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1 工程概况板桥水库位于淮河支流汝河上游,驻马店城西45km处的泌阳县境内。输水洞位于北裹头砼刺墙与土坝连接段,1#供水管进口高程98.8m,2~#供水管进口高程105m,两条管平行布置,直径1m,全长118m,前段长33m钢管埋于砼刺墙内,后段长85m的17节砼管由40cm厚的砼包裹后座落在坝后沙壳上。1992年12月,管理单位发现坝壳出现渗水,后渗水逐渐加重,喷水柱高达2m,造成坝坡局部塌陷塌坑。管内放空,进入察勘,发现两管破坏处基本
1 Project Overview Banqiao Reservoir is located in the upper reaches of the Ru River tributary of the Huaihe River, Zhuyang City 45 km west of Biyang County. The water supply hole is located at the connecting section of the north concrete headlamp wall and the earth dam. The elevation of the 1 # water supply pipe is 98.8m and the height of the water supply pipe 2 ~ # is 105m. The two pipes are arranged in parallel with a diameter of 1m and a total length of 118m. Steel buried in the concrete wall, the rear section of 85 meters long 17 concrete pipe wrapped by 40cm thick concrete is located in the rear of the sand on the dam. In December 1992, the management unit found that seepage occurred in the dam shell, and seepage was gradually aggravated. The water column was as high as 2m, causing collapse of the dam slope. Empty the tube into the investigation, found two destruction of the basic