某矿深部上向分层全尾砂充填采矿技术研究

发布时间：2018-03-04 22:02

本文选题：层控型破碎顶板　切入点：深部开采　出处：《江西理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：针对某地下矿山破碎顶板层控型矿床产状复杂,现阶段开采矿体埋藏较深(600m以上)的赋存状况,以及现有开采技术条件,以尾砂充填采矿方法为研究工作中心,以安全开采、提高工效、降低成本和控制"两率"(损失率和贫化率)为目标,进行了尾砂特性及深部矿体充填采矿开采技术的分析及研究,主要研究内容有:1.利用美国热电IRIS Advantage1000等离子体发射光谱仪、英国MALVER公司MICRO-PLUS型激光衍射粒度分析仪等仪器对矿山尾砂组分、粒度等进行分析,并测定了全尾比重、松散容重、压实容重、自然安息角、孔隙率等基本物理参数。分析测定结果表明该矿山全尾砂物理力学性质符合胶结充填要求,可采用全尾砂胶结充填采矿法进行开采,不需要对尾砂进行分级处理。2.针对矿山现阶段开采深度较深,开展了全尾砂胶结充填配比优化试验及相关参数测定。通过全尾砂沉缩特性试验、充填料浆凝结时间试验、试块抗压强度试验、充填料浆输送性能试验等,其中充填料浆输送性能试验研究包括充填料浆L型管道输送试验、塌落度测定、充填其余参数的测定及计算、充填系统工艺流程分析等,分析确定了适合本矿山的充填工艺。3.进行了试验采场的回采与充填工艺试验。试验表明,该矿山可实现管道自流输送,但充填体强度略低于设计值。经分析,选矿药剂部分残留于尾矿是造成充填体强度略低的主要原因。生产实践表明,虽然充填体强度较设计值略低,但其能较好满足生产实际需要。充填采矿法可对矿山深部高地压产生的危害起到控制作用,可使矿产资源得到合理开发利用。总之,上向水平分层充填采矿法在该矿山深部试验采场试验较为成功,有效地控制了深部采场地压,保证了矿山生产安全,该技术方案科学、合理、可靠,可在该矿山推广使用,对同类矿山的生产实践具有一定的指导和借鉴作用。
[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.
【学位授予单位】：江西理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD853.34

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