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提出按正态分布密度函数计算软土地区深基坑开挖中由支护结构变位引起周围地表沉降值的公式。实例计算表明该计算方法精度较高，对地表沉降预测有较强的实用性。同时给出了保护周围环境，减少地表沉降的具体措施。
The formula for calculating the surrounding ground settlement caused by the deflection of the support structure in the excavation of deep excavation in soft soil area is presented according to the normal distribution density function. The example calculation shows that the calculation method has high precision and has strong practicality for prediction of ground surface settlement. At the same time, specific measures are provided to protect the surrounding environment and reduce ground surface settlement.