| 基于块体砌筑技术的大岗山高拱坝地质力学模型试验研究 | |
| 张泷 ; 刘耀儒 ; 杨强 ; 杨若琼 ; ZHANG Long ; LIU Yao-ru ; YANG Qiang ; YANG Ruo-qiong | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 地质力学模型试验 块体砌筑技术 拱坝 整体稳定性 加固 geomechanical model test block masory technique arch dam global stability reinforcement TV221.2 |
| 其他题名 | RESEARCH ON GEOMECHANICAL MODEL TEST OF DAGANGSHAN HIGH ARCH DAM BASED ON BLOCK MASONRY TECHNIQUE |
| 中文摘要 | 地质力学模型试验因能真实地模拟复杂地质构造,直观地反映破坏过程而成为研究地基及其上部结构稳定性和安全性的重要方法,广泛应用于高拱坝整体稳定和加固分析。采用块体砌筑技术不仅可以模拟裂隙岩体的变形和强度,而且能模拟坝基不连续结构面、坝体构造以及加固措施。将块体砌筑技术应用于基础处理的大岗山拱坝地质力学模型试验,结合加载和测量监测设备,得到拱坝坝体位移和应力的分布规律、坝体和坝基岩体的破坏机理及破坏过程。采用3个特征超载安全系数K1(起裂安全系数),K2(非线性变形安全系数)和K3(破坏安全系数)对大岗山拱坝整体稳定性进行了评价。通过与国内主要高拱坝模型试验的稳定性结果对比分析,说明大岗山拱坝整体稳定性和安全性均较高。通过与基础未处理的大岗山拱坝模型试验结果对比分析,说明基础处理措施具有明显的加固效果。; A geomechanical model test is an important method to study the global stability and the safety of a foundation and its superstructure since the test can truly simulate a complicated geologic structure and intuitively reflect its failure process.Not only the deformation and strength of jointed rock,but also the discontinuous structural surface,a dam structure and foundation reinforcement measures can be modeled by block masonry technique.This technique is applied to the geomechanical model test of Dagangshan arch dam with foundation reinforcement measures and an overload failure test is conducted by loading,measuring and monitoring systems.The stress and displacement distribution of the dam body are obtained.The failure mechanism and process of the abutment and dam body are explored.The global stalibily of Dagangshan arch dam is evaluated by three characteriastic overload factors,namely K1(the safety factor when crack initiation),K2(the safety factor for large nonlinear deformation) and K3(the safety factor for ultimate load).The comparative analysis with other high arch dam tests indicates that the global stability of Dagangshan is comparatively high.The comparision with the geomechanical model test of Dagangshan without foundation reinforcement measures shows that the reinforcement is effective. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/148726]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 张泷,刘耀儒,杨强,等. 基于块体砌筑技术的大岗山高拱坝地质力学模型试验研究[J],2016, 2016. |
| APA | 张泷.,刘耀儒.,杨强.,杨若琼.,ZHANG Long.,...&YANG Ruo-qiong.(2016).基于块体砌筑技术的大岗山高拱坝地质力学模型试验研究.. |
| MLA | 张泷,et al."基于块体砌筑技术的大岗山高拱坝地质力学模型试验研究".(2016). |
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