【摘要】：工業(yè)廣場(chǎng)保護(hù)煤柱開(kāi)采是許多資源將要枯竭的煤礦所面臨的問(wèn)題,為保證開(kāi)采過(guò)程中井筒與地表建筑物的安全有必要對(duì)工廣煤柱開(kāi)采技術(shù)進(jìn)行研究。本文在前人研究的理論基礎(chǔ)上以?shī)A河礦工業(yè)廣場(chǎng)保護(hù)煤柱為研究對(duì)象,通過(guò)礦區(qū)實(shí)測(cè)資料處理、工業(yè)廣場(chǎng)煤柱開(kāi)采方案研究以及數(shù)值模擬等多個(gè)方面的綜合研究,為夾河礦工業(yè)廣場(chǎng)煤柱開(kāi)采提供了合理的開(kāi)采方案,同時(shí)也能為其他礦區(qū)類似地質(zhì)條件下的工業(yè)廣場(chǎng)保護(hù)煤柱開(kāi)采提供參考。論文主要工作和內(nèi)容如下:(1)對(duì)夾河煤礦7208工作面地表沉陷觀測(cè)站的實(shí)測(cè)資料進(jìn)行詳細(xì)的分析,獲得了本區(qū)的地表移動(dòng)變形規(guī)律及概率積分法預(yù)計(jì)參數(shù),為本區(qū)工業(yè)廣場(chǎng)保護(hù)煤柱開(kāi)采研究提供了科學(xué)依據(jù)。(2)根據(jù)國(guó)內(nèi)外工業(yè)廣場(chǎng)煤柱開(kāi)采的理論以及國(guó)內(nèi)現(xiàn)有的開(kāi)采實(shí)例,針對(duì)夾河礦工業(yè)廣場(chǎng)煤柱的地質(zhì)采礦條件設(shè)計(jì)了過(guò)井筒煤柱的開(kāi)采方案:首先把過(guò)煤層處的井壁更換為可縮性井壁,其次在可縮性井壁外側(cè)設(shè)置閉合木垛,然后在井筒周圍留設(shè)一定寬度的方塊煤柱,不對(duì)方塊煤柱進(jìn)行開(kāi)采,只對(duì)方塊煤柱以外的保護(hù)煤柱進(jìn)行條帶開(kāi)采。(3)以?shī)A河礦工廣煤柱為原型結(jié)合FLAC3D數(shù)值模擬程序,對(duì)不同的開(kāi)采方法、不同采留寬以及不同回采率情況下的工廣煤柱開(kāi)采方案進(jìn)行力學(xué)和移動(dòng)變形方面的分析,可以得出以下結(jié)論:①對(duì)方塊煤柱以外的保護(hù)煤柱采用全采時(shí),井筒以及地表的移動(dòng)變形較大,不利于井筒和地面建筑物的保護(hù);同時(shí)井筒底部受到的豎向應(yīng)力集中的影響可能產(chǎn)生井筒的破壞。而條帶開(kāi)采對(duì)井筒和地表建筑物的影響較小,有利于井筒的保護(hù)。②在回采率相同的情況下,采留寬的變化對(duì)井筒的影響很大;采寬越大地表下沉越大,井筒的移動(dòng)變形也越劇烈,在回采率不變的情況下采寬越小對(duì)井筒和地表建筑物的保護(hù)越有利。③當(dāng)采寬一定時(shí),隨著回采率的增加地表和井筒的移動(dòng)變形增大,但其增加量較小。因此采寬一定時(shí),在保證條帶煤柱穩(wěn)定性的前提下可以盡可能大的提高回采率。(4)結(jié)合過(guò)井筒煤柱開(kāi)采方案和數(shù)值模擬結(jié)果,采用全采和條采兩種方法對(duì)夾河礦工廣煤柱開(kāi)采方案進(jìn)行設(shè)計(jì),采用概率積分法對(duì)兩種方案開(kāi)采以后的地表和井筒移動(dòng)變形情況進(jìn)行預(yù)計(jì)分析,通過(guò)綜合分析認(rèn)為夾河礦工業(yè)廣場(chǎng)煤柱采用采寬為40m、留寬為60m的條帶開(kāi)采方案比較合適。(5)通過(guò)分析開(kāi)采后井筒出現(xiàn)破壞的原因,有針對(duì)性的對(duì)井筒進(jìn)行提前維修和加固,增強(qiáng)井筒的抗變形能力,同時(shí)在工廣煤柱開(kāi)采的過(guò)程中要經(jīng)常對(duì)井壁以及井下提升設(shè)施進(jìn)行檢查維修,防止出現(xiàn)大的事故。在工作面地表要設(shè)立觀測(cè)站,并對(duì)地表建筑物和生產(chǎn)設(shè)備進(jìn)行觀測(cè),當(dāng)發(fā)現(xiàn)井筒和地表建筑物出現(xiàn)大的破壞時(shí)要立即停止開(kāi)采,并找出問(wèn)題出現(xiàn)的原因加以解決。
[Abstract]:Protection of coal pillar mining in industrial square is a problem faced by many coal mines whose resources will be exhausted. It is necessary to study the mining technology of coal pillar in order to ensure the safety of wellbore and surface buildings in the process of mining. On the basis of previous studies, this paper takes the protection pillar of Jiahe Coal Mine Industrial Plaza as the research object, through the processing of the measured data in the mining area, the research on the mining plan of the coal pillar in the Industrial Square, and the numerical simulation, and so on. It provides a reasonable mining plan for the pillar mining in Jiahe Coal Mine Industrial Square, and also provides a reference for the protection of the pillar mining in other mining areas under similar geological conditions. The main work and contents of this paper are as follows: (1) the measured data of ground subsidence observation station in 7208 face of Jiahe Coal Mine are analyzed in detail, and the law of surface movement and deformation in this area and the prediction parameters of probability integral method are obtained. It provides the scientific basis for the research of protecting coal pillar mining in the industrial square of this district. (2) according to the theory of the pillar mining of the industrial square at home and abroad and the existing mining examples at home and abroad, According to the geological and mining conditions of Jiahe mine industrial square pillar, the mining scheme of the coal pillar passing through the shaft is designed: firstly, the shaft wall passing through the coal seam is replaced by the retractable shaft wall, and secondly, the closed wood pile is arranged outside the retractable shaft wall. Then set a certain width of block coal pillar around the shaft, not the other block pillar for mining, only the protection pillar outside the other side block pillar for strip mining. (3) take Jiahe miner wide pillar as the prototype combined with FLAC3D numerical simulation program, Based on the analysis of mechanics and displacement deformation of different mining methods, different mining width and different recovery rate, we can draw the following conclusion: 1 when the protection pillar outside the opposite block pillar is used in full mining, The movement and deformation of the wellbore and the ground surface are large, which is not conducive to the protection of the wellbore and the ground building, and the vertical stress concentration at the bottom of the wellbore may cause damage to the wellbore. However, strip mining has little influence on wellbore and surface buildings, which is beneficial to wellbore protection .2 under the same recovery rate, the variation of mining width has great influence on wellbore, and the larger the mining width, the greater the surface subsidence. The more severe the moving deformation of the wellbore is, the smaller the mining width is when the recovery rate is constant, the better the protection of the wellbore and the surface buildings is. 3. When the mining width is constant, the moving deformation of the surface and the wellbore increases with the increase of the recovery rate. But its increase amount is small. Therefore, when the mining width is certain, the recovery rate can be increased as much as possible under the premise of ensuring the stability of the strip pillar. (4) combined with the mining plan of the shaft pillar and the numerical simulation results, The whole mining and strip mining methods are used to design the mining scheme of Jiahe miner's wide pillar, and the probability integration method is used to predict the surface and wellbore movement and deformation after the mining of the two schemes. Through the comprehensive analysis, it is considered that it is more appropriate to adopt the strip mining plan with the mining width of 40m and the width of 60m. (5) through the analysis of the causes of the damage to the shaft after mining, it is pointed out that the wellbore is repaired and strengthened ahead of time. At the same time, it is necessary to check and repair the shaft wall and the downhole hoisting facilities in the process of coal pillar mining in order to prevent the occurrence of major accidents. Observation stations should be set up on the surface of the working face, and surface buildings and production equipment should be observed. When large damage is found in the wellbore and the surface buildings, the mining should be stopped immediately, and the causes of the problems should be solved.
【學(xué)位授予單位】：中國(guó)礦業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD325

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王逢瑚;楊亮慶;孫建平;朱曉冬;;有限元法在木材模態(tài)特性分析中的應(yīng)用[J];東北林業(yè)大學(xué)學(xué)報(bào);2008年04期

2 王曉旭;黃安民;楊忠;楊瑤;;近紅外光譜用于杉木木材強(qiáng)度分等的研究[J];光譜學(xué)與光譜分析;2011年04期

3 何榮;張獻(xiàn)偉;郭增長(zhǎng);李園園;;工業(yè)廣場(chǎng)保護(hù)煤柱局部開(kāi)采對(duì)礦區(qū)鐵路的影響分析[J];河南理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年06期

4 戴華陽(yáng),滕永海,呂泰和,胡友健;大黃山礦暗立井采動(dòng)影響分析與治理措施[J];礦山測(cè)量;1999年01期

5 虞岳明;戴華陽(yáng);何卓軍;;長(zhǎng)廣礦區(qū)六礦井筒與工業(yè)廣場(chǎng)煤柱開(kāi)采設(shè)計(jì)與實(shí)踐[J];采礦與安全工程學(xué)報(bào);2008年02期

6 王鵬;周傳波;郭廖武;梅林芳;李揚(yáng);;基于FLAC及神經(jīng)網(wǎng)絡(luò)的巖體力學(xué)參數(shù)反分析[J];礦冶工程;2009年02期

7 顧新宇;馬尚權(quán);陳開(kāi)巖;張茂增;;有限元方法模擬分析煤層注水效果[J];煤炭技術(shù);2010年06期

8 朱子良;薛華俊;馬振;;楊莊煤礦建下保護(hù)煤柱開(kāi)采影響分析[J];山西建筑;2012年29期

9 姚亞輝;張玉潔;萬(wàn)龍;于許兵;;豎井開(kāi)挖過(guò)程的FLAC~(3D)數(shù)值模擬[J];金屬礦山;2014年05期

10 張吉雄;繆協(xié)興;茅獻(xiàn)彪;陳中偉;;建筑物下條帶開(kāi)采煤柱矸石置換開(kāi)采的研究[J];巖石力學(xué)與工程學(xué)報(bào);2007年S1期

相關(guān)碩士學(xué)位論文 前1條

1 邊明明;連續(xù)壓縮載荷下木材力學(xué)性能及微觀結(jié)構(gòu)變化定量表征[D];中國(guó)林業(yè)科學(xué)研究院;2011年

，

本文編號(hào)：2184279