tunnel monitoring technology Articles

  • Tunneling Under Austin, Protecting the Environment, and Preserving the Peace

    ABSTRACTFor over a decade, an existing 42-inch wastewater interceptor has plagued the Austin Water Utility (Utility) with higher than usual maintenance demands. Located in the Walnut Creek flow line, this interceptor is partially exposed with manholes rising several feet above the creek bed due to years of erosion. The interceptor suffers from external erosion and is victim to debris floating ...

  • The Light at the End of the Tunnel - How to Successfully Operate a UV Disinfection System

    ABSTRACTOver the past ten years, ultraviolet (UV) technology has become a commonly applied method of disinfecting of wastewater effluent. UV disinfection involves passing wastewater effluent through a confined chamber with rows of underwater lamps emitting UV energy. Viruses and bacteria become inactivated upon exposure to dosages of UV energy, thereby disinfecting the wastewater. The UV system ...

  • Verify and validate | Temperature monitoring for AGF

    Artificial Ground Freezing (AGF) is a specialized technique commonly used to control groundwater flow and settlement during underground construction.   Generally, a gallery of well loops are sunk into the soil and circulated with brine fluid to freeze and subsequently support the soil structure. While the soil-thermal dynamics can ...


    By BeadedStream

  • Case Study: Using Aspida to Monitor CO2 and O2

    Tunnel Ravne is a network of underground passages and chambers built in ancient times by an unknown prehistoric culture. At some point in history it was deliberately blocked up with dry stone walls backed with thousands of tons of sand and gravel. ...


    By Analox Sensor Technology

  • Real-time environmental monitoring of the Great Barrier Reef

    The Great Barrier Reef (GBR) is the largest natural feature on earth, stretching more than 2300 km along the northeast coast of Australia. It contains a diverse array of species and habitats that are threatened by environmental and human impacts. Monitoring environmental changes would give a better understanding of the health of this ecological system. It would also help shape decision-making to ...


    By Inderscience Publishers

  • Invictus noise monitor on the right track- Case Study

    An international acoustic consultancy was engaged by contractor Balfour Beatty on behalf of the end client Network Rail in this landmark project that is revolutionising transport across London. The Project: The new rail link will help cut journey times to the heart of the capital by two thirds in some cases, passing through 37 stations and running 118km from ...


    By Cirrus Environmental

  • Railway warning and protected system – Bridge Demolition

    So the in-situ stress sensors in the concrete could measure the load changes and stress changes with a building damage after eniem earthquake immediately on-line. The alert with GPS item data is spread world-wide over the Internet. The combination also for everyone accessible maps of the world can facilitate the management after disasters substantially. So fast data are available over destroyed ...


    By IBJ Technology

  • In-situ stress measurement in concrete - a component for the geolocation of the destruction with earthquakes

    So the in-situ stress sensors in the concrete could measure the load changes and stress changes with a building damage after eniem earthquake immediately on-line. The alert with GPS item data is spread world-wide over the Internet. The combination also for everyone accessible maps of the world can facilitate the management after disasters substantially. So fast data are available over destroyed ...


    By IBJ Technology

  • Case study: How benefitial are Wireless Control Systems today ?

    In the area of industrial and commercial automation (control and monitoring) you would normally use a cable to connect electrical devices. Often the operating device is at a different location from where the switching decision is made and this could be a challenge! For example to operate an irrigation pump far away from ...


    By QTech Data Systems (NZ)

  • In-Barge Dewatering Application Offers Innovative Solution Where Lay Down Area Is Unavailable - Case Study

    Tight space constraints are solved by customized Geotube   units in floating barges. Geotube dewatering technology has been used to deliver high performance solutions all over the world in more than 50 countries. Over 2,000 dewatering projects have taken advantage of Geotube containers since 1991. These have involved both small and large situations for lagoon cleanout, ...

  • Turbidity Warning System

    Morgan Est Contractors for National Grid Supply and installation of telemetred groundwater monitoring network, May 2006 ongoing Hydro-Logic recently completed the supply and installation of borehole instrumentation and a telemetry monitoring system to monitor groundwater conditions in 28 observation wells located at 19 sites in the vicinity of Croydon. The ...

  • Automated Treatment System Used to Solve a Costly and Environmentally Critical Wastewater Problem for an East Coast Utility

    BACKGROUND Hydrocarbon and particulate contamination in wastewater is a well-known environmental hazard.  Due to tightening environmental regulations, an ever-increasing source of such contamination in major cities comes from water collected from underground utility vaults and manhole water.  This contaminated water, contains a smorgasbord of potential contaminants from transformers, ground ...


    By Walchem, Iwaki America Inc.

  • Controlling level of toxic liquids for the foam industry case study

    Solid provides a durable solution for level controlling of toxic liquids, using the SmartScan 50L ultrasonic measurement gauge. Polymers Ashkelon Industries located in the city of Ashkelon, is a major supplier of foam for the furniture and mattresses industry in Israel. The company has a long-standing reputation in manufacturing of foam in various shapes and sizes for mattresses, furniture and ...

  • Solutions for Automotive Testing

    In recent years, the field of research, development and testing of vehicles has created a need for integrated testing systems which cover the entire vehicle including engine and driveline. These systems also need to be capable of being deployed globally in a supportive structure. As a means of responding to these market requirements, building on our strengths in vehicle emissions measurement ...


    By HORIBA Europe GmbH

  • Understanding the potential class II – Division I Safety Hazards present when operating Vertical Cuttings Dryers

    For decades, the industry standard for waste management dryers (a.k.a. vertical cuttings dryers) has relied on belt-driven sheaves. Though belt-driven systems are cost effective and relatively easy to implement, at a minimum they have represented a maintenance nuisance, at worst they represent a serious safety concern when ...


    By Elgin Separation Solutions

  • Swedish solution for high-rise building fires

    Swedish fire fighting nozzle specialists, Unifire AB, have developed what may very well usher in a new era in fire fighting: a fully automatic fire detection and extinguishing system, called FlameRanger. The system, according to Unifire, is capable of detecting and extinguishing a fire in seconds of its breaking out, with minimal use of water, and without any human intervention required. Unifire ...


    By Unifire AB

  • Interview with John O`Higgins, chief executive of Spectris

    Environmental issues - a growing concern among organisations Presently, organisations are seriously contemplating environmental issues and are taking necessary steps towards improving their products and processes. Large companies are now focusing on reducing their carbon footprint and ensuring that their products are environment-friendly. Even in niche segments, organisations are ...

  • Questions and answers on the Commission Communication `Towards a Circular Economy` and the Waste Targets Review

    What is a circular economy? A circular economy preserves the value added in products for as long as possible and virtually eliminates waste. It retains the resources within the economy when a product has reached the end of its life, so that they remain in productive use and create further value. It may involve: Increasing the time products deliver their service before ...

  • Operator Strategies : Sorting Out the Plastic

    BETTER BUGS Ideas and products in the Better Bugs category attempt to affect the biological components and biochemistry of processes by altering the mix of microorganisms or enzymes present. After all, biology is the foundation of many, if not most, organics recycling systems. Pyrophiles: The first example of Better Bugs involves pyrophilic organisms, bugs that can take the heat. This example is ...


    By BioCycle Magazine

  • Controlling Bacteria In a Clean Room Environment

    Maintaining the integrity of a cleanroom is a constant battle. The first step to deciding which method, or combination of methods, to employ is to identify the prime sources of contamination. There are three prime sources of contamination through which the integrity of a cleanroom might be breached. First, there is the human element. While many processes might be automated, many situations remain ...


    By GVS Filter Technology

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