渔巴渡变形体失稳风险分析、预测及预警控制

Risk Analysis,Prediction and Early Warning Control of Slope Instability of Yubadu Deformable Body

渔巴渡变形体为毛尔盖水电站库区边坡,距大坝仅约500 m,地质条件复杂且规模较大,一旦失稳将直接影响工程的运行安全。为确保工程安全,针对渔巴渡变形体边坡失稳下滑可能产生的风险,结合工程实际情况,按"防治结合、以防为主"的原则,在实施边坡局部卸载、锚索支护以及内外观监测措施的基础上,通过边坡稳定性分析评价、边坡失稳涌浪影响分析、数值模拟预测边坡变形趋势、边坡失稳预警控制等方法,在较少工程措施的基础上,使渔巴渡变形体边坡失稳风险得到有效的控制,保证了工程运行的安全、节约了工程投资及工期,对类似边坡工程处理具有参考和借鉴意义。

Yubadu deformation body belongs to the Maoergai hydropower station reservoir slope and lies only about 500 m away from the dam. There is complex geological condition,once the instability occurs,it will directly affect the safe operation of the project. To ensure the safety of the project,according to the risk of Yubadu slope deformation,combined with the actual situation of engineering,according to the 'giving priority to prevention,combining prevention with control'principle,in the implementation of the local slope unloading,anchor and the internal and external monitoring measures,based on the analysis of slope stability evaluation,slope instability and surge impact analysis,numerical simulation of slope deformation trend,slope instability warning control method,less engineering measures were taken. The Yubadu deformation slope instability risk can be effectively controlled,which can ensure the engineering safety,save project investment and construction period. It has reference and reference significance for similar slope engineering treatment.