Integration, Compilation, and Computer Programming for Engineering and Geological Data for the Title III Information System.
The objective of this project was to develop a computer-based information system for geotechnical data related to surface mining and reclamation. More than 1,000 tests (slake durability, direct shear, Brazilian tensile, punch shear, and ultimate and compressive strengths) were performed on coal mine overburden rocks described by the three-digit code for cored rocks by ferm and weisenfluh. As a result, baseline data for the strength and weatherability of selected overburden rocks were collected and organized by rock type and engineering test for the title III information system. Statistical methods applied to the data base were multiple linear regression, hypothesis testing, power analysis, stepwise regression, and model building. The analyses provided estimates of relationships between the engineering test results and the geologic characteristics. Statistically significant relationships were found among slake durability index, mean and standard deviation of punch shear, mean and standard deviaiton of Brazilian tensile, uniaxial compressive strength derived from the diametral and axial point-load tests, and overburden lithology.