我国每年的基坑工程造价总额约为3000亿人民币,其中所消耗的能源及产生的CO2等温室气体排放量均超过了全国相应总量的1%。为此提出了推广使用沉井可控下沉法的基坑支护技术方案的建议,以达到节材降耗、节能减排,进一步实现基坑工程的安全、环保、优质、高效、低造价的目的,并征询同行专家的意见。 China’s annual total cost of foundation pit construction is about 300 billion yuan, of which the energy consumed and the resulting emissions of CO2 and other greenhouse gas emissions are more than 1% of the corresponding total. In order to promote the saving of material, energy saving and emission reduction, and to further realize the safety, environmental protection, high quality, high efficiency and low cost of foundation pit engineering, a proposal of promoting the use of the caisson support technology of caisson controllable subsidence is proposed The purpose of consultation and peer expert advice.