Void Detection

EnTech provides subsurface diagnostics that offer a dynamic view of underground infrastructure. Our stacking technologies create a comprehensive system that supplies our clients with timely and accurate information enabling them to make informed decisions.

Void detection begins with an Infrared Energy Pattern Analysis (IR-EPA) investigation of the suspected anomalous areas. Our IR-EPA systems detect specific temperature patterns created by underground leaks & voids caused by pipelines, underground storage tanks (USTs), flood levees, tunnels and waterways.

The IR-EPA investigation can be complimented with Light Detection And Ranging (LIDAR) for large aerial surveys. Sub-meter GPS accuracy ensures that field crews can easily locate areas of concern. We can investigate the entire system using this method without disrupting workflow and cut costs by enabling us to target the areas that need to be further investigated.

Each investigation can be further analyzed by utilizing Second Generation Ground Penetrating Microwave Radar (GPR). GPR provides 3-D views of specific areas that require more detail than IR-EPA can provide. Additional information, such as composition, depth and size of underground anomalies, can help our clients remediate underground leaks.

For more information please click the technologies tab or contact us at info@entechworld.com or 636-207-0200.

Sinkhole 3
Void underneath airport taxiway leads to a jet falling thru the pavement causing damage to the airplane and putting passengers at risk
Subsurface 2
EnTech Engineer performing GPR to determine depth, size and composition of anomaly
Void 3
EnTech finds subsurface voids before they turn into sinkholes

THE PROJECT
Headlines were made at a domestic airport when the landing gear of a commercial airplane, with passengers aboard, fell through the taxiway pavement while approaching the terminal. A 6 ft. by 6 ft. by 8 ft. deep void had formed underneath the pavement as a result of leaks and soil infiltration into a 40-year old buried storm water drainage pipe.

OUR TECHNOLOGY
EnTech was asked to utilize their patented technology to inspect over 2,000,000 sq. ft. of pavement since the drainage system was located beneath all the taxiways and runways.

THE PERSONALIZED SOLUTION
The investigation was performed when air traffic was at a minimum to decrease disruption. We used Infrared Energy Pattern Analysis (IR-EPA) to identify twelve (12) subsurface voids, some of which could have caused major damage had the pavement collapsed.

EnTech utilizes selected non-invasive technologies to investigate & pinpoint hidden infrastructure problems. Our licensed Professional Engineers help you evaluate, maintain, monitor and extend the life of your assets & infrastructure.

For more information about the technologies we use, see the Technologies page.