China Exclusive: China mines coal under railway tunnel

    Source: Xinhua| 2018-01-18 21:20:49|Editor: Zhou Xin
    Video PlayerClose

    TAIYUAN, Jan. 18 (Xinhua) -- A company in China's coal province of Shanxi has exploited coal under a railway tunnel using a new technology, the first project of its kind in the country.

    From January to September 2017, 736,000 tonnes of coal was successfully excavated from under a 2-km-long cargo railway tunnel for coal transport in Yangquan City.

    "The maximum land subsidence spot of the tunnel was only 81 mm after the exploitation, which did not affect train operations at all," Li Tao, a technical manager with the geological department of Yangquan coal industry group, told Xinhua Wednesday.

    The technology was co-developed by the group and China University of Mining and Technology, and the exploitation was conducted by Pingshang Coal Mine, an affiliated company of the group.

    "Via a hole drilled at the ground surface, concrete was filled into the cover rock, or the rock formation layer above the coal bed, to form a compacted platform to support the above weight so that the ground surface would not fall down during or after the mining," Li said. "We drilled seven holes and set up 43 monitor spots inside and outside the tunnel to monitor the ground sinking status, proving the technology works."

    The technology can also be used for coal mining under buildings and water.

    The group has around 2 billion tonnes of coal under buildings, water and railways, and the technology will help with exploitation.

    A coal field of another affiliated company of the group is home to the households of 70 villages, making coal exploitation hard in the region as the company cannot afford the relocation expenses, according to Wang.

    "Now that we have the technology, we are planning to excavate coal from under two villages this year, without relocating local residents," he said.

    Shanxi is a vital energy base. By the end of 2015, the province had 270.9 billion tonnes of known coal reserves, accounting for 17.3 percent of the country's total.

    TOP STORIES
    EDITOR’S CHOICE
    MOST VIEWED
    EXPLORE XINHUANET
    010020070750000000000000011100001369061081
    主站蜘蛛池模板: 调教扩张尿孔折磨失禁| jjzz在线观看| 欧美日本高清视频在线观看| 国产主播一区二区三区| 91福利视频导航| 性高湖久久久久久久久aaaaa| 亚洲AV无码之日韩精品| 激情五月婷婷久久| 哒哒哒免费视频观看在线www| 国产精品福利尤物youwu| 在免费jizzjizz在线播| 中文字幕一区二区区免| 日韩欧美一区二区三区免费看 | 和阿同居的日子hd中字| 九九视频在线观看视频23| 国语精品91自产拍在线观看二区| 两个人看的视频播放www| 日韩小视频在线| 亚洲国产成人久久综合一区| 男女一区二区三区免费| 国产91久久精品一区二区| 黑色毛衣在线播放| 国产精品成人免费视频网站| videoshd泰国| 成年性香蕉漫画在线观看| 久久精品无码中文字幕| 欧美日韩加勒比一区二区三区| 免费萌白酱国产一区二区| 色噜噜狠狠一区二区三区果冻| 国产无遮挡无码视频免费软件| 99久久免费看国产精品| 小草视频免费观看| 久久久久久久综合狠狠综合| 最新亚洲春色av无码专区| 亚洲欧洲视频在线观看| 狠狠做深爱婷婷久久综合一区| 另类国产女王视频区| 超级乱淫岳最新章节目录| 国产极品视觉盛宴| 18videosex性欧美69| 在公车上被一个接一个|