Background of the plan:

In the continuous excavation process of tunnel engineering, the complex geological structure and construction activities interact with each other, which can easily lead to a series of safety hazards, among which the production of toxic and harmful gases (such as carbon monoxide, hydrogen sulfide, radon gas, etc.) and flammable and explosive gases (such as methane, hydrogen, etc.) is particularly prominent. Once the concentration of these gases exceeds the standard, it will not only seriously threaten the life and health of on-site workers, leading to accidents such as poisoning and suffocation, but also may cause major safety accidents such as explosions and fires, bringing incalculable losses to the entire engineering project. However, due to the special enclosed environment inside the tunnel and geographical limitations, there are widespread issues The situation where 4G signals cannot effectively cover requires the construction of a real-time gas monitoring system. This system should have the function of accurately and real-time monitoring the concentration of various gases inside the tunnel, and transmit the monitoring data to the outside of the tunnel in a timely manner for on-site operators to view at any time. At the same time, the data needs to be synchronously uploaded to the cloud platform so that users can break through the limitations of time and space and obtain on-site information anytime and anywhere by logging into the cloud platform.

High quality technology(NGPG) Solution:

NGP5-50 Fixed Online Gas Detector:

Gas detection: methane（CH₄）Hydrogen sulfide（H₂S）、 Oxygen (O)₂）Carbon monoxide（CO）

Carbon dioxide（CO₂）Nitrogen oxides（NOx）、 Propionine aldehyde（C3H4O）Radon gas（Rn, etc

NGP dust concentration detection: detecting dust concentrations at mg and ug (PM2.5/10) levels on site

NGPG meteorological parameter detection: wind speed, wind direction, temperature, humidity, atmospheric pressure

NGPG detection system display: LED full-color display screen

NGPG data control box: While collecting data, it is transmitted to the LED display screen of the entrance control box through the tunnel private network. At the same time, this box can also manually trigger emergency alarms and other functions. Once the alarm button is pressed in any control box inside the tunnel, the alarms on all control boxes inside and outside the tunnel will sound. After resolving the on-site crisis, the alarm can be manually turned off.

NGPG cloud platform: Users can log in to the cloud platform with an account and password to access real-time data, historical data, and alarm records anytime and anywhere.

Partial installation pictures on site:

This scheme has high-precision gas concentration monitoring capability, which can obtain real-time and accurate concentration data of various toxic, harmful, flammable and explosive gases in the tunnel. On site operators can view the real-time data at any time, so as to quickly take corresponding safety measures in case of abnormal gas concentration. At the same time, it broke through the tunnel without any obstacles The communication bottleneck of 4G signal adopts wireless transmission technology to transmit monitoring data to the outside of the tunnel in a timely and stable manner, making it convenient for tunnel workers to grasp the dynamic gas environment inside the tunnel in a timely manner, effectively ensuring the safety of operations and the health of personnel during tunnel construction. In addition, to further enhance the convenience of data management and the breadth of information sharing, monitoring data is also synchronously uploaded to the cloud platform. The cloud platform has powerful data storage, processing, and analysis capabilities, allowing users to break through time and space limitations and access on-site gas monitoring in tunnels anytime and anywhere by logging into the cloud platform. This not only helps project managers to timely grasp the construction safety situation and make scientific decisions, but also provides detailed data support for subsequent engineering safety assessments, accident cause analysis, etc.

Mobile gas detection products for supporting tunnel excavation and advancement

NGPG solution technical hotline: 0574-87560144 13567427511