Surface Subsidence Over Longwall Panels in the Western United States

Monitoring Program and Final Results at the Price River Coal co. no. 3 Miine, Utah. by United States. Bureau of Mines.

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SeriesInformation circular (United States. Bureau of Mines) -- 9099
ContributionsFejes, A.
ID Numbers
Open LibraryOL21735447M

Federal and State agencies that have inactive mine subsidence information: United States Department of the Interior Office of Surface Mining (OSM) Federal Reclamation Projects Branch Brooks Towers 15th Street Denver, Colorado () OSM handles emergency subsidence reclamation projects in Colorado and other western States. subsidence over a series of longwall panels. The handbook can also be used to establish an approximate subsidence profile and to predict the maximum tilt, curvature and strain above a mined area, for single panels. When the width of an extracted panel, the depth of File Size: 1MB. movements during the retreat of Longwall 4 on two longitudinal subsidence lines over the start and finish of panel and the two cross-lines that extend across the panel. ACOL commissioned SCT Operations Pty Ltd (SCT) to analyse the subsidence results for Longwall 4 suitable for inclusion in an end. the completion of Longwall 1. Maximum subsidence measured in the centre of Longwall 2 was mm at the completion of Longwall 2 and mm at the completion of Longwall 3, or 53% of a nominal m mining section. Maximum subsidence over Longwall 3 was .

Allgaier, F.K. Surface Subsidence over Longwall Panels in the Western United States. In State of the Art of Ground Control in Longwall Mining and Mining Subsidence; Society for Mining Metallurgy & Exploration: Englewood, CO, USA, ; pp. –Cited by: 7. @article{osti_, title = {Investigation of subsidence event over multiple seam mining area}, author = {Kohli, K K}, abstractNote = {An investigation was performed to determine the sequence of events which caused the surface subsidence and related damage to several homes in Walker County, Alabama, USA. Surface affects compared to mine maps indicated the subsidence to be mine . Underground Coal Operators’ Conference The AusIMM Illawarra Branch 10 – 11 February 83 CALCULATION OF SUBSIDENCE FOR ROOM AND PILLAR AND LONGWALL PANELS Anton Sroka1,2, Krzysztof Tajdus2 and Axel Preusse3 ABSTRACT: A European method of surface subsidence calculation for partial room and pillar and longwall panel mining of coal deposit is presented. SURFACE SUBSIDENCE ENGINEERING (MinE ) Class Room: ESB-E Monday – PM. - Dynamic subsidence process associated with longwall mining. Subsidence Prediction Methods o Final subsidence along major cross-sections o Final subsidence over an rectangular opening o Final subsidence over irregular opening o Determination of.

Mining Science and Technology, 11 () Elsevier Science Publishers B.V., Amsterdam Comments on surface subsidence prediction S.S. Peng Department of Mining Engineering~ College of Mineral and Energy Resources, West Virginia University, P.O. Box , Morgantown, WV (U.S.A.) (Received Septem ; accepted December 6, ) ABSTRACT Peng, S.S., Author: S.S. Peng. Suggested Citation:"A SURVEY OF CURRENT MITIGATION MEASURES."National Research Council. Mitigating Losses from Land Subsidence in the United gton, DC: The National Academies Press. doi: / Groundwater-related subsidence often results in major damage to urban areas. In Mexico City, the buildings interact with the settlement, and cause cracking, tilting, and other major damage. In many places, large sinkholes open up, as well as surface cavities. Damage from Hurricane Katrina was exacerbated due to coastal sinking, associated with groundwater withdrawal. Surface subsidence manifests itself in three major ways: 1. Cracks, fissures, or step fractures. 2. Pits or sinkholes. 3. Troughs or sags. Surface fractures may be in the form of open cracks, stepped slips, or cave-in pits and reflect tension or shear stresses in the ground surface. When the area of surface collapse into the mine void isFile Size: 1MB.

Surface Subsidence Over Longwall Panels in the Western United States by United States. Bureau of Mines. Download PDF EPUB FB2

Measured subsidence values were obtained over four adjacent longwall panels. Major subsidence characteristics such as longitudinal and transverse profiles, angles of draw, time-related subsidence development, and critical width are discussed. The maximum subsidence value of Ft was 68 pct of the mining thickness.

Get this from a library. Surface subsidence over longwall panels in the western United States: final results at the Deer Creek Mine, Utah. [Frederick K Allgaier]. As part of its mine subsidence research program, the Bureau of Mines and the American Electric Power Company cooperated on a study, conducted at the Price River Coal Company No.

3 Mine, directed toward developing the capability to estimate the surface subsidence resulting from longwall mining in a geologic, topographic, and mining environment common to coalfields in the Western United States.

Surface subsidence over longwall panels in the western United States. [Avondale, Md.]: U.S. Dept of the Interior, Bureau of Mines, (OCoLC) Online version: Allgaier, Frederick K. Surface subsidence over longwall panels in the western United States.

[Avondale, Md.]: U.S. Dept of the Interior, Bureau of Mines, (OCoLC) Surface subsidence over longwall panels in the western United States: monitoring program and preliminary results at the Deer Creek Mine, Utah / ([Avondale, Md.]: U.S. Dept of the Interior, Bureau of Mines, ), by Frederick K.

Allgaier (page images at HathiTrust). Search the history of over billion web pages on the Internet. search Search the Wayback Machine. Featured texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection.

Books to Borrow. Top American Libraries Canadian. Surface subsidence over longwall panels in the western United States: final results at the Deer Creek Mine, Utah by Allgaier, Frederick K.

Publication date Topics Mine subsidences, Longwall mining Publisher Pgh. [i.e. Pittsburgh] Pa.: U.S. Dept. of the Interior, Bureau of MinesPages: longwall panel and it can be seen that the majority of the subsidence occurs over the centre of the longwall and tapers off around the perimeter of the longwall.

The subsidence is typically less than the thickness of coal extracted underground. Fig. Typical Subsidence Profile Drawn to a True Scale The angle at which the subsidence spreads File Size: 1MB. promoted increasingly in the United States. Also, longwall mining induces a generally uniform and contemporaneous surface subsidence that can be Technical terms used herein are defined in the glossary, p.

more accurately forecast than subsidence Cited by: Surface subsidence over longwall panels in the western United States: monitoring program and final results at the Price River Coal Co.

3 mine Utah / (Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, ), by A. Fejes (page images at HathiTrust). Author of Investigation of A Laboratory Test For Determination of the Free-Swelling Index of Coal, Physical Properties of Mine Rock, Laboratory Experiments in Electrokinetic Densification of Mill Tailings (in Two Parts), Vanadium, Surface Subsidence Over Longwall Panels in the Western United States, Podiform Chromite Occurrences in the Caribou Mountain and Lower Kanuti River Areas, Central.

Subsidence from longwall coal mining (PDF - KB) Subsidence is a localised lowering of the land surface. It occurs when underground voids or cavities collapse, or when soil or geological formations (including coal seams, sandstone and other sedimentary strata) compress due to changes in moisture content and pressure within the ground.

Mining. Several types of sub-surface mining, and specifically methods which intentionally cause the extracted void to collapse (such as pillar extraction, longwall mining and any metalliferous mining method which uses "caving" such as "block caving" or "sub-level caving") will result in surface subsidence.

Mining-induced subsidence is relatively predictable in its magnitude, manifestation and. Suggested Citation:"THE SUBSIDENCE PROBLEM."National Research Council. Mitigating Losses from Land Subsidence in the United gton, DC: The. Fcjes, A. Surface Subsidence Over Longwall Panels in the Western United States: Monitoring Program and Final Results at the Price River Coal Co.

3 Mine, Utah. BuMines IC ,21 pp. Studies involving subsidence measurements over longwall panels have shown that additional surface subsidence may occur over a mined-out panel as an adjacent panel is being mined, King referred to this as a “triggered subsidence.” This concept can also be applied to multiple seams when mining above a mined-out panel.

PDF | The surface movement in an area of about 22 km² above the underground coal mine of Houthalen was analyzed based on Interferometry with Synthetic | Find, read and cite all the research Author: A. Vervoort. of underground coal mining in the Western United States appears to be the implementa-tion of longwall mining techniques developed in Europe.

Although longwall mining is used virtually exclusively to produce coal from un-derground mines in Europe, it accounts for only 5 percent of annual underground coal production in the United States. Longwall. Purchase Subsidence, Volume 56 - 1st Edition.

Print Book & E-Book. ISBNBook Edition: 1. Critical review of numerical stress analysis tools for deep coal longwall panels under strong strata SURFACE SUBSIDENCE OVER LONGWALL PANELS IN THE WESTERN UNITED STATES -FINAL RESULTS AT THE.

Another study by the Bureau of Mines (Fejes, ) found that subsidence over to foot wide panels at depths of to 1, feet with extraction of feet of coal resulted in subsidence at the center of the panel of to feet (width/depth ratios of ). Surface deformation was found to continue beyond the panel edge and.

8 Types of land subsidence, by Alice S. Allen, Bureau of Mines, U.S. Department of the Interior, Washington, D. INTRODUCTION Land subsidence is merely the surface symptom, and the last step, of a variety of subsurface displacement mechanisms. Not all of these mechanisms are well understood.

Subsidence processes. Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.

In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is a pit, and the. Surface subsidence over longwall panels in the western United States: monitoring program and final results at the Price River Coal Co. 3 mine, Utah. Information Circular/ Technical.

This report summarizes the results from the subsidence research study completed by the U.S. Bureau of Mines at the Roadside Mine, Powderhorn Coal Co., Palisade, CO.

This research was conducted from February to Augustwith additional data obtained during Julyto evaluate residual subsidence. The Bureau studied subsidence at three distinct room-and-pillar sections at separate.

Subsidence can also be caused by natural events such as earthquakes, soil compaction, glacial isostatic adjustment, erosion, sinkhole formation, and adding water to fine soils deposited by wind (a natural process known as loess deposits).

Subsidence can happen over very large areas like whole states or provinces, or very small areas like the. State-Of-The-Art of Ground Control in Longwall Mining and Mining Subsidence [Chugh, Yoginder P.] on *FREE* shipping on qualifying offers.

State-Of-The-Art of Ground Control in Longwall Mining and Mining Subsidence. UNITED STATES DEPARTMENT OF THE I. Report of Investigations Case study of the effects of longwall mining induced subsidence on shallow observation wells above a series of four adjacent longwall panels in southwestern Pennsylvania, for about 4 yr.

Subsidence occurs when large areas of coal are mined and the resulting settlement of roof material into the void (the goaf) results in the surface subsiding over the affected area.

The degree of subsidence that may result from mining will be determined by the thickness of coal extracted, the extent of the area mined, the nature of overburden. ic / a feasibility study of the use of surface redox measurements to detect subsurface methane, coal burns, and hydrothermal deposits, pb, $ 12 ic / surface subsidence over longwall panels in the western united states, monitoring program and preliminary results at the deer creek mine, utah, pb, $.

Impacts of Longwall Coal Mining on the Environment in New South Wales Page 3 Longwall mining is a form of underground coal mining that was introduced to Australia and the United States from Europe in the early s.

It allows mining companies better access and vastly improved recovery rates than older methods of underground mining.Surface subsidence profiles for dipping seams [Whittaker and Reddish, ].

Figure Location of arching over longwall mining [Whittaker and Reddish, ]. Figure Subcritical, critical and supercritical subsidence surface effects [Whittaker and Reddish, ].

Figure It can be seen that in the cases of longwall mining panels with gob caved without packing, the deeper the longwall panel is, the longer the time to reach the final subsidence is. However, it also can be found that the subsidence is completed within 6 months even though the depth of longwall panel is greater than that in FBS mine such as case E Cited by: