The initiation, propagation, coalescence and failure mode of brittle jointed rock mass influenced by fissure water pressure have always been studied as a hot issue in the society of rock mechanics and engineering. In order to analyze the damage evolution process of jointed rock mass under fracture water pressure, a novel numerical model on the basis of secondary development in fast Lagrangian a...

Geological storage is an important concept for high-level radioactive waste (HLW) disposal, and detailed studies are required to protect the environment from contamination by radionuclides. This paper presents a series of geomechanical studies on the site selection for HLW disposal in the Alxa area of China. Surface investigation in the field and RQD analyses on the drill cores are carried out ...

Abstract Rock anchors are used to stabilise large scale infrastructures. Failure of rock could threaten the stability and lead severe economic social consequences. The design is based on four principal failure modes, which breakage steel tendon, tendon-grout interface failure, grout-rock mass around anchor. current dimensioning methods uncertain due limited knowledge bond strength failure. meth...

Empirical design of support system at the Tunnel 6 Jakarta – Bandung high-speed railway was based on Basic Quality (BQ) system, which had not been adopted in Indonesia. This research carried out to better understand rock mass quality tunnel construction site by comparing determined BQ that two more popular classifications, namely Geological Strength Index (GSI) and Rock Mass Rating (RMR). Surfa...

Geophysical methods for local rock burst prediction are currently being developed along two lines: improving recording equipment and data processing methods. Progress in developing is constrained by the lack of informative prognostic models that describe condition mass, process mass fracturing, phenomena can substantiate choice both criteria test parameters give an estimate time remaining until...

Geochemical research into volcanic rocks often involves isotopic analysis of whole rock powders. The method of Deniel and Pin (Anal. Chim. Acta, 2001, 426, 95-103) for simultaneous isolation of strontium and lead using extraction chromatography via Sr spec resin was therefore adapted into a straightforward procedure for Sr and Pb isotope ratio determination by multi-collector inductively couple...

Some of the geotechnical parameters used in the analysis may not be accurately measured directly from laboratory tests due to effects of sample disturbance and errors of tests. The back analysis or the observational method are thus often applied to determine the representative and/or dominant strength parameters based on field observations in practice. Based on the Hoek-Brown failure criterion,...