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本文简要介绍映秀湾和以礼河(三级)两水电站用径向千斤顶法测定岩石变形特性的试验研究成果.文中探讨了加压段长度对变形范围和深度的影响,指出当加压段长度小于三倍洞径时测定的岩石变形直按式(3)修正;同时研究了岩石变形的叠加性等,从而阐明弹性理论在岩石力学中的实用性.此外,文中还对比了全断面和局部加压(相当于平洞内承压板法)成果之间的关系,指出后者必须计及洞周边的影响,并按式(5)计算.
This article briefly introduces the experimental research results of rock deformation measured by radial jack method in Yingxiu Bay and Lihe (III) Hydropower Station.In the paper, the influence of length of compression zone on the deformation range and depth is discussed, and it is pointed out that when the length of compression zone The deformation of rock determined when the diameter is less than three times of hole diameter is modified according to equation (3), and the superposition of rock deformation is also studied to illustrate the practicability of elastic theory in rock mechanics.In addition, Pressurization (equivalent to flat-plate pressure plate method) the relationship between the results, pointed out that the latter must take into account the impact of the hole around and calculated according to equation (5).