基于动力特征参数的边坡危岩块体稳定性监测评价模型研究

The instability and the damage of rock slope and dangerous rock blocks depend on the condition of the surface structure. With the opening cracks and the decline the cohesive force of the bonding surface of the structure, dangerous rock blocks will be unstable, and then the collapse will occur. So the method based on conventional displacement monitoring is difficult to achieve the purpose of monitoring and early warning. The instability of dangerous rocks depends on the equivalent bonding condition of the rock and the rock slope, and if the bond condition of dangerous rock and slope rock changes, the dynamic characteristic parameters of rock block will change. By using remote Laser Doppler Vibrometry (LDV), the study focuses on quickly identifing the unstable rock blocks, safety evaluation, monitoring and early warning. Theoretical research, field and indoor experiments on the stability of unstable rocks will be studied to build a dynamic relationship model between dangerous rock stability and dynamic characteristic parameters. By comparing with the results of LDV and conventional vibration sensors, we can acquire the methods which can analyze dangerous rock block stability and identify dangerous rock block, the way to monitor dangerous rock block based on LDV dynamic characteristic parameters and realize rapid identification, evaluation, and monitoring and safety warning of the dangerous rock blocks on the slope.

岩质边坡及危岩块体的失稳破坏取决于岩体结构面的状况，随着结构面的张开及粘结程度下降，危岩块体会发生失稳而产生崩塌，基于常规位移监测方法难以达到危岩块体监测预警的目的。边坡危岩块体的稳定性取决于岩块与边坡岩体的等效粘结程度，而岩块的动力特征参数会随着危岩块体与边坡岩体的粘结程度而变化。以远程多普勒激光测振仪（LDV）为手段，围绕边坡危岩块体快速识别、安全评价及监测预警为研究目标，进行危岩块体动力特征参数与稳定性关系的理论研究、室内实验及现场试验研究，建立危岩块体稳定性与动力特征参数的动态关系模型。通过LDV与常规振动传感器采集数据的对比研究，建立危岩块体稳定性评价及危岩块体识别方法，完成基于LDV动力特征参数的危岩块体远程监测预警方法，实现边坡危岩块体的快速识别、安全评价及监测预警。

岩质边坡及危岩块体的失稳破坏取决于岩体结构面的状况，随着结构面的张开及粘结程度下降，危岩块体会发生失稳而产生崩塌，基于常规位移监测方法难以达到危岩块体监测预警的目的。边坡危岩块体的稳定性取决于岩块与边坡岩体的等效粘结程度，而岩块的动力特征参数会随着危岩块体与边坡岩体的粘结程度而变化。以远程多普勒激光测振仪（LDV）为手段，围绕边坡危岩块体快速识别、安全评价及监测预警为研究目标，进行危岩块体动力特征参数与稳定性关系的理论研究、室内实验及现场试验研究，建立危岩块体稳定性与动力特征参数的动态关系模型。通过LDV与常规振动传感器采集数据的对比研究， 建立危岩块体稳定性评价及危岩块体识别方法，完成基于LDV动力特征参数的危岩块体远程监测预警方法，实现边坡危岩块体的快速识别、安全评价及监测预警。