Research Article

Geological Structural Surface Evaluation Model Based on Unascertained Measure

Table 1

Structural plane evaluation classification standard.

Influencing factor indicatorClassification criteria
I grade ()II grade ()III grade ()IV grade ()V grade ()

Uniaxial compressive strength Rc (MPa)>150150~120120~8080~3030~0
Rock quality designation RQD (%)100~9090~8080~6060~3030~0
Rock integrity coefficient Kv0.75~10.55~0.750.35~0.550.15~0.350~0.15
Joint trace length (m)0~0.30.3~0.50.5~0.80.8~1.21.2~1.5
Strike (°)90~7575~6060~4545~3030~0
Dip angle (°)0~3030~4545~6060~7575~90
Fracture roughness coefficient JCR20~1212~88~42~42~0
Joint opening degree (mm)0~0.20.2~1.01.0~2.02.0~5.0>5
Rock moisture content (%)0~2020~3030~4545~6565~100