Before starting the bore work in particular area, we will undertake the entire survey of that particular area, type of sand, ground water source and quality of the water.
Ground Survey
When we start the survey work, we scrutinize the type of the sand and the type of the rock, and the water level. Especially, if saline water comes, we will distinguish the core composed of plastic rocks and the enclosing rocks surrounding it. Besides, we find a marked difference between the structure of the core and the enclosing rocks. The core bears all the features of the active dislocation of the plastic masses composing it in the upward direction, while the structure of the enclosing rocks reflects only their passive accommodation to the movement of the core The shapes of the core are characterized by a gentle arch and steep lateral surfaces. In the plan the contours of the core are not the same at different depths. The core of the fold, composed of the Devonian rock salt, in the Upper Cretaceous deposits is elongated in the north - west direction parallel to the strike of the Hercynian structures; in Paleogene deposits the core acquire the rounded contours.
The inner structure of the core is characterized by an exceptionally complicated arrangement. The plastic rocks composing the core are crumpled into narrow and compressed folds. Which can be formed only when the substances are in the state of flowing. Individual inter-layers composing these folds are greatly extended; in place however, they form complex bending, clusters, and irregular bulges. They enclose rock masses at the contact with the core are often fractured and truncated by the plastic rocks of the core. In the proximity of the contact, they have a steep form of bedding, often turned upside down or overturned. Numerous ruptures and gliding surfaces are developed within them along which individual members and riders become separated from the rocks that enclose them and follow the core in their dislocation over considerable distances. The said displacement is accompanied by the development of zones of fracture and fault breccias, which attribute to the structure of enclosing rocks in the contact zone complexity of a very high degree. These dislocations soon die out as the core becomes more remote - and at several hundred meters from the dislocated zone, they usually disappear altogether. Thus, in diaper structures two types of folds coexist: in the active core there is the development of the flow folds, whereas the rocks surrounding the core and subjected to transverse bending. Above all, the company finds out not only the type of the water, and the type of the rock and depth of ground water.