【摘要】 针对厚壁圆筒试件进行9组近30个试样的水力劈裂试验研究。通过对试验成果分析发现,在以往研究水力劈裂问题中,以著名的厚壁圆筒Lame公式为理论基础的分析方法是错误的。提出水力劈裂问题中渗透力作用机制。以弹性力学为基础,通过严密的数学力学理论推导,提出在稳定渗流作用下厚壁圆筒应力分布解析解(应用商业软件对该解析解进行验证),为岩土体的水力劈裂问题深入研究打下较严密的理论基础。针对试验成果,初步探讨厚壁圆筒水力劈裂破坏条件,提出发生水力劈裂破坏的半经验理论判别关系。更多还原

【Abstract】 Nine groups of hydraulic fracturing tests of thirty thick-wall cylinder samples are performed;and the experimental results are analyzed.The analytical methods reported in some studies based on Lame′s formula of the thick-wall cylinder are incorrect.Infiltration theory of hydraulic fracturing is presented.Based on elasticity mechanics and mathematics,an analytic distribution result of thick-wall cylinder under stable infiltration is put forward and it is verified by commercial software.A rigorous theory foundation is established for the research of hydraulic fracturing of rock masses.Failure condition of thick-wall cylinder on hydraulic fracturing is discussed.And a semi-empirical formulation on critical stress of hydraulic fracturing is presented.更多还原