Engineering Geology for Underground Rocks by Suping Peng

By Suping Peng

Execs and scholars in any geology-related box will locate this a vital reference. It basically and systematically explains underground engineering geology ideas, tools, theories and case experiences. The authors lay out engineering difficulties in underground rock engineering and the way to review and resolve them. The booklet specifically emphasizes mechanical and hydraulic couplings in rock engineering for wellbore balance, mining close to aquifers and different underground constructions the place influx is an issue.

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By Suping Peng

Execs and scholars in any geology-related box will locate this a vital reference. It basically and systematically explains underground engineering geology ideas, tools, theories and case experiences. The authors lay out engineering difficulties in underground rock engineering and the way to review and resolve them. The booklet specifically emphasizes mechanical and hydraulic couplings in rock engineering for wellbore balance, mining close to aquifers and different underground constructions the place influx is an issue.

Show description

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7. The geologic cross-sections showing the lithology of the strata along formation strike direction in Xinji coal mine, Huainan Coalfield. a. Cross-section in the south side of the studied area; b. Cross-section in the north side of the studied area. 3 Geological structures of sedimentary rock mass A rock usually is defined as the isotropic and homogeneous aggregation of minerals without macroscopically discontinuity. In geological engineering, most rocks are anisotropic, heterogeneous, and include different scales of discontinuities and geological structures, particularly when the size of rock engineering is large enough to contain these structures’ planes.

In this case the empirical corrections between rock strength and geophysical well log data can be used for estimation (Peng et al. 2001). These correlations usually are developed for some specific rock formations based on relationships of laboratory core tests and geophysical data. Because there are multiple choices of strength models and correlations for various rock types in different geological settings, it is necessary to understand the characteristics of the model and their range of applicability prior to utilizing them (Chang et al.

The sandstone thickness varies greatly (Fig. 7). 2 Sedimentary characteristics and strata lithology 37 coal seam is frequently found. These characteristic show that the main roof of sandstone of Seam 13-1 was created by an anastomosing river deposit (Peng and Meng 2002). The lithology and mechanical properties of sedimentary rocks are different and controlled by their sedimentary environments and facies. In the vertical direction, lithology varies cyclically, and in the lateral direction some layers in the strata are thickened, thinned, or even disappear.

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