2024
DOI: 10.21203/rs.3.rs-4338254/v1
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Technique and practice of surrounding rock control for the roadway driven under the goafs of small collieries and heading for adjacent advancing face

Zhijun Niu,
Xufeng Wang,
Cong Wang
et al.

Abstract: Aiming at the problems of complex stress and large deformations in the surrounding rocks of the roadway driven under the goafs of small collieries and heading for adjacent advancing coal face, by numerical modeling and field practice, the failure characteristics of the overlying coal and rocks were investigated, and the stopping and resuming times of the roadway excavation were identified. A zoning-based reinforcement technique was put forward and applied in engineering practice. The results showed that (1) Th… Show more

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