Research On Mine Water Inrush Water Source Identification Technology Based On The Coupling Of Hydraulics And Hydrochemistry

Mine water source is one of the three major elements of mine water hazard,water source identification is an important work of coal mine water prevention and control,accurate identification of mine water source can not only guide the development of targeted water hazard prevention and control measures,avoid the occurrence of water damage or reduce water damage loss,but also can provide important support for determining the principle of mine water inrush rescue work after the occurrence of water inrush in the mine,effectively improve the rescue efficiency,so the identification of mine water surge(sudden)water source in coal mine water prevention and control,water rush rescue have an important role,significant significance.Taking the waterfilled water source of Linxi Mine as the main research object,this paper carried out the research work on the analysis of Linxi mine geology and hydrogeological conditions,the analysis of mine water chemical characteristics,the high-precision construction of standard water source sample library,the coupling method of hydraulics and water chemistry,and the establishment of numerical model.On this basis,the reservoir construction technology of water source sample subclass and the water source identification model based on the coupling of hydraulics and water chemistry are proposed,and the field application is carried out.1.Through the on-site investigation and geological data collection of Linxi Mine,the structural characteristics and hydrogeological conditions of the mine were analyzed,and the water-filled water source and water diversion channel were clarified.2.By using the hierarchical clustering method(HCA)and combining the water quality characteristics of the three types of water source samples,the subcategory division of water source samples from Qianjiaying Mine in the similar hydrogeological environment of Kaiping Coalfield and Linxi Mine was realized,and the method of building subclasses of water source samples was determined,which verified the advantages of this method and effectively improved the accuracy of mine water source identification.3.Through water chemical analysis methods such as piper three-line diagram and Schueller diagram,the hydrochemical characteristics of each aquifer water and surface water in the remining face of Linxi Mine 1021 were deeply studied,the water quality types of each water-filled water source were determined,the relationship between the water chemical characteristics and the aquifer minerals was preliminarily revealed,and the characteristics of each water source were identified but easy to misjudge.4.The numerical simulation study of the working face mining in 1021 was carried out by FLAC3 D software,and the stress field,displacement field and plastic zone distribution characteristics of the surrounding rock in the goaf area under the influence of mining were analyzed,and the development height and the failure depth of the roof water conduction fracture zone were determined,which provided support for the final determination of the and and the construction of the water source identification model.5.The hydraulic criterion of the main water hazard types is systematically summarized,a priori probability matrix construction method based on and is proposed,and a water source identification model coupled with hydraulics and hydraulics is established with prior probability as the link,and the water source of No.45 water sample is accurately identified by taking the remining face in 1021 as an example.The paper has 35 pictures,10 tables,and 105 references.