本文選題：層控型破碎頂板　切入點：深部開采　出處：《江西理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：針對某地下礦山破碎頂板層控型礦床產(chǎn)狀復(fù)雜,現(xiàn)階段開采礦體埋藏較深(600m以上)的賦存狀況,以及現(xiàn)有開采技術(shù)條件,以尾砂充填采礦方法為研究工作中心,以安全開采、提高工效、降低成本和控制"兩率"(損失率和貧化率)為目標(biāo),進(jìn)行了尾砂特性及深部礦體充填采礦開采技術(shù)的分析及研究,主要研究內(nèi)容有:1.利用美國熱電IRIS Advantage1000等離子體發(fā)射光譜儀、英國MALVER公司MICRO-PLUS型激光衍射粒度分析儀等儀器對礦山尾砂組分、粒度等進(jìn)行分析,并測定了全尾比重、松散容重、壓實容重、自然安息角、孔隙率等基本物理參數(shù)。分析測定結(jié)果表明該礦山全尾砂物理力學(xué)性質(zhì)符合膠結(jié)充填要求,可采用全尾砂膠結(jié)充填采礦法進(jìn)行開采,不需要對尾砂進(jìn)行分級處理。2.針對礦山現(xiàn)階段開采深度較深,開展了全尾砂膠結(jié)充填配比優(yōu)化試驗及相關(guān)參數(shù)測定。通過全尾砂沉縮特性試驗、充填料漿凝結(jié)時間試驗、試塊抗壓強(qiáng)度試驗、充填料漿輸送性能試驗等,其中充填料漿輸送性能試驗研究包括充填料漿L型管道輸送試驗、塌落度測定、充填其余參數(shù)的測定及計算、充填系統(tǒng)工藝流程分析等,分析確定了適合本礦山的充填工藝。3.進(jìn)行了試驗采場的回采與充填工藝試驗。試驗表明,該礦山可實現(xiàn)管道自流輸送,但充填體強(qiáng)度略低于設(shè)計值。經(jīng)分析,選礦藥劑部分殘留于尾礦是造成充填體強(qiáng)度略低的主要原因。生產(chǎn)實踐表明,雖然充填體強(qiáng)度較設(shè)計值略低,但其能較好滿足生產(chǎn)實際需要。充填采礦法可對礦山深部高地壓產(chǎn)生的危害起到控制作用,可使礦產(chǎn)資源得到合理開發(fā)利用�？傊�,上向水平分層充填采礦法在該礦山深部試驗采場試驗較為成功,有效地控制了深部采場地壓,保證了礦山生產(chǎn)安全,該技術(shù)方案科學(xué)、合理、可靠,可在該礦山推廣使用,對同類礦山的生產(chǎn)實踐具有一定的指導(dǎo)和借鑒作用。
[Abstract]:In view of the complex occurrence of broken roof strata-controlled deposit in an underground mine and the existing mining technical conditions, the mining method of tailings filling is regarded as the research center and the safe mining is carried out in view of the present situation of mining ore bodies buried deeper than 600m. In order to improve the working efficiency, reduce the cost and control the "loss rate and dilution rate", the characteristics of tailings and the mining technology of filling in deep orebody are analyzed and studied. The main research contents are as follows: 1. The composition and particle size of mine tailings are analyzed by means of thermoelectric IRIS Advantage1000 plasma emission spectrometer and MALVER MICRO-PLUS laser diffraction particle size analyzer, and the specific gravity and loose bulk density of the tailings are measured. The basic physical parameters, such as compaction bulk density, natural resting angle, porosity and so on, are analyzed and measured. The results show that the physical and mechanical properties of the whole tailings meet the requirements of cemented filling, and the whole tailings cemented filling mining method can be used for mining. There is no need to classify tailings. 2. In view of the deep mining depth at the present stage of the mine, the optimization test of cemented filling ratio and the determination of relevant parameters are carried out. Through the experiment of setting characteristic of the whole tailings, the test of setting time of the filling slurry is carried out. The compressive strength test of the test block, the transport performance test of the filling slurry, and so on. The experimental research on the transport performance of the filling slurry includes the L-type pipeline transportation test of the filling slurry, the determination of the collapse degree, the determination and calculation of the other parameters of the filling. By analyzing the process flow of filling system, the filling technology suitable for this mine is analyzed and determined. 3. The test of stoping and filling technology of test stope is carried out. The experiment shows that the pipeline self-flow transportation can be realized in this mine. However, the strength of the filling body is slightly lower than the designed value. After analysis, the main reason for the slightly lower strength of the filling body is the residue of the mineral concentrate in the tailings. The production practice shows that although the strength of the filling body is slightly lower than the designed value, the strength of the filling body is slightly lower than the designed value. However, the method of filling mining can control the harm caused by high ground pressure in the deep part of the mine and make the mineral resources reasonable development and utilization. The method of upward horizontal stratified filling mining has been successfully tested in the deep test stope of the mine, effectively controlled the pressure of deep mining site and ensured the safety of mine production. The technical scheme is scientific, reasonable and reliable, and can be popularized and used in the mine. It has certain guiding and referential function to the production practice of similar mines.
【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD853.34

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