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Slicing mining technology was one of the primary methods used in early China for extracting thick and extra-thick coal seams (Wang and Zhong in China Science paper Online 3:829–834, 2008). Typically, slicing mining involves dividing nearly horizontal, gently inclined, inclined, and steeply inclined thick coal seams into several layers with inclined planes parallel to the coal seam. Each layer is approximately 2.0–3.0 m thick, and mining proceeds layer by layer. To ensure the safety of mining in lower layers, artificial false roofs are often installed above upper layers to separate the falling gangue from the coal seam below (Wang in Theory and technology of thick coal seam mining[M], Metallurgical industry press, Beijing, 2009). Slicing mining has several advantages. The smaller mining height results in less pronounced ground pressure, making it easier to control the surrounding rock. Additionally, the equipment requirements are lower. However, there are also drawbacks, such as lower coal recovery efficiency due to the smaller mining height, higher economic costs, and poorer economic benefits (Qian et al. in Ground pressure and strata control[M], China University of Mining and Technology Press, Xuzhou, 2021; Meng X R, Wang H P, Liu C H, et al. Selection principles and development status of thick seam mining methods in China[J] Coal Science and Technology, 2009, 37(1): 39–4;). In the 1980s, the rapid development of LTCC technology led to its widespread adoption in thick coal seams (Wang in Journal of Coal Society 48:83–99, 2023). Simultaneously, advancements in hydraulic supports and other mining machinery increased the height of large mining height technology, resulting in a parallel development of LTCC and large mining height technologies. Consequently, the application of slicing mining technology in thick coal seams has significantly decreased in recent years. However, for extra-thick coal seams (20 m or more) and steeply inclined coal seams in western regions, slicing mining techniques (either slicing mining or STCC) are still employed.

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Slicing Mining

  • 章节

  • 发表日期：

    2025年

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  • Jiachen Wang,
  • Weijie Wei

摘要

Slicing mining technology was one of the primary methods used in early China for extracting thick and extra-thick coal seams (Wang and Zhong in China Science paper Online 3:829–834, 2008). Typically, slicing mining involves dividing nearly horizontal, gently inclined, inclined, and steeply inclined thick coal seams into several layers with inclined planes parallel to the coal seam. Each layer is approximately 2.0–3.0 m thick, and mining proceeds layer by layer. To ensure the safety of mining in lower layers, artificial false roofs are often installed above upper layers to separate the falling gangue from the coal seam below (Wang in Theory and technology of thick coal seam mining[M], Metallurgical industry press, Beijing, 2009). Slicing mining has several advantages. The smaller mining height results in less pronounced ground pressure, making it easier to control the surrounding rock. Additionally, the equipment requirements are lower. However, there are also drawbacks, such as lower coal recovery efficiency due to the smaller mining height, higher economic costs, and poorer economic benefits (Qian et al. in Ground pressure and strata control[M], China University of Mining and Technology Press, Xuzhou, 2021; Meng X R, Wang H P, Liu C H, et al. Selection principles and development status of thick seam mining methods in China[J] Coal Science and Technology, 2009, 37(1): 39–4;). In the 1980s, the rapid development of LTCC technology led to its widespread adoption in thick coal seams (Wang in Journal of Coal Society 48:83–99, 2023). Simultaneously, advancements in hydraulic supports and other mining machinery increased the height of large mining height technology, resulting in a parallel development of LTCC and large mining height technologies. Consequently, the application of slicing mining technology in thick coal seams has significantly decreased in recent years. However, for extra-thick coal seams (20 m or more) and steeply inclined coal seams in western regions, slicing mining techniques (either slicing mining or STCC) are still employed.