Title page for ETD etd-2250112849731471

Type of Document

Master's Thesis

Author

Luo, JunLu

URN

etd-2250112849731471

Title

Gateroad Design in Overlying Multi-Seam Mines

Degree

Master of Science

Department

Mining and Minerals Engineering

Advisory Committee

Advisor Name	Title
Karmis, Michael E.
Luttrell, Gerald H.
Haycocks, Christopher	Committee Chair

Keywords

chain pillar
gateroad
overmining
longwall
damage rating
CMRR

Date of Defense

1997-05-02

Availability

unrestricted

Abstract

There are two major design problems for upper seam

longwall gateroads operating in a multi-seam environment.

The first is to determine the location, magnitude and

duration of stress transferred from lower seam mines; and

the second is to predict the effect of stress transferred from

lower seam mines on opening stability. To solve these

problems for both longwall and room-and-pillar mines, case

study data were collected and analyzed to develop

empirical models predicting upper seam damage created by

mining activities in the lower seam. Analysis showed vertical

movement in the upper seam and roof CMRR (Coal Mine

Roof Rating) to be the controlling factors in damage

prediction and, therefore, gateroad planning and design. The

relationship between the predicted damage rating and the

gateroad stability was established and quantified. To

simplify the application of design procedures developed for

longwall gateroad systems, the criteria were incorporated in

a Windows-based, multi-interface software , UGLY

(Upperseam Gateroad Longwall Stability). The

programming language was Visual Basic, and the program's

design capabilities were validated and demonstrated using

case study data.

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