经多年井筒地面预注浆工程的实践,研究探索出适合地面预注浆的大段高、高压力的压水试验方法,通过压水试验计算含水层渗透系数,并预测含水层井筒涌水量,其结果与井筒下凿实际涌水量相吻合,可以作为评价井筒注浆效果的依据,也可以作为制定井筒施工技术措施的依据。 After many years of pre-grouting engineering on the wellbore ground, a large section of high and high pressure pressurized water test methods suitable for ground pre-grouting was explored. The hydraulic conductivity test was used to calculate the permeability coefficient of the aquifer and to predict the inflow of water in the wellbore. The result coincides with the actual water inflow under the wellbore, which can be used as the basis for evaluating the effect of wellbore grouting and also as the basis for formulating the technical measures for wellbore construction.