Causes of building collapse remain unknown. The absence a clear answer about the causes of deformations of buildings and structures have long pay attention to many experts. Typically, in this framework are: Mining engineers Profile, surveyors and Geophysics – People who worked in the underground mines and quarries and familiar with the concepts of the stress state of the geological environment. Most of them are inclined to think that an emergency condition of many engineering structures caused by a wrong approach for the Engineering Research and underreporting of modern geodynamic activity of the geological environment. Until recently, geologists believe that the earth's crust, except in areas of active volcanism and manifestations seismic (earthquake hazard in terms of) is at rest, ie immobile. However, at this stage with the commissioning of new measuring techniques, the use of satellite geodesy and development geophysical methods of investigation, it became apparent that the crust is constantly in motion.
Roughly speaking, the earth goes right under our feet. Displacement of the earth's surface and rock massifs have little amplitude and the eye is not noticeable, however, may have a significant impact, both on the rock mass, and on engineering structures. The mobility of the rock massifs related to their stress-strain state. The Earth's crust is constantly affected by the forces (gravity, generating a voltage on the weight of rocks and tectonic forces), resulting in geological environment is always in a state of stress. Because the rocks always overstretched, they begin to deform and break. Most often this is expressed in the formation of tectonic joints (gaps) or the displacement of blocks of rocks laid along the previously active faults.