摘要
为有效掌握大型滑坡的防治措施设计思路,并合理评价其运营效果,本文以矿区大型滑坡为工程背景,结合滑坡基本特征,开展其防治措施设计及计算;以运营过程中的变形监测数据为基础,通过变形预测评价其运营效果。分析结果表明:滑坡变形特征较为显著,且在降雨工况和地震工况条件下属不稳定状态,具较大失稳风险,且结合滑坡现场条件,将滑坡防治措施设计为“抗滑桩+坡面整理+排水沟”,经计算得出各类防治措施是合理的,满足计算要求和规范要求。在防治措施运营效果评价过程中,现有变形值介于20.08~26.15mm,变形量相对较小,且均小于设计规定的变形控制值50mm,说明防治措施在现阶段具有良好防治效果;通过变形预测,得出28~31期的变形仍会进一步增加,但增加速率明显减小,说明其变形趋于稳定,防治措施在后期也具有良好防治效果。通过研究,充分验证了此滑坡防治措施的有效性,为类似工程积累了经验。
In order to effectively grasp the design concept of prevention and control measures for large-scale landslides and reasonably assess their operational effects,this article takes the large-scale landslides in mining areas as the engineering background,and combines the basic characteristics of landslides to carry out the design and calculation of prevention and control measures;Based on the deformation monitoring data during the operation process,the operation effect is assessed through deformation prediction.The analysis results indicate that the deformation characteristics of landslides are relatively significant,and they are unstable under rainfall and earthquake conditions,being of a great risk of instability.In addition,considering the on-site conditions of landslides,the landslide prevention and control measures are designed as"anti slip piles+slope arrangement+drainage ditches".After calculation,it is found that all kinds of prevention and control measures are reasonable and meet the calculation and regulatory requirements.In the process of evaluating the operational effectiveness of prevention and control measures,the existing deformation values range from 20.08 to 26.15mm,with relatively small deformation amounts and all less than the designed deformation control value of 50mm,indicating that the prevention and control measures have good prevention and control effects at this stage;Through deformation prediction,it is concluded that the deformation of the 28-31 period will still increase further,but the rate of increase will significantly decrease,indicating that its deformation tends to stabilize,and the prevention and control measures also have good prevention and control effects at the later stage.Through research,the effectiveness of this landslide prevention and control measure has been fully verified,gathering experience for similar projects.
作者
刘昕
Liu Xin(Shenyang Building materials Geological Engineering Survey Institute Co.,Ltd,Shenyang,Liaoning,110004,China)
出处
《化工矿产地质》
CAS
2024年第2期154-159,共6页
Geology of Chemical Minerals
关键词
滑坡
防治措施
运营效果
变形预测
Landslide
Prevention and control measures
Operational effectiveness
Deformation prediction
