Application of Geostatistics for Cleat Data Validation in Sungai Lilin, Musi Banyuasin Region, South Sumatra

Abstract

Cleat on coal seam is a slope stability controller, as well as permeability and porosity for fluidal flows. It also has become an interesting issue on coal mining, nevertheless the finite quantitative data. As a matter of facts, there is actually some available data about cleat as attributes, but this study only objecting on the orientation, cleat spacing, and cleat aperture. Cleat attributes measurement through field observation at two coalfields;Baturona and PMC in the area of Sungai Lilin, MusiBanyuasin Region. Next, those 667 faces and butt cleats were measured from 8 scanlines being analyzed using geostatistic methods. The purpose of geostatisticanalysis in this study is to see the relation between variables (cleat attributes) to evaluate data quantitatively until the normal distribution is obtained. The data filter was done as a treatment until valid data is reached through the boxplot model. Early boxplot result that almost entirely had outliers data in each seam. In fact, it is commonly seen some extreme outlier data. This suggests that outlier data filter is treated as a treatment until a normal distribution system is achieved on each cleat attribute. Identification of cleat outliers has been affected by mining activity, or due to weathering processes in the coal seams that have been exposed.

Cleat properties of the Tanjung Agung coalfield, South Sumatra Basin: implications to fluid flow

“…Cleat data acquisition uses the scanline method along the coal seam. The scanline method is used to anticipate duplication of cleat data measurements and validate face and butt cleat data collected from the field prior to further analysis [7].…”

Influence of Coal Cleats on Conical Pick Cutting Process Based on PFC

“…For the smaller radius of coal particles, the more real generated model can truly re ect the mechanical properties of coal specimens and if the radius of particles is too small, there will be too many particles to simulate efciently, and the radius range of coal mass particles is set as 1.6-2.6 mm in this paper [26]. e contact mode between coal particles is selected as the parallel bond model [27]. e density, Young's modulus of coal, and other micromechanical parameters of coal mass are shown in Table 3 [28].…”