本文選題：盤區(qū)機(jī)械化分條-上向分層充填聯(lián)合采礦法　切入點：采場參數(shù)　出處：《昆明理工大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：大紅山西礦段設(shè)計采用點柱式上向水平分層充填采礦方法進(jìn)行開采,對于點柱式充填,點柱可以有效維護(hù)頂板安全,保證了采礦過程的安全進(jìn)行。但是,點柱作為永久損失,導(dǎo)致?lián)p失率高以及點柱的留設(shè)對施工要求較高。因此既要滿足安全生產(chǎn)又要降低其損失率和貧化率成為了礦山難題。鑒于此問題,本文對點柱式上向水平分層充填采礦方法進(jìn)行改進(jìn),提出了盤區(qū)機(jī)械化分條-上向分層充填聯(lián)合采礦法,該方法在走向上將礦體劃分為盤區(qū)進(jìn)行開采,沿傾向再劃分豎分條,分為1分條和2分條,分條寬度的不同不僅影響了采場的穩(wěn)定性,同時也影響著充填成本,因此科學(xué)合理的設(shè)計兩個分條寬度,對保證采場作業(yè)安全和降低充填成本是至關(guān)重要的。本文采用FLAC 3D模擬軟件,以大紅山西礦段開采現(xiàn)狀為工程背景,對盤區(qū)機(jī)械化分條-上向分層充填聯(lián)合采礦法采場參數(shù)進(jìn)行優(yōu)化,取得了如下研究成果:(1)提出盤區(qū)機(jī)械化分條-上向分層充填聯(lián)合采礦法,解決了點柱式上向水平分層充填采礦方法需留設(shè)永久礦柱的難題;(2)應(yīng)用FLAC 3D模擬軟件,模擬1分條和2分條寬度分別為6m和6m、8m和6m、6m和8m、8m和8m條件下,膠結(jié)充填體和礦柱在整個開采過程中的應(yīng)力、位移和塑性區(qū)變化規(guī)律,得出采用各方案進(jìn)行開采時,采場始終處于穩(wěn)定狀態(tài),每個方案均能夠滿足開采的強(qiáng)度要求;(3)結(jié)合各方案充填成本進(jìn)行綜合比較,得出盤區(qū)機(jī)械化分條-上向分層充填聯(lián)合采礦法最優(yōu)采場參數(shù)為:1分條寬6m,2分條寬8m;(4)與點柱式上向水平分層充填采礦方法的工業(yè)指標(biāo)對比表明,盤區(qū)機(jī)械化分條-上向分層充填聯(lián)合采礦法在滿足安全生產(chǎn)要求的基礎(chǔ)上,提高了礦石回收率,經(jīng)濟(jì)效益較優(yōu)。本文研究意義:確保采礦安全及礦山持續(xù)生產(chǎn)的前提下,一方面提高了礦石回收率和經(jīng)濟(jì)效益,另一方面可以保證礦山安全、穩(wěn)定發(fā)展,對類似礦山開采具有較為重要的工程指導(dǎo)意義。
[Abstract]:The design of Shanxi mine section of Datong adopts the point pillar upward horizontal stratified filling mining method. For the point column filling, the point pillar can effectively maintain the roof safety and ensure the safety of the mining process. However, the point column is taken as the permanent loss. As a result of the high loss rate and the high requirement for the construction of the point column, it is difficult for the mine to meet the safety of production and reduce the loss rate and dilution rate. In this paper, the point column upward horizontal stratified filling mining method is improved, and the combined mining method of mechanized strip separation and upward stratified filling in the disc area is put forward. The mining method divides the orebody into the disk area on the strike, and then divides the vertical strip along the tendency. Divided into 1 and 2, the difference in width not only affects the stope stability, but also affects the filling cost, so the scientific and reasonable design of the two split-width, It is very important to ensure the safety of stope operation and reduce the filling cost. This paper adopts FLAC 3D simulation software, taking the mining status quo of Shanxi section of Dahong as the engineering background. This paper optimizes the stope parameters of mechanized strip separation and upward stratified filling combined mining method in the disk area, and obtains the following research results: 1) the combined mining method of mechanized strip separation and upward stratified filling in the disk area is put forward. This paper solves the problem that the permanent pillar is needed to be set up in the method of point column horizontal stratified filling mining. Using FLAC 3D simulation software, the paper simulates the conditions that the width of 1 slice and 2 slice are 6 m and 6 m and 6 m and 6 m and 8 m and 8 m, respectively, under the condition of 6 m and 6 m and 8 m and 8 m, respectively, in which the width of 1 and 2 splits is 6 m and 6 m, respectively. The variation of stress, displacement and plastic zone of cemented filling body and pillar in the whole mining process, it is concluded that the stope is always in a stable state when each scheme is used for mining. Each scheme can meet the intensity requirement of mining. The results show that the optimum stope parameters of the combined mining method of mechanized strip separation and upward stratification and filling in the disc area are as follows: (1) the width of the split strip is 6 m, the width of the second strip is 8 m / 4), and the comparison of the industrial indexes of the mining method with the point column method of upward horizontal stratification and filling shows that the optimum mining parameters are as follows:. On the basis of satisfying the requirements of safe production, the combined mining method of mechanized strip separation and upward stratification and filling in the disk area improves the ore recovery rate and the economic benefit is better. The research significance of this paper is to ensure the safety of the mining and the continuous production of the mine. On the one hand, the ore recovery rate and economic benefit are improved, on the other hand, the safety and stable development of the mine can be guaranteed, which has important engineering guiding significance for similar mining.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD853.34

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