Demonstration of a subsidence prediction technique for the Illinois coal basin.
Authors
Triplett TL; Yurchak DW
Source
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
Link
NIOSHTIC No.
20024928
Abstract
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.
Links with this icon indicate that you are leaving the CDC website.
The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
You will be subject to the destination website's privacy policy when you follow the link.
CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.
For more information on CDC's web notification policies, see Website Disclaimers.
CDC.gov Privacy Settings
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.
Thank you for taking the time to confirm your preferences. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page.