Mine & Karst Subsidence
MEA is a leading expert in subsidence engineering. The main focus of our work in this area is subsidence from underground mining and from karst. With over 35 years of experience, MEA’s staff have provided services across the full scope of subsidence engineering, including significant work in research, site subsidence studies, mine stability, failure analyses, prediction of subsidence displacement and damage potential, subsidence damage evaluation, foundation recommendations, repair recommendations, and grout stabilization design and monitoring. Being foremost in this field, MEA staff have authored over 100 publications on related topics and have worked in ore fields and karst across the U.S. MEA’s experience extends to underground mines in limestone, gold, trona, salt, lead/zinc, iron, and coal. Due to MEA’s broad reach, MEA is licensed to practice in 29 states.
MEA has also been hired by mining companies and others to provide consulting services on active or new operations for both room-and-pillar and longwall mining in addition to low to high extraction old works. Due to the amount of coal mining related work MEA has done, we have designed and developed a cross-hole radar system to detect mine voids. Also, from experience working with karst, MEA has researched and developed a TDR system which can be used to detect incipient subsidence beneath a structure.
Having worked extensively on old mines and both low and high extraction active mines and in karsts, MEA is uniquely qualified and separates itself from other geotechnical and mining engineering companies across the U.S. in the field of subsidence engineering.
For more information on specific projects related to this topic, see the following MEA Technical Bulletins:UPDATE #1: Successful Deep Mine Backfilling to Mitigate Mine Subsidence
UPDATE #10: Borehole Radar Determines Solid Coal and Mined-Out Areas
UPDATE #24: Anatomy of Grouting Mine Voids