【摘要】 小浪底水库蓄水后将打破库区原来的自然平衡状态，产生一系列的环境工程地质问题。分析认为，小浪底水库具有产生水库诱发地震的可能性，可能诱震断裂为城崖地、塔底和石井河断层，震级上限为5．5级；不存在永久渗漏问题，对新安煤矿的开采会产生一定的影响，应增加相应的排水措施和加强掘进过程中的地质探查、预报工作；会造成一些老滑坡复活及黄土塌岸问题，黄土塌岸主要发生在库区中部的垣曲古城附近，对滨库地带的居民点有一定影响；蓄水后不会因岩土中存在有害物质造成水质恶化问题，但对某些元素应进行监测工作。更多还原

【Abstract】 A series of issues of environmental engineering geology will be brought about in impoundment of Xiaolangdireservoir that will break the natural balance state in the area. Analysis demonstrates that the regional faults, i. e.,Chengyadi, Tadi and Shijinghe faults, are likely to be the potential source to trigger reservoir seismicity with maximum of 5. 5 in Richter scale. There will be no problem of seepage. Xin’ an coal mine production may be affected,therefore corresponding drainage treatments should be increased, geological exploration and forecast should bestrengthened in advance. Some old landslides will be revived, Loess bank slump will occur along Gucheng of Yuanqucounty in the middle of the reservoir region that will bring about influence on local community near the reservoir. Theharmful substance in the surround rock will not result in the water -- worsening, but it is necessary to monitor someelements.更多还原