【摘要】：煤炭開采引起的地表沉陷問題越來越受到重視,特別是黃土覆蓋礦區(qū),其地貌復(fù)雜,地表為厚黃土層所覆蓋,其開采沉陷規(guī)律具有特殊性,傳統(tǒng)的概率積分預(yù)計(jì)模型不能很好地適用于黃土礦區(qū)。針對(duì)不同地質(zhì)條件,開發(fā)一個(gè)有效實(shí)用的開采損害預(yù)計(jì)分析系統(tǒng)具有重要的意義。結(jié)合對(duì)常規(guī)條件下的開采沉陷研究和對(duì)黃土礦區(qū)雙層介質(zhì)理論預(yù)計(jì)模型的研究,對(duì)不同地質(zhì)條件下的開采沉陷預(yù)計(jì)方法進(jìn)行了探討。同時(shí),利用開采沉陷理論及土力學(xué)原理,推導(dǎo)出了地表開采裂縫產(chǎn)生所需要的臨界拉伸水平變形值,以及開采裂縫深度的預(yù)計(jì)公式�；谝陨侠碚撗芯�,在VS2010平臺(tái)中利用C#語言,開發(fā)了一套開采損害預(yù)計(jì)分析系統(tǒng)軟件,實(shí)現(xiàn)了開采沉陷預(yù)計(jì)和開采損害分析工作的自動(dòng)化和可視化。本系統(tǒng)能夠預(yù)計(jì)生成各項(xiàng)移動(dòng)變形量的二維曲線、等值線圖、移動(dòng)下沉盆地的三維模擬圖,且能夠進(jìn)行地表開采損害分析以及采動(dòng)裂縫的范圍預(yù)計(jì)。除此之外本系統(tǒng)還設(shè)計(jì)有針對(duì)黃土礦區(qū)的預(yù)計(jì)分析功能。結(jié)合預(yù)計(jì)系統(tǒng)的特色,進(jìn)行了實(shí)例研究分析,首先利用實(shí)測(cè)數(shù)據(jù)求得移動(dòng)變形預(yù)計(jì)參數(shù),然后在所開發(fā)的開采損害預(yù)計(jì)分析系統(tǒng)中,對(duì)地表的各項(xiàng)移動(dòng)變形值及分布進(jìn)行了研究,對(duì)工作面開采的充分性進(jìn)行了實(shí)驗(yàn)探討,模擬了移動(dòng)下沉盆地三維效果。并利用系統(tǒng)的裂縫預(yù)計(jì)分析功能,自動(dòng)生成了裂縫的預(yù)計(jì)分布范圍。實(shí)驗(yàn)研究不僅驗(yàn)證了裂縫預(yù)計(jì)理論的正確性和所開發(fā)預(yù)計(jì)系統(tǒng)的實(shí)用性,也為黃土礦區(qū)的開采沉陷問題提供了一個(gè)實(shí)際工程的典型實(shí)例,為其他相關(guān)研究者和工程實(shí)施者提供參考。
[Abstract]:More and more attention has been paid to the problem of surface subsidence caused by coal mining, especially the loess mining area, whose geomorphology is complex and the surface is covered by thick loess soil, so the law of mining subsidence has its particularity. The traditional probabilistic integral prediction model is not suitable for loess mining area. According to different geological conditions, it is of great significance to develop an effective and practical analysis system for mining damage prediction. Combined with the study of mining subsidence under conventional conditions and the theoretical prediction model of double-layer medium in loess mining area, the prediction methods of mining subsidence under different geological conditions are discussed. At the same time, based on the mining subsidence theory and soil mechanics principle, the critical tensile horizontal deformation value needed for surface mining cracks and the prediction formula of mining crack depth are derived. Based on the above theoretical research, a software of mining damage prediction system is developed by using C # language in VS2010 platform, which realizes the automation and visualization of mining subsidence prediction and mining damage analysis. The system can generate 2-D curves, isoline maps, three-dimensional simulated maps of moving and sinking basins, and can analyze the damage of surface mining and predict the range of mining fractures. In addition, the system also designed for the loess mining area prediction analysis function. Combined with the characteristics of the prediction system, an example study and analysis is carried out. First, the parameters of the displacement deformation prediction are obtained by using the measured data, and then in the developed mining damage prediction analysis system, The value and distribution of surface movement and deformation are studied, the sufficiency of mining face is discussed experimentally, and the three-dimensional effect of moving subsidence basin is simulated. The predicted distribution range of fractures is automatically generated by using the function of fracture prediction and analysis of the system. The experimental study not only verifies the correctness of fracture prediction theory and the practicability of developed prediction system, but also provides a typical example of practical engineering for mining subsidence in loess mining area. To provide reference for other relevant researchers and project implementers.
【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】：2015
【分類號(hào)】：TD327

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