Tectonic Development Characteristics Of Xuzhuang Coal Mine And Its Control On Water Inrush From Coal Floor

The problem of mine water damage in the safe production process of coal resources has always been one of the main research topics in the coal industry,and geological structure is an important factor affecting mine water damage.Most mine water inrush accidents are closely related to geological structure.Therefore,the correct evaluation of the development characteristics of the geological structure of the mine and the further study of the control effect of the geological structure of the mine on the water bursting can provide a useful reference for the prediction and evaluation of the risk of water inrush from the mine.It is very important for the prevention and control of mine water damage.Realistic meaning.This paper takes Xuzhuang Coal Mine in Datun Mining Area as the research object,based on the mine exploration and production disclosure data,using geological analysis,mathematical statistics,laboratory test and theoretical analysis to systematically analyze the development characteristics of the mine structure and quantitatively evaluate the mine structure.The complexity was quantitatively evaluated,and the formation process of the mine tectonic system was discussed.Combined with the characteristics of mine water bursting,the relationship between the mine structure and the water bursting was analyzed,and the control effect of the mine structure on the water bursting was revealed.The results have an important guiding role in the prevention and control of mine water damage.The main achievements and understandings are:1.The fault characteristics were evaluated from the combination characteristics,fault properties,occurrence and scale of the fault structure.The specific characteristics are as follows: the fault is most developed with the NE trend;the normal fault is the main fault,with the basement-mantle type and ladder.Fractal tectonic styles such as shingling structure,inverted fault,and smooth fault;the fold structure is relatively undeveloped,and the orientation has near EW and NE directions;the distribution of magmatic rocks in the mine has obvious regularity,and it has a good correspondence with the fault zone and its weak influence.2.The numerical values of the fractal dimension,fault strength and deformation coefficient of the fold were calculated.The spatial distribution law were analyzed.The quantitative development characteristics of mine fracture and fold were studied.Basedon the theory of multi-source information fusion,the factors were selected.The above single factor was used as the evaluation index.The weighting value of each index was determined by the independent weight coefficient method.The quantitative evaluation model of structural complexity based on the coupling of GIS and independent weight coefficient method was established to evaluate the complexity of mine structure in the study area.3.Based on the analysis of regional tectonic evolution,combined with the geological structure properties and spatial distribution characteristics of each stage of Xuzhuang Mine,the Xuzhuang mine structural system was divided and the formation process of Xuzhuang mine structural system was analyzed.4.The relationship between the distribution of water bursting points and the structural complexity degree was summarized.The main performances are as follows:the water bursting points are mainly distributed in the large fault of the mine field and the intersection of multiple faults;the flood of large water volume of the water bursting points also distributed in the area with high degree of fault development;and the influence of the fault structure water storage space on the mine water bursting was pointed out.5.The current ground stress field of the mine was tested by AE method.The maximum horizontal principal stress of the mine was 12.39 MPa,the minimum horizontal principal stress was 6.23 MPa,and the maximum horizontal principal stress direction was northwest-south-east.The reason why the mine exposes the northeast-oriented fault without water was analyzed,which reflects the indirect control of the current stress field on the water bursting.Figure [42] Table [12] Reference [82]...