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Seismic Coal Exploration : In-Seam Seismics.

Author: L Dresen; H Rüter
Publisher: Burlington : Elsevier Science, 1994.
Series: Handbook of geophysical exploration., Section I,, Seismic exploration.
Edition/Format:   eBook : Document : EnglishView all editions and formats
Summary:
The efficient mining of hard coal in deep coal mines using highly mechanized longwall techniques requires information on the geological structure ahead of the operating face. Even minor tectonic faults with throws of only a few metres mean a loss in productivity, as they present severe working problems for underground mining equipment. Because investment costs to install a mechanized face are high, ""insurance"" in  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Dresen, L.
Seismic Coal Exploration : In-Seam Seismics.
Burlington : Elsevier Science, ©1994
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: L Dresen; H Rüter
ISBN: 9781483287065 1483287068
OCLC Number: 895435245
Description: 1 online resource (446 pages).
Contents: Front Cover; Seismic Coal Exploration: In-Seam Seismics; Copyright Page; Table of Contents; Acknowledgements; CHAPTER 1. Introduction; 1.1. Overview; 1.2. Coal mining concerns; 1.3. Typical geologic disturbances; 1.4. Geological sequences with seams as channels of lower seismic velocities; 1.5. Procedures in fault detection; 1.6. In-seam seismic activities worldwide, a general overview; CHAPTER 2. Physics of Channel Waves in Coal Seams; 2.1. Introduction; 2.2. Seam waves as a result of interfering body waves; 2.3. Dispersive wave trains, phase and group velocity; 2.4. Dispersion curves. 2.5. Attenuation of channel waves in coal seams2.6. Reflection and transmission of Love channel waves at faults and seam ends; 2.7. Anisotropy of coal seams; 2.8. Generation of seam waves; 2.9. Sensitivity curves; CHAPTER 3. Data Processing; 3.1. Introduction; 3.2. Preprocessing; 3.3. Analysis; 3.4. Imaging (mapping); CHAPTER 4. Analogue and Numerical Modeling; 4.1. Introduction; 4.2. Analogue model techniques; 4.3. Numerical methods; 4.4. Results of numerical and analogue modeling. 4.5. Conclusions drawn from the model seismic investigations for the in situ application of the in-seam seismic methodCHAPTER 5. Instrumentation; 5.1. Introduction; 5.2. Conditions for instrumentation in a coal mine; 5.3. Requirements for the measuring instruments; 5.4. Examples of seismic equipment; 5.5. Wave sources; 5.6. Receivers; CHAPTER 6. Data Acquisition; 6.1. Introduction; 6.2. Transmission surveys; 6.3. Reflections surveys; 6.4. Wave sources and receivers; 6.5. General survey operations; CHAPTER 7. Case Histories; 7.1. In-seam seismic surveys in Australian coal mines. 7.2. In-seam seismic surveys in the U.K.7.3. In-seam seismic surveys in Germany; REFERENCES; SUBJECT INDEX.
Series Title: Handbook of geophysical exploration., Section I,, Seismic exploration.

Abstract:

The efficient mining of hard coal in deep coal mines using highly mechanized longwall techniques requires information on the geological structure ahead of the operating face. Even minor tectonic faults with throws of only a few metres mean a loss in productivity, as they present severe working problems for underground mining equipment. Because investment costs to install a mechanized face are high, ""insurance"" in the form of spare capacity by both machine shifts or spare faces is uneconomic. Thus, to reduce mining costs it is essential to delineate the geology prior to mining. Today, the onl.

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