STAMS: Long-term STability Assessment and Monitoring of flooded Shafts Projects uri icon

type

  • European Research Project

reference

  • RFCS-ga-rfcr-ct-2015-00002

date/time interval

  • July 1, 2015 - April 1, 2019

abstract

  • The main objective is to implement solutions to monitor and assess the stability of flooded shafts, for long periods of time.

    The objective will be achieved by subjecting a shaft (a) to periodic measurements, and (b) to continuous monitoring. This

    requires developing new technologies and achieving the following goals:

    � Develop and test a Multi-functional Monitoring Module for periodic measurements.

    � Develop and test an Ultrasonic Inspection Module, featuring the novel combination of ultrasonic profiling and

    ultrasonic imaging, to inspect shafts visually and measure possible deformations.

    � Develop and test water dynamics and gas devices to continuously measure, analyse and asses the stability with

    provision to deploy sensors post-closure, that will withstand shaft filling operations.

    � Develop and test a software control and analysis system to measure, in-situ and in real-time, significant differences

    that may indicate instability or significant changes in a flooded shaft.

    � Develop a modelling approach to assess the long term stability of shafts during and after flooding by coupling the

    hydro-mechanical behaviour with the chemical reactions which occur between the aqueous solution and the shaft lining

    components.For periodic measurements, inspection tools will be implemented with multiple instruments to perform

    measurements of water aggressiveness, gas production and to carry out macroscopic inspection. A software control system

    will be developed to analyse, in-situ, if there are significant changes in the conditions of the shafts acquiring information from

    the inspection modules and from the continuous measurement devices.

    For continuous measurements the objective is to install newly developed devices to monitor the water level recovery

    dynamics. Additionally this device could also be used as reference points to make comparisons between periodic images.

    The

keywords

  • shafts - flooded - montoring - coalmines