What question did this study set out to answer?

Investigate the deformation and failure mechanisms of roadway surrounding rock under tectonic stress in deep three-soft coal seams and evaluate an integrated multi-stage supporting strategy.

January 1, 2021Shock and VibrationOpen Access

Roadway Support in Deep “Three‐Soft” Coal Seam: A Case Study in Yili Mining Area, China

View Full Paper

Ask AI

Bookmark

Authors

WLWenxin LiFreie Universität Berlin JLJinxiao LiuAnhui University of Science and Technology LCLianjun ChenQingdao University

Discussion

Member takes

Implication

Geomechanical investigation demonstrates effective deformation control in deep three-soft coal seams using combined yielding and grouting support, highlighting viable stability methods for mining.

Key Points

Investigate the deformation and failure mechanisms of roadway surrounding rock under tectonic stress in deep three-soft coal seams and evaluate an integrated multi-stage supporting strategy.
Conducted in-situ geostress measurements and rock mechanical testing to characterize the stress field and properties of the deep surrounding rock.
Constructed a numerical simulation model to evaluate plastic state evolution, stress distribution, and loose circle formation in the roadway rock mass.
Implemented an underground engineering trial testing a two-stage support system combining primary yielding bolts with shotcrete and secondary prestressed grouting anchor cables with U-shaped steel sheds.
Numerical and field evaluations revealed that high tectonic stress combined with weak rock properties drove substantial plastic zone expansion and roadway failure.
Underground implementation of the coordinated primary and secondary support framework halted large-scale rock mass deformation and maintained long-term roadway stability.

Cite This Study

Li et al. (2021) studied this question.

synapsesocial.com/papers/6a96d0b20f79e4f014b30ca8 https://doi.org/10.1155/2021/8851057

View Full Paper

Ask AI

Bookmark

Implication

Geomechanical investigation demonstrates effective deformation control in deep three-soft coal seams using combined yielding and grouting support, highlighting viable stability methods for mining.

Roadway Support in Deep “Three‐Soft” Coal Seam: A Case Study in Yili Mining Area, China

Discussion

Member takes

Implication

Key Points

Cite This Study

Roadway Support in Deep “Three‐Soft” Coal Seam: A Case Study in Yili Mining Area, China

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider