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| ENGINEERING AND ENVIRONMENTAL PROBLEMS AND COUNTERMEASURES OF HIGH CUTTING SLOPE OF SUBGRADE |
| JIANG Zhong-xin |
| The second Survey and Design Institute of China Railway |
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Abstract Cutting slope engineering of subgrade must fit in with topographic, geologic and environmental characteristics of hillside fields, otherwise it can lead to the cutting slope too high and very bald and bring about engineering and environmental hazards. Aim at engineering and environmental problems of high cutting slope of subgrade, the author analysed interrelation between height of cutting slope and support engineering, interrelation between height and mean gradient of cutting slope, interrelation between height of cutting slope and hillside shape, and interrelation between protective engineering and ecological environmental of cutting slope, and expounded action reducing height of cutting with support engineering, principle changing gently of cutting slope step by step upward , affecting to slope engineering by every hillside shapes, and green engineering measure protecting cutting slope. Accordingly , the author advanced countermeasures for controlling engineering and environmental problems of high cutting slope of subgrade: to construct high and steep support engineering at slope foot, based on principle of the more high then the more slow to cutting slope and to submit to hillside shape, and to protect cutting slope with mainstay (or framework) add plat cover. Take this for example, the author expounded controlling to hazard projects of high cutting slope in the Lugu-Xichang high-speed highway.
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Received: 19 April 2005
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2005, Vol. 22 
