本文選題：高等級(jí)公路 + 開采沉陷��； 參考：《中國(guó)礦業(yè)大學(xué)》2017年碩士論文

【摘要】：高等級(jí)公路是煤礦區(qū)的重要基礎(chǔ)設(shè)施,許多礦區(qū)面臨高等級(jí)公路下壓煤開采的問(wèn)題,準(zhǔn)確預(yù)計(jì)和評(píng)估采動(dòng)變形對(duì)高等級(jí)公路的影響是進(jìn)行高等級(jí)公路下采煤的前提。本文以南屯礦區(qū)新鄒濟(jì)公路下采煤?jiǎn)栴}為研究對(duì)象,采用現(xiàn)場(chǎng)實(shí)測(cè)、理論分析和模擬研究手段,研究了采動(dòng)影響下公路移動(dòng)變形和破壞特征、采動(dòng)區(qū)公路地表與路面變形關(guān)系、采動(dòng)區(qū)公路變形破壞過(guò)程,建立了采動(dòng)區(qū)公路變形預(yù)計(jì)方法,并編程實(shí)現(xiàn)。論文研究取得如下成果:(1)地表移動(dòng)與變形傳遞至路基、路面,引起公路路面產(chǎn)生下沉、水平移動(dòng)、傾斜、水平變形等,改變了公路的幾何結(jié)構(gòu)特征;當(dāng)路面移動(dòng)與變形值超過(guò)限值時(shí),在拉伸區(qū)引起裂縫,在壓縮區(qū)產(chǎn)生路面隆起、路緣石破碎,路面破壞改變了路面的連續(xù)性,路面不平整度顯著增加,嚴(yán)重威脅了公路的安全運(yùn)行。實(shí)測(cè)結(jié)果表明,路面下沉值達(dá)到21mm,傾斜變形為0.73mm/m時(shí),路面產(chǎn)生裂縫;壓縮變形達(dá)到1.8mm/m時(shí),路面產(chǎn)生隆起。(2)針對(duì)鄒濟(jì)公路這種柔性路面,在公路路面不產(chǎn)生隆起時(shí),路面和對(duì)應(yīng)地表的移動(dòng)變形基本一致,采動(dòng)影響下路面的下沉要滯后于對(duì)應(yīng)地表下沉,路面水平移動(dòng)要大于地表水平移動(dòng)值,路面和地表之間并沒有顯著的離層發(fā)育�？梢酝ㄟ^(guò)預(yù)計(jì)地表的移動(dòng)變形值來(lái)替代對(duì)應(yīng)位置處路面的移動(dòng)與變形值。(3)針對(duì)公路動(dòng)態(tài)變形預(yù)計(jì)精度低的問(wèn)題,結(jié)合公路下采煤需要進(jìn)行變形監(jiān)測(cè)這一有利條件,提出了一種不斷融入實(shí)測(cè)數(shù)據(jù)的高精度開采沉陷動(dòng)態(tài)預(yù)計(jì)模型;針對(duì)預(yù)計(jì)模型中常用的矩形剖分方式對(duì)不規(guī)則工作面適應(yīng)度較差的問(wèn)題,開發(fā)了基于三角形剖分方法的預(yù)計(jì)程序。案例分析結(jié)果表明,融合實(shí)測(cè)數(shù)據(jù)的開采沉陷動(dòng)態(tài)預(yù)測(cè)模型預(yù)計(jì)地表最大下沉點(diǎn)的相對(duì)誤差優(yōu)于6%。
[Abstract]:High-grade highway is an important infrastructure in coal mining area. Many mining areas are faced with the problem of coal mining under high-grade highway. Accurate prediction and evaluation of the influence of mining deformation on high-grade highway is the premise of mining under high-grade highway.This paper takes the coal mining problem under Xinzou Jigong Road in Nantun Mining area as the research object, and studies the characteristics of highway movement deformation and destruction under the influence of mining, and the relationship between road surface deformation and pavement deformation under the influence of mining movement by field measurement, theoretical analysis and simulation research.In the process of highway deformation and failure in mining area, the method of highway deformation prediction in mining area is established and realized by programming.In this paper, the following results are obtained: 1) the surface movement and deformation are transferred to the roadbed, pavement, causing the road surface to sink, horizontal movement, tilt, horizontal deformation and so on, which changes the geometric structure characteristics of the highway;When the value of pavement movement and deformation exceeds the limit value, cracks are caused in the stretch zone, the road surface bulges are produced in the compression area, the road edge stone is broken, the pavement damage changes the continuity of the road surface, and the road surface irregularity increases significantly.It is a serious threat to the safe operation of the highway.The measured results show that when the pavement subsidence value is 21 mm, when the slope deformation is 0.73mm/m, the pavement cracks occur, and when the compression deformation reaches 1.8mm/m, the road surface produces a bulge. (2) for the flexible road surface of Zou Ji Gong Road, when the road surface does not have a bulge,The movement and deformation of the pavement and the corresponding surface are basically the same, the subsidence of the road surface under the influence of mining is lagging behind the corresponding surface subsidence, the horizontal movement of the road surface is larger than the value of the horizontal movement of the surface, and there is no significant development of the separated layer between the road surface and the surface.In order to solve the problem of low prediction precision of dynamic deformation of highway, we can substitute the displacement and deformation value of pavement at the corresponding position by predicting the moving deformation value of the ground surface, and combine with the favorable condition that coal mining needs to monitor the deformation under the highway.A dynamic prediction model of high precision mining subsidence is put forward, which is continuously integrated with the measured data, and the problem of poor fitness for irregular working face is pointed out in the rectangular subdivision method commonly used in the prediction model.A prediction program based on triangulation is developed.The result of case analysis shows that the relative error of the prediction model of mining subsidence dynamic prediction based on the fusion of measured data is better than that of 6 percent.
【學(xué)位授予單位】：中國(guó)礦業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD325;U418

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本文編號(hào)：1748194