Doctoral Dissertations


Bing Zhao


"Coal Log Pipeline (CLP) refers to a new technology for the transportation of coal, which has been developing in the USA over the past several years, and is expected to be used on a commercial scale within the next few years. In a CLP system, coal is prepared in the form of circular cylinders, coal logs, so that the coal can be transported through an underground or overland pipeline. One of the major requirements in the CLP technology is to produce strong and durable coal logs, which can endure a long distance trip through water pipelines without breaking and with a minimum amount of weight loss. To reach this goal, research has taken place on several fabrication methods, such as compaction and extrusion, and good-quality coal logs with a diameter range of 1.8-in. to 5.4-in. have been made, using a simple compaction technique. However, for a commercial application, the size (diameter) of coal logs is expected to be much larger than the range studied in this research, therefore, the relationship in terms of quality between small and large coal logs needs to be investigated in both fabrication process and pipeline transportation operation.

This dissertation describes the research work conducted on investigating scale-up behavior of coal logs during fabrication and pipeline transportation, based on the experiments from two different size coal log and pipeline loop systems. The research work covers the scaling-up effect on the strength from 1.8-in. to 5.4-in. coal logs, and on the coal log wearability during pipeline transportation from a 2-in. and a 6-in. loop"--Abstract, page iii.


Wilson, John W.

Committee Member(s)

Bullock, Richard Lee, 1929-
Grayson, R. Larry
Tien, Jerry C.
Marrero, T. R. (Thomas Raphael), 1936-2015


Mining Engineering

Degree Name

Ph. D. in Mining Engineering


University of Missouri--Rolla

Publication Date

Spring 2000


xiii, 142 pages

Note about bibliography

Includes bibliographical references (pages 136-141).


© 2000 Bing Zhao, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type




Thesis Number

T 7755

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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