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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Bayou Corne sinkhole ： ウィキペディア英語版 Bayou Corne sinkhole The Bayou Corne sinkhole was created from a collapsed underground salt dome cavern operated by Texas Brine Company and owned by Occidental Petroleum. The sinkhole, located in northern Assumption Parish, Louisiana, was discovered on August 3, 2012, and 350 nearby residents were advised to evacuate. Scientists have stated that the evacuation order could last for years. ==Background== Bayous such as Bayou Corne were largely settled by the Acadians in the late 1700s, who were attracted to the locations for its economic potential as an alligator and crawfish nesting site. Beneath much of the state of Louisiana, including these bayous, are salt domes, gigantic deposits left during the formation of the North American continent. These domes vary wildly in scale and depth, some as much as 35,000 feet below the surface and as large as Mount Everest. With such depths and dimensions, these domes are naturally under thousands of pounds per square inch of pressure. The economic value of salt domes has been exploited for centuries. Salt mining has been going on in Louisiana since the Antebellum period, and in the 20th century, the government began using these underground salt caverns as storage reservoirs for crude oil.〔(【引用サイトリンク】url=http://energy.gov/fe/services/petroleum-reserves/strategic-petroleum-reserve )〕 Where there is a juncture of mining, petroleum engineering, and drilling, care must be taken to maintain stability, so as to prevent a disaster as happened at Lake Peigneur. The Napoleonville Dome lies beneath Assumption Parish, and was characterized by 53 distinct caverns, six of which were operated by Texas Brine. One of these, Oxy3, owned by Occidental Petroleum, was more than a mile below the surface. Oxy3 was less than 100 feet from the nearest oil and gas storage-sheath, a distance that, while unsafe, was not illegal. In 2010, Texas Brine applied for a permit to expand Oxy3. Its subsequent pressure tests were unsatisfactory, yet the company felt that the cavern would be able to withstand the pressure regardless. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bayou Corne sinkhole」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.