摘要
植被护坡自身结构稳定是高陡边坡植被恢复的关键。以“一板双网”的护坡结构工艺为案例,运用力学方法系统地研究了高陡边坡植被护坡的工程附加物在坡面上保持稳定的内在机理,分析了“一板双网”护坡结构各部件对浅层坡面稳定性的作用。结果表明:(1)“双网”起到拉结作用,能减少坡面径流、挡土防滑落、增加坡面工程附加物的稳定性;(2)锚杆与植生板对喷射物起支撑作用,承受下滑力,并通过锚杆向坡体深层传递;(3)植被护坡可减少地表径流,减少水土流失,但植被护坡涵养水分量过高时对坡体结构具有一定的破坏作用。护坡结构失稳的内在原因是下滑转动力矩MT大于抗滑力矩MK。
The stability of biotechnical slope protection is important to the vegetation restoration of high and steep slopes.A case study of the slope structure technology of“One Plate with Double Meshes” is presented.The inner mechanism by which the engineering annexes of biotechnical slope protection keeps stable on the slide slope is systematically studied with mechanical method,and the stability function of the “One Plate with Double Meshes”parts on the stability of the superficial slope layer is analyzed.The results show that:(1)“Double Meshes”play the role of binding which reduces the slope runoff,prevents the soil from slipping,and increases the stability of the engineering annexes.(2)The anchor rods and the vegetative plates support the injection material,bear the sliding force N1,and transmit it to the slope.(3) Biotechnical slope protection may reduce the surface runoff and soil erosion and conserve water,but the high water conservation may damage the slope structure.The intrinsic reason for the instability of biotechnical slope protection is that the sliding torque is greater than the anti-slip torque.
作者
王日明
张志雄
王志强
WANG Ri-Ming;ZHANG Zhi-Xiong;WANG Zhi-Qiang(School of Resources and Environment,Qinzhou University,Qinzhou 535011,China;School of Civil Engineering and Architecture,Qinzhou University,Qinzhou 535011,China;Hunan Zhi-lan Ecological Environment Construction Co.Ltd.,Changsha 410000,China)
出处
《公路》
北大核心
2018年第12期24-27,共4页
Highway
基金
钦州学院校级科研项目,项目编号2017KYQD221
关键词
“一板双网”
高陡边坡
植被护坡
稳定性
"One Plate with Double Meshes"technology
high and steep slope
biotechnical slope protection
stability
