Assessment of Fractures in Excavation Damaged Zone around Roadways of an Iron Mine Using Optical Televiewer Detecting Method

<div>Rock mass quality classification test. (a) Point load test sample, (b) sample after test, (c) pole contour map of Xiaoxingshan footwall, (d) pole contour map of Daxingshan orebody, and (e) pole contour map of 3<sup>#</sup> mining area hanging wall.</div>

Advances in Civil Engineering

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Figure 3

Figure 3: Assessment of Fractures in Excavation Damaged Zone around Roadways of an Iron Mine Using Optical Televiewer Detecting Method 