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一、基本情况平南县练山水库位于同和江支流上,控制集雨面积1.21公里~2,灌溉面积1300亩。坝体为浆砌石双曲拱坝。坝体置于V型河谷内,坝顶河谷宽为47米,最大坝高20米,宽高比为2.35。坝址地质为较致密的砂岩,岩层倾向上游。两岸大部分地段风化层较厚,特别是右岸上部坝肩处为泥质页岩,且有一小断层通过,内有淤泥填充。大坝由不规则的片石浆砌而成,坝底宽4.5米,坝顶宽2..米,坝内设有底宽0.8米、顶宽0.4米的砼防渗墙。溢洪口设在坝顶中部偏左,宽5米,单宽流量为4.33米。/秒,用鼻坎挑
First, the basic situation Pingnan Lian Shan Reservoir is located in the same tributary of the tributary of the river, rainwater catchment control area of 1.21 km ~ 2, irrigation area of 1300 mu. The dam body is masonry double curved arch dam. The dam body is placed in the V-shaped valley, the width of the crest valley is 47 meters, the maximum dam height is 20 meters and the aspect ratio is 2.35. Dam site geology for the more dense sandstone, rock formation upstream. The weathering beds are thick at most locations across the Taiwan Strait, especially muddy shales at the upper dam abutment on the right bank, with a small fault passing through and filled with silt. The dam is made of irregular pieces of masonry, with a width of 4.5 meters at the bottom of the dam and a width of 2 meters at the top of the dam. A concrete cutoff wall with a bottom width of 0.8 meters and a top width of 0.4 meters is installed in the dam. Spillway located in the center of the dam left, 5 meters wide, single wide flow of 4.33 meters. / Second, pick with the nose