本文選題：大采高綜放 + 復(fù)合關(guān)鍵層　； 參考：《中國礦業(yè)大學(xué)（北京）》2015年博士論文

【摘要】：大采高工作面由于礦壓顯現(xiàn)劇烈、巷道變形嚴(yán)重，研究大采高工作面的覆巖移動(dòng)理論及大斷面巷道圍巖控制技術(shù)對(duì)于采礦工程具有重要意義。通過深基點(diǎn)多點(diǎn)位移計(jì)及鉆孔電視窺視法、數(shù)值模擬及理論分析，揭示了大采高工作面巷道不穩(wěn)定的破壞機(jī)理，提出了大采高工作面巖層移動(dòng)可通過復(fù)合關(guān)鍵層理論來分析計(jì)算。分析表明大采高工作面頂板周期性垮落步距分布在[9.0m,14.0m]之間，，具有正態(tài)分布特征。研究認(rèn)為大采高工作面覆巖沉降變化隨著采動(dòng)進(jìn)行而不斷變化的時(shí)間和空間動(dòng)態(tài)變化過程，把FLAC模擬結(jié)果轉(zhuǎn)化到三維Surfer軟件獲得了三維覆巖移動(dòng)規(guī)律，這可直觀獲得大采高工作面上覆巖層的全局動(dòng)態(tài)時(shí)空變形情況。錨桿支護(hù)中預(yù)應(yīng)力是個(gè)關(guān)鍵參數(shù)，對(duì)于五陽煤礦大采高工作面巷道，應(yīng)選取強(qiáng)度大、直徑大的強(qiáng)力錨桿，分析了典型工作面回風(fēng)巷變形破壞機(jī)理，提出了采用預(yù)應(yīng)力加長(zhǎng)錨固錨桿錨索支護(hù)系統(tǒng)的巷道支護(hù)設(shè)計(jì)方案，采用大采高工作面巷道錨桿動(dòng)態(tài)支護(hù)信息設(shè)計(jì)法，充分利用施工過程中提供的各類信息，實(shí)時(shí)進(jìn)行信息收集、信息分析與信息反饋，在大采高工作面巷道圍巖控制中取得良好效果。
[Abstract]:The overlying rock movement theory and the surrounding rock control technology of large-section roadway in large mining face are of great significance to mining engineering because of the severe mine pressure and the serious deformation of roadway.The failure mechanism of roadway instability in large mining face is revealed by numerical simulation and theoretical analysis by means of deep base point multi-point displacement meter and borehole television peep-view method.It is put forward that the movement of rock layer in large mining face can be analyzed and calculated by the theory of compound key layer.The analysis shows that the roof collapse distance of large mining face is in the range of [9.0m ~ 14.0m], which has the normal distribution characteristic.It is considered that the time and space dynamic change process of overburden subsidence changes with mining movement in large mining face. The FLAC simulation results are transformed into 3D Surfer software to obtain the 3D overburden movement law.The global dynamic temporal and spatial deformation of overlying strata on the face of large mining height can be obtained intuitively.The prestress is a key parameter in bolt support. For the roadway of large mining height working face in Wuyang coal mine, the strong bolt with large strength and large diameter should be selected, and the deformation and failure mechanism of return air roadway in typical working face is analyzed.The design scheme of roadway support with prestressed extended anchor bolt and anchor cable support system is put forward. The dynamic support information design method of roadway in large mining face is adopted to make full use of all kinds of information provided in the construction process.Information collection, information analysis and information feedback are carried out in real time, and good results are obtained in surrounding rock control of roadway in large mining face.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)（北京）
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD353

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