The Coupling Support Technology for Y Style Large Span Intersection in Deep Soft Rock Roadway
Because of crossing point’s large span, stress concentration clearly, result in parts of the intersection of poor support, construction and maintenance difficult, especially Y-Intersection is more serious part of deformation and failure. Through situ investigation and theoretical research, summarize the typical failure modes of the deep large Y-intersection, analyze the main reasons for destruction of the crossing point that is both sides of Bovine unconstrained and supported respectively. The new coupling supporting design—bolt-mesh-cable + truss to control the top of crossing point , while the key technology of the double control bolt is used to control the Crossing point.—is proposed.
Jianmin Zeng, Zhengyi Jiang, Taosen Li, Daoguo Yang and Yun-Hae Kim
Z. J. Li et al., "The Coupling Support Technology for Y Style Large Span Intersection in Deep Soft Rock Roadway", Advanced Materials Research, Vols. 199-200, pp. 1773-1776, 2011