论文部分内容阅读
为将渗漏水控制在主副厂房等洞室外,蒲石河抽水蓄能电站地下厂房采用外围排水及内部排水两套排水体系,但在电站竣工后,地下厂房和周边的排水廊道一直存在渗水现象,部分区域渗水量较大。为此,结合目前的堵排防渗结构,研究了渗漏水的变化特点,并通过环境量同位素检测方法查找渗水来源,分析评价了在现渗流场下洞室围岩的外水压力和变形情况。结果表明,防渗排水结构设计合理,在阻截渗漏水、降低渗透压力上效果明显,厂房洞室在现有渗流场下能安全运行。
In order to control the leakage of water in the main and auxiliary plant and other outdoor caverns, the underground powerhouse of Pushihe Pumped Storage Power Station adopts two drainage systems, namely the external drainage and the internal drainage. However, after the power station is completed, the water leakage exists in the underground powerhouse and the surrounding drainage corridors Phenomenon, part of the larger water seepage. Therefore, combined with the current plugging seepage control structure, the change characteristics of seepage water were studied, and the source of water seepage was found by environmental isotope detection method. The external water pressure and deformation of surrounding rock in the seepage field were analyzed and evaluated Happening. The results show that the design of seepage-proof drainage structure is reasonable, and the effect is obvious in blocking seepage water and reducing the seepage pressure. The plant cavern can operate safely under the existing seepage field.