本文選題：采動(dòng)裂隙場 + 近距離煤層群��； 參考：《中國礦業(yè)大學(xué)（北京）》2013年博士論文

【摘要】：針對(duì)我國大部分礦區(qū)煤層具有滲透性低、透氣性差，實(shí)際生產(chǎn)過程中具有進(jìn)行地面鉆井直接抽采和預(yù)抽采煤層氣效果不佳的困難，利用在煤炭開采過程中，，采動(dòng)影響范圍大、壓力釋放充分、采動(dòng)裂隙發(fā)育，有利于煤層氣解吸等特點(diǎn)，通過理論分析、計(jì)算推導(dǎo)、實(shí)驗(yàn)室相似模擬和數(shù)值模擬等方法，在前人研究單一煤層開采煤巖體裂隙發(fā)育規(guī)律的基礎(chǔ)上，針對(duì)近距離煤層群煤巖整體結(jié)構(gòu)，研究其受采動(dòng)影響下各個(gè)煤層的滲透特性變化情況與規(guī)律，通過多種監(jiān)測手段并行結(jié)果互衍的方式，弄清近距離煤層群保護(hù)層開采后瓦斯的真正來源及通道，并在此基礎(chǔ)上定量化地研究煤巖整體結(jié)構(gòu)中的瓦斯儲(chǔ)運(yùn)規(guī)律。本文通過大量的現(xiàn)場實(shí)測數(shù)據(jù)和示蹤氣體分析的方法，在井下工程現(xiàn)場測試煤層群開采過程中，卸壓煤層不同卸壓區(qū)域隨保護(hù)層開采工作面推進(jìn)的滲透率變化情況以及瓦斯分源瓦斯涌出分析。探索形成新型的滲透率和采動(dòng)裂隙時(shí)空演化規(guī)律監(jiān)測手段，能夠預(yù)測檢驗(yàn)并修正瓦斯儲(chǔ)運(yùn)規(guī)律，為選擇更合理的瓦斯防治技術(shù)，也為煤與瓦斯協(xié)調(diào)共采特供了理論與實(shí)踐依據(jù)。
[Abstract]:In view of the low permeability and poor permeability of coal seams in most mining areas in China, it is difficult in the actual production process to carry out direct and pre-extraction coalbed methane extraction on the ground, so the mining influence range is large in the process of coal mining. Sufficient pressure release and the development of mining fissures are beneficial to the desorption of coalbed methane. Through theoretical analysis, calculation and derivation, laboratory similarity simulation and numerical simulation, etc., On the basis of the previous research on the law of rock mass fracture development in single coal seam, aiming at the whole structure of coal and rock in short distance coal seam group, the change and regularity of permeability characteristics of each coal seam under the influence of mining movement are studied. In this paper, the real source and channel of gas after mining of protective strata in close distance coal seams are clarified by means of parallel results of multiple monitoring methods, and on this basis, the laws of gas storage and transportation in the whole structure of coal and rock are quantitatively studied. In this paper, through a large number of field data and tracer gas analysis method, in the underground engineering field test coal seam mining process, The change of permeability in different pressure relief areas of pressure relief coal seam with the advance of mining face in protective layer and the analysis of gas emission from different sources of gas are analyzed. A new monitoring method of permeability and space-time evolution law of mining fracture can be formed, which can predict, test and correct the law of gas storage and transportation, and provide theoretical and practical basis for the selection of more reasonable gas prevention and control technology as well as for the coordination of coal and gas mining.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)（北京）
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD712

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