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公路岩质边坡后缘张裂缝发生位置的预测方法
FORECASTING METHOD OF TENSILE CRACK’S POSITION OCCURED AT REAR OF EXPRESSWAY ROCK SLOPE
【Author】 WANG Genlong~(①②)WU Faquan~①LI Juwen~②LIU Haiyan~①CHANG Zhonghua~①(①Key Laboratory of Engineering Geomechanics,Chinese Academy of Sciences,Beijing 100029)(②Institute of Disaster-Prevention Science and Technology,Chinese Earthquake Administration,Yanjiao 101601)
【机构】 中国科学院工程地质力学重点实验室; 中国地震局防灾科技学院;
【摘要】 合理预测岩质边坡后缘张裂缝位置,对于边坡变形监测、滑坡治理具有积极作用。依据能量法原理为理论基础,建立了岩质边坡后缘张裂缝的预测模型。通过强度折减法,推导得到了预测岩质边坡后缘张裂缝位置与能量法安全系数的函数关系。在典型算例分析计算基础上,得出了后缘张裂缝发生位置距坡肩一定距离的结论,并验证了该方法的正确性。
【Abstract】 Forecasting the position of crack at rear of rock slope is very useful for deformation monitoring and landslide controlling.Based on the theory of energy method,the author establishes a forecasting model used to ascertain crack’s position at rear of rock slope.By means of strength reduction method,the function of forecasting the crack’s position and safety factor can be deduced.At the basis of a typical case study,we can draw a conclusion that there are some intervals between back crack and slope shoulder;moreover,correctness of the new method has been validated.
【Key words】 Energy method; Tensile crack; Safety factor; Strength reduction method; Value of b;
- 【会议录名称】 中国地质学会工程地质专业委员会2007年学术年会暨“生态环境脆弱区工程地质”学术论坛论文集
- 【会议名称】中国地质学会工程地质专业委员会2007年学术年会暨“生态环境脆弱区工程地质”学术论坛
- 【会议时间】2007-09-24
- 【会议地点】中国新疆乌鲁木齐
- 【分类号】U416.14
- 【主办单位】中国地质学会工程地质专业委员会