本文選題：沿空留巷 + 采空區(qū)�。� 參考：《中國礦業(yè)大學(xué)》2017年碩士論文

【摘要】：本文在新元煤礦3107工作面高水材料巷旁充填沿空留巷的基礎(chǔ)之上,采用理論分析、數(shù)值計(jì)算和現(xiàn)場(chǎng)試驗(yàn)相結(jié)合的方法,研究了采空區(qū)裂隙隨工作面推進(jìn)的發(fā)育演化規(guī)律,建立了符合現(xiàn)場(chǎng)情況的三維數(shù)值模型,得到了采空區(qū)瓦斯?jié)舛确植家?guī)律,確定了工作面瓦斯綜合治理技術(shù),提出了3107工作面瓦斯治理方案,現(xiàn)場(chǎng)實(shí)踐取得了較好的經(jīng)濟(jì)效益和安全生產(chǎn)效果。取得的成果如下:(1)綜合運(yùn)用經(jīng)驗(yàn)公式法、仰孔注水探測(cè)法和數(shù)值模擬法研究了采空區(qū)冒落帶和裂隙帶的最大高度,確定了采空區(qū)冒落帶范圍為0-10m、裂隙帶范圍為10-36m及其孔隙率。(2)在經(jīng)典礦壓理論和O型圈理論的基礎(chǔ)之上,研究了采空區(qū)上覆巖層的破斷垮落特征,建立了符合現(xiàn)場(chǎng)情況的三維數(shù)值模型,得到了采空區(qū)瓦斯?jié)舛确植家?guī)律,為瓦斯綜合治理提供了依據(jù)。(3)通過理論分析和數(shù)值模擬的方法,確定了順層鉆孔、Y型通風(fēng)配比、高位鉆孔、采空區(qū)埋管的瓦斯治理參數(shù)。其中,Y型通風(fēng)方式主副進(jìn)風(fēng)巷的配風(fēng)比確定為3.3∶1,主進(jìn)風(fēng)巷風(fēng)量為2000m3/min,輔助進(jìn)風(fēng)巷的風(fēng)量為600m3/min。上述研究成果在新元煤礦3107工作面的現(xiàn)場(chǎng)應(yīng)用,與U+L通風(fēng)系統(tǒng)相比,實(shí)行Y型通風(fēng)系統(tǒng)后,回風(fēng)巷道最高瓦斯?jié)舛葹?.4%,沿空留巷澆筑墻體處最高瓦斯?jié)舛?.56%,工作面配風(fēng)量由3000m3/min降至2600m3/min,取得了較好的經(jīng)濟(jì)效益和安全生產(chǎn)效果,并為以后相似條件下的瓦斯治理技術(shù)提供了參考和依據(jù)。
[Abstract]:In this paper, on the basis of filling along goaf with high water material in 3107 face of Xinyuan Coal Mine, using the method of theoretical analysis, numerical calculation and field test, the law of development and evolution of the crack in goaf with the advance of working face is studied in this paper. A three-dimensional numerical model is established to fit the field situation, the distribution law of gas concentration in goaf is obtained, the comprehensive gas control technology of working face is determined, and the gas control scheme of 3107 working face is put forward. The field practice has achieved good economic benefit and safe production effect. The results obtained are as follows: (1) the maximum height of caving zone and fracture zone in goaf is studied by using empirical formula method, upside-hole water injection detection method and numerical simulation method. On the basis of the classical rock pressure theory and the O-circle theory, the authors have studied the characteristics of the overlying strata breaking and caving in the goaf on the basis of the classical rock pressure theory and the O-circle theory, and determined that the range of the caving zone in goaf is 0-10 m, and the range of fracture zone is 10-36 m and its porosity. A three dimensional numerical model is established in accordance with the field situation, and the distribution law of gas concentration in goaf is obtained, which provides a basis for comprehensive control of gas. By means of theoretical analysis and numerical simulation, the ratio of Y-type ventilation is determined by the method of theoretical analysis and numerical simulation. Gas treatment parameters of high-level boreholes and buried pipes in goaf. The air distribution ratio of the main and secondary air entry roadways is determined to be 3.3: 1, the air volume of the main air entry roadway is 2000 m3 / min, and the air volume of auxiliary air entry lane is 600 m3 / min. The application of the above research results in the 3107 face of Xinyuan Coal Mine is compared with that of the U L ventilation system, and after the Y type ventilation system is implemented, The maximum gas concentration in the return air roadway is 0.4 and the maximum gas concentration in the wall is 0.56 along the goaf roadway. The air distribution volume in the working face is reduced from 3000m3/min to 2600m3 / min, and good economic benefits and safe production results have been obtained. It also provides a reference and basis for the gas treatment technology under similar conditions in the future.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD712

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本文編號(hào)：1918827