黄河小浪底水利枢纽灌浆与排水工程的钻孔最优方位确定方法

Method to Determine the Preferred Orientation for Grouting and Drainage Engineering of the Xiaolangdi Multipurpose Dam Project

现行灌浆与排水方法中存在的最大问题是没有考虑所处理裂隙岩体结构面的各向异性条件。针对这一问题 ,在黄河小浪底水利枢纽的灌浆与排水工程中 ,通过前期一系列的野外调查、实验、分析及研究工作 ,在充分考虑裂隙等结构面产状分布特点的基础上 ,提出灌浆和排水斜孔方位计算优选新方法 (简称GJMZ法 ) ,GJMZ法已应用于小浪底的 6项工程。实践证明 ,采用计算优选的灌浆和排水斜孔方位施工 。

The method for grouting and drainage exists the main problem that is the anisotropy of structural surface in fissure is not considered.In order to solve the problem the method to determine the preferred orientation(GJMZ method) for grouting and drainage is presented in the Xiaolangdi multipurpose dam project through field investigation,tests and analysis.The said method has been used to the seven projects in Xiaolangdi.It is shown that the engineering quality and economical benefit are greatly improved through the construction by the said method.