A Case Study on the Control of Large Deformations in a Roadway Located in the Du’erping Coal Mine in China

Figure 20

Roadway convergence monitoring curves of (a) lines 1–5 and lines 2–4, (b) lines 1–3 and lines 3–5, and (c) lines 2-3 and lines 3-4.

(a)

(b)

(c)