Scheme Background

           ¥               &nbs p;          &nδbsp; Smart Tunnel Monitoring System of Kaili-Leishan Expressway in ®Guizhou

The project is about 21.886Km in length, covering the service area, tr>affic area and 3 toll stations. The main line adopts the standardγ of four-lane expressway, with a design speed of 80km/h. The integr♠al sub-grade width is 21.5m and the separated sub-grade width is 11.25m, with a design load o¶f Highway Grade I. The clear width of tunnel is 10.25m.

The main electromechanical engineering works of this project consist of the m∞onitoring, communication and charging systems of the whole line and th'e tunnel electromechanical engineering system (including tunnel ven‍tilation, lighting, power supply and distribution, monitoring, fire alarm, fire fighting, etc.).

This project is characterized by frequent rains and snows, so the humid climate is a ±big challenge for the protection and performance o★f equipment.

Scheme Topology

Description of Scheme Value Points

1. Selected industrial-grade chips and components with a highly rel←iable industrial design are used to adapt to the harsh environment of tunnel s✘ite with high temperature, strong vibration and electromagnetic inte♣rference, so as to ensure the stable and reliable operation of controllers, industrial Et÷hernet switches and fault-tolerant servers in all electromechanical equ∏ipment areas covered by the tunnel monitoring system;

 2. Proprietary domestic software and hardware are saπfe and controllable. System security prevention strategy is implemented to preven±t unauthorized access of external equipment and ensure fault isolation;

3. Fault prevention and handling: self-recovering redundant network a♦nd data processing, rapid system maintenance and diagnosis, and comprehensive system monitor​ing and management guarantee quick system recovery and replacement, so as to realize smooth upgrade→ and retrofit of tunnel supervisory control system;

4. The expressway tunnel monitoring system solution has been appl¥ied to about 30 expressways nationwide, demonstrating high o∞perability and overall cost performance;

5. A dozen of branches or offices have been across the country to provide localiz‍ed and customized services, and timely respond to €customer demands.