马来西亚巴蕾水电站坝址区风化倾斜层状岩体变形特性研究  

Research on the Deformation Characteristics of Weathered Inclined Layered Rock Mass at Dam Site of Baleh Hydropower Station in Malaysia

作　　者：郭冲 杜卫长 邓伟杰 赵顺利 方旭东 GUO Chong;DU Weichang;DENG Weijie;ZHAO Shunli;FANG Xudong(Jianghe Engineering Inspection and Testing Co.,Ltd.,Zhengzhou 450003,China;Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]江河工程检验检测有限公司,河南郑州450003 [2]黄河勘测规划设计研究院有限公司,河南郑州450003

出　　处：《河南科技》2023年第11期53-57,共5页Henan Science and Technology

基　　金：江河工程检验检测有限公司自主研究开发项目(JH-ky04-2022)。

摘　　要：【目的】马来西亚巴蕾水电站坝址区强风化陡倾角层状岩体变形特性参数获取困难,需要对坝址区风化倾斜层状岩体变形特性进行研究。【方法】基于水平层状岩体变形模量求解模型和坐标转换理论,考虑岩体层理变形影响效应,构建任意倾角层状岩体变形模量的求解模型,推导出倾斜层状岩体变形模量的解析方程,并通过坝址区强风化陡倾角页岩的露天堆载法岩体变形试验成果对模型的准确性和适用性进行验证。【结果】研究结果表明,坝址区强风化倾斜层状岩体的压力—变形曲线均为下凹型,与岩体的层理、裂隙分布状况密切相关。【结论】考虑层理变形影响的倾斜层状岩体变形模量计算模型可准确求解任意产状的风化层状岩体的变形模量,理论解与现场实测值的相对误差较小,且准确性随岩体完整性的提高而显著提升。[Purposes]It is difficult to obtain the deformation characteristic parameters of strongly weathered and steeply inclined layered rock mass in the dam site area of Baleh Hydropower Station in Malaysia,so it is necessary to study the deformation characteristics of weathered and inclined layered rock mass in the dam site area.[Methods]Based on the calculation model of deformation modulus of horizontal layered rock mass and coordinate transformation theory,the effect of bedding deformation on rock mass was considered,the calculation model of deformation modulus of layered rock mass with arbitrary dip angle was derived,and the analytic equation of deformation modulus of inclined layered rock mass was established.The accuracy and serviceability of the calculation model was verified through the deformation test results using accumulation load method of the strongly weathered layered shale with steep dip angle at the dam site area.[Findings]The research results show that the pressure-deformation relation curves of the strongly weathered layered shale with steep dip angle at the dam site area are down-concave,which is related to distribution of rock bedding and fracture.[Conclusions]The calculation model of deformation modulus of inclined layered rock mass can compute the deformation modulus of weathered layered rock mass with arbitrary attitude accurately,the relative error between the theoretical solution and the field measurement is small,and the accuracy is improved significantly with the increase of rock mass integrity.

关 键 词：倾斜层状岩体 层理变形 变形模量 变形试验 

分 类 号：TV221.2[水利工程—水工结构工程]