The development and construction of highways and tourist areas are increasing day by day, and the proportion of tunnels in construction is also increasing. Tunnel excavation work is also highly valued by project construction companies and the country. Tunnels are limited spaces with poor ventilation. It is easy to produce flammable gases and toxic and harmful gases during excavation construction. These gases are retained in the tunnel, threatening the health and life safety of tunnel construction workers, and may also cause major disasters and losses to tunnel projects. Therefore, the prevention and control of harmful gases in tunnels is the focus of tunnel construction, and 24-hour online detection of harmful gases in tunnels is also an indispensable protective measure for tunnel construction.

Solution:

During the tunnel excavation process, the most easily produced toxic and harmful gases are mainly: CO carbon monoxide, CH4 methane, H2S hydrogen sulfide, O2 oxygen, SO2 sulfur dioxide, CO2 carbon dioxide. In addition, to prevent workers from suffocating due to lack of oxygen, the concentration of O2 oxygen must also be detected.

Monitoring location: dangerous places where gas leakage is prone to occur, such as tunnel entrances, the middle of tunnels, tunnel bifurcations, tunnel excavation sites, and near blasting sites.

Monitor gases and other hazardous substances: CO, CH4, H2S, O2, SO2, CO2, dust particles (PM2.5+PM10)

Installation requirements: If the new national standard is strictly followed, a gas alarm is installed for every 25 square meters. Users can also determine it according to the actual situation on site.

Solution:

During the tunnel excavation process, the most toxic and harmful gases are mainly: CO carbon monoxide, CH4 methane, H2S hydrogen sulfide, O2 oxygen, SO2 sulfur dioxide, CO2 carbon dioxide. In addition, to prevent workers from suffocating due to lack of oxygen, the concentration of O2 oxygen must also be tested.

Monitoring location: dangerous places where gas leaks are likely to occur, such as tunnel entrances, tunnel middles, tunnel forks, tunnel excavation sites, and near blasting sites.

Monitor gases and other hazardous substances: CO, CH4, H2S, O2, SO2, CO2, dust particles (PM2.5+PM10)

Installation requirements: If the new national standard is strictly followed, one gas alarm is installed in 25 square meters. Users can also determine it according to the actual situation on site.