西北地区山谷形垃圾填埋场一般具有汇水面积大、土质疏松、易发生山体垮塌等特点，因而需进行降水拦截导排。以实际工程设计为基点，结合当地条件进行了基本参数的选取、断面比选、出口形式选择、消力区段设计计算等。针对场区地形高差大、坡度陡实际情况，给出了陡坡段消力设计计算的一般方法。%Valley-shaped solid waste sanitary landfill in northwest has generally the characteristics of large catchment area, loose soil and high incidence of mountain collapse, therefore, it is required to discharge the rainfall humanly. Based on the actual engineering design and combined with the local conditions, the selection of basic parameters, the choice of the section, outlet of the ditches and the calculation of hydraulic drop pipeline are discussed. According to the actual situation of high level difference and slope, general design and calculate method on hydraulic drop pipeline in slope area is given, and as well as a summary.
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