Instrumentation & Structural Monitoring of Dams geotechnical instrumentation

Instrumentation that are used in Structural Monitoring of Dams

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Dam Monitoring Instrumentation – The need for it.

The purpose of Dam Monitoring Instrumentation Dam Monitoring – The Solutions Dam Monitoring Instrumentation Dam Monitoring Instrumentation – Concrete Dams

Dam Monitoring Instrumentation – The need for it.

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Measurement during construction: Measurement after construction is completed Measurement for research

The purpose of Dam Monitoring Instrumentation Safe operation and functioning of a dam entail monetary advantage and public safety. Dam failure can reason catastrophic harm to lifestyles and property. A properly instrumentation software makes use of the statistics to consider the security of the shape by way of gathering facts and detecting any troubles at a preventable stage. ● ● ● ● ● ● ●

The purpose includes: Site investigation Performance monitoring Construction control Design verification Safety Legal protection

Dam Monitoring – The Solutions As leaders in the geotechnical field, Encardio Rite presents reliable, cost-effective, and complete options for the monitoring of extraordinary kinds of dams. From supply, set up and upkeep to seamless statistics series and far off monitoring, it presents the whole spectrum of services.

Here are the solutions/sensors that are provided through Encardio Rite for on-line monitoring:

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Different kinds of geotechnical sensors are required for the correct size of a variety of parameters of the dam.

Data Loggers with GSM/GPRS science for computerized monitoring of geotechnical sensors.

LoRa Nodes and Gateway supplied for computerized monitoring.

Automatic Total Stations (ATS) are used for Geodetic Monitoring.

Web Data Management Services with a public cloud that indicators the approved customers and offers the facts online.

Dam Monitoring Instrumentation As previously stated, each dam is unique, and no one-size-fits-all solution can be applied to all.

It is determined by the dam's size, potential hazards, complexity, foundation, and many other factors known as problems and concerns, as well as the degree of conservatism in the design criteria. Encardio Rite has created a generalised guide for different types of dams based on its involvement with the instrumentation of over 200 dams.

Dam Monitoring Instrumentation – Concrete Dams

In the table below, we talk about the different instruments required while monitoring Concrete dams along with their purpose and location.

Let’s take a look.

Instrument

Purpose

Pore pressure meter

Gauge the seepage of water/pore pressure of water within the cross-section of the dam

Stress meter

Observe the stresses in the concrete dam body

Pore pressure meter

To obtain the true stress, the pore pressure is monitored and then adjusted from stress meter readings

Joint meter – uniaxial and triaxial

Keep an eye on the joint opening between the blocks

Tiltmeter

Monitor tilt of dam

Strain meter rosette

Keep a check on the all the deformation caused due to various reasons

No-stress strain meter

Observe the responses which occur because of any change in temperature, moisture, and autogenous growth in the concrete of the structure. This is adjusted from strain meter readings that provide the accurate strain measurement due to stresses in the dams

Automatic water level recorder

Monitor water level in reservoir

Temperature meter

To prevent the micro-cracks during the casting of the concrete blocks, the temperature is monitored using the instrument. Temperature variation can cause stress on the surface of the dam that can result in material fatigue

Uplift pressure meter

Monitor water pressure on the base of the dam caused due to water seepage from the reservoir to the foundation. This pressure exerts a vertical upward force on the base of the dam and tries to lift it up

Normal plumbline (telecoordinometer)

Check the tilt of the dam that is induced by thrust applied by water pressure

Inverted plumbline (telecoordinometer)

Gauge the relative displacement that occurs between the foundation base rock and the dam bottom

Digital inclinometer or in-place inclinometer

Monitor lateral movement of foundation

Borehole extensometer

Observe the relative displacement of the dam bottom concerning the foundation base rock

Seepage measurement device

Monitor the seepage through, around and under embankments

Optical targets and robotic total stations

Monitor 3D movements or deformations

Dam Monitoring Instrumentation – Earth and rockfill dam and Concrete face rockfill dam (CFRD)

Instrument

Objective

Pore Pressure Meter

Observe the pore pressure of water across the section of the dam

Soil Pressure Meter

Monitor stress and compressive forces

Pore Pressure Meter

To gauge the true stress by monitoring the pore pressure and adjusting it to the stress meter reading.

Digital/in-place Inclinometer

Keep an eye on the lateral movement of foundation

Settlement cell and magnetic extensometer

Check the settlement amount that transpires when the soil is dewatered or loaded.

Automatic water level recorder

Observe the reservoir water level

Inclinometer-cum magnetic extensometer

Take a look at the lateral movement along with the settlement

Soil extensometer

Gauge the soil and rock movement along with the lateral strains & settlement

Seepage measurement device

Monitor amount of seepage through, around and under embankments

Optical targets and robotic total stations with control box

Monitor 3D movements or deformations

Strain gages

Monitor strain in the concrete face

Useful Links ●

Heavy Duty Piezometer (EPP-30V): https://www.encardio.com/geotechnical-instruments/heavy-duty-piezometer

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Area of application: To measure pore water pressure in the soil, earth/rock-fill foundations and concrete structures.

Slim Size Piezometer (EPP-40V): https://www.encardio.com/geotechnical-instruments/slim-size-piezometer

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Area of application: It is designed for measuring pore water pressure in small diameter boreholes and standpipes.

Electrical Uplift Pressure Sensor (EPU-20V): https://www.encardio.com/geotechnical-instruments/electrical-uplift-pressure-sensor

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Area of Application: Uplift pressure measuring device consists of a perforated/non-perforated pipe of 50 mm dia of adequate strength.

Digital Seepage Monitoring System (ESM-12S): https://www.encardio.com/geotechnical-instruments/digital-seepage-monitoring-system

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Area of Application: It is designed for precision measurement and monitoring of seepage in dams or water flow in open channels.

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