五沟煤矿地质构造规律分析与研究

发布时间：2018-02-22 06:00

本文关键词： 断裂构造灰色综合模糊评判定量评价复杂等级划分　出处：《安徽理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：五沟煤矿地质构造复杂,为了实现安全高效开采,对五沟煤矿进行地质构造复杂程度定量评价是极有必要的.本文通过勘探资料、掘进资料和回采资料等的分析,对五沟煤矿的地质构造特征包括大中型断层和小断层的分布特征、褶曲构造发育特征、构造组合形式、控煤规律和矿井形成构造期次及构造应力场进行了分析研究,通过运用灰色模糊综合评判法对五沟矿井地质构造进行了定量评价,取得了以下成果： (1)矿区断层以正断层发育为主,大中型断层中,正断层占95%,并且落差较大,分布整个矿井,逆断层占5%,落差较小,散乱的分布在矿井中。小断层走向和倾向方向分布总体较为分散,推断其受到了多期应力的作用。褶曲构造主要延伸方向为NW向。煤系地层走向总体呈波状起伏。断层分布具有成组及伴生性、等距性和成带性。井田总体为断裂构造控煤,且以伸展断裂控煤构造为主,挤压断裂控煤构造较少。 (2)通过分析构造形成期次与构造应力场,得出五沟矿井地质构造为多期运动的产物。 (3)对矿井内的含有测井曲线的钻孔进行了解译,并把解译出来的构造煤厚度和井下的观察进行了对比分析,对矿井10煤煤层的煤体结构进行了解释,得出构造煤受断层和褶皱影响明显；构造煤厚度大的地方往往断裂分维值和褶皱平面变形系数较大,这也显示了地质构造对煤层煤体结构的影响。 (4)从褶曲、断层、构造煤等方面,系统地分析了矿井地质构造特征,在综合对比分析的基础上,确定了构造复杂程度定量评价指标,即：断层密度、断层强度、断裂分维值、褶曲平面变形系数、构造煤厚度；运用灰色模糊综合评判方法,对矿井地质构造发育程度进行了定量评价得出：10煤层构造复杂程度以中等和复杂为主。
[Abstract]:The geological structure of Wugou coal mine is complex. In order to realize safe and efficient mining, it is necessary to quantitatively evaluate the complexity of geological structure in Wugou coal mine. Through the analysis of exploration data, excavation data and mining data, etc., it is necessary to carry out quantitative evaluation of the geological structure complexity degree of Wugou coal mine. The geological structural characteristics of Wugou coal mine include the distribution characteristics of large and medium faults and small faults, the characteristics of fold structure development, the form of structural assemblage, the rules of coal control, the formation stages of coal mines and the tectonic stress field. By using the method of grey fuzzy comprehensive evaluation, the geological structure of Wugou mine is evaluated quantitatively, and the following results are obtained:. The faults in mining area are mainly developed by normal faults. Of the large and medium faults, normal faults account for 95%, and the drop is large. The whole mine is distributed, the reverse fault accounts for 5%, and the drop is relatively small. Scattered distribution in the mine. The distribution of small fault strike and inclined direction is generally scattered, It is inferred that it is affected by multistage stress. The main extension direction of fold structure is NW direction. The overall strike of coal measure strata is undulating and undulating. The distribution of faults is organized and associated, equidistant and zonation, and the coal is controlled by fault structure in general. Moreover, the extensional fault controlling coal structure is the main one, while the extrusion fault controlling coal structure is less. 2) based on the analysis of tectonic formation stage and tectonic stress field, it is concluded that the geological structure of Wugou mine is the product of multi-period movement. In this paper, the boreholes with log curves in the mine are interpreted, the thickness of the interpreted tectonic coal and the underground observation are compared and analyzed, and the coal body structure of the coal seam 10 in the mine is explained. It is concluded that tectonic coal is obviously affected by faults and folds, and that where the thickness of tectonic coal is large, the fractal dimension of faults and the deformation coefficient of fold plane are larger, which also shows the influence of geological structure on coal body structure in coal seam. (4) from the aspects of fold, fault and tectonic coal, this paper systematically analyzes the geological and structural characteristics of mine, and on the basis of comprehensive comparative analysis, determines the quantitative evaluation indexes of structural complexity, that is, fault density, fault strength, fracture fractal dimension, etc. Fold plane deformation coefficient, thickness of tectonic coal and grey fuzzy comprehensive evaluation method are used to quantitatively evaluate the development degree of geological structure in coal mine. It is concluded that the structural complexity of seam 10 is mainly medium and complex.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD163.1

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