基于块体理论抽水蓄能电站地下厂房轴线方向选择研究  

Research on Axis Direction Selection for Underground Powerhouse of Pumped Storage Power Station Based on Block Theory

作　　者：燕军乐 石广斌[2] 司富生[1] YAN Junle;SHI Guangbin;SI Fusheng(Northwest Engineering Corporation Limited,Xi'an 710065,China;Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]西安建筑科技大学,西安710055

出　　处：《广东水利水电》2025年第3期19-22,共4页Guangdong Water Resources and Hydropower

基　　金：陕西省教育厅基金项目(编号:21JK0719)。

摘　　要：抽水蓄能电站地下厂房轴线方向的选择是影响厂房洞室群布置和围岩稳定的重要因素。为确定合适的地下厂房轴线方向,通过对地下厂房地勘平硐的岩体结构面进行统计分析,找出优势结构面;采用块体理论程序计算分析地下厂房轴线方向与块体净下滑力关系;选择块体允许安全系数,分析不同轴线方向形成的块体要达到允许安全系数与所需支护力之间的关系;结合输水发电系统布置,对推荐地下厂房轴线方向下洞室随机块体稳定性进行定量分析,验证了岩体裂隙结构与洞室开挖面组成的块体稳定问题很小,拟定的洞室轴线方向是合适的。The axis direction selection for the underground powerhouse of pumped storage power station is an important factor that affects the layout of the powerhouse and the stability of surrounding rock.In order to determine the appropriate axis direction of the underground powerhouse,the statistical analysis of the rock mass structural planes in the geological exploration adits of the underground powerhouse is conducted to identify the dominant structural planes;The relationship between the axis direction of the underground powerhouse and the net sliding force of the block is calculated and analyzed by using the block theory program;Combined with the layout of the water transmission and power generation system,the quantitative analysis of the stability of the random block in the cavern under the axis direction of the recommended underground powerhouse is carried out.It is the results that block stability problem composed of rock fissure structure and cavern excavation face is very small,the proposed axis direction of the cavern is appropriate.

关 键 词：抽水蓄能电站 地下厂房轴线 块体理论 净滑力 支护压力 

分 类 号：TV731.6[水利工程—水利水电工程]