Groundwater Effect Boundary And Water Level Change Law Simulation Experiment Under The Effect Of Ore Cluster Mining

In recent years,With the increasing demand of coal resources.Coal production increased sharply,causing a series of mining area groundwater environmental problems emerged,Main cash for the mining area are ground water levels fall,Wells springs dried up and residents' drinking water.After analyzing its reason,mainly because of coal mining fissure evolution,the structure of the aquifer,Resulting in significant changes in the regional groundwater flow field.Study on groundwater formation evolution and groundwater in the material,energy,and the transfer of solute elements and transportation researching,Reveals the groundwater circulation law,objective understanding of groundwater cycle for reasonable development of water resources,water resources management has significant and far-reaching significance.This research topics are in the study area for data collection,Fully understand the researching in the area to hydrogeologe conditions,on the basis of combing after analyzed the mining area water cycle change rule,similar material simulation experiment research status at home and abroad.The test in changzhi basin of upper coal seam coal core K8 aquifer as the prototype,Based on the similarity principle,the use of 0.1 ~ 0.25 mm loose quartz sand as similar material,simulation of the main working bed,the thickness of the aquifer and groundwater anisotropy,Made miniature model according to geometry similarity constant,guarantee model and the initial conditions and boundary conditions of similar cases,the simulation of coal seam caving laminar flow field after water cut change on the influence of water level and groundwater boundary.After the application of numerical simulation on the sand tank simulation test results verified the fitting,the results show that sand tank simulation test results are true and correct,as well as numerical simulation and provides the reliable theory basis,Control group under the effect of ore mining boundary and groundwater level change rule,it is concluded that mining fissure development regularities and group of aquifer in the process of ore mining spatial structure change rule.