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A mathematical model simulating flow of methane and water in coal mine systems.

Authors
Price-HS; Abdalla-AA
Source
NTIS: PB/209-273 Available for Reference At Bureau Libraries, 1972; :1-39
Link
NIOSHTIC No.
10000760
Abstract
This report covers the development of a mathematical model that describes the flow of methane only and methane and water in a coalbed during mining operations. The flow of methane gas from a coalbed that is being actively mined cannot be measured accurately and must be predicted from the known properties of the bed. In general most underground structures have water associated with them; the system to be studied may be single phase (methane gas) or two phase (methane and water). Because the geometry is complex and the fluids have variable properties as functions of pressure and concentration, the differential equations describing the system are not amenable to analytic solutions but must be solved numerically using high-speed computers. The model discussed in this report solves the flow equations for one- or two-phase flow in a heterogeneous anisotropic coalbed.
Keywords
Mining-industry; Mathematical-models; Coal-mining; Methanes; Mine-gases; Coal-gas; Gases; Underground-mining; Water-analysis
CAS No.
74-82-8
Publication Date
19720101
Document Type
CP; Final Contract Report
Funding Type
Contract
Fiscal Year
1972
NTIS Accession No.
PB-209273
NTIS Price
A04
Identifying No.
OFR 10-72
NIOSH Division
PRC
Source Name
NTIS: PB/209-273; Available for Reference At Bureau Libraries
State
PA
Performing Organization
Int'l Computer Appl., Ltd.
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