穿层钻孔径向流场瓦斯流量推算煤层瓦斯压力方法研究

doi:10.13722/j.cnki.jrme.2015.0327

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摘要为了提高煤层瓦斯压力测试工作的效率，基于质量守恒定律和达西定律，建立穿层钻孔径向流场瓦斯流动偏微分方程，采用拉普拉斯变换法解出瓦斯压力分布函数，得出瓦斯排放有效半径和抽放有效半径；再结合径向流场瓦斯的渗流方式，给出穿层钻孔瓦斯流量的衰减函数和衰减曲线，提出瓦斯流量推算瓦斯压力法及反映穿层钻孔瓦斯排放难易程度的指标。通过高源煤矿现场试验的10个测试钻孔表明：在瓦斯压力不小于0.28 MPa的情况下，瓦斯流量推算瓦斯压力的误差在9%以内，因此在不需要精确测定瓦斯压力的工作中，只要选取一定的安全系数，流量推算法测得的瓦斯压力可以满足矿井生产需要。

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	周睿1
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	闫斌移2

关键词 ：采矿工程, 质量守恒定律, 达西定律, 穿层钻孔, 钻孔瓦斯流量, 瓦斯压力

Abstract：To improve the efficiency of testing gas pressure，the partial differential equation of gas radial flow in crossing borehole was established by using Law of conservation of mass and Darcys Law，then the gas pressure function was solved with Laplace Transform，thus the effectived emission radius and drainage radius were found；Considering the seepage flow manner of gas，the attenuation function and curve of gas flow in crossing borehole were obtained，so the method of calculating gas pressure and which represented the difficulty of gas emission in crossing borehole were proposed. Maximum error of gas pressure was 9% except gas pressure was under 0.28 MPa was showed by testing results in Gaoyuan coal mine. So without the need for accurately measuring gas pressure，calculation with gas flow could meet the needs of the coal mine with a factor of safety.

Key words： mining engineering law of conservation of mass Darcys law crossing borehole gas flow in drilling role gas pressure

引用本文:

周睿1，2，闫斌移2. 穿层钻孔径向流场瓦斯流量推算煤层瓦斯压力方法研究[J]. 岩石力学与工程学报, 2016, 35(S1): 3147-3152.
ZHOU Rui1，2，YAN Binyi2. Research on calculating gas pressure with gas flow in crossing borehole. , 2016, 35(S1): 3147-3152.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2015.0327 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS1/3147

[1] 俞启香. 矿井瓦斯防治[M]. 徐州：中国矿业大学出版社，1992：10–11.(YU Qixiang. Mine gas prevetion and control[M]. Xuzhou：China University of Mining and Technology Press，1992：10–11.(in Chinese))

[2] 曹书刚，郭平，李勇，等. 瓦斯压力对原煤渗透特性的影响[J]. 煤炭学报，2010，35(4)：595–597.(CAO Shugang，GUO Ping，LI Yong，et al. Effect of gas pressure on gas seepage of outburst coal[J]. Journal of China Coal Society，2010，35(4)：595–597.(in Chinese))

[3] 尹光志，李小双，赵洪宝，等. 瓦斯压力对突出煤瓦斯渗流影响试验研究[J]. 岩石力学与工程学报，2009，28(4)：697–703.(YIN Guangzhi，LI Xiaoshuang，ZHAO Hongbao，et al. Experimental study of effect of gas pressure on gas seepage of outburst coal[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(4)：697–703.(in Chinese))

[4] 谢广祥，胡祖祥，王磊. 工作面煤层瓦斯压力与采动应力的耦合效应[J]. 煤炭学报，2014，39(6)：1 089–1 094.(XIE Guangxiang，HU Zuxiang，WANG Lei. The coupling effect of the coal seam gas pressure and mining stress in working face[J]. Journal of China Coal Society，2014，39(6)：1 089–1 094.(in Chinese))

[5] 尹光志，李铭辉，李文璞，等. 瓦斯压力对卸荷原煤力学及渗透特性的影响[J]. 煤炭学报，2010，37(9)：1 499–1 503.(YIN Guangzhi，LI Minghui，LI Wenpu，et al. Influence of gas pressure on mechanical and seepage characteristics of coal under unloading condition[J]. Journal of China Coal Society，2010，37(9)：1 499–1 503.(in Chinese))

[6] 张占存. 压力恢复曲线测定煤层瓦斯赋存参数的试验研究[J]. 煤炭学报，2012，37(8)：1 310–1 314.(ZHANG Zhancun. Experimental research on applying pressure build-up curves to determine the gas occurrence parameters of coal seam[J]. Journal of China Coal Society，2012，37(8)：1 310–1 314.(in Chinese))

[7] 何书建，张仁贵，王凯，等. 新型封孔技术在煤层瓦斯压力测定中的应用[J]. 煤炭科学技术，2003，31(10)：33–37.(HE Shujian，ZHANG Rengui，WANG Kai，et al. New bore hole sealing technology applied in coal bed methane pressure measurement[J]. Coal science and Technology，2003，31(10)：33–37.(in Chinese))

[8] 马尚权，陈学习，梁为，等. 承压三相泡沫瓦斯压力测定仪[J]. 矿山机械，2007，35(11)：37–30.(MA Shangquan，CHENG Xuexi，LIANG Wei，et al. Pressure three phase foam gas pressure gauge[J]. Mining Machinery，2007，35(11)：27–30.(in Chinese))

[9] 王浩，蒋承林，张建军. 煤层瓦斯压力测定中的钻孔注浆新技术研究[J]. 中国安全科学学报，2011，21(6)：78–83.(WANG Hao，JIANG Chenglin，ZHANG Jianjun. Novel technology studies on drilling grouting in methane pressure measurement of coal seam[J]. China Safety Science Journal，2011，21(6)：78–83.(in Chinese))

[10] 王法凯，蒋承林，公衍伟，等. 双套管带压注浆技术在瓦斯压力测定中的应用[J]. 工矿自动化，2010，(9)：5–9.(WANG Fakai，JIANG Chenglin，GONG Yanwe，et al. Application of double-pipe pressure grouting technology in gas pressure measurement[J]. Industry and Mine Automation，2010，(9)：5–9.(in Chinese))

[11] 张占存，贺振国，邹永洺. 新型煤层瓦斯压力测定封孔技术[J]. 煤矿安全，2014，45(6)：45–48.(ZHANG Zhancun，HE Zhenguo，ZOU Yongming. The new borehole sealing technology in the gas pressure measurement of coal seam[J]. Safety in Coal Mines，2014，45(6)：45–48.(in Chinese))

[12] 李晓伟，蒋承林. 含水煤岩体瓦斯压力测定的水锥效应研究[J]. 采矿与安全工程学报，2015，32(1)：163–166.(LI Xiaowei，JIANG Chenglin. Water coning effect in gas pressure determination of coal-rock mass containing moisture[J]. Journal of Mining and Safety Engineering，2015，32(1)：163–166.(in Chinese))

[13] 胡东亮，周福宝，张仁贵，等. 影响煤层瓦斯压力测定结果的关键因素分析[J]. 煤炭科学技术，2010，38(2)：28–30.(HU Dongliang，ZHOU Fubao，ZHANG Rengui，et al. Analysis on key factorsa ffected tom easured results of seam gas pressure[J]. Coal Science and Technology，2010，38(2)：28–30.(in Chinese))

[14] 周世宁，林柏泉. 煤层瓦斯赋存及流动规律[M]. 北京：煤炭工业出版社，1998：68–70.(ZHOU Shining，LIN Boquan. The theory of gas flow and storage in coal seams[M]. Beijing：China Coal Industry Publishing House，1998：68–70.(in Chinese))

[15] 吴世跃. 煤层中的耦合运动理论及其应用[M]. 北京：科学出版社，2009：28–34.(WU Shiyue. Coupling movement theory in coal seam and its application[M]. Beijing：Science Press，2009：28–34.(in Chinese))