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明山水库壩高32.5公尺,系组合式粘土心墙壩,心墙边坡上下游皆为1∶0.15,上游壩壳填筑壤土,下游为砂壳。壩基复盖层厚度为6～12公尺,由颗粒较均匀的粗砂淤积而成,不均匀系数为3～7。河床以下6～7公尺处,有厚1公尺以上的卵石夹砂层,不均匀系数为38～45。砂的有效粒径为0.3～0.45公厘,卵石最大直径为150公厘。左岸系打板椿围堰开挖至岩盤,除填筑一段粘土心墙外,与防渗连锁管柱相接处另浇筑一段长7公尺的混凝土高墙直达河床并置有锁口。为了避免开挖与管柱施工的干扰,右岸也改成了管柱处理,直达山坡,直接与原设计的混凝土
Mingshan reservoir dam height of 32.5 meters, the Department of combined clay core dam, heart wall slope upstream and downstream are all 1: 0.15, the upper dam shell filling loam, the lower reaches of the sand shell. Dam cover thickness of 6 to 12 meters, from the more uniform coarse gravel deposition, uneven coefficient of 3 to 7. 6 to 7 meters below the riverbed, there is a pebble sand layer more than 1 meter thick, uneven coefficient of 38 to 45. The effective particle size of sand is 0.3 ~ 0.45 mm, the maximum diameter of pebbles is 150 mm. On the left bank of the excavation plate toe rock excavation to the plate, in addition to filling a section of the clay core wall, and anti-seepage interlocking pipe column at the other at a length of 7 meters and pouring concrete wall directly to the river bed and lock. In order to avoid excavation and pipe construction interference, the right bank has also been changed to the column processing, direct hillside, directly with the original design of concrete