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: 四虎国产精品永久在线看| 国产真实系列在线| 全黄大全大色全免费大片| 久久五月天婷婷| 九一在线完整视频免费观看| 亚洲精品人成电影网| 亚洲精品福利网站| 免费又黄又爽1000禁片| 四虎8848精品永久在线观看| 国产人成视频在线观看| 国产亚洲精品资源在线26U| 国产ts亚洲人妖| 午夜国产精品久久久久| 亚洲综合视频网| 免费a在线观看| 亚洲精品成人片在线观看精品字幕| 免费v片视频在线观看视频| 免费一级毛片不卡不收费| 午夜精品久久久久久久99| 卡通动漫中文字幕第一区| 免费在线观看毛片| 亚洲欧美视频在线| 亚洲午夜成人片| 九九视频在线观看视频23| 久久精品亚洲一区二区三区浴池| 中文无遮挡h肉视频在线观看| 国产亚洲精品自在久久| 国产亚州精品女人久久久久久| 啊啊啊好爽在线观看| 国产色综合天天综合网| 国产精彩对白综合视频| 国产精品jizz观看| 妞干网手机免费视频| 婷婷色香五月综合激激情| 国产精品成人无码久久久| 国产小视频免费在线观看| 国产乱子伦农村xxxx| 出包王女第四季op| 亚洲精品成人图区| 亚洲专区欧美专区| yellow字幕网在线播放不了|