Karst Hydrogeology And Hydraulic Parameter Analysis Of A Field Region In Guizhou

With the development of national economic construction,more and more large-scale construction should be carried out in carbonate area,and in the event of karst area,it may cause a series of engineering accidents and damage to the environment,at the national advocate of environmental friendly construction under the background of the Sinopec in Guizhou carbonate areas of Zhijin the proposed plant as the study area.Through the elaboration of project field of karst development characteristics and hydrogeological condition of the karst detailed analysis,to grasp the environmental conditions of groundwater,promote the construction development and groundwater environment adaptation,decrease caused by the groundwater environmental hydrological and geological hazards have important referential significance,for engineering design,planning to provide a scientific basis for decision.This paper mainly from the following several aspects of the system research:(1)Through the test results and field survey,in the analysis of the system,based on the hydrogeological conditions of the study area,divided the groundwater circulation alternately district actively-East and groundwater circulation alternately active area-west two hydrogeological unit,and a more detailed expounds the two single element of the hydrological and geological characteristics.(2)Based on tracer testing results in the study area in qualitative analysis.At the same time,revealing the memory of the study area in the three ZK01-ZK06,ZK07-ZK10,ZK13-ZK15 advantage karst seepage channel.It is concluded thatF2-1fault F5,water conductivity,F4 fault guide to result in a worse water relative;(3)The program Qtracer2 on three preponderance flow path in the groundwater over water channel structure parameters and hydraulic parameters of quantitative analysis:Karst in the ZK01-ZK06 line over water channel volume 136.43m~3,karst channels over the water area of 3.4*10~6m~2,karst in the ZK07-ZK10 line over water channel deposits 235m~3 and karst channel over water area 3.37*10~5m ~2,the front line of karst ZK13-ZK15 over water channel volume 553m~3 and karst channel over water area is 5.9*10~5m~2.According to the channel Reynolds number and Froude number,ZK01-ZK06,ZK07-ZK10,ZK13-ZK15 along the groundwater flow state are slow speed turbulent flow,which belongs to the turbulent flow zone.(4)Establishing the conceptual model for the groundwater system,based on the groundwater simulation software,on the basis of the existing underground water level dynamic data,set up a large scale natural situation model,after checking a model and the natural seepage field analysis and prediction.Preliminary study on engineering construction interaction between surface water and groundwater environment and,and puts forward the suggestions of the prevention and control measures.To sum up,the study area with Dalongjing-Kanniuba-Fangbeihou as the boundary of the east karst development is stronger than the west,with groundwater cycles more positive,in terms of engineering construction,not conducive to build well karst development area,therefore,the geological conditions for construction site's location is superior to the east.