片上水库导流泄洪洞剖析.docVIP

设计总说明 本设计来源于际工程——片上水库，片上水库是海河流域大清河北支流拒马河上的一座大（二）型综合利用水利工程[1]。水库总库容7.16亿立米，死库容0.44亿立米可进行防洪、兴利的调节库容6.72亿立米。 拒马河位于太行山东麓，流域面积约10000km2。地形特点，西部为山区，流域面积约5000km2，东部为平原。山区多为石质山区，植被较少，坡度较陡。仅上游涞源以上分水岭处于黄土高原边缘地区。平原河槽较窄，坡度很缓。本流域且为华北暴雨中心所在，因此洪水大，危害较为严重。 本工程可为东部平原房、涞、涿灌区的一百多万亩农田灌溉、北京生活及工业用水提供水源。、 枢纽建筑物包括：主坝、付坝、溢洪道、泄洪隧洞、导流泄洪隧洞、灌溉发电隧洞及枢纽电站组成。根据工程规模及其在国民经济中的作用，按SDJ12—78规范中的设计标准，工程等级为二等，水库枢纽属于大（二）型，主要建筑物按二级设计，次要建筑物按三级设计，临时建筑物按四级设计。 本设计的主要任务是片上水库导流隧洞（有压）设计。设计内容：确定进口高程，选择首部进口建筑物的型式，拟定喇叭口、渐变段形式，构造及尺寸，闸门及启闭机械类型；根据泄流量确定隧洞断面型式及尺寸，并根据水流、地质、隧洞直径拟定衬砌的型式及尺寸，进行相应的水力计算及结构计算；拟定细部构造：如灌浆孔布置、分缝、排水等。 本设计的主要技术资料：沿线岩层产状平缓，近水平，但岩石新鲜、坚硬、完整，透水性小。但有些地方高角度裂隙密集，对洞顶稳定不利，山岩压力可能大。坚固系数Fk=4，单位弹性抗力系数K0=2kN/cm3，弹模E=4×105 kN/cm2。 由于时间比较冲忙，有些地方难免做得不到位，做得不细致，望老师多多包涵。 关键词：有压隧洞；闸门；挑流消能 The Instruction of Design The design comes from the occasion of the project - on-chip reservoir, on-chip reservoir is on the Haihe River Basin, the Qing the Hebei tributary of the Juma River, a large (b) comprehensive water. The total reservoir capacity of 716 million cubic meters of dead storage of 044 million cubic meters of flood protection, Hennessys adjustment capacity of 672 million cubic meters. Juma is located in the Taihang Mountain, basin about 10000km2. Topographical features, the western mountains, the drainage area of ??approximately 5000km2, the eastern plains. The mountain is mostly rocky mountain, the vegetation is less steep. Only the upper reaches of the Laiyuan more than a watershed in the marginal areas of the Loess Plateau. Plain narrow channel, the slope is very slow. The watershed and where the storm center for the north, so the big flood, the more serious harm. This works for the room of the eastern plains, Lai, Zhuo irrigated area of ??over one hundred acres of farmland irrigation, domestic and industrial water to provide water. , The hub buildings include: the main dam, the payment of dam, spillway, spillway tunnel, diversion spillway tunnel, irrigation, power tunnel and hub