Comparing Study On Exploration And Mining Information Of Deep Orebody In Qianshan South Of Tongshan Copper Deposit

This paper is based on the research project of " Comparing Study on Exploration and Mining Information of Deep Orebody in Qianshan South of Tongshan Copper Deposit ".On the basis of the achievements Detailed exploration,infrastructure exploration and Mining stage of Deep Orebody in Qianshan South of Tongshan Copper Deposit,the ore body shape change,thickness change,floor displacement,grade change and reserve error are selected as the Comparing Study on Exploration and Mining Information of Deep Orebody in Qianshan South of Tongshan Copper Deposit,and the classification of exploration types,exploration means,exploration methods and exploration network selection during the geological exploration are analyzed.The rationality of.The 3D ore body model is established by 3DMine technology,and the law of borehole deflection is summarized.The main results of this paper finally obtained as follows:(1)The 3D ore body mode is carried out for the detailed investigation of the ore body and the exploration and delimitation of the ore body in the capital construction,and the spatial distribution of the ore body is understood,which provides the basis for the analysis of the deviation of the drilling hole in the detailed investigation.(2)Comparison of capital construction exploration and detailed investigation: the error of ore volume and metal volume is large,the exploration resource reserve is significantly reduced compared with the detailed investigation resource volume,reaching-52.77% and-53.63% respectively,and the area error is also-44.57%,but the grade error rate is only 1.44%,combining the above-mentioned high thickness error rate(-88.19%),low area coincidence rate(60.12%),high area error rate(-44.47%),and high shape distortion rate.(At the same time,the rock body between the 16-17 lines discovered in the infrastructure exploration intersects,resulting in the discontinuity of the ore body,which has a huge impact on the exploration resource reserves,resulting in a metal volume error rate of-53.63%.Therefore,it is considered that the overall scale of the ore body is not fully controlled during the detailed investigation of the 4 # ore body,and the local control level is not enough.(3)Comparison of capital construction exploration and mining: the area coincidence rate is 85.91%,the shape distortion rate is 12.96%,and the floor displacement error is 1.274 m.The curve connects the estimated resource reserves of ore body,the mixed circle estimation and the exploration estimation,and the values are relatively close.Therefore,it is considered that the overall scale control of the ore body is acceptable and the local control degree is not enough during the exploration of 4 # ore body.(4)According to the sum of five main geological factor type coefficients,i.e.the scale of main ore body,the shape and internal structure of main ore body,the influence degree of deposit structure,the thickness stability degree of main ore body and the distribution uniformity degree of useful components,the exploration type is determined.The sum of five geological factor type coefficients in the middle section of-388 ~-613 is 1.9,and the exploration type is classified as class II.Therefore,in the stage of detailed investigation and exploration,it is appropriate to divide the exploration type into the second exploration type according to the specifications,but the thickness of ore body in the local section of the deposit is small and the shape is complex and changeable,so it is difficult to accurately delineate the ore body with the main network degree and means,so the network degree encryption control should be adjusted according to the specific situation.(5)Geological phenomena vary in different sections,and the shape of the same ore body between the two projects can not be accurately described.Influenced by the backward early inclinometer and insufficient accuracy,the inclinometer data is not accurate,and there is no actual measurement data to demonstrate the borehole deflection.According to the existing data,the statistical results of the ore body area coincidence rate,shape distortion rate and the displacement of the roof and floor,it is speculated that the borehole constructed in the detailed survey has the phenomenon of deviation and deviation.(6)Based on the 3D ore body mode of mining and cutting production section,the borehole inclination data are deduced,and the borehole deviation rules of three sections are summarized.