新型半刚性网壳锚喷支护技术在软岩巷道中的适用性研究

Research on suitability of mew half-rigidity shell bolting shotcrete support system in soft rock tunnels

通过对钢筋网壳锚喷支护的技术特色、结构特点、支护原理的研究,分析了半刚性网壳支护结构对软岩支护的适应性。并完成了室内整架载荷试验。结合在桃园矿的应用情况,阐述了其支护参数选择和施工工艺,并对其进行现场监测,分析了这种新型支护形式的支护性能。实践证明,空间网壳锚喷支护结构与围岩相互作用的整体性好,具有良好的力学性能与较高的承载能力,是软岩巷道中的一种既经济又安全可靠的支护结构形式。

The technique feature of the reinforced shell structure and its supporting theory are introduced,and its theory is also analyzed.The paper gives a statement of analysis in its adaptability to soft rock supporting.And the lab test of the whole frame is successful.With its application in the Taoyuan mine,its supporting parameters and crafts are also described.In a word,the space shell and shotcrete supporting structure hve very high value and vast development foreground of application.