Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference

<div>Numerical simulation model. Taking Pingbao Coal Mine as an example, the initial model of numerical simulation is established. The <i>X</i> direction is perpendicular to the medial axis of the bottom gas extraction roadway, and the <i>Y</i> direction is parallel to the medial axis of the bottom gas extraction roadway.</div>

Advances in Civil Engineering

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Figure 2: Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference 