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Underground Structural Monitoring Digital Bolt

This system is a high-tech helical bolt designed to act simultaneously as reinforcement and as a structural monitoring instrument in tunnels and excavations. It measures loads, stress, and rock mass temperature, as well as the containment structure itself, in real time.
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It helps resolve uncertainty regarding geomechanical stability by detecting areas with support deficits early, before they reach risk levels. Its primary benefit is ensuring maximum personnel safety and optimizing preventive work through precise, constant data.

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Main Features

Continuous Monitoring and Real-Time Dynamic Analysis

Process data from the field around the clock to instantly identify and quantify the evolution of instabilities, mechanical stresses, and deformations.

Wireless Connectivity and Long-Range Transmission

Optimize field data capture and transmission by eliminating complex wiring, utilizing modern network topologies and versatile connectivity with wireless nodes, robust long-range data transmission, and compatibility with networks such as LoRa or LoRaWAN.

High Energy Efficiency and Autonomous Operation

Ensure continuous, uninterrupted performance during long-term operations and in remote areas, eliminating reliance on the traditional power grid.

Multiparametric Integration and Universal Communication

allows for the isolated, independent, and simultaneous reading of multiple signals and sensors within a single centralizing unit. Furthermore, it unifies and converts data transfer using standardized, universal industrial communication protocols.

Key Technical Specifications

Load and Breaking Capacity

It withstands extreme demands, with a breaking point reaching up to 24,500 kgf depending on the steel variant.

Analytical Precision

It offers ultra-precise 0.025% FS resolution, ensuring the detection of even the slightest variations in rock mass tension.

Communication Range

Long-range wireless transmissions, covering between 100 and 1,000 meters inside tunnels, and up to 15,000 meters on the surface.

Flexible Dimensions

Customizable structure with lengths from 3 to 4 meters, thicknesses from 22 to 25 mm, and options for 3 or 4 internal load points.

Container Type

The instrument is built entirely on a robust, high-strength steel bolt, certified under the NCH-204 structural standard (grades A440/28H and A630/42H). Its electronic components are fully sealed within the metal body, providing extreme protection against moisture, dust, high pressure, and severe mechanical impact—all common conditions at the underground work face.

Recommended Use

Mining: Essential for controlling galleries, shafts, and underground excavations, preventing collapses and validating fortification strategies.
Civil Engineering: Fundamental for the safe construction of road tunnels, railways, and hydroelectric infrastructure.
Geotechnics: Provides high-value empirical data for modeling soil behavior and adjusting support designs.
Remote Monitoring: Thanks to its extensive wireless transmission capability, it is ideal for remotely monitoring hard-to-reach areas that lack constant human supervision.

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T4G | 24/7 integrated monitoring platform

Our solution integrates seamlessly with various instruments, without the need to replace existing equipment.

Its design allows for quick and easy installation, requires no specialized tools, and optimizes time in any environment.

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