Grouting horizontal drainage holes in coalbeds

  • 16 Pages
  • 3.56 MB
  • English
Dept. of the Interior, Bureau of Mines , [Washington]
Coal mines and mining -- Safety measures, Mine gases, Me
Statementby George N. Aul and Joseph Cervik
SeriesReport of investigations - Bureau of Mines ; 8375
ContributionsCervik, Joseph, joint author, United States. Bureau of Mines
The Physical Object
Pagination16 p. :
ID Numbers
Open LibraryOL14915077M

Grouting horizontal drainage holes in coalbeds. [Washington]: Dept. of the Interior, Bureau of Mines, (OCoLC) Online version: Aul, George N. Grouting horizontal drainage holes in coalbeds.

[Washington]: Dept.

Details Grouting horizontal drainage holes in coalbeds FB2

of the Interior, Bureau of Mines, (OCoLC) Material Type: Government publication, National government. Grouting horizontal drainage holes in coalbeds [George N.

Aul] on *FREE* shipping on qualifying offers. Download Citation | Study of key technology for gob-side entry retaining in high gas coal face | In order to solve the problem of gas control in high gas coal face, gob-side entry retaining.

Use of a sodium silicate gel grout for plugging horizontal methane-drainage holes. Published Date: Series: Report of investigations (United States. Bureau of Mines) ; Language: English "Stimulated vertical boreholes are an effective means of removing gas from coalbeds in advance of mining.

This Bureau of Mines report examines the. Grouting diamond-drill holes at the Christmas mine, Gila County, Ariz., with notes on the setting properties of cements and the use of liquid carbon dioxide as a pressuring agent in grouting / ([Washington, D.C.]: U.S.

Dept. of the Interior, Bureau of Mines, ), by Stanton L. Tainter (page images at HathiTrust). The processing of repair welding online has been designed in this paper for seal section on flange connected with nozzle on the gasification furnace for coal-water slurry gasify in a Coal.

The large-angle grouting holes were mm below the roof and 4 m deep, and the grouting pipe was 3 m long. The hole of the small-angle grouting holes was under the face guard with a depth of 4 m, and the grouting pipe was 3 m long.

For both large and small-angle grouting holes, one grouting hole was drilled per every two supports (3 m Author: Yulong Chen, Yingchun Li. The lower the level is, the larger the diffusion range of the grout is. The grouting pressure has the greatest influence on the grouting diffusion radius, followed by the grouting horizon and water-cement ratio.

The grouting permeability coefficient has the least influence on the grouting diffusion radius. Full text of "DTIC ADA Bibliography on Grouting." See other formats.

The horizontal angle between the meridian (true or magnetic) and any specified direction. The angle is measured from either the north or the south point, as may be required to give a reading of less than 90 degrees, and the proper quadrant is designated by the letter N or S, preceding the angle, and the letter E or W, following it; as, N.

Review of horizontal drilling technology for methane drainage from U.S. coalbeds / ([Washington]: U.S. Dept. of the Interior, Bureau of Mines, ), by Gerald L. A new drill hole pattern in which two overlapping holes of diameter about /4 in ( cm) are drilled in the tunnel center and left uncharged.

These holes form a slot roughly 4 in by 2 in ( cm by cm) to which the easers can break. All the holes in the round are parallel and in line with the tunnel. Full text of "Subject index to the catalogue of the library of the Institution of Civil Engineers" See other formats.

Full text of "Pumped-slurry backfilling of abandoned coal mine workings for subsidence control at Rock Springs, Wyo." See other formats. Report to Congress: Responses to Recommendations In the National Research Council’s Report Coal Waste Impoundments: Risks, Responses, and Alternatives.

The present work is a systematic experimental study of U(VI) – Organic compounds – H2O ternary systems as a function of pH and the concentrations of uranyl (VI) and organic ligand at 25°C and MPa using a combination of three techniques: UV-visible spectroscopy, ATR-FTIR, and ESI-MS.

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Hazardous Gases Underground Applications to Tunnel Engineering Civil and Environmental Engineering - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free.5/5(1).

To obtain adequate drainage, many horizontal oil production legs are required throughout the field, ranging in length from approximately to mi to maximize exposure.

Due to its remote and environmentally sensitive loca- tion, the Van Gogh field was developed with special con- sideration of logistics, efficiency and environmental effect. Isotopic evidence of enhanced carbonate dissolution at a coal mine drainage site in Allegheny County, Pennsylvania, USA.

Applied Geochemistry. Pool, N. Kruse and M. Vis. Assessment of mine drainage remediated streams using diatom assemblages and biofilm enzyme activities. Hydrobiologia. Measuring the gas content of coal: A review. William P. Diamond @, Steven J. Schatzel Abstract Coalbed gas content measurements are commonly used in mine safety as well as coalbed methane resource assessment and recovery applications.

Gas content determination techniques generally fall into two categories: (1) direct methods which actually measure the volume of gas released from a coal. As seam height increases over m (5 ft), the number of rows of drill holes increases. The holes are loaded with a blasting agent and then shot, exposing the working face of Panel The cycle at Panel 8 then returns to loading, and the coal is removed from the face area ahead of the bolting crew.

predict H2O - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free. Porosity, permeability and 3D fracture network characterisation of dolomite reservoir rock samples. PubMed Central.

Voorn, Maarten; Exner, Ulrike; Barnhoorn, Auke; Baud, Patrick; Reuschlé, Thierry. With fractured rocks making up an important part of hydrocarbon reservoirs worldwide, detailed analysis of fractures and fracture networks is essential.

Description Grouting horizontal drainage holes in coalbeds FB2

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that the holes are used as shafts. Hess e. See:sediment tube calyx boring a. The process of drilling with a shot drill. Long b. The hole or core produced by this process. Long calyx drill A rotary core drill that uses hardened steel shot for cutting rock, which will drill holes from. Scribd es el sitio social de lectura y editoriales más grande del mundo.

Coalbeds, oil sands, and other beds of economic importance commonly are named, but such units and their names usually are not a part of formal stratigraphic nomenclature (NACSN,Art.

26). That portion of an outcrop or face of a quarry that occurs between two bedding planes. Fay e. The level surface of rock upon which a curb or crib is. Dictionary of Mining, Mineral, & Related Terms Compiled and edited by the Staff of the U.S.

Bureau of Mines Second Edition U.S. DEPARTMENT OF THE INTERIOR As the Nation's principal conservation agency, the Department of the Interior has responsibility for most of our nationally owned public lands and natural resources. This book is printed on acid-free paper.

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