METHOD OF DETERMINING THE COAL-BEARING SYSTEM BOUNDARY
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United States of America Patent
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Oct 12, 2017
app pub date -
Apr 4, 2017
filing date -
Apr 8, 2016
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Abstract
A method of determining the coal-bearing system boundary includes the following steps: firstly, determining the high-level boundaries mainly including the tectonic boundary, ore-bearing stratum and geological body distribution boundary, mixed complex boundary, etc.; secondly, determining the major boundary mainly including a fault or fault zone, giant fold or fold assemblage zone, sedimentary boundary, stratigraphic and mineral occurrence boundary, natural geography and artificial boundary, etc.. The determination of each major boundary contains the definition of its interfaces or boundaries with specific meaning among 18 types of such interfaces or boundaries. The coal-bearing system boundary is determined based on the features of the boundaries with specific meaning as well as the boundary development, mineral assemblage and spatial distribution conditions of a specific region. Among these types of boundaries, some boundaries with specific meaning are the necessary conditions for determining the coal-bearing system boundary, while some boundaries are optional conditions.
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