轴向应力加卸载过程含瓦斯水合物煤体渗透率变化规律研究

doi:10.13722/j.cnki.jrme.2022.0063

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摘要瓦斯水合固化及采掘扰动对瓦斯水合物–煤体介质体系渗透率影响是瓦斯水合固化防突技术应用的关键问题。为此，采用基于出口端流量的稳态法，利用应力–渗流–化学耦合作用含瓦斯水合物煤体三轴试验机，开展含瓦斯煤体渗透试验(3种含水率和3种粒度)及轴向应力加卸载过程含瓦斯水合物煤体渗透试验，分析水合物生成、加卸载过程有效应力及饱和度对煤体渗透率影响规律并初步探讨其影响机制。研究发现，瓦斯水合物形成后，煤体渗透率明显下降，降低幅度为79%～99%；含瓦斯水合物煤体渗透率与有效应力在加卸载过程符合指数函数关系，卸载过程渗透率变化存在3种模式，分别为少量恢复、部分恢复和卸载增透；加卸载过程含瓦斯水合物煤体渗透率损失率、损伤率均随饱和度增大呈增大趋势。试验发现，瓦斯水合物的形成堵塞煤体渗透通道，限制由瓦斯压力降低导致的瓦斯运移补充，有望快速降低瓦斯压力，缩短石门揭煤工期。

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	张保勇1
	于洋1
	高霞2
	吴强1
	张旭辉3
	张强1
	李焕如1

关键词 ：采矿工程, 煤与瓦斯突出, 含瓦斯水合物煤体, 渗透率, 加卸载, 饱和度

Abstract：Key issues still remain in revealing the effect of hydrate formation on coal permeability，as well as the permeability variation subjected to mining exploitation，concerning to the application of the hydrate method. Using steady-state method based on outlet flow，the permeability tests of gas-bearing coal(three water contents and three particle sizes) and subsequently the tests of mine gas hydrate bonded coal for against loading-unloading of axial stresses were conducted，by triaxial testing machine for coupled seepage，chemical and triaxial stress measurements in mine gas hydrate bonded coal. Then，the rule and mechanism are revealed relating to the effect of hydrate formation，effective stress and hydrate saturation on coal permeability. The results show that the coal permeability decreases after hydrate formation by a reduction between 79% and 99%. The permeability varies exponentially with the effective stress under loading-unloading of axial stresses. The variation of the permeability under unloading can be divided into three patterns，including a small amount of permeability recovery，partial permeability recovery and permeability increase. In the process of loading-unloading of axial stress，the permeability loss rate and damage rate increase with the growth in the hydrate saturation for mine gas hydrate bonded coal. As a result，the formation of gas hydrate blocks the coal penetration channel and restricts the coal mine gas migration，which makes it a possible solution to shortening the construction period of rock cross- cut coal，accompanied by gas pressure decrease in a short time.

Key words： mining engineering coal and gas outburst mine gas hydrate bonded coal permeability loading-unloading hydrate saturation

引用本文:

张保勇1，于洋1，高霞2，吴强1，张旭辉3，张强1，李焕如1. 轴向应力加卸载过程含瓦斯水合物煤体渗透率变化规律研究[J]. 岩石力学与工程学报, 2022, 41(11): 2283-2298.
ZHANG Baoyong1，YU Yang1，GAO Xia2，WU Qiang1，ZHANG Xuhui3，ZHANG Qiang1，LI Huanru1. Permeability of mine gas hydrate bonded coal against loading-unloading of axial stress. , 2022, 41(11): 2283-2298.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2022.0063 或 http://rockmech.whrsm.ac.cn/CN/Y2022/V41/I11/2283

[1]	袁亮. 深部采动响应与灾害防控研究进展[J]. 煤炭学报，2021，46(3)：716–725.(YUAN Liang. Research progress of mining response and disaster prevention and control in deep coal mines[J]. Journal of China Coal Society，2021，46(3)：716–725.(in Chinese))
[6]	吴强，李成林，江传力. 瓦斯水合物生成控制因素探讨[J]. 煤炭学报，2005，30(3)：283–287.(WU Qiang，LI Chenglin，JIANG Chuanli. Discussion on the control factors of forming gas hydrate[J]. Journal of China Coal Society，2005，30(3)：283–287.(in Chinese))
[36]	SLOAN E D. Fundamental principles and applications of natural gas hydrates[J]. Nature，2003，426：353–359.
[4]	唐巨鹏，郝娜，潘一山，等. 基于声发射能量分析的煤与瓦斯突出前兆特征试验研究[J]. 岩石力学与工程学报，2021，40(1)：31–42.(TANG Jupeng，HAO Na，PAN Yishan，et al. Experimental study on precursor characteristics of coal and gas outbursts based on acoustic emission energy analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(1)：31–42.(in Chinese))
[8]	邹俊鹏，陈卫忠，杨典森，等. 基于SEM的珲春低阶煤微观结构特征研究[J]. 岩石力学与工程学报，2016，35(9)：1 805–1 814.(ZOU Junpeng，CHEN Weizhong，YANG Diansen，et al. Microstructural characteristics of low-rank coal from Hunchun based on SEM[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(9)：1 805–1 814.(in Chinese))
[11]	许江，李波波，周婷，等. 循环荷载作用下煤变形及渗透特性的试验研究[J]. 岩石力学与工程学报，2014，33(2)：225–234.(XU Jiang，LI Bobo，ZHOU Ting，et al. Experimental study of deformation and seepage characteristics of coal under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(2)：225–234.(in Chinese))
[13]	周宏伟，荣腾龙，牟瑞勇，等. 采动应力下煤体渗透率模型构建及研究进展[J]. 煤炭学报，2019，44(1)：221–235.(ZHOU Hongwei，RONG Tenglong，MOU Ruiyong，et al. Development in modeling approaches to mining-induced permeability of coals[J]. Journal of China Coal Society，2019，44(1)：221–235.(in Chinese))
[15]	贾恒义，王凯，王益博，等. 围压循环加卸载作用下含瓦斯煤体渗透特性试验研究[J]. 煤炭学报，2020，45(5)：1 710–1 718.(JIA Hengyi，WANG Kai，WANG Yibo，et al. Permeability characteristics of gas-bearing coal specimens under cyclic loading-unloading of confining pressure[J]. Journal of China Coal Society，2020，45(5)：1 710–1 718.(in Chinese))
[17]	程远平，刘洪永，郭品坤，等. 深部含瓦斯煤体渗透率演化及卸荷增透理论模型[J]. 煤炭学报，2014，39(8)：1 650–1 658.(CHENG Yuanping，LIU Hongyong，GUO Pinkun，et al. A theoretical model and evolution characteristic of mining-enhanced permeability in deeper gassy coal seam[J]. Journal of China Coal Society，2014，39(8)：1 650–1 658.(in Chinese))
[20]	张小东，刘炎昊，桑树勋，等. 高煤级煤储层条件下的气体扩散机制[J]. 中国矿业大学学报，2011，40(1)：43–48.(ZHANG Xiaodong，LIU Yanhao，SANG Shuxun，et al. Study of the gas diffusion mechanism in high-rank coal reservoirs[J]. Journal of China University of Mining and Technology，2011，40(1)：43–48.(in Chinese))
[22]	李清淼，梁运培，邹全乐. 循环加卸载路径下不同含瓦斯煤渗流及损伤演化特征[J]. 煤炭学报，2019，44(9)：2 803–2 815.(LI Qingmiao，LIANG Yunpei，ZOU Quanle. Seepage and damage evolution characteristics of different gas-bearing coal under cyclic loading-unloading conditions[J]. Journal of China Coal Society，2019，44(9)：2 803–2 815.(in Chinese))
[2]	王炀，何满潮，刘冬桥，等. 深部椭圆形洞室围岩冲击岩爆实验研究[J]. 岩石力学与工程学报，2021，40(11)：2 214–2 228.(WANG Yang，HE Manchao，LIU Dongqiao，et al. Experimental study on impact rockburst of surrounding rock in deep elliptical caverns[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(11)：2 214–2 228.(in Chinese))
[18]	祝捷，王学，于鹏程，等. 有效应力对煤体变形和渗透性的影响研究[J]. 岩石力学与工程学报，2017，36(9)：2 213–2 219.(ZHU Jie，WANG Xue，YU Pengcheng，et al. Effects of the effective stress on deformation and permeability of coal[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(9)：2 213–2 219.(in Chinese))
[24]	王登科，魏建平，尹光志. 复杂应力路径下含瓦斯煤渗透性变化规律研究[J]. 岩石力学与工程学报，2012，31(2)：303–310.(WANG Dengke，WEI Jianping，YIN Guangzhi. Investigation on change rule of permeability of coal containing gas under complex stress paths[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(2)：303–310.(in Chinese))
[27]	ZHANG Z，ZHANG R，XIE H，et al. Mining-induced coal permeability change under different mining layouts[J]. Rock Mechanics and Rock Engineering，2016，49(9)：3 753–3 768.
[29]	马慧龙，阴良魁，汪华军，等. 含水合物细粒土的渗透特性[J]. 土工基础，2020，34(4)：563–566.(MA Huilong，YIN Liangku，WANG Huajun，et al. Permeability fine-grained soils with natural gas hydrate[J]. Soil Engineering and Foundation，2020，34(4)：563–566.(in Chinese))
[31]	吴丹梅，李刚，李小森，等. 不同水合物饱和度下渗透率变化特性的实验研究[J]. 化工进展，2017，36(8)：2 916–2 923.(WU Danmei，LI Gang，LI Xiaosen，et al. Experimental investigation of permeability characteristics under different hydrate saturation[J]. Chemical Industry and Engineering Progress，2017，36(8)：2 916–2 923.(in Chinese))
[33]	LI C H，ZHAO Q，XU H J，et al. Relation between relative permeability and hydrate saturation in Shenhu area，South China Sea[J]. Applied Geophysics，2014，11(2)：207–214.
[9]	孙光中，荆永滨，张瑞林，等. 轴向应力循环加卸载作用下含瓦斯煤渗透性研究[J]. 岩石力学与工程学报，2016，35(5)：928–938.(SUN Guangzhong，JING Yongbin，ZHANG Ruilin，et al. Permeability of coal samples containing methane under cyclic loading-unloading of axial stresses[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(5)：928–938.(in Chinese))
[25]	张东明，齐消寒，宋润权，等. 采动裂隙煤岩体应力与瓦斯流动的耦合机制[J]. 煤炭学报，2015，40(4)：774–780.(ZHANG Dongming，QI Xiaohan，SONG Runquan，et al. Coupling mechanism of rock mass stress and gas flow in coal mining fissures [J]. Journal of China Coal Society，2015，40(4)：774–780.(in Chinese))
[34]	PRIEST J A，DRUCE M，ROBERTS J，et al. PCATS Triaxial：A new geotechnical apparatus for characterizing pressure cores from the Nankai Trough，Japan[J]. Marine and Petroleum Geology，2015，66：460–470.
[38]	高霞，刘文新，高橙，等. 含瓦斯水合物煤体强度特性三轴试验研究[J]. 煤炭学报，2015，40(12)：2 829–2 835.(GAO Xia，LIU Wenxin，GAO Cheng，et al. Triaxial shear strength of methane hydrate-bearing coal[J]. Journal of China Coal Society，2015，40(12)：2 829–2 835.(in Chinese))
[40]	张保勇，于洋，高霞，等. 卸围压条件下含瓦斯水合物煤体应力–应变特性试验研究[J]. 煤炭学报，2021，46(增1)：281–290.(ZHANG Baoyong，YU Yang，GAO Xia，et al. Stress-strain characteristics of coal mine gas hydrate-coal mixture under confining pressure unloading[J]. Journal of China Coal Society，2021，46(Supp.1)：281–290.(in Chinese))
[41]	颜荣涛，韦昌富，傅鑫晖，等. 水合物赋存模式对含水合物土力学特性的影响[J]. 岩石力学与工程学报，2013，32(增2)：4 115–4 122. (YAN Rongtao，WEI Changfu，FU Xinhui，et al. Influence of occurrence mode of hydrate on mechanical behaviour of hydrate-bearing soils[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：4 115–4 122.(in Chinese))
[43]	刘杰，张永利，崔余岩. 热力耦合作用下含瓦斯煤层渗透特性试验研究[J]. 辽宁工程技术大学学报：自然科学版，2017，36(12)：1 270–1 274.(LIU Jie，ZHANG Yongli，CUI Yuyan. Experimental study on permeability properties of coal containing gas with thermo-mechanical coupling[J]. Journal of Liaoning Technical University：Natural Science，2017，36(12)：1 270–1 274.(in Chinese))
[45]	程远平，刘清泉，任廷祥. 煤力学[M]. 北京：科学出版社，2017：62–63.(CHENG Yuanping，LIU Qingquan，REN Tingxiang. Coal mechanics[M]. Beijing：Science Press，2017：62–63.(in Chinese))
[7]	冯涛，谢雄刚，刘辉，等. 注液冻结法在石门揭煤中防突作用的可行性研究[J]. 煤炭学报，2010，35(6)：937–941.(FENG Tao，XIE Xionggang，LIU Hui，et al. Research on feasibility in preventing the coal and gas outburst by infecting liquid and freezing in uncovering coal seam in cross-cut[J]. Journal of China Coal Society，2010，35(6)：937–941.(in Chinese))
[14]	梁冰，石占山，孙维吉，等. 采动过程中下被保护层煤体变形渗流规律研究[J]. 防灾减灾工程学报，2017，37(5)：842–847.(LIANG Bin，SHI Zhansha，SUN Weiji，et al. Protected coal seam deformation and seepage law research in the process of mining[J]. Journal of Disaster Prevention and Mitigation Engineering，2017，37(5)：842–847.(in Chinese))
[23]	LIANG Y，LI Q，GU Y，et al. Mechanical and acoustic emission characteristics of rock：Effect of loading and unloading confining pressure at the postpeak stage[J]. Journal of Natural Gas Science and Engineering，2017，44：54–64.
[16]	王凯，王亮，杜锋，等. 煤粉粒径对突出瓦斯–煤粉动力特征的影响[J]. 煤炭学报，2019，44(5)：1 369–1 377.(WANG Kai，WANG Liang，DU Feng，et al. Influence of coal powder particle sizes on dynamic characteristics of coal and gas outburst[J]. Journal of China Coal Society，2019，44(5)：1 369–1 377.(in Chinese))
[32]	LIU W G，WU Z R，LI J J，et al. The seepage characteristics of methane hydrate-bearing clayey sediments under various pressure gradients[J]. Energy，2019，191：116507.
[5]	贾荔丹，李波波，李建华，等. 采气–采煤阶段煤岩渗透率演化机制研究[J]. 岩石力学与工程学报，2022，41(1)：132–146.(JIA Lidan，LI Bobo，LI Jianhua，et al. Study on the evolution mechanism of coal permeability during gas production and coal mining[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(1)：132–146.(in Chinese))
[12]	王向宇，周宏伟，钟江城，等. 三轴循环加卸载下深部煤体损伤的能量演化和渗透特性研究[J]. 岩石力学与工程学报，2018，37(12)：2 676–2 684.(WANG Xiangyu，ZHOU Hongwei，ZHONG Jiangcheng，et al. Study on energy evolution and permeability characteristics of deep coal damage under triaxial cyclic loading and unloading conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(12)：2 676–2 684.(in Chinese))
[21]	刘永茜. 循环载荷作用下煤体渗透率演化的实验分析[J]. 煤炭学报，2019，44(8)：2 579–2 588.(LIU Yongqian. Experimental analysis of coal permeability evolution under cyclic loading[J]. Journal of China Coal Society，2019，44(8)：2 579–2 588.(in Chinese))
[28]	宋永臣，黄兴，刘瑜，等. 含甲烷水合物多孔介质渗透性的实验研究[J]. 热科学与技术，2010，9(1)：51–57.(SONG Yongchen，HUANG Xing，LIU Yu，et al. Experimental study of permeability of porous medium containing methane hydrate[J]. Journal of Thermal Science and Technology，2010，9(1)：51–57.(in Chinese))
[37]	胡高伟，李承峰，业渝光，等. 沉积物孔隙空间天然气水合物微观分布观测[J]. 地球物理学报，2014，57(5)：1 675–1 682.(HU Gaowei，LI Chengfeng，YE Yuguang，et al. Observation of gas hydrate distribution in sediment pore space[J]. Chinese Journal of Geophysics，2014，57(5)：1 675–1 682.(in Chinese))
[44]	谢建林，赵阳升. 随温度升高煤岩体渗透率减小或波动变化的细观机制[J]. 岩石力学与工程学报，2017，36(3)：543–551.(XIE Jianlin，ZHAO Yangsheng. Meso-mechanism of permeability decrease or fluctuation of coal and rock with the temperature increase[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(3)：543–551.(in Chinese))
[30]	孙可明，翟诚，辛利伟，等. 不同饱和度水合物沉积物的三轴加载渗透率试验[J]. 天然气工业，2017，37(12)：61–67.(SUN Keming，ZHAI Cheng，XIN Liwei，et al. Triaxial loading permeability experiments on hydrate bearing sediments with different saturations[J]. Natural Gas Industry，2017，37(12)：61–67.(in Chinese))
[39]	王代刚，魏伟，孙静静，等. 水合物降压分解过程中沉积物孔隙结构动态演化规律[J]. 科学通报，2020，65(21)：2 292–2 302. (WANG Daigang，WEI Wei，SUN Jingjing，et al. Dynamic evolution of pore structures of hydrate-bearing sediments induced by step-wise depressurization [J]. Chinese Science Bulletin，2020，65(21)：2 292–2 302.(in Chinese))
[46]	张磊，阚梓豪，薛俊华，等. 循环加卸载作用下完整和裂隙煤体渗透性演变规律研究[J]. 岩石力学与工程学报，2021，40(12)：2 487–2 499.(ZHANG Lei，KAN Zihao，XUE Junhua，et al. Study on permeability law of intact and fractured coal under cyclic loading and unloading[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(12)：2 487–2 499.(in Chinese))
[3]	左建平，陈岩，宋洪强. 深部煤岩组合体破坏行为与非线性模型研究进展[J]. 中南大学学报：自然科学版，2021，52(8)：2 510–2 521. (ZUO Jianping，CHEN Yan，SONG Hongqiang. Study progress of failure behaviors and nonlinear model of deep coal-rock combined body[J]. Journal of Central South University：Science and Technology，2021，52(8)：2 510–2 521.(in Chinese))
[10]	尹光志，蒋长宝，王维忠，等. 不同卸围压速度对含瓦斯煤岩力学和瓦斯渗流特性影响试验研究[J]. 岩石力学与工程学报，2011，30(1)：68–77.(YIN Guangzhi，JIANG Changbao，WANG Weizhong，et al. Experimental study of influence of confining pressure unloading speed on mechanical properties and gas permeability of containing-gas coal rock[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：68–77.(in Chinese))
[19]	王辰霖，张小东，李贵中，等. 循环加卸载作用下不同高度煤样渗透性试验研究[J]. 岩石力学与工程学报，2018，37(10)：2 299–2 308. (WANG Chenlin，ZHANG Xiaodong，LI Guizhong，et al. Experimental study on the permeability of coal samples with different heights under cyclic loading and unloading[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(10)：2 299–2 308.(in Chinese))
[26]	YANG S，YIN P，XU S. Permeability evolution characteristics of intact and fractured shale specimens[J]. Rock Mechanics and Rock Engineering，2021，54(12)：6 057–6 076.
[35]	ZHANG Q，ZHENG J J，ZHANG B Y，et al. Coal mine gas separation of methane via clathrate hydrate process aided by tetrahydrofuran and amino acids[J]. Applied Energy，2021，287：116576.
[42]	吴杨，崔杰，廖静容，等. 不同细颗粒含量甲烷水合物沉积物三轴剪切试验研究[J]. 岩土工程学报，2021，43(1)：156–164.(WU Yang，CUI Jie，LIAO Jingrong，et al. Experimental study on mechanical characteristics of gas hydrate-bearing sands containing different fines[J]. Chinese Journal of Geotechnical Engineering，2021，43(1)：156–164.(in Chinese))
[47]	KLEINBERG R L，FLAUM C，GRIFFIN D D. Deep sea NMR：Methane hydrate growth habit in porous media and its relationship to hydraulic permeability，deposit accumulation，and submarine slope stability[J]. Journal of Geophysical Research Solid Earth，2003，108(B10)：1–12.