滑坡体实时稳定性评价方法研究

发布时间：2018-06-19 19:29

本文选题：滑坡 + 监测数据　；参考：《自然灾害学报》2017年01期

【摘要】：基于现场监测系统所确定的滑坡体滑动面信息,来寻求滑坡体滑动面与室内直剪试验试样剪切面之间的力学变形对应关系。定义滑动面土体总的抗剪力峰值与剪力实时发挥值之比为滑坡体的稳定系数,从而实现了基于监测数据的滑坡体稳定性实时评价。所提方法建立了现场监测数据与滑坡体内部稳定机制间的联系,克服了以往从数理统计角度进行滑坡体稳定性预测评价的不足,又避免了对众多外在不确定复杂因素的考虑。经与4种传统滑坡体稳定性评价方法对某边坡数值模型进行的计算对比分析表明:所提基于滑动面位移监测的滑坡体实时稳定系数计算方法不仅在结果上能和传统方法取得一致,而且还克服了传统方法只能做静态评价的不足,并具有实时性。
[Abstract]:Based on the information of sliding surface of landslide body determined by field monitoring system, the relationship of mechanical deformation between sliding surface of landslide body and shear plane of indoor direct shear test specimen is obtained. The ratio of the total shear peak value to the real time exertion value of the shear force is defined as the stability coefficient of the landslide body, and the real-time evaluation of the landslide body stability based on the monitoring data is realized. The proposed method establishes the relationship between the in-situ monitoring data and the internal stability mechanism of the landslide body, which overcomes the shortcomings of the previous mathematical statistical prediction and evaluation of the landslide body stability, and avoids the consideration of many external uncertain complex factors. The numerical model of a slope is calculated and compared with four traditional landslide stability evaluation methods. The results show that the proposed method based on displacement monitoring of sliding surface can not only calculate the real time stability coefficient of landslide body but also transmit the results. Consistent with the methodology, It also overcomes the shortcoming that the traditional method can only do static evaluation and has real-time property.
【作者单位】：海南大学土木建筑工程学院;中建三局集团有限公司;
【基金】：国家自然科学基金项目(51508141) 教育部第48批留学回国人员科研启动基金项目海南省科协青年科技英才创新计划项目(201506)~~
【分类号】：P642.22

【相似文献】