煤矿巷道快速掘进中支护工艺研究

发布时间：2018-05-30 17:49

本文选题：临时支护 + 巷道掘进　；参考：《西安科技大学》2017年硕士论文

【摘要】：一直以来影响煤矿开采效率与作业人员安全的主要问题主要为煤矿采掘中的临时支护问题。不合理的煤矿井下支护极大程度上地威胁了作业人员与设备的安全,对煤矿矿井的安全高效生产造成了很大影响。究其根本是由于现有的支护工艺与掘进工艺并不匹配。因此有必要对支护工艺进行改进以适应现有的掘进工艺,而支护工艺的改进主要是通过对支护装备的设计要求来实现的。根据煤矿巷道的地质条件以及掘进条件,形成对支护设备结构以及零部件一系列的支护要求,从而对支护工艺进行改进以达到适应掘进工艺,提高井下作业效率,保证煤矿井下作业安全的目的。根据现有掘进工艺与支护工艺的不足之处,分析了现有的掘进工艺与支护工艺,指出了现有临时支护设备的缺点。提出了一种适应现有掘进工艺的新型跨机式临时支护设备,并对设备的整体结构与各零部件提出了一系列的设计要求。根据煤矿开采现状,对临时支护设备的整体结构、各组成零部件以及动力系统进行了较为具体的分析与选型以适应现有的掘进要求。确定了临时支护设备整体结构以及各组成部件的基本参数,根据弹性力学理论建立了巷道顶板静力学和动力学的模型并对临时支护设备进行了井下实际作业情况的受力分析与结构自身的受力验算。利用机械模拟软件建立了新型临时支护设备的模型,并且对模型的主要受力构件进行了应力应变数值模拟分析,对受力构件进行了强度和刚度的校核,为未来工业化设计的可行性提供了强有力的理论依据。
[Abstract]:The main problems affecting the efficiency of coal mining and the safety of workers are the temporary support in coal mining. Unreasonable underground support greatly threatens the safety of workers and equipment, and has a great impact on the safe and efficient production of coal mines. The fundamental reason is that the existing supporting technology and tunneling technology do not match. Therefore, it is necessary to improve the support technology to adapt to the existing tunneling technology, and the improvement of the support technology is mainly achieved through the design requirements of the supporting equipment. According to the geological condition and tunneling condition of coal mine roadway, a series of support requirements for supporting equipment structure and parts are formed, and the supporting technology is improved in order to adapt to the tunneling technology and improve the efficiency of underground operation. The purpose of ensuring the safety of underground operation in coal mine. According to the shortcomings of the existing tunneling technology and supporting technology, the existing tunneling technology and supporting technology are analyzed, and the shortcomings of the existing temporary supporting equipment are pointed out. In this paper, a new type of temporary support equipment is proposed, which is suitable for the existing tunneling technology, and a series of design requirements for the whole structure of the equipment and the parts and components are put forward. According to the present situation of coal mining, the whole structure, components and power system of temporary support equipment are analyzed and selected in order to meet the requirements of the existing excavation. The whole structure of temporary support equipment and the basic parameters of each component are determined. Based on the theory of elastic mechanics, the statics and dynamics models of roadway roof are established, and the stress analysis of the temporary supporting equipment and the checking calculation of the structure itself are carried out. The model of new temporary support equipment is established by using mechanical simulation software, and the stress and strain numerical simulation analysis of the main force member of the model is carried out, and the strength and stiffness of the stress member are checked. It provides a strong theoretical basis for the feasibility of industrial design in the future.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD353

【参考文献】