Research On Mining Technology Of Unmanned Mining Test Stope In-645m Middle Section Of Sanshandao Gold Mine

The extreme conditions of deep mining have hindered the application of many traditional mining methods and processes.The high temperature,high pressure,and high humidity environment is also a huge test for the physical fitness of workers,which makes the development and utilization of deep resources must be realized from labor.The shift from mining to unmanned and intelligent mining.This research combines the unmanned mining project of metal mines under the national key research and development plan,selects the test stope in the Xishan mining area of Sanshandao gold mine,and uses the self-developed mine design system based on the data of on-site engineering geological survey,rock mechanics experiment,rock mass quality classification,etc.The structure parameters of the stope were calculated,and the size of the stope structure suitable for the engineering geological conditions of the stope was obtained.Based on this,the design of the mining technology of the test stope was completed,and the operation platform was successfully built for the unmanned mining equipment.The main contents of the research are as follows:(1)Conduct geological survey on the test stope in the middle section of-645m in the Xishan mining area,and select appropriate rock samples for rock mechanics experiments,clarify the engineering geological conditions and rock mass characteristics around the stope,and find the surrounding rock and the rock mass in which the ore body is located Level range.(2)Combining the relevant knowledge of rock mechanics,use C#language to develop the "continuous mining process design and stability analysis system".The system includes multiple modules such as rock mass classification,stope structure parameter calculation,stope stability analysis,etc.And applied the system to calculate the structural dimensions of the test stope,and obtained stope structure parameters with a length of 20m,a height of 15m,and a width of the horizontal thickness of the ore body.(3)Selecting the downward medium-deep hole for the ore body stoping,and based on the advantages of the downward medium-deep hole,the "medium-deep hole falling and subsequent filling continuous mining method" is proposed.According to the known stope size,the mining The mining standard,cutting and mining engineering of the site were designed,and the research on the mining technology of the experimental stope was completed.(4)Using the finite element analysis software FLAC3D to analyze the stope sequence,four primary selection schemes were put forward:①Sequential mining from south to north,②Sequential mining from north to south,and③Mining from south to north,④Collect one every other from north to south.By analyzing the displacement,stress and plastic zone conditions of the roof and hanging wall of each stope,the optimal stoping plan is determined from the four primary options as plan 1,that is,the final stoping plan is to stop from south to north in sequence.The research content of the thesis has successfully provided a good test platform for unmanned mining equipment,and is a bold attempt to realize unmanned mining technology for underground metal mines.