Full
Outline
The signaling system renovation project of Jinbin Light Rail Line 9 is facing strong constraints such as the type of of the terminal station for pre-station turnback, insufficient length of the train inspection garage line, and tight equipment room area. There are significant contradictions with the renovation goals of achieving a 2-minute turnback interval, upgrading the function of the automated train inspection garage, and installing equipment without disturbance. Targeted optimization design is needed. Firstly, the current research status of signaling system transformation was introduced, and the constraints of strong constraint conditions on design objectives were analyzed. Secondly, the focus of the design research is on three aspects: pre-station turnback capability, automated train inspection garage design, and signaling room equipment layout. The key bottlenecks that conventional design methods cannot meet the renovation goals under strong constraints are identified. Finally, this paper proposes a systematic optimization plan: adding axle counter equipment in the pre-station crossover section and changing the switch control logic from double-acting to single-acting, optimizing the safety braking model for train inspection garage stopping and adjusting the C-track interlocking logic, and adopting an uninterruptible power supply (UPS)/battery transition scheme for centralized stations while streamlining the equipment configuration at non-centralized stations. The application results show that the optimization measures effectively solve the contradiction between strong constraints and renovation goals. The turnback interval of the pre-station has been compressed from 136 seconds to within 120 seconds, meeting the requirement of 2-minute operation; The protection distance required for automatic stopping of trains has been shortened from 7.56 meters to within 3.8 meters, achieving automatic entry and exit of trains into the inspection garage; At the same time, the space requirements for equipment installation were reduced, and the equipment was installed without disturbance under the existing equipment room conditions.
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| 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 |
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