Guangxi Huanjiang Xiajin Mine Deep Roadway Combined Support Technology Applied Research

With the growing demand for coal resources and the increasing strength of the mining,Coal mining gradually shifted from shallow mining to deep mining. However, the geological environment of resources deep mining is very complex, makes deep roadway stability under the influence of the high stress, high ground temperature, high osmotic pressure and strong mining interference becomes difficult to control, support technology in deep roadways put forward higher requirements.Guangxi Huanjiang Xiajin coal mines has entered the stage of deep mining,the deep roadway deformation facing increasingly serious,the number of roadway repair greatly increased, the development of the mine has seriously hampered.More importantly, the the roadway piece bold stable security risks, constantly threatened by the mine’s normal production.Therefore, the system to carry out deep this mine roadway support technology trials and research, proposed for mine roadway support in the technical and economic programs, it is very urgent and necessary."Based on the theoretic knowledge which consists of engineering rock mechanics,ngineering geology and numerical calculation and so on,through the methods such as indoor rock mechanics test,on-site engineering geological survey,on-site live original situ stress measurements,numerical simulations and theoretical analysis,Determine the rock mechanics parameters of mine the coal mining areas of the Xiajin and the optimal joint planesand the classification of rock,clear the size and direction of the the Xiajin coal mine original ground stress,analysis Xiajin mine deep tunnel project conditions.Analysis to determine the rock basic mechanics and geological conditions suitable for two support.Simulated two kinds of support, numerical analysis of the effect of the support, combined with the economic analysis of the two kinds of support, determine the Xiajin mines under the support program.According to the proposed kinds of support,Support design of the Xiajin mine roadways of return air,In order to understand the change of in displacement of the surrounding rock and supporting, the proposed mine pressure monitoring design.Compound Supporting Technology of the Xiajin mine deep roadway is played a guiding significancetunnel to the construction of digging deep and support,And it has greater practical significance to the technological progress and economic efficiency of mining production.