Demonstration of a Subsidence Prediction Technique for the Illinois Coal Basin

Details

• Personal Author:
  Triplett TL ; Yurchak DW
• Description:
  This paper presents Bureau of Mines research on modifying the influence function method to predict subsidence, as well as techniques to predict the resultant damages. According to theory, the influence function technique must incorporate an intensity function to represent the relative significance of the causes of subsidence. This paper shows that the inclusion of a reasonable intensity function increases the accuracy of the technique, then presents the required functions for case studies of longwall coal mining subsidence in Illinois, and subsidence produced by ground water withdrawal in California. Then the paper discusses a method to predict the resultant strain from a simply measured site constant and calculated ground curvatures. Finally, the paper presents a technique to predict the damages caused by subsidence, particularly structural damage to residential foundations. This technique relates the values of bending and twist in the footing to the formation of cracks. The use of a Mohr's circle of curvature to predict damage then is introduced. Finally, the use of the influence function subsidence prediction technique to calculate the curvature values for the Mohr's circle is demonstrated, and hazard maps above typical longwall panels are created. [Description provided by NIOSH]
• Subjects:
  Case Reports Coal Coal Mining Environmental Exposure Environmental Health Environmental Pollution Geology Mining Occupational Health Safety
• Keywords:
  Case-studies Coal-mining Environmental-factors Environmental-hazards Ground-control Ground-stability
• Series:
  Mining Publications
• Publisher:
  U.S. Bureau of Mines
• Document Type:
  Text
• Genre:
  Proceedings ; Abstract
• Place as Subject:
  District of Columbia ; Minnesota ; OSHA Region 3 ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  TCRC - Twin Cities Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  49
• NIOSHTIC Number:
  nn:20024928
• Citation:
  Abstract Book, U.S. Department of the Interior Conference on the Environment and Safety, April 24-28, 1995. Washington, DC: U.S. Bureau of Mines, 1995 Apr; :49
• Federal Fiscal Year:
  1995
• Peer Reviewed:
  False
• Source Full Name:
  U.S. Bureau of Mines
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:40cf9b95d21f521722d79620cde07f905fe03670cda3f070da7d1882868300ba71b5d38e0545711d08045ed6e5cf50fe24c9e607024c499caebb23f0e652f709
• Download URL:
  https://stacks.cdc.gov/view/cdc/220872/cdc_220872_DS1.pdf
• File Type:
  [PDF - 739.87 KB ]