Failure Analysis of Deep Composite Roof Roadway and Support Optimization of Anchor Cable Parameters

<div>Roof structure survey results (where HRS: histogram of roof strata; AHRS: average histogram of roof strata; Li: blithology; AT: average tickness; DDS: drilling detection screenshot; FS: fine sandstone; SM: sandy mudstone; SI: siltstone; MI: mudstone interlayer; MS: medium sandstone).</div>

Geofluids

fig4

Figure 4

Figure 4: Failure Analysis of Deep Composite Roof Roadway and Support Optimization of Anchor Cable Parameters 