【摘要】：溜井是地下金屬礦山礦石運(yùn)輸?shù)难屎硪�，，而主溜井的穩(wěn)定是保證礦山高效生產(chǎn)的關(guān)鍵。由于主溜井溜放礦石頻繁，井壁受礦石沖擊、磨損破壞嚴(yán)重。為保證金屬礦山主溜井連續(xù)、穩(wěn)定生產(chǎn)，必須開展主溜井內(nèi)礦石運(yùn)移及井壁磨損特征研究。金山店鐵礦主溜井溜放礦石任務(wù)重，服役時(shí)間長(zhǎng)，生產(chǎn)中主溜井井壁出現(xiàn)了不同程度的破壞，影響礦山正常生產(chǎn)。針對(duì)主溜井井壁受礦石沖擊、磨損破壞嚴(yán)重的問(wèn)題，本研究以現(xiàn)場(chǎng)調(diào)研資料為基礎(chǔ)，采用理論分析、相似試驗(yàn)和數(shù)值模擬等方法研究主溜井礦石運(yùn)移及井壁磨損特征。 （1）以散體運(yùn)動(dòng)學(xué)理論為基礎(chǔ)，計(jì)算碰撞過(guò)程的恢復(fù)系數(shù)，得到溜礦段礦石運(yùn)動(dòng)速度公式，建立平面坐標(biāo)系得到了溜礦段礦石運(yùn)移特征方程。以散體巖石力學(xué)為基礎(chǔ)，得到貯礦段井壁側(cè)壓力理論計(jì)算方法和經(jīng)驗(yàn)公式；以橢球體放礦理論為基礎(chǔ)，從定性角度揭示貯礦段礦石移動(dòng)特性分區(qū)及井壁磨損特點(diǎn)。 （2）以相似原理為基礎(chǔ)，確定了溜礦試驗(yàn)相似比，構(gòu)建了實(shí)驗(yàn)室模擬主溜井溜礦試驗(yàn)平臺(tái)，采用高速攝像裝置采集礦石運(yùn)移的動(dòng)態(tài)信息，對(duì)采集到的圖像資料通過(guò)Image Pro Plus動(dòng)態(tài)圖像分析軟件進(jìn)行分析，獲得了溜礦段礦石運(yùn)移特征方程和井壁破壞位置；確定了貯礦段放礦試驗(yàn)相似比，制作了井壁模型，制定了試驗(yàn)方案，得到了貯礦段礦石移動(dòng)特性和井壁磨損特征。 （3）根據(jù)選擇的主溜井放礦數(shù)值模擬軟件，建立了貯礦段放礦數(shù)值模型，根據(jù)數(shù)值模擬結(jié)果對(duì)貯礦段進(jìn)行了分區(qū)，得到了各分區(qū)礦石移動(dòng)特性和井壁磨損特征。 （4）基于現(xiàn)場(chǎng)調(diào)研資料，主溜井內(nèi)礦石運(yùn)移及井壁磨損特征的理論分析、相似試驗(yàn)和數(shù)值模擬等研究結(jié)果能夠相互驗(yàn)證，且與實(shí)際相符。論文研究得到了金山店鐵礦主溜井內(nèi)礦石運(yùn)移及井壁磨損特征，為礦山主溜井生產(chǎn)管理與結(jié)構(gòu)優(yōu)化提供參考。
[Abstract]:The slide well is the key point of ore transportation in underground metal mines, and the stability of the main pass well is the key to ensure the efficient production of the mine. Due to the frequent ore sliding in the main pass well, the shaft wall is severely damaged by the impact of the ore. In order to ensure the continuous and stable production of the main slide shaft in metal mine, it is necessary to study the characteristics of ore migration and wall wear in the main pass well. The main slide shaft of Jinshandian Iron Mine has heavy task and long service time, and the main slide shaft wall is damaged to some extent in production, which affects the normal production of the mine. In order to solve the problem that the main shaft wall is impacted by ore and the wear damage is serious, based on the field investigation data, this study studies the characteristics of ore migration and wall wear in the main pass shaft by theoretical analysis, similarity test and numerical simulation. The main results are as follows: (1) based on the theory of bulk kinematics, the recovery coefficient of the collision process is calculated, the velocity formula of ore movement in the ore slide section is obtained, and the characteristic equation of ore migration in the ore slide section is obtained in a plane coordinate system. Based on the theory of granular rock mechanics, the theoretical calculation method and empirical formula of sidewall pressure are obtained, and based on the ellipsoidal drawing theory, the characteristics of ore movement and wall wear are revealed qualitatively. (2) on the basis of similarity principle, the similarity ratio of ore passing test is determined, and a laboratory simulation test platform is constructed, and the dynamic information of ore movement is collected by high speed camera. Through the analysis of the collected image data by Image Pro Plus dynamic image analysis software, the characteristic equation of ore migration and the location of shaft wall failure are obtained. The similarity ratio of ore drawing test in the ore storage section is determined, the shaft lining model is made, the test scheme is established, and the characteristics of ore movement and wall wear in the ore storage section are obtained. (3) based on the selected software of ore drawing numerical simulation of main pass well, the ore drawing numerical model of the ore storage section is established. According to the results of the numerical simulation, the ore movement characteristics and wall wear characteristics of each district are obtained. (4) based on the field investigation data, the theoretical analysis, similarity test and numerical simulation of ore migration and wall wear characteristics in the main pass well can verify each other and accord with the actual situation. In this paper, the characteristics of ore migration and wall wear in the main pass well of Jinshandian Iron Mine are obtained, which provides a reference for the production management and structure optimization of the main pass shaft in Jinshandian Iron Mine.
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD521.1

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