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Book Chapter

High-resolution Seismic Surveying in the Yongcheng Coal Field, Henan Province

By
Tang Wenbang
Tang Wenbang
*
Institute of Geophysical and Geochemical Exploration Ministry of Geology and Mineral Resources, Langfang, Hebei.
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Published:
January 01, 1989

Abstract

A new definition of the resolution of a thin coal seam is given, and the requirements for obtaining a strong reflection from the thin coal seam are described. The resolution and requirements presented differ from those given in earlier literature. Using a seismic test conducted at the Yongcheng coal field in Henan Province as an example, the main features of a high-resolution seismic survey in a coal field are discussed. By increasing the frequency range and broadening the bandwidth of the seismic source the results show strong reflections from a single thin seam ranging from 2 m to 4.7 m in thickness. Additionally, strong reflections were obtained from coal measures consisting of two seams each 1.5 m thick. Because thin seams are thus routinely detected, the capability now exists for investigating the structural forms of seams as well as for identifying faults of small throw. A basis for research into the properties and variations of seams has now been laid.

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Contents

Society of Exploration Geophysicists Geophysical References Series

An Overview of Exploration Geophysics in China — 1988

Zhao Jingxiang
Zhao Jingxiang
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Wang Yanjun
Wang Yanjun
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Fu Xuexin
Fu Xuexin
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Stanley H. Ward
Stanley H. Ward
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Society of Exploration Geophysicists
Volume
3
ISBN electronic:
9781560802662
Publication date:
January 01, 1989

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