论文部分内容阅读
本文根据天然裂隙系统发育规律及其渗透机制 ,将复杂的裂隙系统划分成带状断层、面状裂缝和管状孔洞三大类型 ,在忽略岩块渗透性的前提下 ,建立了由管状线单元、缝状面单元和带状体单元组合而成的三维裂隙网络渗流数值模型 ,为检验模型的合理性 ,在室内利用混凝土试块制成的离散体来模拟三维裂隙网络结构 ,设定不同的边界水位和降雨入渗对裂隙中渗流进行了实验 ,利用数值模型对实验结果进行了模拟 ,初步验证模型是合理而可靠的 .
In this paper, based on the development regularity of natural fracture system and its infiltration mechanism, the complicated fracture system is divided into three types: banded faults, face cracks and tubular holes. Under the premise of ignoring the rock permeability, In order to verify the rationality of the model, a three-dimensional numerical model of fractured network was established by combining the fractured surface elements and the strip-shaped elements. The discrete structure made of concrete blocks was used indoors to simulate the three-dimensional fracture network structure and set different boundaries Water level and rainfall infiltration experiments on the seepage in fractures are carried out. The numerical simulation results of the experimental results show that the model is reasonable and reliable.