重庆市石市大桥基础施工中,为封堵钻孔桩孔壁漏水,采用了一种新的注浆工艺——储能注浆工艺,取得了满意效果。通常化学注浆使用泵压送浆液,注浆的胶凝时间较长,都在20秒至数分钟,不能控制浆液随动水流失。储能注浆使用便携式储能注浆器,浆液为丙凝双液,胶凝时间在1～2秒左右。注浆前需向压浆缸内充气储积一定的压力,利用气体压力输送浆液。这项工艺的特点是初始的注浆压力和输浆率最 In the foundation construction of the Shishi Bridge in Chongqing, a new grouting process, energy storage and grouting technology, was used to block the water leakage from the borehole wall of the bored pile and satisfactory results were obtained. Usually, the chemical grouting uses a pump to feed the slurry. The gelation time of the grouting is long and they are all in the range of 20 seconds to several minutes, and the follow-up loss of the slurry cannot be controlled. The energy storage grouting uses a portable energy storage grouting machine. The slurry is a double coagulation liquid and the gelation time is about 1 to 2 seconds. Before grouting, it is necessary to inflate the squeezing tank to accumulate a certain pressure and use the gas pressure to convey the slurry. The process is characterized by the initial grouting pressure and the most