塑料排水板在土石山区坡地管道中的应用

土石山区坡地管道的敷设受降雨、地形、土壤与地质、植被破坏等各种因素的影响，极易产生水土流失。如何采取有效的手段保持管沟回填土，是涉及管道正常运营的问题。分析了土石山区坡地管道水土流失的原因。介绍了特种土工聚合物－塑料排水板的结构特点城皮地管道中的作用机理及应用。将塑料排水板与截水墙的技术经济指标进行对比得出，土石山区坡地管道采用塑料排水板进行水工保护，既节省工程造价又可有效的保持管沟回填土不被侵蚀

The Application of Plastic Drain Board in Pipeline of Mountainous Slopes

Soil erosion and loss is most likely to occur around pipeline built in soil and rocky slopes of mountain- ous area due to rainfall, topography, soil conditions,destroyed vegetation and other factors. How to make the backfilled soil of pipeline trench stabilized in an effective manner is a major concern for the normal operation of pipeline. In this paper,analysis is given to the causes of soil erosion and loss around pipeline in mountainous slopes and introduction is presented to plastic drain board,a special geopolymer,in terms of its structural features,operating mechanism and application in the pipeline as mentioned above. Based on the technical and economic comparison between plastic drain board and cut-off wall,it is concluded that the employment of plastic drain board for hydrotechnological protection of pipeline in mountainous area involves less construction cost and provides more effective protection against erosion to the backfilled soil of pipeline trench.