Control of the Internal and External Staggered Distance of Coal Mining Face to the Water-Conducting Fissures in the Overlying Strata of the Near Coal

<div>Water flowing fractures development characteristics of overburden rock with the different outward dislocation of shallow-buried short-distance coal seams. (a) After the upper seam is mined. (b) External staggered distance of 40 m. (c) External staggered distance of 80 m. (d) External staggered distance of 90 m.</div>

Advances in Civil Engineering

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Figure 6

Figure 6: Control of the Internal and External Staggered Distance of Coal Mining Face to the Water-Conducting Fissures in the Overlying Strata of the Near Coal 

Figure 6 | Control of the Internal and External Staggered Distance of Coal Mining Face to the Water-Conducting Fissures in the Overlying Strata of the Near Coal 