<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Society

          Test results in success for coal mine shelter

          By Lan Tian and Sun Ruisheng (China Daily)
          Updated: 2011-04-12 08:09
          Large Medium Small

          Taiyuan - A team of 80 coal miners and support staff members finished a 48-hour stay inside an underground refuge chamber in a coal mine in North China's Shanxi province on Sunday, marking success for the country's first manned test of a refuge chamber for underground coal mines.

          Test results in success for coal mine shelter
          A team of 80 coal miners and support staff members stay inside an underground refuge chamber in a coal mine in North China's Shanxi province to test its safety on Sunday. [Zhang Yun / China News Service]

          "The chamber is a bit crowded, but my co-workers and I didn't feel much discomfort during our two-day stay," Shen Haisheng, a 29-year-old miner who participated in the test, told China Daily.

          "The use of refuge shelters is really reassuring to me and my families, since it makes us miners better able to survive a mine accident," he said.

          Related readings:
          Test results in success for coal mine shelter Shanxi coal mine rescue chamber tested
          Test results in success for coal mine shelter 11 killed in NE China coal mine blast
          Test results in success for coal mine shelter 4 officials sacked as 6 dead in China coal mine blast
          Test results in success for coal mine shelter Coal mine deaths fall 'but still remain high'

          The refuge chamber was tested in the Changcun Coalmine, which belongs to the State-owned Lu'an Group in Changzhi city, Shanxi province, and is the most advanced coal mine refuge in China, said Jin Longzhe, professor from the civil and environment engineering school of the University of Science and Technology Beijing.

          "The test turned out to be very successful, which provided us with many useful data for further improvement," said Jin, who, under a national program of technical research, has played a lead role since 2006 in developing the chamber and related refuge structures.

          The test chamber is equipped with devices that provide oxygen, electricity and telecommunications and has a permanent borehole that allows air, fresh water and food to be lowered down from above ground. The shelter, which measures 39 meters by 3.5 meters by 3.05 meters, is large enough to keep up to 100 miners alive for 96 hours after a coal mine disaster, he said.

          Test results in success for coal mine shelter

          Built in May 2010, the refuge system was introduced as a test project at the Changcun Coalmine, which is the first mine in China to have such a structure.

          Besides the chamber, the mine is also equipped with 16 underground escape capsules. Each capsule can be moved by a track to the chamber and bears a supply of oxygen, an air purifier and an air conditioner.

          It can keep up to 12 miners alive for 96 hours, said Zheng Xiangju, deputy director of the mine's chief engineer office.

          To develop and install the underground refuge shelters, the Lu'an Group spent about 8 million yuan ($1.22 million) during its five years of cooperation on the project with the University of Science and Technology Beijing, he said.

          "We went through lots of problems because (China) offered no precedent to follow," he said. "The country did not have a national standard for building such shelters. But the most difficult phase has passed."

          Emergency shelters for coal mines have attracted much public attention since October 2010, when 33 Chilean miners were pulled to safety after being trapped underground for 69 days. An underground emergency shelter was believed to have been essential in saving their lives.

          By 2015, all mines in China are to undergo safety improvements meant to make it easier to monitor for dangerous conditions and respond to emergencies, Zhao Tiechui, head of the State Administration of Coal Mine Safety, said in May 2010.

          Safety chambers will help ensure workers caught in a disaster have shelter, oxygen and clean water, he said.

          At the encouragement of the country's coal mine safety watchdog, tests of emergency shelters began to be conducted in five State-owned coal mines in the coal-rich Shanxi province in 2010.

          In January, the central government released a national standard to govern the construction and management of the shelters and issued a mandatory provision requiring all mines to contain underground escape capsules and other safety improvements by 2013.

          Chinese mines are prone to being damaged by gas blasts, flooding and other disasters, largely because 95 percent of them are underground, Xinhua reported.

          The emergency shelters are to serve as the last safeguard for miners in all kinds of mine disasters and have been widely used in the United States, Canada, South Africa and other countries, according to professor Jin.

          "The widespread use of the refuges will greatly improve the safety of China's coal mines," he said.

          主站蜘蛛池模板: 亚洲人成77777在线观| 亚洲av无码精品蜜桃| 五月婷婷久久中文字幕| 色窝窝免费播放视频在线| 久9re热视频这里只有精品免费| 久久91综合国产91久久精品| 国产精品视频一区不卡| 久久精品夜夜夜夜夜久久| 亚洲一区二区av观看| 无码一区二区波多野结衣播放搜索| 在线不卡免费视频| 一区二区三区久久精品国产| 三上悠亚精品一区二区久久| 国产无码高清视频不卡| 太深太粗太爽太猛了视频| 最新系列国产专区|亚洲国产| 亚洲精品一区二区三区色| 久久中精品中文字幕入口| 国产成人精品一区二区三区免费 | 亚洲精品乱码在线观看| 一本大道久久香蕉成人网| 中文字幕在线亚洲日韩6页| 亚洲二区中文字幕在线| 亚洲精品成人片在线观看精品字幕 | 日本精品一区二区不卡| 日韩视频一区二区三区视频| 99精品国产在热久久无| 国产精品乱码久久久久久小说| 无码人妻精品一区二区三区蜜桃| 丁香五月婷激情综合第九色| 亚洲第一福利视频导航| 亚洲最大成人av免费看| japanese熟女熟妇| 国产乱老熟女乱老熟女视频 | 日韩精品无码免费专区网站| 成人无码潮喷在线观看| 国产农村妇女一区二区三区| 在线a级毛片无码免费真人| 日韩欧美偷拍高跟鞋精品一区| 国产91成人亚洲综合在线| 蜜芽久久人人超碰爱香蕉|