白马水电站工程岩体力学特性的试验研究

来源 :第四届全国水工岩石力学学术会议 | 被引量 : 0次 | 上传用户:muscleprince
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  白马水电站为混凝土重力坝,坝基持力层主要为灰岩、白云质灰岩,白云岩,以中硬岩为主,能满足建筑物对地基承载力的要求。然而该水电站主要存在以下工程地质问题,首先坝基岩体中发育有溶洞、溶蚀裂隙及其它地质缺陷,存在不均匀变形问题;其次坝基岩体中分布的软弱夹层、F1 断层带,可能对大坝抗滑稳定产生影响;此外两岸坝肩分布有岩溶角砾岩,其粒径大小不一,基本呈散粒状,较疏松,且夹有泥质条纹条带,开挖后形成的高陡边坡存在变形稳定问题。针对上述三个方面的工程地质问题开展了大量的室内及现场岩石物理力学试验,取得了一系列较完整的试验成果,在此基础上结合工程地质情况采用工程地质类比法提出了该电站的岩体力学参数建议值供设计采用。
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