{"id":4948,"date":"2025-12-10T09:37:38","date_gmt":"2025-12-10T09:37:38","guid":{"rendered":"https:\/\/eurohinca.com\/?p=4948"},"modified":"2025-12-10T09:39:13","modified_gmt":"2025-12-10T09:39:13","slug":"production-quality-and-safety-metrics-are-monitored-in-a-microtunnel-project","status":"publish","type":"post","link":"https:\/\/eurohinca.com\/en\/quem-metricas-de-produccion-calidad-y-seguridad-se-monitorizan-en-un-proyecto-de-microtunel\/","title":{"rendered":"What production, quality and safety metrics are monitored in a microtunneling project?"},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

The control of production, quality and safety<\/strong> is essential in microtunnelling, as it ensures that the tunnel progresses within the planned geometric, structural and operational tolerances. Eurohinca applies a continuous monitoring system that allows real-time decisions to be made and ensures that the work meets the requirements of the client, geotechnical and regulatory bodies.<\/p>

These are the main metrics that are monitored during a microtunnel:<\/p>

Production and performance metrics<\/strong><\/h2>

\u25cf Daily feed rate and excavation cycles.<\/h3>

The number of meters excavated per shift and per day is recorded, as well as the duration of each digging-pushing cycle. This makes it possible to detect trends and optimize the execution rate.<\/p>

\u25cf Shear torque, thrust and power consumption.<\/h3>

High values may indicate changes in terrain, head wear or poor line lubrication.<\/p>

\u25cf Sludge flow rates, detrital transport and rheological behavior.<\/h3>

In hydroshield or mixed systems, these parameters are critical to maintain front balance and avoid fines losses.<\/p>

Some of these principles are explained in the guide how to choose between microtunneling, HDD and Direct Pipe<\/a><\/strong>, where operating parameters are related to the construction method.<\/p>

2. Geometric and structural quality metrics<\/strong><\/h2>

Alignment and dimension control<\/h3>

The navigation system continuously registers deviations from the theoretical axis. Any deviations are corrected by the shield orientation cylinders.<\/p>

\u25cf Radii of curvature and behavior of the tube-joint assembly.<\/h3>

Particularly relevant when the work presents complex or curved geometries, as in the case of the microtunnel in El Arenao curve<\/a><\/strong>.<\/p>

\u25cf Tightness tests and internal inspections<\/h3>

Once the section is completed, tolerances, joints and hydraulic behavior are verified by means of CCTV and pressure tests, according to the client's or utility's standards.<\/p>

To familiarize yourself with these technical requirements, it is useful to review the page of pipe ramming<\/a><\/strong>, where the installation and control criteria are explained.<\/p>

3. Safety and HSE Metrics<\/strong><\/h2>

Eurohinca applies HSE plans adapted to small diameter tunnels and confined spaces, monitoring:<\/p>

\u25cf Atmospheric conditions in the well and chamber.<\/h3>

Oxygen, hazardous gases, ventilation, temperature and humidity.<\/p>

\u25cf Access protocols and work permits.<\/h3>

Entry checklists, blocking\/tagging, communication and rescue.<\/p>

\u25cf Incidents, near misses and corrective actions.<\/h3>

They are recorded daily and integrated into a continuous improvement system.<\/p>

The relationship between sustainability, safety and trenchless methods is discussed in urban sewage systems constructed without trenches<\/a><\/strong>, which highlights the reduction of risks for users and operators.<\/p>

4. Pipeline integrity metrics<\/strong><\/h2>