Zoning Control Technology of Gob-Side Roadway Driving with Small Coal Pillar Facing Mining in a Special Isolated Island Working Face: A Case Study

The gob-side roadway in an isolated island working face is a typical representative of strong mining roadway, which seriously restricts the efficient and safe production underground coal mines. With engineering background main transportation 1513 (MTR 1513) Xinyi Coal Mine, this paper introduces case driving with small coal-pillar facing under alternate wide narrow faces. Through comprehensive research methods, we studied zoning disturbance deformation characteristics stress evolution law mining. Based on disturbance, MTR divided into three zones, are heading zone, influenced stability zone. A collaborative control technology using pressure relief anchoring proposed, differentiated method formed for zones. For first then adopted; idea synchronous coordination anchorage without adopted. Engineering practices show that influence distance 1511 changes from 110 m advanced to 175 delay. At time, surrounding rock effectively controlled, verified rationality division feasibility technology. results can provide reference pillar special face.