Compression Ratio Design and Research on Lower Coal Seams in Solid Backfilling Mining Under Urban Areas


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Аннотация

Large coal resources occur under buildings in the Iron Third District of Tangshan Mine, which not only greatly reduces the service life of the coal mine, but also wastes the coal resources. To ensure the safety of ground buildings and maximize exploitation of the coal resources, solid backfill mining technology is proposed. This paper studies the compression ratio of the coal seam during backfill mining with a global numerical model based on the finite difference software, FLAC3D. The compression ratio of the coal seam was also similarly studied based on theoretical analysis and the local model.

Авторлар туралы

Li Huai-zhan

School of Environment Science and Spatial Informatics; NASG Key Laboratory of land Environment and Disaster Monitoring, China University of Mining and Technology

Email: smfe@mail.ru
ҚХР, Xuzhou

Zha Jian-feng

School of Environment Science and Spatial Informatics; NASG Key Laboratory of land Environment and Disaster Monitoring, China University of Mining and Technology

Email: smfe@mail.ru
ҚХР, Xuzhou

Guo Guang-li

School of Environment Science and Spatial Informatics; NASG Key Laboratory of land Environment and Disaster Monitoring, China University of Mining and Technology

Email: smfe@mail.ru
ҚХР, Xuzhou

Zhao Bin-chen

School of Environment Science and Spatial Informatics; NASG Key Laboratory of land Environment and Disaster Monitoring, China University of Mining and Technology

Email: smfe@mail.ru
ҚХР, Xuzhou

Wang Bing

School of Environment Science and Spatial Informatics; NASG Key Laboratory of land Environment and Disaster Monitoring, China University of Mining and Technology

Email: smfe@mail.ru
ҚХР, Xuzhou

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