本文關(guān)鍵詞：三道溝煤礦一期采空區(qū)地表沉陷危險(xiǎn)性分析　出處：《西安科技大學(xué)》2016年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 三道溝煤礦 采空區(qū) 數(shù)值模擬 回歸分析 危險(xiǎn)性

【摘要】：三道溝煤礦位于陜西省府谷縣西北部屬黃土高原地區(qū),該煤礦采高較大、煤層埋藏深度較淺、煤層上覆基巖較薄,在西部黃土礦區(qū)具有典型的代表性。探究其采空區(qū)地表沉陷規(guī)律,并對(duì)其沉陷威脅危險(xiǎn)性進(jìn)行預(yù)測(cè)分析,對(duì)西部黃土地區(qū)煤礦開(kāi)采沉陷規(guī)律的研究具有重要的意義。本文以現(xiàn)有開(kāi)采沉陷理論和采空區(qū)穩(wěn)定性分析方法為指導(dǎo),以三道溝煤礦85201工作面一期開(kāi)采區(qū)實(shí)地觀(guān)測(cè)資料及地質(zhì)地形資料為依據(jù)進(jìn)行論文的撰寫(xiě)。首先,根據(jù)開(kāi)采過(guò)程中收集到的85201工作面觀(guān)測(cè)站相關(guān)資料,包括監(jiān)測(cè)點(diǎn)實(shí)測(cè)數(shù)據(jù)、礦區(qū)地質(zhì)地形資料、煤層分布以及該煤礦其他基本特點(diǎn),對(duì)以上資料進(jìn)行整理分析并總結(jié)概括三道溝煤礦一期采空區(qū)地表移動(dòng)變形規(guī)律。其次,采用解析法、回歸分析法和計(jì)算機(jī)數(shù)值模擬法對(duì)采空區(qū)地表危險(xiǎn)性評(píng)價(jià)指標(biāo)進(jìn)行相關(guān)計(jì)算與結(jié)果的分析。在解析法中,采用概率積分法進(jìn)行預(yù)計(jì)參數(shù)的確定,并結(jié)合“三下”采煤規(guī)程選取相關(guān)系數(shù)值;在回歸分析法中,介紹了數(shù)據(jù)缺失問(wèn)題的解決辦法,對(duì)地表移動(dòng)持續(xù)時(shí)間預(yù)計(jì)模型進(jìn)行了線(xiàn)性對(duì)數(shù)擬合;在數(shù)值模擬法中,對(duì)煤層深度、煤層厚度以及工作面推進(jìn)量對(duì)地表下沉的影響進(jìn)行了分析研究。最后,將三種方法得到的結(jié)果相結(jié)合,對(duì)三道溝煤礦一期采空區(qū)地表沉陷危險(xiǎn)性進(jìn)行綜合預(yù)計(jì)與分析,并根據(jù)分析結(jié)論為礦區(qū)安全生產(chǎn)、礦區(qū)生態(tài)環(huán)境保護(hù)以及地面工程建設(shè)提出科學(xué)合理的建議。
[Abstract]:Sandaogou Coal Mine is located in the northwest of Fugu County, Shaanxi Province, which belongs to the Loess Plateau area. The mining height of this coal mine is relatively high, the coal seam buried depth is shallow, and the coal seam overlying bedrock is thin. It is typical in the loess mining area in the west of China. The law of surface subsidence in goaf is studied and the danger of subsidence threat is forecasted and analyzed. It is of great significance to study the law of coal mining subsidence in the loess region of western China. This paper is guided by the existing mining subsidence theory and the analysis method of goaf stability. Based on the field observation data and geological topographic data of the first stage mining area of 85201 face in Sandaogou Coal Mine, the paper is written. First of all. According to the relevant data collected in the mining process of 85201 face observation station, including the monitoring data, geological terrain data, coal seam distribution and other basic characteristics of the coal mine. The above data are analyzed and summarized in Sandaogou Coal Mine. Secondly, the analytic method is used to analyze the surface movement and deformation of goaf in the first stage of Sandaogou Coal Mine. Regression analysis method and computer numerical simulation method are used to calculate and analyze the risk evaluation index of goaf surface. In the analytical method, the probability integration method is used to determine the predicted parameters. The correlation coefficient value is selected according to the "three down" coal mining rules. In the method of regression analysis, the solution to the problem of missing data is introduced, and the linear logarithmic fitting of the prediction model of surface movement duration is carried out. In the numerical simulation method, the influence of coal seam depth, coal seam thickness and working face advance on the surface subsidence is analyzed. Finally, the results obtained by the three methods are combined. This paper makes a comprehensive prediction and analysis on the risk of surface subsidence in the first goaf of Sandaogou coal mine, and puts forward scientific and reasonable suggestions for the safety of production in mining area, the protection of ecological environment in mining area and the construction of surface engineering according to the conclusion of the analysis.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TD327

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本文編號(hào)：1384316