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An Optimized Destress Blasting Design for Hard Roof During Early Mining Stage: A Case Study

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Abstract

This paper presents an optimized destress blasting design for hard roof control during early mining stage of the mine. Experience of field operation following an innovative borehole and blasting design to solve the problems associated with hard roof is introduced in detail. Only about half of the setup room roof was drilled with blast holes. It was demonstrated that the new design with indented blast holes at setup room overcame the drawbacks of conventional destress blasting including heavy and slow borehole drilling work in hard roof, large amount of usage of explosive, etc., as blast holes were less.

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Acknowledgements

The work was funded by the coal mine. The authors would like to thank the Xiqu Coal Mine for permission to publish this work. Special thanks to Wenxian Zheng, the general engineer at Xiqu Coal Mine for his support during field operation and observation. Other leaders including Tiegang Zhang, Zhongzhen Li, Deliang Liu, etc., are acknowledged with gratitude who were generous in creating operational conditions and providing many helpful services. The authors are also thankful to the anonymous reviewers for their kind suggestions.

Funding

This study was funded by the National Natural Science Foundation of China, General Program Fund (No. 52274092) and Funds for Talents Supported by China Association for Science and Technology (YESS20200211).

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Authors and Affiliations

  1. Taiyuan University of Technology, Taiyuan, China

    Qiaorong Meng, Huixian Wang, Pengfei Wang, Yue Qu, Yaoxiong Zhang, Haiming Zhang & Wei Zhang

  2. Inner Mongolia Zhengchuang Technology Co., Ltd., Ordos, China

    Yue Qu & Wei Zhang

  3. Ordos urban construction investment group, Ordos, China

    Yaoxiong Zhang

  4. Ordos mango technology Co., Ltd., Ordos, China

    Haiming Zhang

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  1. Qiaorong Meng
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  2. Huixian Wang
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  3. Pengfei Wang
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  4. Yue Qu
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  5. Yaoxiong Zhang
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  7. Wei Zhang
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Correspondence to Pengfei Wang.

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Meng, Q., Wang, H., Wang, P. et al. An Optimized Destress Blasting Design for Hard Roof During Early Mining Stage: A Case Study. Geotech Geol Eng 41, 4775–4793 (2023). https://doi.org/10.1007/s10706-023-02546-x

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