Failure characteristics and control technology of surrounding rock during roadway passing collapse column
Ce Jia, Chaojun Fan, Sheng Li, Xiaoshuai Liu, Mingkun Luo · 2024
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Description
Ce Jia, Chaojun Fan, Sheng Li, Xiaoshuai Liu, and Mingkun Luo study how rock fails when a mine roadway crosses a collapse column, in a 2024 paper. A collapse column is a caved zone in the rock that weakens the ground around a tunnel. The team modeled the column with a fracture network and a strain-softening rock law. They then mapped stress zones around it to guide support design.
Four zones ring the column, from a shaken inner zone to untouched rock far out. As the roadway nears, the roof fails in tension and side stresses climb. Their support plan grouts and bolts the inner zone and extends mesh support beyond it. After twenty days of digging, the roof and sides held steady in their tests.
Catalog record
| CREATOR | Ce Jia, Chaojun Fan, Sheng Li, Xiaoshuai Liu, Mingkun Luo |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 41 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |