Experimental Study On The Mode Of Water Conduction In Fracture Zone Filling Media

In the process of mine production,most of the water inrush accidents are related to the water conduction in the fault zone.It is of great importance to study the influencing factors of water conduction in fractured zone for preventing and controlling the occurrence of water inrush accidents.In this paper,the influence factors of water conduction in the fracture zone are divided into three aspects,one is that hydraulic action leads to the permeability and conductivity of the fracture zone,the two is the change of the water conductivity of the fracture zone under the influence of the mining activities,and the three is the control effect of the lithologic composition of the fracture zone filling medium on the water diversion of the fracture zone.Based on theoretical analysis,similar material experiments and numerical simulation,the influence factors of water conduction in fracture zone are studied in this paper.On the basis of fracture structure,lithology and water rationality,the basic types of fracture structure are understood and the lithologic characteristics of fracture zone filling medium are analyzed,and the Weakening Mechanism and failure law under the action of permeable flow are also studied.In view of the lack of conditions and means of objective research,similar materials have been developed by similar experiments in this paper,which is the experimental object of this paper.According to the difference of the permeability characteristics of the fault zone,the fault zone filling medium is divided into three types of breccia filling medium,dynamic sheet rock filling medium and mudstone filling medium.According to its lithologic characteristics,the suitable material is selected and the similar material is developed to meet the characteristics of the medium rock.The effect of water pressure on the water conductivity of fracture zone was studied by comparing the water absorption experiment to study the effect of water pressure on the water conductivity of the fracture zone.The influence of the water on the water conduction of the fracture zone was studied by the uniaxial compression contrast experiment.The influence of the main component content in the similar material on the characteristic parameters of the related water conduction is analyzed,and the influence of the lithologic composition of the fracture zone filling medium on the water diversion of the fracture zone is studied.