本文關(guān)鍵詞： 廣場煤柱 條帶充填開采 膏體充填工藝 地表變形分析　出處：《華北理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：開灤荊各莊礦經(jīng)過三十余年高強(qiáng)度開采,除了工業(yè)廣場煤柱外煤炭資源幾近枯竭。按照規(guī)劃停產(chǎn)后的礦井將作為礦業(yè)系統(tǒng)相關(guān)專業(yè)學(xué)習(xí)和參觀教育的基地,所以,一方面工業(yè)廣場區(qū)域主要井巷設(shè)施和主要建筑物必須得到長期有效的保護(hù),以滿足今后正常使用;另一方面工業(yè)廣場2400萬噸保護(hù)煤柱也要經(jīng)濟(jì)安全回收。因此,基于荊各莊礦井煤層賦存、開采技術(shù)條件以及建構(gòu)筑物的保護(hù)要求,優(yōu)化設(shè)計(jì)既能保證建筑物的安全使用,又能提高煤炭的開采率,對實(shí)現(xiàn)開灤荊各莊礦井轉(zhuǎn)型有重要意義。論文研究以荊各莊礦工業(yè)廣場煤柱為背景,通過理論分析、現(xiàn)場調(diào)研、數(shù)值模擬以及實(shí)驗(yàn)相結(jié)合的研究方法,通過對工業(yè)廣場的地質(zhì)條件開采技術(shù)條件以及原有區(qū)域開采地表觀測站獲得的數(shù)據(jù)統(tǒng)計(jì)分析,結(jié)合工業(yè)廣場建構(gòu)筑物保護(hù)要求,對工業(yè)廣場的外圍煤柱進(jìn)行全采設(shè)計(jì);對內(nèi)部煤柱進(jìn)行了開采設(shè)計(jì),設(shè)計(jì)出四個(gè)符合現(xiàn)場的開采方案,對方案的安全性和穩(wěn)定性進(jìn)行分析,確定荊各莊工業(yè)廣場煤柱煤層群的開采采用9煤和12-2煤充填條帶開采技術(shù);同時(shí),對煤柱條帶充填開采變形預(yù)計(jì)分析,即采用概率積分法對地表及井筒進(jìn)行分析,工廣區(qū)域的地表變形的計(jì)算結(jié)果均在要求的范圍內(nèi),對方案四煤柱開采用FLAC軟件數(shù)值模擬,從水平位移、垂向位移、水平應(yīng)力以及垂向應(yīng)力這幾個(gè)方面進(jìn)行分析,得出的結(jié)果和概率積分法相一致,符合安全要求;對采空區(qū)進(jìn)行膏體充填工藝設(shè)計(jì),包括從地表面到井底采空區(qū)的整個(gè)系統(tǒng)過程的總工藝流程,并對這個(gè)過程中的各個(gè)充填子系統(tǒng)進(jìn)行了符合實(shí)際的設(shè)計(jì),對膏體充填原材料進(jìn)行配比研究,即煤矸石、粉煤灰、水泥、水以及添加劑,經(jīng)過充填環(huán)管實(shí)驗(yàn)確定其參數(shù)比例,并對攪拌成的膏體進(jìn)行可靠性能分析,其結(jié)果符合要求,并且通過對充填后的地表進(jìn)行預(yù)測。
[Abstract]:After more than 30 years of high-intensity mining in Jinggezhuang Mine in Kailuan, the coal resources in addition to the coal pillar in the Industrial Plaza are nearly exhausted. The mine after the planned shutdown will be used as a base for studying and visiting the relevant majors of the mining system, so, On the one hand, the main shaft and roadway facilities and main buildings in the industrial square area must be protected for a long time in order to meet the normal use in the future; on the other hand, 24 million tons of protected coal pillars in the industrial square must also be recovered economically and safely. Based on the occurrence of coal seam in Jinggezhuang mine, mining technical conditions and the protection requirements of building structures, the optimized design can not only guarantee the safe use of buildings, but also improve the mining rate of coal. It is of great significance to realize the transformation of Jinggezhuang mine in Kailuan. Based on the coal pillar of Jinggezhuang mine industrial square, the research method of combining theoretical analysis, field investigation, numerical simulation and experiment is studied in this paper. Based on the technical conditions of mining geological conditions of industrial square and the statistical analysis of the data obtained from the original regional mining observation station, combined with the requirements of building structure protection of industrial square, the whole mining design of the coal pillar around the industrial square is carried out. The mining design of inner coal pillar is carried out, four mining schemes which accord with the field are designed, the safety and stability of the scheme are analyzed, and the mining technology of 9 coal and 12-2 coal filling strip is determined for the mining of coal pillar coal seam group in Jinggezhuang Industrial Plaza. At the same time, the prediction and analysis of mining deformation of coal pillar strip filling, that is to say, the probability integration method is used to analyze the surface and wellbore, and the calculation results of surface deformation in Gongguang area are all within the required range. The fourth coal pillar was numerically simulated by FLAC software, and analyzed from the aspects of horizontal displacement, vertical displacement, horizontal stress and vertical stress. The results are consistent with the probability integration method and accord with the safety requirements. The paste filling process design for goaf is carried out, including the total process flow of the whole system process from the ground surface to the bottom goaf, and the practical design of each filling subsystem in this process is carried out. The proportioning of paste filling raw materials, that is, coal gangue, fly ash, cement, water and additives, was studied. The ratio of parameters was determined by the experiment of filling loop pipe, and the reliable performance of the paste was analyzed, and the results met the requirements. And through the prediction of the filling surface.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD823.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 王家臣;楊勝利;;固體充填開采支架與圍巖關(guān)系研究[J];煤炭學(xué)報(bào);2010年11期

2 李樹志;;礦山測量研究所近六十年來發(fā)展回顧與展望[J];礦山測量;2013年06期

3 賈元旦;對條帶采煤法采出率提高的探討[J];山西煤炭;2003年01期

4 熊春雷;衛(wèi)星遙感技術(shù)在新疆烏恰縣煤炭資源調(diào)查中的應(yīng)用[J];西部探礦工程;2004年04期

相關(guān)碩士學(xué)位論文 前2條

1 劉剛;條帶開采煤柱靜動(dòng)態(tài)穩(wěn)定性研究[D];西安科技大學(xué);2011年

2 趙建文;錫礦山似膏體泵送充填工藝方案研究[D];中南大學(xué);2012年

，

本文編號(hào)：1499424