论文部分内容阅读
沥青灌浆防渗堵漏技术是把比重大于1的沥青加热熔化成流态,再用耐热压力泵将其送入透水基础,沥青经过分散、冷却、凝聚等过程使透水体附着沥青,而达到防渗堵漏的目的。李家峡水电站上游围堰沥青灌浆处理的防渗面积为200m~2,被灌介质为砂砾石层,通过灌浆其渗漏量由原来的0.5～1.0m~3/S,降为0.025m~3/S,加快了施工进度,防渗效果较好。主要技术指标:软化点40℃～96.5℃,闪点200℃～275℃,比重1～1.05,开灌温度150℃～160℃,输送温度120℃～130℃,到达管口处温度100℃～110℃,灌浆压力0.2～0.35MPa。
Bituminous grouting impermeable plugging technology is the proportion of more than 1 asphalt heated melted into a fluid state, and then use heat-resistant pressure pump to send it into the water-permeable foundation, the asphalt after dispersion, cooling, agglomeration and other processes so that permeate attached to the asphalt, and reach The purpose of impermeable plugging. The seepage prevention area of asphalt cofferdam of upstream cofferdam of Lijiaxia Hydropower Station is 200m ~ 2, and the infused medium is sand and gravel layer. The amount of seepage through the grouting is reduced from 0.5 ~ 1.0m ~ 3 / S to 0.025m ~ 3 / S, speed up the construction progress, seepage control effect is better. Main technical indexes: Softening point 40 ℃ ~ 96.5 ℃, flash point 200 ℃ ~ 275 ℃, specific gravity 1 ~ 1.05, open irrigation temperature 150 ℃ ~ 160 ℃, delivery temperature 120 ℃ ~ 130 ℃, reach the nozzle temperature 100 ℃ ~ 110 ℃, grouting pressure 0.2 ~ 0.35MPa.