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鲁布革水电站位于云贵交界的黄泥河上,为一混合式水电站,装机容量为s0万瓩.地下厂房尺寸为125.0×18.0×38.4m(长×宽×高).此外,还有与厂房平行的主变压器室,尾水闸门室及其它洞室.组成密集的洞室群,厂区主要岩层为灰质白云岩,白云质灰岩,角砾状灰质白云岩。为了研究厂区岩体力学性态和地应力,用多点位移及收敛计进行原位监测,测量试洞开挖引起的位移.文中介绍了量测方法和成果,讨论了试洞开挖围岩的位移特征、时空效应、综合弹模和地应力等,评价了地下洞室的稳定.值得指出的是,原位试洞位移量测有助于提供输入的力学参数和建立原位条件的计算模型,是地下洞室勘测设计的有效方法.
The Lubuge hydropower station is located on the Huangni River at the junction of Yunnan and Guizhou and is a mixed-type hydropower station with an installed capacity of s00000. The underground powerhouse has a size of 125.0 × 18.0 × 38.4m (length × width × height). In addition, there is parallel with the plant. The main transformer room, tailgate chamber and other caverns are composed of dense caverns. The main rock layers in the plant area are gray dolomite, dolomitic limestone, and brecciated gray dolomite. In order to study the rock mechanics properties and in-situ stress in the plant area, in-situ monitoring was carried out using multi-point displacement and extensometers to measure the displacement caused by excavation of the test hole. The measurement methods and results were introduced, and the displacements of the excavation surrounding rock in the test hole were discussed. Characteristics, space-time effects, integrated elastic model, and ground stress, etc., evaluated the stability of underground caverns. It is worth noting that in-situ hole displacement measurement helps to provide input mechanical parameters and establish a calculation model for in-situ conditions. It is an effective method for surveying and designing underground caverns.