Optimization Of Blasting Parameters Of KT6 Ore Body In Yangla Copper Mine

Yunnan Diqing Mining Development Co.Ltd.is a limited liability company invested by Yunnan Copper(Group)Co.Ltd.and Diqing Tibetan Autonomous Prefecture.Mine Deqin County is located in the northwest Tibet,although the region is rich in mineral resources,but the economic base is extremely weak,is a national poverty county.Therefore,to speed up the development and utilization of mineral resources in Yangla copper mine,it plays an important role in the construction of Yunnan Sanjiang Nonferrous Metals Resource Economic Zone and the rapid and sustainable development of poverty-stricken Tibetan areas in northwest Yunnan.At present,the main production area of Yangla Copper Mine is located in the KT6 ore body south of line 47,which is the most important factor in the design and development of KT6 ore body.Based on the research of blasting parameters optimization in KT6 orebody blasting parameters and optimization of broken rock roadway support,the field investigation of KT6 ore body in Yangla copper mine is carried out,and the rock mechanics In this paper,based on the Livingstone blasting funnel theory,the blasting funnel test scheme is put forward and the field test is carried out.Based on the actual screening and analysis of the field test results,the actual situation of the KT6 orebody and the inversion of the mesoporous blasting parameters are obtained.Five sets of hole bottom plan for simulation.Based on the analysis of the vibration propagation and the dynamic characteristics of the rock,the Sadowski regression formula was used to obtain the coefficients and the attenuation index K and a for the mine topography and geological conditions.The HHT analysis method was used to analyze the different levels And the wave velocity of the seismic wave is analyzed.The wave velocity of the rock mass is measured by the wave impedance of the rock sampling and the wave velocity in the vibration test.Make a brief description.The finite element software ANSYS/LS-DYNA is used to simulate the five sets of variable hole bottom distance scheme.The stress cloud diagram,the equivalent stress cloud and the maximum effective stress of the specific unit are analyzed by comparing the five different data And the ratio of the hole bottom parameters of the optimal scheme in the five schemes.The optimal scheme parameters are used in the field industrial test,and the rationality and scientificity of the selected parameters are verified by the analysis of the blasting effect.