U形混凝土衬砌渠道刚性连接缺陷渗漏损失评估方法初步研究

发布时间：2018-06-16 03:33

本文选题：裂隙渗流 + 刚性连接　；参考：《水力发电》2017年10期

【摘要】：如何精确评估季冻区U形混凝土衬砌结构刚性连接缺陷裂隙渗漏损失是渠道防渗工程中必须要考虑的重要问题之一。基于裂隙渗流立方体定理和规范中推荐使用的经验公式对缺陷裂隙渗漏量计算,表明利用裂隙渗流公式评价渠道衬砌刚性连接缺陷裂隙渗漏损失是可行的。规范推荐公式的计算过程仅反映单位长度渠段上的平均渗漏情况,不能准确反映出混凝土衬砌渠道渗漏水位置,针对这一关键问题,提出建立坐标系,建立裂隙渗流计算函数,引入渗漏水位置的设想,并给出求解函数时边界条件及参数确定的方法。
[Abstract]:How to accurately evaluate the leakage loss of rigid connection defects of U-shaped concrete lining structure in seasonal freezing area is one of the important problems that must be considered in canal seepage control engineering. Based on the cube theorem of fracture seepage and the empirical formula recommended in the code, it is feasible to evaluate the leakage loss of channel lining rigid connections by using fracture seepage formula. The calculation process of the standard recommended formula only reflects the average leakage on the section of the unit length, and cannot accurately reflect the leakage position of the concrete lining canal. In view of this key problem, the establishment of coordinate system and the establishment of the calculation function of fracture seepage flow are put forward. The assumption of seepage location is introduced, and the method of boundary condition and parameter determination for solving function is given.
【作者单位】：宁夏大学土木与水利工程学院;宁夏大学宁夏节水灌溉与水资源调控工程技术研究中心;
【基金】：国家自然科学基金资助项目(51269023)
【分类号】：TV698.1

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