Faculty Publications

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Author: search.filters.author.Chandar, K.R.Subject: search.filters.subject.Opencast mine

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    Development of an alert system in slope monitoring using wireless sensor networks and cloud computing technique – a laboratory experimentation
    (Inderscience Publishers, 2023) Mittapally, M.S.; Chandar, K.R.
    Opencast mine slope monitoring is crucial to prevent potential failures. Wireless sensor networks (WSNs) offer real-time data collection and analysis for effective slope monitoring to minimises monitoring costs and improves safety. Utilising cost-effective microelectromechanical sensors, slope conditions are wirelessly transmitted using internet of things (IoT), facilitating immediate insights. Monitoring parameters like moisture, vibration, and displacement predict slope behaviour. It is essential to test the sensors before designing and implementing a system for regular monitoring in the field to know the sensor’s performance and match them to the slope condition. The study entails moisture, vibration, and displacement measurements in clay slope models. ZigBee-enabled XBee SC2 modules transmit data to ThingSpeak, triggering PythonAnywhere alerts. As a result, if soil moisture sensor readings were over the predefined threshold value of 50%, an email alert was triggered at the time of the jump. It is concluded that the alert system was developed by using sensors in the clay model developed at a laboratory scale and suitable for field applications on a large scale. © © 2023 Inderscience Enterprises Ltd.
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    A review on stability analysis of coal mine dumps
    (Inderscience Publishers, 2024) Harish, P.; Chandar, K.R.
    Opencast mines are increasingly extracting deeper coal seams in large quantities, leading to a rise in mine depth and generation of substantial waste. Disposal of this waste becomes challenging due to the need for additional land, resulting in dumping excess waste on existing dumps, posing risks of dump failure, property damage, and loss of life. This paper aims the critical review of the stability of dump slope structures that are present on the weak or disturbed foundations which further leads the dumps to fail. Many researchers have concentrated on the irregular base, loose material presence in the foundation, sloping floors, improper compaction at the foundation level, presence of black cotton soil, etc., stating load of the dumps over the weaker foundations exerts more pressure on the foundation and causing the dumps to fail. It synthesises key findings on stability analysis approaches, design criteria, optimisation techniques, and critical parameters involved in numerical modelling-based design for secure dump slope structures. © © 2024 Inderscience Enterprises Ltd.