential to forecast strata containing gas from depositional environment, sedimentary facies and sedimentary strata, and to research the depth of shallow gas by means of geophysical and technical surveys measured. Therefore, this pre - gas drilling is the most fundamental prevention and cure measures.
