The packing gland for the conventional high - pressure grouting is modified to be adaptable to the low - pressure curtain grouting ; by which the application area of the grouting method is enlarged along with improved grouting quality and shortened construction period 摘要通过对常规孔口封闭灌浆法的孔口封闭器进行改造，使孔口封闭灌浆法也适应于低压帷幕灌装工程，从而扩大了其适用范围，提高了工程质量，缩短了工程工期。
