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Sunday, October 18, 2020 | History

2 edition of In situ strength characteristics of coal mine floor strata in Illinois found in the catalog.

In situ strength characteristics of coal mine floor strata in Illinois

Yoginder P. Chugh

In situ strength characteristics of coal mine floor strata in Illinois

by Yoginder P. Chugh

  • 48 Want to read
  • 18 Currently reading

Published by Illinois State Geological Survey in Champaign, Ill .
Written in English

    Subjects:
  • Coal mines and mining -- Illinois.,
  • Ground control (Mining) -- Illinois.,
  • Mining engineering -- Illinois.,
  • Mine subsidence -- Illinois -- Research.,
  • Rock mechanics.

  • Edition Notes

    Statementby Yoginder P. Chugh.
    SeriesIMSRP -- III, IMSRP (Series) -- 3.
    ContributionsIllinois State Geological Survey., United States. Bureau of Mines., Illinois Mine Subsidence Research Program.
    Classifications
    LC ClassificationsTN805.I3 C487 1987
    The Physical Object
    Pagination160 p. :
    Number of Pages160
    ID Numbers
    Open LibraryOL14735614M

    the coal bed (King et al.,; Remner et al.,; Diamond et al.,; King and Ertekin,). Despite their lack of attention in the literature, the reservoir and strength properties of coal measure rocks are as important as the mined coal seam itself, since their properties determine gas ow paths. Browse Illinois Mine Subsidence Research Program - Illinois State Geological Survey by Issue Laboratory characterization of immediate floor strata associated with coal seams in Illinois  Chugh, Yoginder (Illinois State Geological Survey, ) application/pdf. PDF (6MB) In situ strength characteristics of coal mine floor strata in.

    Prudent design of coal pillars in any mining system requires an estimation of in-situ pillar strength, overburden lateral load transfer capability, and a failure criterion. Pillar strength is typically determined using one of several different empirical pillar strength formulas. This paper analyses possible causes for floor heaving in room-and-pillar coal mining. The coal mines are in the southern part of Brazil, where the Barro Branco Coal Seam varies in depth from 20m.

    Strong, massive strata on (or near) the coal seam are associated with strong roof/floor interfaces and can increase the seam strength (Perry et al., ). This allows significant strain energy to. The strength characteristics of pillars are dependent on the strength properties of the strata surrounding the coal and the stress path or boundary conditions of the pillar system. Main development pillars, distant from a goaf, have strength limited by geometry and the strength properties of the strata adjacent to the coal seam.


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In situ strength characteristics of coal mine floor strata in Illinois by Yoginder P. Chugh Download PDF EPUB FB2

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In situ strength characteristics of coal mine floor strata in Illinois (IMSRP). In situ strength characteristics of coal mine floor strata in Illinois. Champaign, Ill. ( E. Peabody Dr., Champaign ): Illinois Mine Subsidence Research Program, (OCoLC) Material Type: Government publication, State or province government publication: Document Type: Book: All Authors / Contributors.

Get this from a library. In situ strength characteristics of coal mine floor strata in Illinois. [Yoginder P Chugh; Illinois State Geological Survey.; United States.

Bureau of Mines.; Illinois Mine Subsidence Research Program.]. Get this from a library. In situ strength characteristics of coal mine floor strata in Illinois. [Yoginder P Chugh; Illinois Mine Subsidence Research Program.; Illinois State Geological Survey.].

Get this from a library. In-situ strength characteristics of coal mine floor strata in Illinois. [Yoginder P Chugh; Southern Illinois University at Carbondale. Department of Mining Engineering.; United States. Bureau of Mines.].

In situ strength characteristics of coal mine floor strata in Illinois: Author(s): Chugh, Yoginder: Subject(s): Coal mine floor strata Mine floor control: Issue Date: Publisher: Illinois State Geological Survey: Series/Report: Illinois mine subsidence research program no.

Genre: Report (Grant or Annual) Type: Text: Description:Cited by: 3. In-situ strength characteristics of coal-mine floor strata in Illinois. Open file report, 15 October September Open file report, 15 October September Full Record.

Buy In-situ strength characteristics of coal mine floor strata in Illinois (A Mining research contract report) by Yoginder P Chugh (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : Yoginder P Chugh.

Full text of "In situ strength characteristics of coal mine floor strata in Illinois" See other formats.

Buy In situ strength characteristics of coal mine floor strata in Illinois (IMSRP) by Yoginder P Chugh (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : Yoginder P Chugh. Coal has been mined in 76 counties of Illinois.

More than 7, coal mines have operated since commercial mining began in Illinois about ; fewer than 30 are currently active. To detail the extent and location of coal mining in Illinois, the Illinois State Geological Survey (ISGS) has compiled maps and directories of known coal mines.

The immediate floor bed in the Illinois Basin coal mines is often comprised of weak plastic underclay material. Operational and stability problems were encountered in the past due to the low strength characteristics of the underclay floor.

Among several indicators of the nature of the floor, Atterberg limits are the most important ones that. Yoginder Chugh; Yoginder Chugh Laboratory and field characterization of immediate floor strata in Illinois basin coal mines.

In situ strength characteristics of coal mine floor strata in. The results indicate the nature of floor strata at the two mines to be very similar. Statistically significant correlations were observed for two sets of variables: (1) ultimate bearing capacity and deformation modulus, and (2) natural moisture content of floor in the 0- to inch depth range below the coal seam and ultimate bearing capacity.

In situ strength characteristics of coal mine floor strata in lllinois - Champaign, IL: lllinois State Geological Survey, p.; 28 cm. - (Illinois Mine Subsidence Research Program; Ill) Formerly published as U.S.

Bureau of Mines. Open file report; 16 - 87, September [NTIS no. PB 1. Mine floor control 2. Interior Coal Province, known better as the Illinois Basin. Ab square miles in Illinois are underlain by the coal-bearing sequence of rocks that constitute the Pennsylvanian System.

General Coal Characteristics. Rank - Illinois coals cover the full range of the. The roof and floor lithology should be examined because the roof and floor are critical coal mine structural members and this can help detect weak roof in future reserves.

The Indiana Geological Survey also published a core book of the Illinois Basin G.M. MolindaIn situ estimation of rock strength using sonic logging. Int J Coal Geol. In situ strength characteristics of coal mine floor strata in Illinois by Yoginder P.

Chugh 3 editions - first published in Read Listen. An Analysis of Short Encapsulation Bolt Pull Test (SEPT) Data from Interior Basin Coal Mines In situ strength characteristics of coal mine floor strata in Illinois capacity and in-place.

Influence of backfill on coal pillar strength and floor bearing capacity in weak floor conditions in the Illinois Basin Article in International Journal of Rock Mechanics and Mining Sciences. The Coal Mines in Illinois Viewer illustrates a general depiction of underground mining in the state and will help determine the proximity of coal mines and underground industrial mines to your home or business.

Please follow the instructions below for using the viewer and linking to additional map products that contain more information.Two reports are being prepared, Laboratory Characterization of Immediate Floor Strata Associated with Coal Seams in Illinois and In-Situ Characteristics of Coal Mine Floor Strata in Illinois, Y.

P. Chugh et al. Mitigation In the coming year, members of the University of Illinois Agronomy Department will be working with coal companies and.The Herrin (No.

6) Coal is the most important coal in Illinois. It correlates with the No. 11 Coal of western Kentucky, the Lexington Coal of Missouri, and possibly the Middle Kittaning Coal of Pennsylvania. It is a bright­ banded coal, like nearly all the minable seams in Illinois.

The coal.