The technology described as gob-side entry driving was adopted in the Zhaogu No. 1 mine to resolve issues pertinent mining succession tension, serious roadway deformation, and support difficulties. key parameters of coal columns must be studied ensure stable effect along-air tunneling under high stress. A calculation for vertical stress a pillar is proposed, location breaking line top plate hol...

This paper attempts to predict the surface subsidence induced by multi-seam longwall mining in PT Gerbang Daya Mandiri (GDM) underground coal mine Indonesia. Several numerical models of under various depths were built finite difference code software “FLAC3D” which was used as a tool for simulations. Effect sequence and influence lower seam firstly investigated. The angle draw (AoD) maximum (Sma...

The multiaxial Mises-Schleicher and Drucker-Prager unified (MSDPu) criterion has been shown to exhibit several specific features compared other yield failure criteria, including a nonlinear mean stress dependency, influence of the Lode angle, use independent uniaxial compressive tensile strength values absence an apex (singularity) on envelope surface in negative quadrant. However, MSDPu seldom...

A study of the large, deep-seated Rosone landslide (Italian Western Alps) is presented. A large amount of geological and geomechanical data has been collected in this area, due to the presence of various villages and man-made structures, and an automatic monitoring system was installed in December 2000. Since its installation, this system has been showing a continuous slow movement with periodi...

Using underground space to store natural gas resources is an important means by which solve emergency peak shaving of gas. Rock salt storage widely recognized due its high-efficiency and environmental protection. Damage stress concentrations inside the cavern injection during withdrawal operations throughout facility life have always been among most safety issues. Therefore, accurate evaluation...