程潮鐵礦殘礦合理開(kāi)采方案研究
本文選題:程潮鐵礦 切入點(diǎn):殘礦回收 出處:《武漢科技大學(xué)》2015年碩士論文 論文類(lèi)型:學(xué)位論文
【摘要】:過(guò)去主要采富棄貧、采易棄難,丟棄了很多有用礦產(chǎn)資源,隨著礦產(chǎn)資源的需求增加和采選技術(shù)的進(jìn)步,要求我們更大限度地回收殘礦資源。殘礦一般所處的地質(zhì)條件比較復(fù)雜,,因此在開(kāi)采過(guò)程中常常會(huì)遇到很多困難,同時(shí)對(duì)殘礦資源的開(kāi)采是否可行也需要進(jìn)行進(jìn)一步的論證。本論文的研究課題主要是為解決程潮鐵礦東區(qū)塌陷區(qū)殘礦的安全回收問(wèn)題而提出,為了模擬計(jì)算結(jié)果的準(zhǔn)確性,主要完成了以下研究工作: 第一,本文結(jié)合礦山開(kāi)采技術(shù)條件,從經(jīng)濟(jì)、技術(shù)和安全的角度選用11項(xiàng)主要影響因素作為評(píng)價(jià)的指標(biāo),采用未確知測(cè)度理論對(duì)采礦方案進(jìn)行優(yōu)選;第二,根據(jù)礦山開(kāi)采現(xiàn)狀,建立三維數(shù)值模型,對(duì)礦區(qū)殘礦進(jìn)行模擬開(kāi)采,分析殘礦回收情況下地表變形情況對(duì)攔洪壩、防洪港和井下主采區(qū)的影響,以確定出殘礦合理的安全開(kāi)采范圍;第三,選取典型勘探線剖面為研究對(duì)象,建立數(shù)值模擬模型,應(yīng)用有限元法進(jìn)行計(jì)算,分析在不同保安礦柱厚度情況下采場(chǎng)安全情況,以確定合理的保安礦柱厚度;第四,根據(jù)殘礦回收過(guò)程中可能存在的一些安全因素,結(jié)合數(shù)值模擬的計(jì)算結(jié)果,提出殘礦回收過(guò)程中的安全防治措施和建議。 本論文研究結(jié)果表明,嗣后充填采礦方法為最優(yōu)的開(kāi)采方案,殘礦21號(hào)礦體、殘礦3號(hào)礦體和-250m~-160m水平殘礦2號(hào)可以開(kāi)采,對(duì)于-160m~-100m水平的殘礦2號(hào)礦體應(yīng)該嚴(yán)格按照開(kāi)采要求來(lái)進(jìn)行開(kāi)采,對(duì)于殘礦1號(hào)礦體建議暫時(shí)不予開(kāi)采,同時(shí)開(kāi)采中應(yīng)留取10m厚的保安礦柱,采用未確知測(cè)度理論和數(shù)值模擬的結(jié)果與實(shí)際情況比較吻合,所得到的研究成果對(duì)類(lèi)似礦山進(jìn)行殘礦回收具有一定的參考意義,對(duì)程潮鐵礦進(jìn)行殘礦安全回收具有一定的指導(dǎo)意義。
[Abstract]:In the past, many useful mineral resources were discarded because they were mainly rich and poor, easy to exploit and difficult to abandon. With the increasing demand for mineral resources and the progress of mining and sorting technology, We are required to recover the remaining mineral resources to a greater extent. The geological conditions in which the residual minerals are generally located are more complicated, so they often encounter many difficulties in the process of mining. At the same time, it is necessary to further demonstrate whether the mining of residual ore resources is feasible. The research topic of this paper is mainly to solve the problem of safe recovery of residual ore in the eastern subsidence area of Chengchao Iron Mine, and to simulate the accuracy of the calculation results. The following research work has been completed:. First, according to the technical conditions of mining, 11 main influencing factors are selected as the evaluation index from the angle of economy, technology and safety, and the unascertained measure theory is adopted to optimize the mining scheme. According to the present situation of mining, a three-dimensional numerical model is established to simulate the mining of residual ore in mining area, and the influence of surface deformation on flood dam, flood control port and underground main mining area under the condition of residual ore recovery is analyzed. In order to determine the reasonable safe mining scope of residual ore. Thirdly, select typical exploration line section as research object, establish numerical simulation model, use finite element method to calculate, analyze the safety situation of stope under different thickness of safety pillar. In order to determine the reasonable safety pillar thickness and 4th, according to some safety factors that may exist in the process of residual ore recovery, combined with the results of numerical simulation, the safety prevention measures and suggestions in the process of residual ore recovery are put forward. The research results of this paper show that the subsequent filling mining method is the best mining plan, the residual ore body 21, the residual orebody 3 and the residual ore at -250m ~ 160m level can be mined. For the residual ore body of -160 m ~ 100 m level, the No. 2 ore body should be mined strictly in accordance with the mining requirements, the No. 1 ore body of the residual mine should not be mined for the time being, and the safety pillar with a thickness of 10 m should be reserved in the mining process. The results of unascertained measurement theory and numerical simulation are in good agreement with the actual situation. The results obtained from the study have a certain reference significance for the recovery of residual ore in similar mines. It has certain guiding significance for the safe recovery of residual ore in Chengchao 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(lèi)號(hào)】:TD861.1
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