高压注水对煤体瓦斯解吸特性影响的试验研究

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Abstract Based on the methods and technologies of coal-bed methane(CBM) exploration by coal seam in hydrofracture on the ground，and the desorption characteristic of CBM after the effects of high pressure water injection into the coal mass sample，a great deal of experiments about CBM desorption features in coal sample after water injection have been designed. Through these experiments，desorption features of CBM after the effects of high pressure water whether or not have been illustrated；and the comparison of desorption whether water injection or not could be showed in order to apply in actual coal seam. The experimental equipments which acted on our own manufactured devices including adsorption，water injection and desorption，all of the necessary experiments have been conducted. During the process of experiments，adsorption，high pressure water injection，desorption experiment are conducted one by one. In order to acquire the desorption law of coal samples at different conditions，the combination experiments of coal，gas adsorption pressure and desorption which injected water or not have also been studied. The results show that：(1) At the same balanced gas adsorption pressure，the natural desorption percentage of poor coal sample #1–1 is 56.17% and exceeds the blind coal sample #2–1，the value of which is 51.50%. The result is equated to the actual coal mine. (2) The desorption percentages of coal mass containing gas are mostly affected by whether water injection or not. When the water injection pressure was equal to gas adsorption pressure，the desorption percentages of the coal samples #1–1，#1–2 and #2–1 are 40.15%，47.17%，27.09% respectively，and the percentages are only 50%－70% of the natural state. The most affection one is the blind coal sample #2–1，and the least one is the poor coal sample #1–2. (3) Followed by the pressure of water injection increasing，the ultimate desorption percentages gradually decrease more or less at nonlinear law and go to remain stable at last. The percentages of desorption will tend to stable if water injection pressure reached a limited value. (4) Time effects of desorption are related to water injection. In natural state，desorption could be stable at very short time，but after water injection the balance will need long time.

Key words： mining engineering coal mass containing gas high pressure water injection adsorption and desorption exploration of CBM

Received: 01 November 2010

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I3/547

[1] HOSSEIN J，FARUK C. Determination of multi-component gas and water equilibrium and non-equilibrium sorption isotherms in carbonaceous solids from early-time measurements[J]. Fuel，2007，86(10–11)：1 601–1 613. [2] ANNA L O. Groundwater flow associated with coalbed gas production，Ferron sandstone，east-central Utah[J]. International Journal of Coal Geology，2003，56(1–2)：69–95. [3] KROOSS B M，BERGEN F V，GENSTERBLUM Y，et al. High-pressure methane and carbon dioxide adsorption on dry and moisture-equilibrated Pennsylvanian coals[J]. International Journal of Coal Geology，2002，51(2)：69–92. [4] 赵阳升，胡耀青，杨栋，等. 三维应力下吸附作用对煤岩体气体渗流规律影响的试验研究[J]. 岩石力学与工程学报，1999，18(6)：651–653.(ZHAO Yangsheng，HU Yaoqing，YANG Dong，et al. The experimental study on the gas seepage law of rock related to adsorption under 3D stresses[J]. Chinese Journal of Rock Mechanics and Engineering，1999，18(6)：651–653.(in Chinese)) [5] 肖知国，王兆丰. 煤层注水防治煤与瓦斯突出机制的研究现状与进展[J]. 中国安全科学学报，2009，19(10)：150–159.(XIAO Zhiguo，WANG Zhaofeng. Status and progress of studies on mechanism of preventing coal and gas outburst by coal-seam infusion[J]. China Safety Science Journal，2009，19(10)：150–159.(in Chinese)) [6] LANGMUIR I. The constitution and fundamental properties of solids and liquids[J]. Journal of the American Chemical Society，1916，38(11)：2 221–2 295. [7] AIREY E M. Gas emission from broken coal：an experimental and theoretical investigation[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1968，5(6)：475–494. [8] 秦文贵，张延松. 煤孔隙分布与煤层注水增量的关系[J]. 煤炭学报，2000，25(5)：514–517.(QIN Wengui，ZHANG Yansong. Relation of pore distribution of coal with water infusion increment in seams[J]. Journal of China Coal Society，2000，25(5)：514–517.(in Chinese)) [9] 聂百胜，何学秋，冯志华，等. 磁化水在煤层注水中的应用[J]. 辽宁工程技术大学学报(自然科学版)，2007，26(1)：1–3.(NIE Baisheng，HE Xueqiu，FENG Zhihua，et al. Application of magnetized water in coal seam water infusion[J]. Journal of Liaoning Technical University(Nature Science)，2007，26(1)：1–3.(in Chinese)) [10] 陈尚斌，朱炎铭，刘通义，等. 清洁压裂液对煤层气吸附性能的影响[J]. 煤炭学报，2009，34(1)：89–94.(CHEN Shangbin，ZHU Yanming，LIU Tongyi，et al. Impact of the clear fracturing fluid on the adsorption properties of CBM[J]. Journal of China Coal Society，2009，34(1)：89–94.(in Chinese)) [11] 郭红玉，苏现波. 煤层注水抑制瓦斯涌出机制研究[J]. 煤炭学报，2010，35(6)：928–931.(GUO Hongyu，SU Xianbo. Research on the mechanism of gas emission inhibition in water-flooding coal seam[J]. Journal of China Coal Society，2010，35(6)：928–931.(in Chinese)) [12] 唐巨鹏，潘一山，李成全，等. 有效应力对煤层气解吸渗流影响试验研究[J]. 岩石力学与工程学报，2006，25(8)：1 563–1 568.(TANG Jupeng，PAN Yishan，LI Chengquan，et al. Experimental study on effect of effective stress on desorption and seepage of coal bed methane[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(8)：1 563–1 568.(in Chinese)) [13] 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)：697–702.(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)：697–702.(in Chinese)) [14] 王兆丰，李晓华，戚灵灵，等. 水分对阳泉3号煤层瓦斯解吸速度影响的试验研究[J]. 煤矿安全，2010，(7)：1–3.(WANG Zhaofeng，LI Xiaohua，QI Lingling，et al. The study of the moisture effect on gas desorption speed of Yangquan anthracite[J]. Mining Safety，2010，(7)：1–3.(in Chinese)) [15] 王宏图，杜云贵，鲜学福，等. 地球物理场中的煤层瓦斯渗流方程[J]. 岩石力学与工程学报，2002，21(5)：644–646.(WANG Hongtu，DU Yungui，XIAN Xuefu，et al. Seepage equation of coal bed gas in geophysical field[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(5)：644–646.(in Chinese)) [16] ZHU W C，LIU J，SHENG J C. Analysis of coupled gas flow and deformation process with desorption and Klinkenberg effects in coal seams[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(7)：971–980. [17] CLARKSON C R，BUSTIN R M. Binary gas adsorption/desorption isotherms：effect of moisture and coal composition upon carbon dioxide selectivity over methane[J]. International Journal of Coal Geology，2000，42(4)：241–271. [18] MARÍA B DÍAZ AGUADO ，C GONZÁLEZ NICIEZA. Control and prevention of gas outbursts in coal mines，Riosa-Olloniego coalfield，Spain[J]. International Journal of Coal Geology，2007，69(4)：253–266. [19] ROBERT A L. Hydrodynamic and stratigraphic controls for a large coalbed methane accumulation in Ferron coals of east-central Utah[J]. International Journal of Coal Geology，2003，56(1–2)：97–110. [20] CROSDALE P J，MOORE T A，MARES T E. Influence of moisture content and temperature on methane adsorption isotherm analysis for coals from a low-rank，biogenically-sourced gas reservoir[J]. International Journal of Coal Geology，2008，76(3)：166–174.