發(fā)布時間：2018-11-27 19:21

【摘要】：我國煤炭資源經(jīng)歷了近幾十年的開采,淺部易采煤炭資源面臨枯竭,煤炭深部開采已成為必然趨勢。深井大斷面硐室,由于其埋藏深,斷面大,在進(jìn)行支護(hù)設(shè)計時應(yīng)綜合考慮自然因素、工程因素及人為因素的影響。硐室的開挖過程是一個與工程的應(yīng)力路徑密切相關(guān)的過程,在施工過程中,圍巖受到反復(fù)擾動,圍巖的應(yīng)力不斷發(fā)生重分布,圍巖變形也不斷改變,圍巖穩(wěn)定性受到較大影響。 論文在結(jié)合工程地質(zhì)資料與室內(nèi)試驗數(shù)據(jù)的基礎(chǔ)上,利用GTS對淮南礦業(yè)集團(tuán)張集礦二副井主排水泵房的支護(hù)方案進(jìn)行數(shù)值模擬,分析了圍巖位移場和圍巖應(yīng)力場變化規(guī)律,并確定出最佳支護(hù)方案；通過對二副井馬頭門、主排水泵房及箕斗裝載硐室等深井大斷面硐室圍巖的收斂變形進(jìn)行定期監(jiān)測分析可知,硐室圍巖收斂量較��；通過對箕斗裝載硐室鋼筋應(yīng)力監(jiān)測數(shù)據(jù)進(jìn)行分析,得出箕斗裝載硐室與井筒的連接處壓應(yīng)力最大,在襯砌設(shè)計時必須增加該部位的支護(hù)強(qiáng)度。 論文把張集礦二副井硐室群作為一個開放、動態(tài)的系統(tǒng),研究施工順序、開挖與支護(hù)方式等因素的動態(tài)響應(yīng)規(guī)律,獲得了自然和人為因素與深井連接硐室群圍巖穩(wěn)定性之間的內(nèi)在規(guī)律。論文成果對解決深井連接硐室群可靠支護(hù),有效預(yù)防大硐室破壞,確保煤礦生產(chǎn)安全,有著較為重要的指導(dǎo)意義。
[Abstract]:The coal resources of our country have experienced the exploitation in recent decades, the shallow and easy mining coal resources are faced with exhaustion, the deep mining of coal has become an inevitable trend. Because of its deep buried depth and large section, the influence of natural factors, engineering factors and human factors should be taken into account in the design of support. The excavation process of the chamber is a process closely related to the stress path of the engineering. During the construction process, the surrounding rock is repeatedly disturbed, the stress of the surrounding rock is continuously redistributed, the deformation of the surrounding rock is constantly changed, and the stability of the surrounding rock is greatly affected. On the basis of engineering geological data and laboratory test data, this paper uses GTS to simulate the supporting scheme of the main drainage pump house in the second auxiliary shaft of Zhangji Mine, Huainan Mining Group, and analyzes the variation law of displacement field and stress field of surrounding rock. And determine the best support scheme; Through the periodic monitoring and analysis of the surrounding rock deformation of the large section chamber in deep wells, such as Maotou door of the second auxiliary well, main drainage pump room and skip loading chamber, it is known that the convergence amount of surrounding rock in the chamber is relatively small. By analyzing the stress monitoring data of steel bar in the skip loading chamber, it is concluded that the pressure stress at the junction between the skip loading chamber and the shaft is the largest, and the support strength of this part must be increased in the design of lining. In this paper, the chamber group of the second auxiliary shaft in Zhangji Mine is regarded as an open and dynamic system, and the dynamic response law of construction sequence, excavation and supporting method is studied. The inherent law between natural and human factors and the stability of surrounding rock mass of deep well connection chamber group is obtained. The results of this paper are of great significance to solve the problem of reliable support of deep well connecting chamber group, effectively prevent the destruction of large chamber and ensure the safety of coal mine production.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD354

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