陡高边坡拉平势场力问题

陡高边坡区具有一定强度的拉平势场力，其特性一般被边坡岩体重力所掩盖，影响了对边坡态势特征的正确认识，边坡拉平势场力，由近期侵蚀夷平面以下岩体自重新派生的水平分力、太阳辐射能对边坡岩体形成的温差应力、地下水压力三者耦事组成，并偕岩体重力对边坡产生作用，依据其作用所形成边坡应力状态，与边坡岩体顺卸荷向的力学特性对比，可确定边坡的变形与稳定情况；并依据工程与建筑物结构要求确定防治的优化措施，基于对三峡工程永久船闸陡高边坡关键技术课题攻关研究，结合天生桥（Ⅱ）水电站厂房后坡、五强溪水电站左岸船闸边坡研究，提出的思路与作法，适宜于西部大开发中的陡高边坡工程研究的参考。

Problem of Even up Potential Energy Force in High Steep Slope

A number of even up potential energy force have existed in high steep slopes;but their important properties were screened by rockmass gravity so that people cannot correctly understand its effect on the state of slope.Even up potential energy force was formed by coupling several stresses,such as ground level intial stress,geothermal stress,ground water pressure etc.They with rockmass gravity are put into applied force in high steep slope according to the stress behaviour in slope the mechanical properties of rockmass along alignment can to analyse the state of defermation with assessment of slope stalility.On the basis of result a prevention and contral optimun plan for slope project will be presented.Based on the researches of key problem of the permanent shiplock slope of TGP,and considering the research results of the power house slope of Tianshangqiao Project and the shiplock slope of Wu qiangxi Project,some new ideas and measures are put forward.It will be useful for China's western area's development.