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

  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,并對其沉陷威脅危險性進行預(yù)測分析,對西部黃土地區(qū)煤礦開采沉陷規(guī)律的研究具有重要的意義。本文以現(xiàn)有開采沉陷理論和采空區(qū)穩(wěn)定性分析方法為指導,以三道溝煤礦85201工作面一期開采區(qū)實地觀測資料及地質(zhì)地形資料為依據(jù)進行論文的撰寫。首先,根據(jù)開采過程中收集到的85201工作面觀測站相關(guān)資料,包括監(jiān)測點實測數(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,對以上資料進行整理分析并總結(jié)概括三道溝煤礦一期采空區(qū)地表移動變形規(guī)律。其次,采用解析法、回歸分析法和計算機數(shù)值模擬法對采空區(qū)地表危險性評價指標進行相關(guān)計算與結(jié)果的分析。在解析法中,采用概率積分法進行預(yù)計參數(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)缺失問題的解決辦法,對地表移動持續(xù)時間預(yù)計模型進行了線性對數(shù)擬合;在數(shù)值模擬法中,對煤層深度、煤層厚度以及工作面推進量對地表下沉的影響進行了分析研究。最后,將三種方法得到的結(jié)果相結(jié)合,對三道溝煤礦一期采空區(qū)地表沉陷危險性進行綜合預(yù)計與分析,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)境保護以及地面工程建設(shè)提出科學合理的建議。
[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.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TD327

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本文編號：1384316