Last edited by Tenris
Friday, July 10, 2020 | History

1 edition of In situ strength characteristics of coal mine floor strata in Illinois, by Yoginder P. Chugh found in the catalog.

In situ strength characteristics of coal mine floor strata in Illinois, by Yoginder P. Chugh

In situ strength characteristics of coal mine floor strata in Illinois, by Yoginder P. Chugh

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

    Subjects:
  • Mine subsidences - Illinois

  • Edition Notes

    11

    The Physical Object
    Pagination160 p.
    Number of Pages160
    ID Numbers
    Open LibraryOL22054532M

    The study mine is a room and pillar mine located in the Illinois Basin and is mining the No. 5 seam. The depth of cover ranges from ft with a mining height of ft. There are three different roof geologies. 1. Black shale/limestone 2. Thick Dykersburg Shale 3. Stackrock. The stackrock presents the most difficult roof conditions. A coal burst mitigation strategy for tailgate in mining of deep inclined longwall panels with top coal caving at Huafeng Coal Mine is presented in this paper. Field data showed that coal bursts, rib sloughing or slabbing, large convergence, and so forth frequently occurred within the tailgate entries during development and panel retreating employing standard longwall top coal caving (LTCC.

    Marshall County, Illinois Coal Mining History; Excerpt from: Past and Present of Marshall and Putnam Counties Illinois 2: Steuben Township. Steuben township is called on the government maps Town 12 N., R. 9, E. of the 4 P. M. It lies along the western bank of the Illinois river and contains twenty-seven full sections and six fractional. Coal mining - Coal mining - Underground mining: In underground coal mining, the working environment is completely enclosed by the geologic medium, which consists of the coal seam and the overlying and underlying strata. Access to the coal seam is gained by suitable openings from the surface, and a network of roadways driven in the seam then facilitates the installation of service .

      Based on laboratory tests performed by Lis, on sandstone and dolomite cylindrical specimens of 44 mm in size from the LGOM mines, and assuming that the relationship for specimen strength has a product-like form: (5) σ p =σ c f B H =K d f B H, where σ p is the strength of specimen of B width and H height, σ c the strength of material.   For much of the 19th and 20th centuries, the coal-mining industry thrived in the state's southern section, which sits atop a mile-long coal- and oil-rich geological formation called the Illinois Basin. At its peak in the s, Illinois mines employed approximately , workers and produced million tons of coal annually.


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

In situ strength characteristics of coal mine floor strata in Illinois (IMSRP) [Chugh, Yoginder P] on *FREE* shipping on qualifying offers. In situ strength characteristics of coal mine floor strata in Illinois (IMSRP).

In-situ strength characteristics of coal mine floor strata in Illinois (A Mining research contract report) [Yoginder P Chugh] on *FREE* shipping on qualifying offers. Originally published September as a mining research contract report by Southern Illinois University at Carbondale (contract JO) for the Bureau of.

Chugh, Yoginder P. 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. 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.]. In-situ strength characteristics of coal-mine floor strata in Illinois.

Open file report, 15 October September Technical Report Chugh, Y P. The report presents data on bearing capacity and in-place shear-strength characteristics of immediate floor strata.

In situ strength characteristics of coal mine floor strata in Illinois Book Chugh, Y P This report presents data on bearing capacity and in-place shear strength characteristics of immediate floor strata. Actively mined coal seams in Illinois (No.

6 and No. 5) are generally underlain by weak ( psi compressive strength) and relatively thick ( ft) underclays. Therefore, a consideration of floor interaction with roof and pillar elements is extremely important.

Chugh, Yoginder P. 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. data from coal samples for the Illinois Basin coal assessment. 6 3. Data source, number of samples analyzed, name of ASCII file containing chemical data, State, coal-bearing stratigraphic unit, and coal names of assessed coals for the regional summaries from the Illinois Basin coal.

Current Publications. Mine Subsidence in Illinois: Facts for Homeowners – Circular, 9 MB PDF file. Planned Coal Mine Subsidence in Illinois: A Public Information Booklet – Circular, 3 MB PDF file. Illinois Coal Mining Statistics – Coal production, coal mining productivity, coal-mined acreage, and coal resources available for mining.

Yoginder Chugh; View project. In situ strength characteristics of coal mine floor strata in Illinois. The results indicate the nature of floor strata at the two mines to be very similar.

This research determines shear strength and stiffness properties of bedding planes and joints in the roof strata rocks within to 9 m ( ft.) overlying the Illinois #6 coal seam (within the.

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. 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. The accompanying coal mine directory for each county provides basic information about the coal mines.

Coal has been mined in 76 counties in Illinois and more than 7, coal mines have operated since commercial mining began in Our maps of known mines for each of these counties may help the public to identify mined areas.

(Touseull and Rich ). Most mine subsidence in Illinois, however, is related to coal mining, which represents the largest volume extracted and area undermined in the state of any solid commodity.

The total acreage where coal mining has occurred (fig. 1) far overshad-ows the acreage undermined for all other commodities (table 1). A CCTR Indiana Center for Coal Technology Research 6 COAL RANK Anthracite coal is a dense, hard rock with a jet- black color & metallic luster.

It contains between 86% and 98% carbon by weight, & it burns slowly, with a pale blue flame & very little smoke. This paper develops a rational approach for design of coal pillars under weak floor strata conditions considering ultimate bearing capacity (UBC) as well as pillar settlement.

An approximate solution is presented for estimation of UBC for a shallow foundation on a two-layered rock system with consideration of both cohesion (c) and (ø) for both layers. In situ strength characteristics of coal mine floor strata in Illinois by Yoginder P.

Chugh 3 editions - first published in Read Listen. This paper develops a rational approach for design of coal pillars under weak floor strata conditions considering ultimate bearing capacity (UBC) as well as pillar settlement.

An approximate solution is presented for estimation of UBC for a shallow foundation on a two-layered rock system with consideration of both cohesion (c) and (ø) for.

Management of coal mining and coal processing wastes, particularly of high sulfur coals, can generate excessive amounts of sulfate (SO4 2−) and chloride (Cl−) in mine drainage that are known to negatively impact quality of both surface and ground water.

The U.S. Environmental Protection Agency provides guidance to states on allowable SO4 2− and Cl− discharges from mine sites.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 Illinois  Chugh, Yoginder (Illinois State Geological Survey, ) application/pdf. PDF (3MB.