Study on Zonal Cooperative Control Technology of Surrounding Rock of Super Large Section Soft Rock Chamber Group Connected by Deep Vertical Shaft

<div>High strength anchorage bearing structure: (a) spatial arrangement of bolt (cable), (b) high strength anchorage bearing spatial structure, (c) principal and secondary compression stress circles, and (d) distribution of prestress field of bolt (cable).</div>

Advances in Civil Engineering

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Figure 9

Figure 9: Study on Zonal Cooperative Control Technology of Surrounding Rock of Super Large Section Soft Rock Chamber Group Connected by Deep Vertical Shaft 

Figure 9 | Study on Zonal Cooperative Control Technology of Surrounding Rock of Super Large Section Soft Rock Chamber Group Connected by Deep Vertical Shaft 