To address the issue of not being able to provide an opencut receiving well at the receiving end of rectangular pipe jacking, this study analyzes the soil prereinforcement scheme used in the construction of rectangular pipejacking reception. It explores the appropriate structural type for the castinplace section of the abandoned shell and proposes a waterproofing scheme between the castinplace section of the abandoned shell, the precast pipe joints, and the hidden beams and columns of the station. t This study is based on the new entrance project of Jingjiang Road Station on Tianjin Metro Line 2. The processes, including the shutdown of the pipe jacking machine and grouting, are also optimized. Practical results show that the proposed scheme ensures the safe construction of the abandoned shell reception, with monitoring data indicating a maximum surface settlement of 12.12 mm. The key technology proposed in this paper are highly feasible and effective, offering a new design approach for similar projects, such as abandoned shell reception, where construction site limitations exist.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |