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由于地质条件、生产条件和岩体结构的复杂性,加之锚喷支护理论的不完善,目前对于巷道锚喷支护的设计计算,尚未有准确的计算公式,国内外学者从不同的理论观点所提供的理论方法,也都十分繁琐复杂,难于指导实际施工。当前,我国现场施工中比较广泛采用工程类比法所推荐的经验数据,本人在长期施工实践中也积累了一些认识,下面介绍一种直接计算锚喷井巷喷层厚度的经验公式,计算简单方便,经我们使用也证明其准确可靠,可供现场技术人员在选择计算喷层厚度时参考。
Because of the geological conditions, production conditions and the complexity of rock mass structure, combined with the imperfect anchor-and-shotcrete support theory, there is no accurate calculation formula for the design and calculation of bolting and shotcreting support at present. Scholars at home and abroad from different theoretical points of view The theoretical methods provided are also very complicated and difficult to guide the actual construction. At present, the construction site in our country more widely used engineering analogy recommended by the empirical data, I have accumulated some knowledge in the long-term construction practice, the following describes a direct calculation of the spray gun shotcrete injection thickness of the empirical formula, the calculation is simple and convenient , We also use it to prove its accuracy and reliability, available for on-site technicians in the choice of jet thickness calculation reference.