【摘要】：長久以來,我國擁有的豐富煤炭資源一直占據(jù)著一次性能源消耗的主體地位,隨著采煤效率及其產(chǎn)量的不斷提高,諸如露天煤層或淺埋深煤層等具有良好開采條件的煤炭資源已經(jīng)被大量開采,而煤炭在未來幾十年中仍將作為主要能源存在,這就使得薄煤層的開采逐步受到人們的重視。就目前對薄煤層開采的研究現(xiàn)狀來看,絕大部分都集中在工作面方面,對薄煤層聯(lián)合開采巷道布置的研究相對少見,且關(guān)鍵在于遠不如對工作面所做的研究那樣系統(tǒng)全面�；谝陨锨闆r,本論文以潞安集團漳村礦為工程背景,運用理論研究、相似模擬和數(shù)值模擬等方法進行研究,再輔以工程實踐給予實例驗證,全面分析近距離薄煤層群聯(lián)合開采的巷道布置。研究成果主要為以下幾點:(1)利用現(xiàn)有薄煤層聯(lián)合開采巷道布置的力學(xué)模型,歸納論證已有巷道內(nèi)錯式和外錯式公式,并結(jié)合漳村礦實際情況給出理論錯距:外錯距7m,內(nèi)錯距4.7m;(2)利用大比例(1:20)物理相似模擬實驗對層間距2m和4m時不同巷道布置方式情況下各種錯距布置進行模擬觀察分析,得出層間距2m時合理外錯距大于10m,內(nèi)錯距大于6m;層間距4m時合理外錯距大于8m,內(nèi)錯距大于5m;以及重疊式巷道布置時的穩(wěn)定情況;(3)采用UDEC數(shù)值模擬軟件對層間距2m、4m、6m和8m時不同巷道布置方式情況下各種巷道錯距布置進行模擬分析,得出各層間距下不同布置方式的合理錯距,并就層間距對回采巷道布置的影響進行了分析總結(jié)。論文最后就本文分析得出的結(jié)論,引用相應(yīng)的工程實例進一步分析驗證,全面系統(tǒng)的對漳村礦近距離薄煤層群聯(lián)合開采回采巷道布置進行了分析研究和論證,為今后具備相似地質(zhì)條件的礦井實際生產(chǎn)提供了一定的參考和借鑒。
[Abstract]:For a long time, the abundant coal resources in our country have been occupying the main position of one-time energy consumption, along with the continuous improvement of coal mining efficiency and output. Coal resources with good mining conditions, such as open-pit coal seam or shallow buried deep coal seam, have been exploited in large quantities, but coal will still exist as the main energy in the coming decades, which makes people pay more and more attention to the exploitation of thin coal seam. According to the present research situation of thin coal seam mining, most of them are concentrated in the working face, and the research on the roadway layout of the thin coal seam combined mining is relatively rare, and the key is that it is far less systematic and comprehensive than the research on the working face. Based on the above situation, this paper takes Zhangcun Mine of Lu'an Group as the engineering background, uses the methods of theoretical research, similarity simulation and numerical simulation, and then gives an example to verify it with engineering practice. The roadway layout of combined mining of short distance thin coal seam group is analyzed in an all-round way. The main research results are as follows: (1) based on the existing mechanical model of roadway layout in thin coal seam combined mining, the existing formulas of inner and outer dislocations in roadways are summarized and demonstrated. Combined with the actual situation of Zhangcun Mine, the theoretical error distance is given: the outer fault distance is 7 m, the inner fault distance is 4.7 m, (2) by using the physical similarity simulation experiment of large scale (1:20), all kinds of staggered spacing arrangements under different roadway layout modes with 2 m and 4 m interval are observed and analyzed. The results show that the reasonable outer fault distance is more than 10m and the inner dislocation distance is more than 6m when the interval is 2m; the reasonable outer dislocation distance is more than 8m and the inner fault distance is more than 5m when the interval is 4m; and the stability of the superimposed roadway arrangement is obtained. (3) using the UDEC numerical simulation software to simulate the interval between the layers of 2mand 4mm-6m. At 8 m and 8 m, the dislocations of different roadways are simulated and analyzed. The reasonable staggered distance of different arrangement modes under each layer spacing is obtained, and the influence of layer spacing on the layout of mining roadway is analyzed and summarized. At the end of the paper, the conclusion of this paper is analyzed and verified by citing the corresponding engineering examples, and the layout of mining roadway in Zhangcun coal mine is analyzed and demonstrated systematically. It provides a certain reference and reference for the actual production of mines with similar geological conditions in the future.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TD823.81

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