我国煤层大多具有高瓦斯含量、低渗透率等特点，回采工作面更易发生瓦斯灾害事故，我国煤矿的特殊地质及瓦斯赋存条件，煤层预抽效果不佳，高突矿井进行卸压瓦斯抽采势在必行。本文以新疆硫磺沟煤矿为实验原型，4-5（06）工作面为试验工作面，采用物理相似模拟、数值模拟等手段，确定高位钻孔与埋管抽采最佳抽采参数，并通过现场实践验证其在不同伪斜下瓦斯治理效果。

本文通过理论计算、物理相似模拟实验，获得“三带”高度，确定了高位钻孔的布置范围。根据现场参数进行瓦斯涌出量预测，并分析回采工作面瓦斯涌出因素。结合实验结果及现场情况，分别建立不同抽采条件下几何模型，开展协同抽采数值模拟实验。无抽采时，通过调整配风量与伪斜降低上隅角瓦斯浓度，得到最佳风量为2160 m³/min；在最佳风量条件下开展埋管抽采与高位抽采下的工作面上隅角伪斜效应研究，分别得到最优埋管与最优高位钻孔抽采条件。由于单一抽采方式无法满足安全生产条件，因此需要协同抽采。分别以最佳埋管布置参数和最佳高位钻孔布置参数为基础，开展协同抽采数值模拟实验。模拟结果表明符合条件的抽采方案为：①高位钻孔间距3 m，抽采负压10 kPa，伪斜30 m，抽采口埋深30 m，抽采负压15 kPa；②抽采口埋深20 m，抽采负压10 kPa，伪斜25 m，高位钻孔间距3 m，抽采负压10 kPa。通过数值模拟结果建立卸压瓦斯协同抽采方案判定方法，并进行工程实践检验，实践表明，在抽采口埋深20 m，伪斜25 m，高位钻孔间距3 m时，上隅角瓦斯浓度不超过0.5%，实现安全生产。

本文通过理论分析、物理相似模拟、数值模拟等方法，确定合理布置参数与抽采参数，并对实验结果进行现场验证，建立立体抽采方法，分析瓦斯抽采效果，以验证论文研究结果合理性，为同类矿井瓦斯治理工作提供参考，对井下瓦斯灾害防治具有一定借鉴意义。

Most of the coal seams in our country are characterized by high gas content and low permeability, which make the occurrence of gas disasters in mining area more likely. Due to the unique geological and gas occurrence conditions in Chinese coal mines, the pre-drainage effect of coal seams is often poor, and the unloading pressure gas extraction method is necessary for high-gas outburst mines. In this study, taking Sulphur Gou coal mine in Xinjiang as the experimental prototype and the 4-5 (06) working area as the test working area, physical similarity simulation, numerical simulation, and other methods were used to determine the optimal extraction parameters for high-level boreholes and buried pipe extraction, and the gas control effect was verified through field practice under different pseudo-slope.

By means of theoretical analysis, computational calculations, and physical similarity simulation experiments, this study has determined the optimal arrangement range for high-level boreholes based on the "three-zone" concept. Gas emission rates were predicted based on field parameters, and factors affecting gas emission in the mining area were analyzed. Geometric models were established under different extraction conditions, taking into consideration experimental results and field conditions, followed by numerical simulation experiments on coordinated extraction. Without extraction, by adjusting the ventilation volume and pseudo-slope to reduce the gas concentration at the upper corner, the optimal ventilation volume was determined to be 2160 m³/min. Under the optimal ventilation volume conditions, the research on the pseudo-slope effect of gas concentration at the upper corner was conducted for buried pipe extraction and high-level borehole extraction, respectively, and the optimal conditions for buried pipe extraction and high-level borehole extraction were obtained. As a single extraction method cannot meet the safety production requirements, coordinated extraction is needed. Based on the optimal parameters of buried pipe layout and high-level borehole layout, numerical simulation experiments of coordinated extraction were conducted. The simulation results showed that the compliant extraction schemes were: ① high-level borehole spacing of 3 m, negative pressure extraction of 10 kPa, pseudo-slope of 30 m, and buried depth of 30 m with negative pressure extraction of 15 kPa; ② buried depth of 20 m, negative pressure extraction of 10 kPa, pseudo-slope of 25 m, high-level borehole spacing of 3 m, and negative pressure extraction of 10 kPa. A method for determining the coordinated extraction scheme for unloading pressure gas was established based on the numerical simulation results and verified through engineering practice. The practical results showed that when the buried depth of the extraction opening was 20 m, pseudo-slope was 25 m, and high-level borehole spacing was 3 m, the gas concentration at the upper corner did not exceed 0.5%, achieving safe production.

The paper employs theoretical analysis, physical similarity simulation, numerical simulation, and other methods to determine reasonable parameters for layout and gas extraction. The experimental results are further validated through on-site verification, and a three-dimensional gas extraction method is established. The effectiveness of gas extraction is analyzed to validate the rationality of the research results. The findings provide reference for similar mine gas management work and offer insights for the prevention and control of underground gas disasters.

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