【摘要】：非線性理論在當今社會發(fā)展中發(fā)揮著越來越重要的作用,本文以非線性系統(tǒng)理論中的突變理論為工具,研究了煤礦下鉆孔在荷載作用下的突變性,通過實驗分析了預帶鉆孔煤樣單軸壓縮數(shù)據(jù)中突變性存在類型,以及孔周圍的突變規(guī)律,并給出了煤礦鉆孔工人基于突變理論指導下的科學管理建議。文章從定性、定量兩個方面,分析了煤礦鉆孔外部荷載對孔的受力情況。通過屈服區(qū)荷載,彈性區(qū)荷載以及區(qū)段煤層的荷載公式構建孔在荷載作用下的能量函數(shù),然后借助泰勒公式,截尾,進而得到尖點突變模型。理論分析了突變函數(shù)根的存在情況,得出鉆孔中突變性存在與荷載的關系。接著,文章對煤粉、粉煤灰以及水以質量比11:2:7配制而成的預帶鉆孔煤樣,采用DDL200電子萬能試驗機以單軸壓縮方式進行實驗,得到應變數(shù)據(jù)。通過MATLAB數(shù)學軟件繪制多個時間段應變數(shù)據(jù)的網(wǎng)狀圖,并找到數(shù)據(jù)變化劇烈的區(qū)域,通過對數(shù)據(jù)進行函數(shù)擬合,得出了能滿足突變模型條件的函數(shù)式。通過具體對比尖點突變模型和蝴蝶突變模型的擬合優(yōu)度,選取了更適合的蝴蝶突變模型分析了應變數(shù)據(jù),得出了預帶鉆孔煤樣應變數(shù)值發(fā)生突變的時間點,以及函數(shù)根的變化情況,并分析了鉆孔周圍的穩(wěn)定性變化。此外,本文為了研究鉆孔突變性帶來的安全影響,通過調查問卷的形式,調查了鉆孔礦工局部心理狀態(tài),發(fā)現(xiàn)了鉆孔突變性帶來的安全問題,會使礦工心理產(chǎn)生突變反應,這表現(xiàn)在鉆孔礦工辭職和努力工作之間的選擇,為了說明這一問題,文章運用尖點突變模型的方法論述了鉆孔礦工努力工作與辭職之間的心理活動,并提出消除鉆孔礦工心理突變性的建議。本文通過運用突變理論模型,為煤礦鉆孔中突變性應用提供思路,并給人們了解煤礦鉆孔,分析預帶鉆孔煤樣突變規(guī)律,解決鉆孔礦工心理活動突變性提供了理論支持,從而為更好的分析鉆孔,運用理論理解煤礦鉆孔突變問題奠定基礎。
[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.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD79

【參考文獻】

相關期刊論文 前10條

1 袁永才;李術才;李利平;雷霆;王升;孫柏林;;山嶺隧道塌方風險評價理論與方法及工程應用[J];中南大學學報(自然科學版);2016年07期

2 何忠明;劉森峙;胡慶國;劉清芳;;基于尖點突變理論的路堤填筑下伏溶洞頂板穩(wěn)定性研究[J];中南大學學報(自然科學版);2016年07期

3 李春閣;楊長德;王鵬;王志強;;實現(xiàn)傾斜方向連續(xù)卸壓的留煤柱開采保護層技術[J];煤炭工程;2016年07期

4 譚毅;郭文兵;趙雁海;;條帶式Wongawilli開采煤柱系統(tǒng)突變失穩(wěn)機理及工程穩(wěn)定性研究[J];煤炭學報;2016年07期

5 楊琛;姚凱文;;基于突變理論的水庫移民后期扶持實施效果評價[J];水力發(fā)電;2016年06期

6 董愛華;孔林娟;杜靜靜;;基于突變理論信息融合的故障電弧檢測方法[J];電力系統(tǒng)及其自動化學報;2016年05期

7 劉小平;;基于突變理論的小煤窯采空區(qū)失穩(wěn)判據(jù)及應用[J];煤田地質與勘探;2014年04期

8 趙瑜;張建偉;院淑芳;;基于突變理論的地下廠房圍巖穩(wěn)定性安全評價[J];巖石力學與工程學報;2014年S2期

9 劉少虹;;動靜加載下組合煤巖破壞失穩(wěn)的突變模型和混沌機制[J];煤炭學報;2014年02期

10 徐巖;胡斌;王元元;蔣國銀;;基于隨機尖點突變理論的心理契約研究[J];管理科學學報;2014年04期

相關博士學位論文 前3條

1 林小如;反脆性大城市地域結構的目標準則和理論模式[D];華中科技大學;2015年

2 張業(yè)民;突變理論在巖土與結構工程中的若干應用[D];大連理工大學;2008年

3 郭健;突變理論在復雜系統(tǒng)脆性理論研究中的應用[D];哈爾濱工程大學;2004年

相關碩士學位論文 前1條

1 張海龍;采煤沉陷中突變現(xiàn)象分析及預測[D];西安科技大學;2009年

，

本文編號：2375355