本文選題：奧灰水 + 監(jiān)測(cè)層��； 參考：《太原理工大學(xué)》2013年碩士論文

【摘要】：我國(guó)煤礦突水災(zāi)害嚴(yán)重,特別是華北煤田。當(dāng)前我國(guó)華北煤田主采石炭二疊紀(jì)煤層,煤層底板下方幾十米處即為含水量巨大的奧陶紀(jì)灰?guī)r含水層。奧灰水突水事故一旦發(fā)生,突水量很大,短時(shí)間內(nèi)可能淹沒礦井,很難在短時(shí)間內(nèi)疏水排干,救援工作很難展開,會(huì)造成巨大的經(jīng)濟(jì)損失和人員傷害。 本文通過對(duì)兩次奧灰水突水事故原因的分析,分析了奧灰水突水的機(jī)理,說明了奧灰水突水預(yù)測(cè)預(yù)報(bào)研究的必要性和可能性。奧灰水突水主要是通過原生的導(dǎo)水構(gòu)造發(fā)生的,在煤層開采之前有煤層保護(hù),突水事故不會(huì)發(fā)生,開采煤層時(shí)采掘工作面一旦與導(dǎo)水構(gòu)造相遇則會(huì)發(fā)生突水事故。在太原理工大學(xué)的MTI奧灰水突水預(yù)測(cè)預(yù)報(bào)方法的基礎(chǔ)上,本文進(jìn)行了煤礦奧灰水突水危險(xiǎn)區(qū)域劃分方法的研究。并且將該突水危險(xiǎn)區(qū)域劃分方法應(yīng)用于煤礦奧灰水突水監(jiān)測(cè)預(yù)報(bào)系統(tǒng)中,進(jìn)行實(shí)際工程應(yīng)用。 MTI奧灰水突水預(yù)測(cè)預(yù)報(bào)方法主要是選取煤層底板以下,奧陶紀(jì)灰?guī)r含水層之上的小含水層作為監(jiān)測(cè)層,通過對(duì)監(jiān)測(cè)層的計(jì)算與分析,進(jìn)行奧灰水突水的預(yù)測(cè)預(yù)報(bào)。本文首先研究了對(duì)煤層底板含水層進(jìn)行有限元計(jì)算的方法和有限元程序的編制。計(jì)算方法為選取礦區(qū)范圍一定的區(qū)域作為計(jì)算區(qū)域,對(duì)計(jì)算區(qū)域進(jìn)行有限元計(jì)算網(wǎng)格的剖分,確定計(jì)算區(qū)域的邊界條件和含水層的參數(shù),建立含水層的滲流模型,然后進(jìn)行有限元程序的計(jì)算。計(jì)算結(jié)果為含水層計(jì)算區(qū)域內(nèi)各個(gè)節(jié)點(diǎn)的水位值。通過對(duì)監(jiān)測(cè)含水層與奧陶紀(jì)灰?guī)r含水層的有限元計(jì)算結(jié)果的分析與研究,本文提出了煤礦奧灰水突水危險(xiǎn)區(qū)域的劃分的兩種方法。一是根據(jù)監(jiān)測(cè)層的計(jì)算水位與實(shí)際水位的計(jì)算誤差的突水危險(xiǎn)區(qū)域判別方法；二是根據(jù)監(jiān)測(cè)層與奧陶紀(jì)灰?guī)r含水層的水位差的突水危險(xiǎn)區(qū)域判別方法。兩種奧灰水突水危險(xiǎn)區(qū)域劃分方法均是通過有限元計(jì)算出計(jì)算區(qū)域內(nèi)各個(gè)節(jié)點(diǎn)的突水危險(xiǎn)指數(shù),通過不同的判別指標(biāo),劃分出礦區(qū)奧灰水不同等級(jí)的突水危險(xiǎn)區(qū)域。 以李雅莊煤礦與趙莊煤礦為實(shí)例,本文將所提出的煤礦奧灰水突水危險(xiǎn)區(qū)域的劃分方法應(yīng)用于工程實(shí)際中。首先,根據(jù)礦區(qū)的實(shí)際水文地質(zhì)條件與對(duì)兩家煤礦的煤層底板的奧陶紀(jì)灰?guī)r含水層與作為監(jiān)測(cè)層的太原組灰?guī)r含水層進(jìn)行計(jì)算區(qū)域的選取、計(jì)算網(wǎng)格的剖分、邊界條件的確定等。然后,通過礦區(qū)內(nèi)含水層簡(jiǎn)化的滲流模型對(duì)含水層進(jìn)行有限元計(jì)算。根據(jù)計(jì)算結(jié)果繪制出礦區(qū)內(nèi)奧陶紀(jì)灰?guī)r含水層等水位線、作為監(jiān)測(cè)層的太原組灰?guī)r含水層等水位線和礦區(qū)內(nèi)的奧灰水突水危險(xiǎn)區(qū)域劃分。最后,根據(jù)礦區(qū)實(shí)際情況對(duì)計(jì)算結(jié)果進(jìn)行分析與總結(jié)。
[Abstract]:The water inrush disaster of coal mine in our country is serious, especially in North China coalfield. At present, the Permian coal seam of the main quarrying coal field in North China is the Ordovician limestone aquifer with huge water content several tens meters below the floor of the coal seam. Once the water inrush accident of Ordovician ash occurs, the amount of water inrush is very large, which may submerge the mine in a short time, it is very difficult to drain water in a short time, and the rescue work is difficult to carry out, which will cause huge economic loss and personnel injury. Based on the analysis of the causes of two Ordovician water inrush accidents, the mechanism of Ordovician water inrush is analyzed, and the necessity and possibility of prediction and prediction of Ordovician water inrush are explained. The water inrush of Ordovician ash occurs mainly through the primary water diversion structure, which is protected by coal seam before coal seam mining, and the water inrush accident will not occur. Once the mining face meets with the water diversion structure, the water inrush accident will occur when the coal seam is opened. Based on the prediction and prediction method of MTI Ordovician water inrush in Taiyuan University of Science and Technology, this paper studies the method of dividing the dangerous area of Ordovician water inrush in coal mine. The method is applied to the monitoring and forecasting system of Ordovician water inrush in coal mine. The main method of water inrush prediction in MTI is to select the small aquifer above the Ordovician limestone aquifer as the monitoring layer, and to forecast the water inrush of the Ordovician through the calculation and analysis of the monitoring layer. In this paper, the finite element method and program for calculating coal seam floor aquifer are studied. The calculation method is to select a certain area in the mining area as the calculation area, to divide the calculation area into finite element calculation meshes, to determine the boundary conditions and the parameters of the aquifer, and to establish the seepage model of the aquifer. Then the finite element program is calculated. The calculated results are the water level values of each node in the aquifer calculation area. Based on the analysis and study of the finite element calculation results of monitoring aquifer and Ordovician limestone aquifer, two methods of dividing the dangerous area of water inrush of Ordovician water in coal mine are put forward in this paper. The first is the method of distinguishing the dangerous area of water inrush according to the calculation error between the calculated water level and the actual water level of the monitoring layer, and the second is the method of distinguishing the dangerous area of water inrush from the water level difference between the monitoring layer and the limestone aquifer of the Ordovician. The two methods are used to calculate the water inrush risk index of each node in the area by finite element method, and to divide the dangerous area of Ordovician water inrush into different grades by different discriminant indexes. Taking Liyazhuang coal mine and Zhaozhuang coal mine as examples, this paper applies the method of dividing the dangerous area of water inrush of Ordovician ash in coal mine to engineering practice. First of all, according to the actual hydrogeological conditions of the mining area and the selection of the calculation area of the Ordovician limestone aquifer of the coal seam floor of the two coal mines and the Taiyuan formation limestone aquifer as the monitoring layer, the calculation grid is divided. The determination of boundary conditions, etc. Then, the aquifer is calculated by finite element method through the simplified seepage model of the aquifer in the mining area. According to the calculation results, the water level line of Ordovician limestone aquifer in the mining area, the water level line of Taiyuan formation limestone aquifer as the monitoring layer, and the dangerous area of Ordovician water inrush in the mining area are drawn. Finally, according to the actual situation of the mining area, the calculation results are analyzed and summarized.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD745

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