Subsidence resulting from mining

Subsidence resulting from mining by Young, Lewis Emanuel Download PDF EPUB FB2

Surface subsidence is recognised as a problem in most countries, particularly those with significant mining and other underground resource extraction industries.

This book addresses the problems relating to subsidence whether caused naturally, or arising from mining or other forms of underground extractive Edition: 1. Excerpt from Surface Subsidence in Illinois Resulting From Coal Mining It is undoubtedly to the interest of the State to conserve the coal supply by securing as complete extraction as possible from the areas in which mining is now being carried by: 2.

Subsidence resulting from mining. Urbana, University of Illinois, (OCoLC) Material Type: Government publication, State or province government publication: Document Type: Book: All Authors / Contributors: Lewis Emanuel Young; Harry Harkness Stoek; Illinois coal mining investigations (co-operative agreement).

Subsidence resulting from multiple-seam longwall mining in the western United States: a characterization study /, by Robert C. Dyni and United States. Bureau of Mines (page images at HathiTrust) Bureau of Mines (page images at HathiTrust).

Surface subsidence is recognised as a problem in most countries, particularly those with significant mining and other underground resource extraction industries. This book addresses the problems.

Subsidence, a universal process that occurs in response to the voids created by extracting solids or liquids from beneath the Earth's surface, is controlled by many factors including mining methods, depth of extraction, thickness of deposit, and topography, as well as the in situ properties of the rock mass above the by:   The impact of mining subsidence on the environment can occasionally be very catastrophic, destroying property and even leading to the Subsidence resulting from mining book of life.

Usually, however, such subsidence gives rise to varying degrees of structural damage that can range from slight to very severe. Different types of mineral deposits have been mined in different ways and this Cited by: Ground subsidence is the inevitable consequence of all mining operations conducted over a relatively large area in which safety pillars of adequate size are not maintained.

This subsidence does not in itself constitute a major problem and the resulting disturbances are less serious than those caused by opencast mining. What is Mine Subsidence. In a commonly used coal mining technique, workers created rooms in a checkerboard or grid pattern, leaving pillars of un-mined coal to support the mine roof and the surface.

Over time, perhaps years, decades, or even centuries, there is sinking or shifting of the ground surface resulting from collapse in the underground mine. predictions of mine subsidence parameters. EMPIRICAL METHODS Empirical methods can be developed for the prediction of subsidence parameters whenever a large database of measured subsidence parameters is available.

These methods can be advantageously employed over a wide range of mining geometries. Based on the empirical subsidence coefficient of of the Tingnan Coal Mine under sufficient surface mining, after the mining of working faces, andthe maximum empirical subsidence value should have approached m, but the measured maximum surface subsidence value was only m, much smaller than m, indicating that the surface was far from reaching sufficient by: 2.

UNIVERSITY OF ILLINOIS ENGINEERING EXPERIMENT STATION BULLETIN No. 91 AUGUST, SUBSIDENCE RESULTING FROM MINING BY L. YOUNG Mining Engineer for the Illinois Coal Mining Investigations, and H. STOEK Professor of Mining Engineering, University of Illinois CONTENTS PAGE INTRODUCTION.

Unrecovered coal pillars, often of variable size and spacing, remain to support the overlying strata for an indefinite period of time after mining has ceased. Roof collapse, crushing of pillars, or punching of pillars into the floor is now resulting in sinkhole or trough subsidence tens or even hundreds of years after mining.

damages resulting from mining-induced subsidence. '~eolo~ist. 2~upe~sory geologist. Pittsburgh Research Center, U.S. Bureau of Mines, Pittsburgh, PA. INTRODUCTION The mining of a large rectangular block of coal by the longwall method results in the development of a trough-Cited by: 1.

Subsidence from total extraction (long wall) mining of ahorizontal coal seam under a level landscape 4 5. Mine subsidence can be defined as movement of the ground surface as a result ofreadjustments of the overburden due to.

CONTENTS PAGE ChapterI—Introduction 11 Areainvestigated., 11 Scopeandobjectofreport, 11 Acknowledgments 13 Illinoiscoalfieldandproductiondata 15 ChapterII. Karmakar & Das-Impact of Mining on Ground and Suface Waters occurences due to subsidence. Subsidence depressions, cracks, pits and trough, often induce, disrupt and divert the flow of water on earth's surface and therefore may adversely affect catchment Size: KB.

Chapter (PDF Available) May w Reads. How we measure 'reads' A 'read' is counted each time someone views a publication summary. Searches: coal mining by Practical Law PropertyRelated ContentThis practice note explains when a coal mining search should be carried out, how to make the search, and what information the replies to the enquiries on Form CON 29M () might reveal.

Free Practical Law trialTo access this resource, sign up for a free trial of Practical trialAlready registered. Assessment of the Effects of Subsidence (ACT 54) Report () An internal review of the report "The Effects of Subsidence Resulting from Underground Bituminous Coal Mining " by Tonsor, et al., University of Pittsburgh, Augand related public comments (PDF).

Mining Subsidence by NCB North East Leicestershire Prospect and a great selection of related books, art and collectibles available now at extend beyond the mine footprint. Subsidence, tilt, horizontal displacement, curvature and strain are the parameters normally used to define the extent of the surface movement.

They generally form the basis for assessing the effects of subsidence on surface infrastructure. Longwall mining can result .Subsidence can result from the collapse of a. unattended quarries. b.

pillars in abandoned mines. c. rocks that once held minerals. d. placer deposits.