基于突变理论的煤矿钻孔地物人突变性研究

发布时间：2018-12-12 22:36

【摘要】：非线性理论在当今社会发展中发挥着越来越重要的作用,本文以非线性系统理论中的突变理论为工具,研究了煤矿下钻孔在荷载作用下的突变性,通过实验分析了预带钻孔煤样单轴压缩数据中突变性存在类型,以及孔周围的突变规律,并给出了煤矿钻孔工人基于突变理论指导下的科学管理建议。文章从定性、定量两个方面,分析了煤矿钻孔外部荷载对孔的受力情况。通过屈服区荷载,弹性区荷载以及区段煤层的荷载公式构建孔在荷载作用下的能量函数,然后借助泰勒公式,截尾,进而得到尖点突变模型。理论分析了突变函数根的存在情况,得出钻孔中突变性存在与荷载的关系。接着,文章对煤粉、粉煤灰以及水以质量比11:2:7配制而成的预带钻孔煤样,采用DDL200电子万能试验机以单轴压缩方式进行实验,得到应变数据。通过MATLAB数学软件绘制多个时间段应变数据的网状图,并找到数据变化剧烈的区域,通过对数据进行函数拟合,得出了能满足突变模型条件的函数式。通过具体对比尖点突变模型和蝴蝶突变模型的拟合优度,选取了更适合的蝴蝶突变模型分析了应变数据,得出了预带钻孔煤样应变数值发生突变的时间点,以及函数根的变化情况,并分析了钻孔周围的稳定性变化。此外,本文为了研究钻孔突变性带来的安全影响,通过调查问卷的形式,调查了钻孔矿工局部心理状态,发现了钻孔突变性带来的安全问题,会使矿工心理产生突变反应,这表现在钻孔矿工辞职和努力工作之间的选择,为了说明这一问题,文章运用尖点突变模型的方法论述了钻孔矿工努力工作与辞职之间的心理活动,并提出消除钻孔矿工心理突变性的建议。本文通过运用突变理论模型,为煤矿钻孔中突变性应用提供思路,并给人们了解煤矿钻孔,分析预带钻孔煤样突变规律,解决钻孔矿工心理活动突变性提供了理论支持,从而为更好的分析钻孔,运用理论理解煤矿钻孔突变问题奠定基础。
[Abstract]:Nonlinear theory is playing a more and more important role in the development of society today. In this paper, the catastrophe of borehole under coal mine under load is studied with the catastrophe theory of nonlinear system theory as a tool. The types of mutation in the uniaxial compression data of pre-drilled coal samples and the mutation law around the boreholes are analyzed experimentally, and the scientific management suggestions based on the catastrophe theory for coal drillers are given. From qualitative and quantitative aspects, the paper analyzes the stress of borehole under external load in coal mine. The energy function of the hole under load is constructed by the yield zone load, elastic zone load and the load formula of the coal seam in the section. Then, by means of Taylor formula, the truncation model is obtained and the cusp catastrophe model is obtained. The existence of catastrophe function root is analyzed theoretically, and the relationship between catastrophe and load in borehole is obtained. Then, the paper uses the DDL200 electronic universal testing machine to carry out the experiment on the coal sample of pre-belt drilled coal which is made up of pulverized coal powder, fly ash and water at 11:2:7 mass ratio, and obtains the strain data by uniaxial compression method. The mesh diagram of strain data in many time periods is drawn by MATLAB software, and the region where the data changes dramatically is found. Through the function fitting of the data, the functional formula which can satisfy the condition of the sudden change model is obtained. By comparing the fitness of the cusp mutation model with the butterfly mutation model, the more suitable butterfly mutation model is selected to analyze the strain data, and the time point when the strain value of the pre-drilled coal sample mutates is obtained. The variation of the function root and the stability around the borehole are analyzed. In addition, in order to study the safety effect of borehole mutation, through the form of questionnaire, this paper investigates the local psychological state of drilling miner, and finds out the safety problem caused by drilling mutation, which will make miner psychological mutation reaction. This is manifested in the choice between the resignation and hard work of the drilling miners. In order to illustrate this problem, the psychological activities between the hard work and resignation of the drilling miners are discussed by using the cusp mutation model. The suggestion of eliminating psychological mutation of drilling miners is put forward. By using the catastrophe theory model, this paper provides ideas for the application of catastrophe in coal drilling, and provides theoretical support for people to understand coal drilling, analyze the law of coal sample mutation in pre-drilled holes, and solve the catastrophe of psychological activities of drilling miners. Thus, it lays a foundation for better analysis of boreholes and the use of theory to understand the sudden change of boreholes in coal mines.
【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】：TD79

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