我省自1974年以来,先后对四个中、大型水库的大坝坝基进行了规模较大的帷幕化学灌浆,浆液选用丙凝及铬木素或铬渣木质素。四个坝基地层分别为风化岩、含泥砂砾石、基岩,均取得了满意的灌浆效果。在此实践基础上试写此文,供今后帷幕 Since 1974, our province has carried out large-scale curtain chemical grouting on the dam foundation of four medium-sized reservoirs and reservoirs. The slurry uses propionizing and chrome lignin or chromium residue lignin. The four dam base formations are weathered rocks, silt-gravel and bedrock, respectively, and satisfactory grouting results have been achieved. Based on this practice, try to write this article for the future curtain