A Rock Mass Assessment Procedure Based on Quantitative Geophysical Log Analysis of Coal Measure Sequences

2005 ◽  
Vol 36 (1) ◽  
pp. 112-117 ◽  
Author(s):  
Peter Hatherly ◽  
Terry Medhurst ◽  
Renate Sliwa ◽  
Roland Turner
Keyword(s):  
Rock Mass ◽  
Coal Measure ◽  
Log Analysis ◽  
Assessment Procedure ◽  
Geophysical Log

scholarly journals A rock mass assessment procedure based on quantitative geophysical log analysis of coal measure sequences

2005 ◽  
Vol 58 (1) ◽  
pp. 112-117
Author(s):  
Peter Hatherly ◽  
Terry Medhurst ◽  
Renate Sliwa ◽  
Roland Turner
Keyword(s):  
Rock Mass ◽  
Coal Measure ◽  
Log Analysis ◽  
Assessment Procedure ◽  
Geophysical Log

Quantitative geophysical log analysis in coal measure sequences

2004 ◽  
Vol 2004 (1) ◽  
pp. 1-4
Author(s):  
Peter Hatherly ◽  
Roland Turner ◽  
Renate Sliwa ◽  
Terry Medhurst
Keyword(s):  
Coal Measure ◽  
Log Analysis ◽  
Geophysical Log

scholarly journals Groundwater salinity mapping using geophysical log analysis within the Fruitvale and Rosedale Ranch oil fields, Kern County, California, USA

2018 ◽  
Vol 27 (2) ◽  
pp. 731-746 ◽  
Author(s):  
Michael J. Stephens ◽  
David H. Shimabukuro ◽  
Janice M. Gillespie ◽  
Will Chang
Keyword(s):  
Oil Fields ◽  
Log Analysis ◽  
Groundwater Salinity ◽  
Kern County ◽  
Geophysical Log

scholarly journals Strength constraints of shallow crustal strata from analyses of mining induced seismicity

2013 ◽  
Vol 5 (1) ◽  
pp. 737-765 ◽  
Author(s):  
M. Alber ◽  
R. Fritschen ◽  
M. Bischoff
Keyword(s):  
Rock Mass ◽  
Strength Properties ◽  
Coal Measure ◽  
Seismic Events ◽  
Mining Induced Seismicity ◽  
Strength Tests ◽  
Seismic Records ◽  
Coal Measure Rocks ◽  
Rock Mass Failure ◽  
Strength Constraints

Abstract. Stress redistributions around large underground excavations such as coal mines may lead to failure of the surrounding rock mass. Some of these failure processes were recorded as seismic events. In this paper the different failure processes such as rock mass failure or the reactivation of faults are delineated from the seismic records. These are substantiated by rock mechanical analyses including laboratory strength tests on coal measure rocks obtained from underground drilling. Additionally, shear tests on discontinuities in coal measure rocks (slickensides in shale and rough sandstone joints) were conducted to grasp the possible variation of strength properties of faults. Numerical modeling was employed to evaluate the state of stress at the locations where seismic events did occur.

Attention Deficit and Disruptive Behavior Disorder Symptoms

2001 ◽  
Vol 17 (1) ◽  
pp. 25-35 ◽  
Author(s):  
G. Leonard Burns ◽  
James A. Walsh ◽  
David R. Patterson ◽  
Carol S. Holte ◽  
Rita Sommers-Flanagan ◽  
...  
Keyword(s):  
Attention Deficit ◽  
Rating Scales ◽  
Behavior Disorder ◽  
Disruptive Behavior Disorder ◽  
Subjective Rating ◽  
Time Interval ◽  
Assessment Procedure ◽  
Frequency Count ◽  
Hyperactivity Disorder ◽  
Oppositional Defiant

Summary: Rating scales are commonly used to measure the symptoms of attention deficit/hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), and conduct disorder (CD). While these scales have positive psychometric properties, the scales share a potential weakness - the use of vague or subjective rating procedures to measure symptom occurrence (e. g., never, occasionally, often, and very often). Rating procedures based on frequency counts for a specific time interval (e. g., never, once, twice, once per month, once per week, once per day, more than once per day) are less subjective and provide a conceptually better assessment procedure for these symptoms. Such a frequency count procedure was used to obtain parent ratings on the ADHD, ODD, and CD symptoms in a normative (nonclinical) sample of 3,500 children and adolescents. Although the current study does not provide a direct comparison of the two types of rating procedures, the results suggest that the frequency count procedure provides a potentially more useful way to measure these symptoms. The implications of the results are noted for the construction of rating scales to measure the ADHD, ODD, and CD symptoms.

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