Study On Workingface Over Discontinuous Roof Theory And Production Research

The coal industry is a high-risk industries, the safe production of coal enterprises is crucial for this business.As we all know, coal mine safety regulations, security system can not be said is not perfect, imperfect, We have one with the blood of thousands of miners brothers in exchange for Coal Mine Safety Regulations, we have improved coal mine safety management regulations, we have detailed the safety and quality standardization.In addition, with the advances in modern mines in Shanxi Province digital improvement of mine management, making the decline of accident rate and one million tons of mortality in a straight line, In spite of this coal mine accidents are still common, and caused heavy casualties,Such as Henan Yima Coal Industry Group Co., Ltd. in2011on the11th Qianqiu coal mine mining accident rockburst caused. Summing up the appeal, these incidents are not mine equipment is advanced, not mine management did not do a good job. But because Complex structure of the mine geology and many uncertain factors, when disaster strikes without warning, and ultimately pose a serious threat to the coal production, and ultimately lead to a major accident.This requires a large number of mining, as well as universities and research institutes to put forward a more realistic theory and production technology, to enhance the safety of coal mining from the theoretical and technical level. For the Hongtong mining area in the historical development of the special geological formation of the complex geological conditions of coal mining. This article uses a field investigation, data collection, theoretical analysis, engineering analogy and other methods. In this paper a systematic analysis of the history of the Hongdong mine geology and the serious damage of the the Hongdong mining area rock in this process, I have two under the cascading rock beam theory in the theoretical analysis, pass the rock beam angle theory and the two theories of appeal on the basis of instability in the form of a combination of coal mining grouting practice in the engineering practice to improve the theoretical analysis. I have done in this paper are as follows:1、 I detailed Hongdong Mining Area Geology formation process, through the geological history of Linfen basin, from the Pliocene period, during the fourth quarter period of Linfen basin state of motion as well as historical records, seismic activity.Then I analyzed the characteristics of the the Hongdong mine geological fracture. By Fenhe Coking Coal Group, the three cross-river coal mining and prepared based on the measured tunneling Huipodi coal geological ledger。2、 Through the engineering analogy, analysis, control other mines in the case of discontinuous face of production, I described the three cross-river coal production technology characteristics and at2-5041Lane, the characteristics of the carbon column, and thus affect the production of mine safety in the paper.3、 After the study of underground pressure the classical theory, I created a new theoretical analysis method. I analyed of voussoir beam theory and pass the rock beam theory comprehensively. Studying of two theories of Appeal and the nature of the rock mechanics of stress and strain, I created a static force field under the cascading rock beam theory; I study of two theories of Appeal and the nature of the rock mechanics of stress and strain, I created a static force field under the cascading rock beam theory; I created mine pressure data measured under dynamic load transfer rock beam angle theory.4、 Based on the finite element software I simulated the stress field distribution of the fault structure, and then through the cascading rock beam theory and passed the rock beam angle theory analysis of the mechanical structure of the fault structure and instability in the form.The combination of these studies, I have done two studies they are not continuous roof of the stope theory and production practices, I analyzed combine the Hongdong mine the actual situation. Based on the findings I proposed a continuous roof of the mechanical structure and approach.