China University of Mining and Technology

Xiaoming Shen

Jixiong Zhang

Qiang Zhang

Nan Zhou

Feng Ju

Jiwei Guo

Haiqiang Jiang

In an inclined layered solid-filling mining method in an ultrathick coal layer, tunnels and equipment are arranged according to a solid-filling mining method. An artificial roof for a lower layer is formed by metal meshes and bamboo fences of a first layer a solid-filling mining method. The method is repeated, until the entire ultrathick coal layer is finished. The method is repeated forming additional roofs for subsequent layers.

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Jiangsu, China

Xiaoming Shen