摘要
假定岩石与混凝土水力劈裂过程的裂缝形态为椭圆形,根据自然营造力作用下产生水力劈裂的边界条件,从流体质量守恒和动量守恒定律出发,采用控制体积法推导出水力劈裂裂缝流体运动质量守恒定律的表达式及缝内水压分布的微分方程,并得到在裂缝扩展稳定状态任意时刻缝内压力的计算式。从定性和定量两个方面与已有的试验结果比较,论证了本文计算公式是正确的。
On the assumption that the fracture in rock and concrete is in half-ellipse shape the differential equation describing the internal water pressure distribution in rock and concrete fractures formed by hydraulic fracturing is established based on the law of mass conservation and momentum principle. The finite control volume approach is adopted and the formula for calculating the internal pressure at arbitrary moment in the process of fracturing is deduced. The validity of the formula is verified by experimental result.
出处
《水利学报》
EI
CSCD
北大核心
2005年第6期656-661,共6页
Journal of Hydraulic Engineering
基金
国家自然科学基金资助项目 (5 0 3 790 0 5 )
关键词
水力劈裂
缝内水压
理论计算式
岩石
混凝土
hydraulic fracturing
internal water pressure distribution
formula
rock and concrete
