Abstract： Analyzed the reasons for the replacement of the shield tail brush and construction risks in the section between Chaoyang Port Station and Shilihe Station of Beijing Metro Line 17, and provided risk countermeasures; the construction technology, construction parameters and main emergency measures of this construction method are introduced in detail. Taking the replacement of the shield tail brush of the shield machine on the left line of the Chaoyanggang StationShilihe Station section of Beijing Metro Line 17 as the engineering background, a construction method of shield tail brush replacement is introduced. In this method, when the shield machine is tunneling to the position of replacing the shield tail brush, inject high-viscosity bentonite and polyurethane through the grouting holes on the shield body and the segments of the shield body, the soil bunker and the surroundings of the shield body, and make a water stop ring; then open the segment to replace the shield tail brush The shield tail grease is applied and the shield machine resumes driving after assembling the segments. The construction method has been successfully applied in actual projects and achieved good implementation results, which can provide technical reference for similar projects in the future.
常润安 胡俊. 北京地铁17号线朝十区间盾尾刷更换技术研究[J]. 土木工程学报, 2020, 53(S1): 213-219.
Chang Run’an Hu Jun. The replacement of shield tail brushes for Chaoyang section of Beijing metro line 17. 土木工程学报, 2020, 53(S1): 213-219.
