日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

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: 九九九视频在线观看 | 天天亚洲 | 国产视频网站在线观看 | 国内精品久久久久久久 | 色哟哟入口国产精品 | 男人影院在线观看 | 国产福利免费在线观看 | 亚洲涩网 | 国产女主播喷水视频在线观看 | 丰满的亚洲女人毛茸茸 | 国产成人一区二区 | 国产在线视频不卡 | 日韩中文字幕一区二区 | 国产精品区在线观看 | 午夜久久福利 | 成人精品在线播放 | 伊人精品一区二区三区 | 自拍视频一区二区 | 日韩欧美久久久 | 国产一级二级视频 | 一区二区精品在线观看 | 91精品久久香蕉国产线看观看 | 日日射天天操 | 视频一区亚洲 | 免费看的黄色网址 | 91裸体视频| 69国产视频 | 色午夜视频 | 91成人精品一区在线播放 | 国产色中色 | 91精品一区二区三区四区 | 亚洲欧美色图 | 日韩欧美精品在线 | 国产免费自拍视频 | 国产成人黄色av | 快色在线 | 亚洲少妇视频 | 免费一二区 | 国产精品久久久久久久久久久免费看 | 国产成人精品一区二区三区网站观看 | 国产日韩欧美高清 |