The Fractal Geometry Study Of Fault System In The Urban District Of Fushun City

Faults have an important impact on cities engineering geology stability as a very common and complex geological phenomena of the nature. Some faults has been subjected to faults attention in regional structure stability evolution of some region as it plays an important role. As a result of a variety of geological and their role in the formation of the fault system, most are in a complex non-linear, and irregular state. Rather than traditional methods witch could give some qualitative research about this fault system the fractal theory provided an effective method of the quantitative study of fault .An increasing number of studies have shown that the distribution and the geometrical feature of fault system has obvious fractal structure, fractal geometry theory is applied to the study of fault system in the actual geological significance.Fushun city, witch located in the Hunhe River fault zone and on the different geological structure of the interface between body weak parts, with complex geological conditions. Due to the long-term disturbance of Coal mining activities in Fushun city, some of the main faults may reactivate the part of Hunhe River fault zone .That the forces of nature combined with the interaction of human activities, the geological disasters continue to increase the frequency and damage, leading to increasing damage, increasing treatment costs. This frequent geological disasters constraining the revitalization and the development of old industrial bases, a serious threat to the life and property safety in Fushun city. The old areas of Fushun, has been formed two large-scale open pit mining and the area of a wide range of underground mined-out area, so as to continuously induced ground subsidence, landslides, ground fissures, mining-induced earthquakes and other geological disasters.This article attempts to scope mainly faults of Fushun City witch belong to the Hunhe faulr system as the research object. Based on the exploration and analysis of fault system and the fractal dimension of the relationship in Fushun City we try to evaluate the engineering geology stability of this city in different zones. In this paper, Fushun City fault system fractal model is established. As a large fault system Fushun City fracture is divided into three sub-fault systems. In the research of the large fault system and the three sub-fuault systems, concluded as follows:1. In the research area the result of fractal calculation and its relevant check indicated that fault system had the very good statistic self-similarity and fractal feature. The fractal dimension of the large fault system is largest. Fault line through the study area fractal dimension and its associated test calculated that the fault zone and Statistics Department has a good self-similarity and fractal features, fractal dimension calculated the overall region's largest. The Fault system in southern city fractal dimension is the largest and the Fault system in northern city fractal dimension ia the smallest in the fractal dimension of sub-fault system. Consequence with correspondence to the spot investigation declared that fractal value could be considered as an aggregative indicator for quantitatively assessing the complexity degree and the activity of fracture.2. The large fractal dimension of Fushun City fault system slightly larger than the value of 1.5, less than 1.8. Shows that faulted structure is relatively complexed and have important impact on the city's engineering geological stability. In the three sub-fault system, the fractal dimension of the Fault system in southern city fault system is 1.502, the other fractal dimensions of fracture are less than 1.5. However, due to their different topography, groundwater, rock and soil types, as well as the impact of human engineering activities, the same fractal dimension in the same region, the geological engineering stability are different.3. Fushun City fracture within the scope of the system in the smaller scales (10 km-0.1 km).The correlation coefficient R were greater than 0.9. fractal dimensions are different in regions of Fushun City. The geological meaning of the fractal dimension D contained in of the difference should be further improved and modified compared to previous larger scale (10 km-1 km) of fault system.Due to limited data, the research of fractal geometry is just on the fault trace of the plane structure. Because the lack of actual projects and experimental samples, the failure of fault gouge and the roughness of fault have no in-depth study in aspects of fractal geometry, to be subsequently carried out in further exploration.Fracture system fractal dimension reflects the degree of fault system growth and complexity, it can be seen as a a quantitative index about structural characteristics of fault system. However, due to fracture of the complexity of the system and its relationship to the inherent relationship between the fractal has not been more in depth research, the fractal dimension in different regions can not be taken as the level of complexity and degree of development in fracture system.To some extent, the fractal dimension value can only be regarded as a region characterized by fault system evaluation. Therefore, the fractal fracture study of the system is often limited to a particular area, which should be the most reasonable and effective. Usually the formation of fault system has experienced an extremely complex process. As a result of the current restrictions on exploration means to obtain information on the fault system is very limited, while the information also includes a considerable element of speculation. How to search for information in the real characteristics of fracture systems has been the direction of future efforts.