我们今年在商丘实验区铺的排水暗管,由于施工时间紧,且正值雨季,施工质量差,特别是检查井砖缝和水泥管与砖筒的接口均未用水泥砂浆灌满,周围填土又不实,6月13日一场大雨(降雨量40多毫米),从检查井的缝穴中流入大量泥沙。而井内的暗管口无防泥沙设施,暗管出水口的排水沟又未完工,致使大量泥沙在暗管中淤积。雨后第三天观察,每个检查井内都有20～30厘米浑水,目下部沉积有40～50厘米粉砂土,检查井的暗管口全部被泥砂堵塞。我们在第一条暗管83米处和第三条暗管153米处扒开检查,发现管内已有五分之四的 Due to the tight construction time and the rainy season, the quality of construction is poor. In particular, the interfaces between the inspection well and the cement pipe are not filled with cement mortar. The surrounding fill The soil was not real. On June 13, a heavy rain (over 40 mm rainfall) infiltrated a large amount of sediment from the cracks in the inspection wells. However, there are no anti-sediment facilities in the underground pipe in the well, and the drains in the underground pipe outlet have not been completed yet, resulting in a large amount of sediment in the underground pipe. Observed on the third day after the rain, each inspection well has 20 ~ 30 cm of muddy water, the lower part of the deposition of 40 to 50 cm of silt, the inspection hole all the dark tube blocked by mud. We inspected the first 83 meters of dark tubes and the third 153 meters of dark tubes and found that four fifths