首页|Subsidence control method by inversely-inclined slicing and upward mining for ultra-thick steep seams

Subsidence control method by inversely-inclined slicing and upward mining for ultra-thick steep seams

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Ultra-thick steep coal seam mining will inevitably lead to the increase of greater and violent ground sub-sidence and deformation.A subsidence control method by inversely-inclined slicing and upward mining is proposed in this paper.By this method,the sequence of collapse of overlying strata and the direction of propagation of strata movement are changed,the extent of roof-side deformation thereby is lessened,and boundary angle of roof-side subsidence is reduced by 5°-10°.The mechanism of this mining method for control of strata movement has been evidenced by numerical simulation and experiments with similarity materials.A subsidence prediction model based on the variation of mining influence propagation angle can be used to evaluate the surface movement and deformation of the mining method.The application of the method in No.3 Mine in Yaojie mining area has yielded the expected result.

Ultra-thick steep coal seamHorizontal slicingSubsidence control methodInversely-inclined slicing and upwardminingApplication study

Huayang Dai、Peng Li、Nurpeissova Marzhan、Yueguan Yan、Chongliang Yuan、Tursbekov Serik、Junting Guo、Yryszhan Zhakypbek、Konbay Seituly

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School of Geosciences and Surveying Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China

State Key Laboratory of Coal Resource and Safe Mining,China University of Mining and Technology-Beijing,Beijing 100083,China

Satbayev University,Almaty 050013,Kazakhstan

Yaojie Coal and Power Group Company Ltd,Lanzhou 730080,China

Al-Farabi Kazakh National University,Almaty 050040,Kazakhstan

China Energy Investment Corporation,Beijing 100000,China

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National Natural Science Foun-dation of ChinaNational Natural Science Foun-dation of China

515742425097412

2022

矿业科学技术学报(英文版)
中国矿业大学

矿业科学技术学报(英文版)

CSTPCDCSCDSCIEI
影响因子：1.222
ISSN：2095-2686
年,卷(期)：2022.32(1)
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