【作者】 匡峰；

【导师】 朱岳明；

【作者基本信息】 河海大学 ， 水工结构工程， 2004， 硕士

【摘要】 本文在总结前人研究成果的基础上，针对水利工程中具体的地下厂房渗流场问题，对地下厂房渗流场的有限元分析及防渗排水系统设计做了较详细的研究工作。主要内容包括： (1)地下厂房洞室群渗流问题麻烦在于确定自由面浸润线的位置，本文对目前求解地下洞室群自由面问题的方法进行了全面的研究，并利用目前的最先进的结点虚流量法求解地下洞室群的自由面问题。并以饱和一非饱和渗流理论为基础，推导了考虑降雨入渗的三维饱和一非饱和渗流数学模型，阐述了降雨入渗的数学建模问题，而且对于降雨入渗问题边界条件的处理也取得了成功。 (2)地下厂房洞室群的排水孔排水幕的处理一直是渗控研究的重点，由于排水孔(幕)数量众多，渗控作用大，须尽可能精确模拟，这对网格划分以及计算机的容量都提出极高的技术要求，问题极为复杂。本文在张有天等人所提出的初步排水子结构的基础上，采纳他人提出的理论上严密的改进排水子结构技术，很好地解决了以上不足，使得整体三维模拟排水孔(幕)的实际渗流行为和渗控效果成为现实。 (3)将三维裂隙岩体渗流理论模型引入到地下厂房洞室群的渗流问题，使地下厂房洞室群渗流场问题的研究更加完整，能够更好地服务于实际工程的建设。更多还原

【Abstract】 The author has particularly researched into the prominent problems of finite element analysis of seepage field in underground powerhouse and anti-seepage and draining system design in water conservancy engineering by summarizing the former achievements. The following is included:(1) It is key is to confirm the free surface of seepage fields for the question of underground powerhouse seepage, The author has researched roundly into the actual methods of the free surface question of underground powerhouse. And we solve the free surface problem of underground planthouse by using advanced method of nodal virtual flow rate of an unvaried finite mesh. Based on the saturated-unsaturated seepage theory, the mathematic model under the condition of rain infiltration has been deduced. The problem of mathematic model is primarily solved and the rain infiltration boundaries have been successfully handled.(2) The treat of drainage wells and drainage curtains is a key point of seepage control research. Drainage holes (curtains) must be simulated exactly because there are a large amount of drainage wells (curtains) that are of great effect, which requires high technique demands for mesh partition and capacity of computer. The question is extremely complicated. On based of original drainage substructure brought forward by ZHANG Youtian. The author has solved its shortage by adopting the technique of improved drainage substructure which is very rigorous in theory putted forward by ZHU Yueming. Simulating actual whole 3-D seepage action and effect of seepage control have come true.(3) Seepage model for 3-D fractured rock masses is introduced to seepage problem of underground powerhouse. The research is more intact than before, which serve better construction in practice.更多还原