Detailed Scenario Analysis

Shallow Open-Cut Portal Zones

Although near the portal, open-cut areas are often crowded with machinery and under strong sun exposure, increasing heat stress.

• Heat Stroke Risk Factors:

1. 1. Heat from machines: Engines produce continuous thermal radiation.
   2. Sun + dust: Combined effect increases core temperature and breathing strain.

• Prevention Measures:

1. 1. Use water spraying and shade to cool the area.
   2. CMN wearables enable early alerts in line with Heat Stroke Prevention for Tunnel Excavation Site protocols.
   3. Rotate workers every 45 minutes with hydration breaks.

Main Tunnel Excavation Face

Excavation faces in tunnels have minimal airflow and high humidity, especially after blasting.

• Heat Stroke Risk Factors:

1. 1. Hot and humid: Temperatures reach 30–35℃, humidity >90%.
   2. PPE insulation: Gear traps body heat.

• Prevention Measures:

1. 1. Limit exposure to 25 minutes per shift.
   2. Use CMN devices across teams to implement Heat Stroke Prevention for Tunnel Excavation Site data models.
   3. Activate remote alerts for high-risk readings.

Secondary Lining & Installation Areas

Heavy equipment and multiple teams make secondary lining zones highly energy-intensive.

• Heat Stroke Risk Factors:

1. 1. Crowded work: Combined body heat and machine exhaust.
   2. Intensive labor: Welding, pumping, reinforcement tasks.

• Heat Stroke Risk Factors:

1. 1. Combine ambient sensors with CMN wearable monitoring for full Heat Stroke Prevention for Tunnel Excavation Site coverage.

   2. Enforce minimum 3 rotations per shift.

Targeted Heat Stroke Prevention Measures

Ventilation & Cooling

Use primary and auxiliary ventilation plus mist fans to improve Heat Stroke Prevention for Tunnel Excavation Site outcomes.

Personal Health Monitoring

CMN wearables monitor core heat stress every 15 seconds using predictive models for heat stroke prevention for tunnel excavation site.

Work-Rest Scheduling

Adopt 25–10 or 20–10 work-rest models for controlled heat load under Heat Stroke Prevention for Tunnel Excavation Site strategy.

Advantages of CMN Smart Wearable Device

Optimized for Subsurface Environments

Fully offline-capable for low-signal areas—ideal for Heat Stroke Prevention for Tunnel Excavation Site needs.

Multi-Level Alerts with High Accuracy

Three-stage alert system designed for confined spaces in heat stroke prevention for tunnel excavation site applications.

Customization for Tunnel Project Safety Teams

Back-end analytics support for tunnel management teams to optimize Heat Stroke Prevention for Tunnel Excavation Site protocols.

Integrated Strategy

1. Report CMN Device Heatstroke Risk Records During Daily Pre-Shift Meetings to Anticipate Key High-Risk Areas Inside Tunnels

Conclusion

Tunnel excavation is a classic example of a high-risk heat stress environment. With strategic planning, scientific work rotation, and the integration of CMN’s real-time wearable solution, Heat Stroke Prevention for Tunnel Excavation Site becomes a measurable, enforceable, and effective practice to protect workers.