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Article(id=1149741768771548135, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149741761771258326, articleNumber=1003-3033(2024)02-0168-08, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2024.02.0710, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1692115200000, receivedDateStr=2023-08-16, revisedDate=1700236800000, revisedDateStr=2023-11-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1752049398844, onlineDateStr=2025-07-09, pubDate=1709049600000, pubDateStr=2024-02-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752049398844, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752049398844, creator=13701087609, updateTime=1752049398844, updator=13701087609, issue=Issue{id=1149741761771258326, tenantId=1146029695717560320, journalId=1146031787341344770, year='2024', volume='34', issue='2', pageStart='1', pageEnd='252', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752049397175, creator=13701087609, updateTime=1756468934610, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1168278645379440971, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149741761771258326, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1168278645379440972, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149741761771258326, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=168, endPage=175, ext={EN=ArticleExt(id=1149741769501357037, articleId=1149741768771548135, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Mechanical properties and hydration mechanism of high-flow sealing hole grouting material, columnId=1149733269173878863, journalTitle=China Safety Science Journal, columnName=Safety engineering technology, runingTitle=null, highlight=null, articleAbstract=

To improve coalbed methane extraction efficiency in deep mines，a high-flow sealing hole grouting material was developed using superfine cement as the base material to overcome issues of commonly used high polymer sealed materials such as high cost and flammable，low permeability of ordinary cement materials，and insufficient strength of paste materials such as fly ash. The hydration mechanism of the developed high-flow sealing grouting material was explored by an experimental study on the material's mechanical properties，combined with the measurements by scanning electron microscope(SEM)and X-ray diffraction(XRD). The results indicated that a large amount of calcium silicate hydrate (C-S-H) gel and ettringite (AFt) crystals were generated in the high-flow sealing grouting material during the initial phase of hydration. Furthermore，the gel particles of hydration products filled the pores of the material with the hydration reaction. Compared to commonly used cement sealing grouting material，the hydration reaction of the developed material was much faster and more complete，and the overall structure was more denser. Moreover，the compressive strength was increased by 3.68%. Therefore，the developed high-flow sealing hole grouting material can maintain the stability of gas extraction boreholes and improve gas extraction efficiency.

, correspAuthors=Yi LU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Xin GUO, Yi LU, Shiliang SHI, He LI, Dafang LI), CN=ArticleExt(id=1149741789944394709, articleId=1149741768771548135, tenantId=1146029695717560320, journalId=1146031787341344770, language=CN, title=高流态封孔注浆材料力学性能及水化机制, columnId=1149733269727526997, journalTitle=中国安全科学学报, columnName=安全工程技术, runingTitle=null, highlight=null, articleAbstract=

为提高深部矿井煤层气抽采效率，针对目前常见的封孔注浆材料存在的高分子封孔材料价格昂贵易燃、普通水泥材料渗透性差、粉煤灰等膏体材料强度不足等问题，采用超细水泥为基料研发一种高流态封孔注浆材料。通过对高流态封孔注浆材料开展力学性能试验研究、结合扫描电镜(SEM)、X射线衍射(XRD)等一系列试验的结果，揭示新型高流态封孔注浆材料水化机制。结果表明：高流态封孔注浆材料在水化初期就生成大量的水化硅酸钙(C-S-H)凝胶和钙矾石(AFt)晶体；随着水化反应的持续，水化产物的凝胶粒子充填材料中的孔隙。与普通水泥封孔注浆材料相比，材料的水化反应更迅速、更充分、整体结构致密，比普通水泥封孔注浆材料抗压强度提高3.68%，更有利于保持瓦斯抽采钻孔的稳定性，提高瓦斯抽采效率。

, correspAuthors=鲁义, authorNote=null, correspAuthorsNote=
** 鲁义(1986—)，男，江西新干人，博士，教授，主要从事火灾科学与技术和煤自燃与瓦斯复合灾害防治等方面的研究。E-mail：。
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郭 鑫 (1994—)，男，山东菏泽人，博士，讲师，主要从事矿井灾害防治等方面的研究。E-mail：。

施式亮 教授

李 贺 副教授

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郭 鑫 (1994—)，男，山东菏泽人，博士，讲师，主要从事矿井灾害防治等方面的研究。E-mail：。

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郭 鑫 (1994—)，男，山东菏泽人，博士，讲师，主要从事矿井灾害防治等方面的研究。E-mail：。

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施式亮 教授

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施式亮 教授

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李 贺 副教授

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journalId=1146031787341344770, articleId=1149741768771548135, language=CN, label=图9, caption=不同材料水化7天的TG-DTG曲线, figureFileSmall=e7i/zYJvPhEDWThQJseqmA==, figureFileBig=qsZkirLR+YYQVKG7c35HUg==, tableContent=null), ArticleFig(id=1168128953798631562, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149741768771548135, language=EN, label=Fig.10, caption=Thermogravimetric analysis curves of different materials after hydration of 28 days, figureFileSmall=VU2BWPDqoCv8ovYbkJzpBw==, figureFileBig=+PHjrkJKf5sgHWZ+u3VdKA==, tableContent=null), ArticleFig(id=1168128953853157515, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149741768771548135, language=CN, label=图10, caption=不同材料水化28天的热重分析曲线, figureFileSmall=VU2BWPDqoCv8ovYbkJzpBw==, figureFileBig=+PHjrkJKf5sgHWZ+u3VdKA==, tableContent=null), ArticleFig(id=1168128953928654988, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149741768771548135, language=EN, label=Tab.1, caption=

Chemical compositions of high flow sealing material

, figureFileSmall=null, figureFileBig=null, tableContent=
化学成分 SiO2 Al2O3 Fe2O3 CaO MgO SO3 损失量 共计
HCSA膨胀剂 4.96 8.52 0.99 64.18 2.67 16.97 1.19 99.48
超细硅酸盐水泥 20.57 9.89 3.08 57.65 2 2.7 2.6 98.49
), ArticleFig(id=1168128954008346765, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149741768771548135, language=CN, label=表1, caption=

高流态封孔材料化学组成

, figureFileSmall=null, figureFileBig=null, tableContent=
化学成分 SiO2 Al2O3 Fe2O3 CaO MgO SO3 损失量 共计
HCSA膨胀剂 4.96 8.52 0.99 64.18 2.67 16.97 1.19 99.48
超细硅酸盐水泥 20.57 9.89 3.08 57.65 2 2.7 2.6 98.49
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高流态封孔注浆材料力学性能及水化机制
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郭鑫 1 , 鲁义 1, 2, ** , 施式亮 1 , 李贺 1 , 李大芳 1
中国安全科学学报 | 安全工程技术 2024,34(2): 168-175
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中国安全科学学报 | 安全工程技术 2024, 34(2): 168-175
高流态封孔注浆材料力学性能及水化机制
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郭鑫1 , 鲁义1, 2, ** , 施式亮1, 李贺1, 李大芳1
作者信息
  • 1 湖南科技大学 资源环境与安全工程学院，湖南 湘潭 411201
  • 2 湖南科技大学 南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室，湖南 湘潭 411201

    • 郭 鑫 (1994—)，男，山东菏泽人，博士，讲师，主要从事矿井灾害防治等方面的研究。E-mail：。

    施式亮 教授

    李 贺 副教授

通讯作者:

** 鲁义(1986—)，男，江西新干人，博士，教授，主要从事火灾科学与技术和煤自燃与瓦斯复合灾害防治等方面的研究。E-mail：。
Mechanical properties and hydration mechanism of high-flow sealing hole grouting material
Xin GUO1 , Yi LU1, 2, ** , Shiliang SHI1, He LI1, Dafang LI1
Affiliations
  • 1 School of Resource，Environment and Safety Engineering，Hunan University of Science and Technology，Xiangtan Hunan 411201，China
  • 2 Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines，Hunan University of Science and Technology，Xiangtan Hunan 411201，China
出版时间: 2024-02-28 doi: 10.16265/j.cnki.issn1003-3033.2024.02.0710
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摘要
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为提高深部矿井煤层气抽采效率，针对目前常见的封孔注浆材料存在的高分子封孔材料价格昂贵易燃、普通水泥材料渗透性差、粉煤灰等膏体材料强度不足等问题，采用超细水泥为基料研发一种高流态封孔注浆材料。通过对高流态封孔注浆材料开展力学性能试验研究、结合扫描电镜(SEM)、X射线衍射(XRD)等一系列试验的结果，揭示新型高流态封孔注浆材料水化机制。结果表明：高流态封孔注浆材料在水化初期就生成大量的水化硅酸钙(C-S-H)凝胶和钙矾石(AFt)晶体；随着水化反应的持续，水化产物的凝胶粒子充填材料中的孔隙。与普通水泥封孔注浆材料相比，材料的水化反应更迅速、更充分、整体结构致密，比普通水泥封孔注浆材料抗压强度提高3.68%，更有利于保持瓦斯抽采钻孔的稳定性，提高瓦斯抽采效率。

高流态封孔  /  注浆材料  /  抽采钻孔  /  水化反应  /  水化产物

To improve coalbed methane extraction efficiency in deep mines，a high-flow sealing hole grouting material was developed using superfine cement as the base material to overcome issues of commonly used high polymer sealed materials such as high cost and flammable，low permeability of ordinary cement materials，and insufficient strength of paste materials such as fly ash. The hydration mechanism of the developed high-flow sealing grouting material was explored by an experimental study on the material's mechanical properties，combined with the measurements by scanning electron microscope(SEM)and X-ray diffraction(XRD). The results indicated that a large amount of calcium silicate hydrate (C-S-H) gel and ettringite (AFt) crystals were generated in the high-flow sealing grouting material during the initial phase of hydration. Furthermore，the gel particles of hydration products filled the pores of the material with the hydration reaction. Compared to commonly used cement sealing grouting material，the hydration reaction of the developed material was much faster and more complete，and the overall structure was more denser. Moreover，the compressive strength was increased by 3.68%. Therefore，the developed high-flow sealing hole grouting material can maintain the stability of gas extraction boreholes and improve gas extraction efficiency.

high-flow sealing  /  grouting material  /  drainage borehole  /  hydration reaction  /  hydration product
郭鑫, 鲁义, 施式亮, 李贺, 李大芳. 高流态封孔注浆材料力学性能及水化机制. 中国安全科学学报, 2024 , 34 (2) : 168 -175 . DOI: 10.16265/j.cnki.issn1003-3033.2024.02.0710
Xin GUO, Yi LU, Shiliang SHI, He LI, Dafang LI. Mechanical properties and hydration mechanism of high-flow sealing hole grouting material[J]. China Safety Science Journal, 2024 , 34 (2) : 168 -175 . DOI: 10.16265/j.cnki.issn1003-3033.2024.02.0710
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0 引言
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中共二十大报告中指出，要加快构建新型能源体系，我国煤层气资源丰富，煤层气做为一种清洁能源，对满足民生和生产用能需求有重大意义[1]。遗憾的是，我国60%以上的抽采钻孔使用有效期小于一个月，导致矿井煤层气抽采效率不高，因此，迫切需要提高煤层气抽采钻孔的封孔质量[2]。
封孔注浆材料的性质决定了抽采钻孔的封孔质量，封孔注浆材料本身具有一定的强度，能够有效防止钻孔变形破坏，提高煤矿煤层气抽采率[3]。关于封孔材料研制方面，国内外众多学者开展了大量的研究，并取得了丰富的研究成果，如李树刚等[4-5]改性处理了普通硅酸盐水泥，通过加入铝粉等材料，组成一种新型膨胀水泥，优化了普通水泥材料的膨胀性能和流动性；王志明等[6]以普通硅酸盐水泥为基料，与膨胀剂复配研发了一种能够二次膨胀的封孔注浆材料；HOGANCAMP等[7]将碳纳米纤维加入到硅酸盐水泥中，降低了水泥材料开裂性能；孙文标等[8]以无水硫铝酸钙等无机材料开发了封孔注浆材料，并测定十二烷基硫酸钠(Sodium Dodecyl Sulfate，SDS)对该材料的性能影响特征；曹明莉等[9]研究了聚乙烯醇纤维及钢纤维对水泥砂浆流变性能的影响；王慧涛等[10]研究了煤矸石注浆材料的配制。但随着我国煤炭资源开采深度的增加，煤体所受应力增加，钻孔周围的煤体更易碎裂，从而影响钻孔的稳定性[11-12]。因此，需要通过注浆加固碎裂煤体，提高碎裂煤体的力学性能[13]。
鉴于此，笔者拟针对深部矿井岩体力学强度低、抽采钻孔易变形的特点，以超细水泥为基料研制出一种高流态封孔注浆材料，并研究高流态封孔注浆材料的力学性能与水化机制，增加瓦斯抽采钻孔使用寿命，以期提高瓦斯抽采率。
1 高流态封孔注浆材料制备
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1.1 原材料
新型高流态封孔注浆材料以超细硅酸盐水泥为基料，原材料化学组成见表1。试验所用的膨胀剂为氧化钙-硫酸钙复合膨胀剂(High Performance Calcium Sulpho Aluminate，HCSA)，外观为灰白色粉末，化学组成见表1。试验所用聚羧酸减水剂为白色粉末状，易溶于水，减水率为20%~35%。试验所用的缓凝剂为海菜粉，外观为白色粉末，在使用时，将缓凝剂和水按照1∶130的质量比配制成溶液。
1.2 试验参数与过程
试验时，准备模具(70.7×70.7×70.7)，按照表2的配比计算外加剂的质量及水的质量，将缓凝剂提前配置成溶液，再按照水灰比1.0，缓凝剂0.04%、减水剂0.5%、膨胀剂8%称取超细水泥、膨胀剂和减水剂，加入提前配置好的缓凝剂，与水进行充分的搅拌后倒入模具，放入养护箱进行养护，养护不同时间后脱模。使用压力机，测试高流态封孔注浆材料的抗压强度；采用同步热分析仪分析不同材料水化产物及自由水、结晶水等物质质量的变化，初始温度0℃，终止温度800℃，升温速度10℃/min。保护气体为氮气；使用X射线衍射(X-Ray Diffraction，XRD)仪进行物相分析，试验扫描速度为8°/min，扫描范围θ为5~90°，测试温度为常温；采用环境扫描电镜(Scanning Electron Microscope，SEM)，观察不同封孔注浆材料的微观形貌；同时使用热重分析仪(Thermogravimetric Analysis，TGA)，研究材料的热稳定性和组分；材料制备与试验流程如图1所示。
2 高流态封孔注浆材料力学性能
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高流态封孔注浆材料与普通水泥封孔注浆材料的抗压强度变化如图2所示。由图2可知：高流态封孔注浆材料与普通水泥封孔注浆材料的抗压强度随着养护期龄的增加而增加，在养护前期，高流态封孔注浆材料的抗压强度明显高于普通水泥封孔注浆材料的抗压强度，养护期龄为3天时，2种材料抗压强度分别为14.377和28.511MPa，新型高流态封孔注浆材料抗压强度是普通水泥封孔注浆材料抗压强度的的2倍；当养护期龄达到7天时，2种材料抗压强度分别为19.013和32.026MPa，新型高流态封孔注浆材料抗压强度提高68.4%;养护期龄为 28天时，2种材料抗压强度分别为28.785和40.213MPa，新型高流态封孔注浆材料抗压强度提高39.7%。
3 高流态封孔注浆材料水化机制
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3.1 高流态封孔注浆材料微观形貌
利用SEM观察普通水泥封孔注浆材料以及新型高流态封孔注浆材料的微观形貌随时间的变化。普通水泥封孔注浆材料水化后的SEM结果如图3所示。从图3可以看出，在养护前期，普通水泥封孔注浆材料的水化产物之间存在较多的空隙，结构较为疏松，这也导致普通水泥封孔注浆材料的抗压强度较低；随着水化反应的进行，水化产物中出现了越来越多的水化硅酸钙(C-S-H)凝胶以及钙矾石(AFt)晶体，这些凝胶相和晶体填充了水泥颗粒之间的空隙，结构更加致密，提升了材料的抗压强度；在养护后期，生成了大量的AFt晶体，这些晶体为材料提供了更高的抗压强度。新型高流态封孔注浆材料水化产物的SEM结果如图4所示。从图4可以看出，在养护的前期，新型高流态封孔注浆材料就生成了大量的C-S-H凝胶和氢氧化钙(Ca(OH)2)，C-S-H凝胶相互交织，填充了水泥颗粒之间的空隙，使得材料的整体结构致密，以及高流态封孔注浆材料在早期就能有较大的抗压强度；随着水化反应的持续进行，水化产物中出现了更多的C-S-H凝胶以及AFt晶体，微观结构更加致密，为高流态封孔注浆材料在养护中期提供了较大的抗压强度；在养护后期，高流态封孔注浆材料继续水化反应，水化产物之间相互作用生成单硫型水化硫铝酸钙等，C-S-H凝胶的数量越来越多，与前期生成的AFt等胶凝物质结合在一起提高了高流态封孔注浆材料在养护后期的抗压强度[14]。
3.2 高流态封孔注浆材料水化产物的XRD分析
水化3天XRD结果如图5所示。由图5可知：在水化3天时，高流态封孔注浆材料水化产物的Ca(OH)2衍射峰值明显高于普通水泥封孔注浆材料，说明高流态封孔注浆材料水化产物中Ca(OH)2钙的含量较高，与高流态封孔注浆材料微观形貌展现的特征相同。此外，高流态封孔注浆材料水化体系与普通水泥封孔注浆材料相比还存在AFt衍射峰，说明此时高流态封孔注浆材料水化反应产生了钙矾石。表明高流态封孔注浆材料的水化更加充分，而普通水泥封孔注浆材料水化产生了少量的Ca(OH)2和C-S-H凝胶，矿物并未充分反应，导致普通水泥封孔注浆材料的抗压强度较低[15]。
水化7天XRD结果如图6所示。由图6可知：在水化7天时，高流态封孔注浆材料水化产物的Ca(OH)2和C-S-H的衍射峰逐渐降低，而普通水泥封孔注浆材料的水化产物Ca(OH)2和C-S-H的衍射峰逐渐增大，表明随着水化反应的进行，普通水泥封孔注浆材料的矿物持续反应，水化产物中生成大量的Ca(OH)2和Ca(OH)2；而高流态封孔注浆材料在前期充分反应，导致产物中Ca(OH)2和C-S-H的含量降低，另外水泥颗粒中存在铝酸三钙(C3A)，其与Ca(OH)2发生反应生成水化铝酸钙(C-A-H)，进而消耗流态封孔注浆材料水化产物中的Ca(OH)2，同时生成的C-S-H和(C-A-H)会覆盖在水泥颗粒表面，阻碍了水泥熟料的进一步水化。
水化28天XRD结果如图7所示。由图7可知：在水化28天时，随着C-S-H的持续消耗，高流态封孔注浆材料的水化反应加强，水化产物Ca(OH)2的特征衍射峰强度不断增加。与普通水泥封孔注浆材料相比，高流态封孔注浆材料水化产物的图谱中C-A-H凝胶相衍射峰值更大，这说明高流态封孔注浆材料内部的C3A水化反应更充分，生成更为致密的凝胶相，这与抗压强度测试和微观形貌的结果相吻合。
3.3 高流态封孔注浆材料水化产物的TGA
由前期研究结果可知：水泥材料存在3个质量损失峰，第1个阶段(50~100℃)是样品中游离水蒸发、水化产物脱水过程造成质量损失；第2个质量损失峰(400~450℃)是由Ca(OH)2晶体失稳造成的质量损失；第3个质量损失峰是由碳化生成 CaCO3分解生成造成的质量损失。不同材料水化3天的热重(Thermogravimetric，TG)及微商热重(Differential Thermogravimetry，DTG)曲线如图8所示。从图8a中可以看出，高流态封孔注浆材料的TG-DTG曲线有3个明显的吸热峰，在高流态封孔注浆材料水化早期，水泥颗粒与水发生反应，生成C-S-H凝胶和Ca(OH)2，此时水化产物中存在一些游离水，因此，高流态封孔注浆材料TG-DTG 曲线的第一个吸热峰代表水化产物脱去游离水；随着加热温度的升高，水化产物中的C-S-H凝胶和AFt开始发生脱水反应，因此，高流态封孔注浆材料TGA曲线的第2个吸热峰代表C-S-H凝胶和AFt脱水；在400~500℃左右新型高流态封孔注浆材料有明显的失重，为Ca(OH)2脱水反应的吸热峰[16-17]。
从图8b可以看出，有5个明显的吸热峰，前3个吸热峰分别代表普通水泥封孔注浆材料水化产物游离水脱水、C-S-H凝胶和AFt脱水反应、Ca(OH)2脱水反应；当温度到达680℃附近时，出现的吸热峰为碳酸钙分解的吸热峰。从对应的DTG曲线中可以看出，普通水泥封孔注浆材料的C-S-H凝胶和Ca(OH)2吸热峰的峰值温度小于高流态封孔注浆材料，说明普通水泥封孔注浆材料水化产物中C-S-H凝胶和Ca(OH)2的产量较少，其分解脱水所需要的温度也越低，而高流态封孔注浆材料中的C-S-H凝胶、AFt和Ca(OH)2吸热峰的峰值温度较大，分解温度滞后，说明C-S-H凝胶、AFt和Ca(OH)2的含量较多，也表明高流态封孔注浆材料的水化反应充分，生成的水化产物也更多。
不同材料水化7天的TG-DTG曲线如图9所示。从图9可以看出，高流态封孔注浆材料的TG-DTG曲线也存在3个明显的吸热峰，普通水泥封孔注浆材料的TG-DTG曲线有5个明显的吸热峰。高流态封孔注浆材料的Ca(OH)2和C-S-H的吸热峰值温度逐渐降低，而普通水泥封孔注浆材料的Ca(OH)2的吸热峰值温度逐渐增大，表明随着水化反应的进行，普通水泥封孔注浆材料的矿物得到充分的反应，生成了大量的Ca(OH)2，而材料矿物中的C3A与Ca(OH)2发生反应生成C-A-H，进而消耗复合材料内部的Ca(OH)2，因而导致高流态封孔注浆材料的Ca(OH)2吸热峰逐渐降低。
不同材料水化28天的TG-DTG曲线如图10所示。从图10可以看出，随着水化反应的进行，高流态封孔注浆材料的AFt与C-S-H凝胶等水化产物的吸热峰继续增加，Ca(OH)2吸热峰继续减小，说明高流态封孔注浆材料的水化反应比普通水泥封孔注浆材料更充分。
4 结论
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1) 通过SEM结果可知：普通水泥封孔注浆材料硬化后的内部存在大量空隙，微观结构疏松，导致普通水泥封孔注浆材料的抗压强度较低。高流态封孔注浆材料内部孔隙较少，水化产物之间相互作用形成一个整体，微观结构致密，有效增加高流态封孔注浆材料的抗压强度。
2) 通过XRD测试和TGA可知：在水化反应早期，高流态封孔注浆材料的Ca(OH)2和AFt衍射峰值温度高于普通水泥封孔注浆材料，生成了大量代表性水化产物，提高了材料的抗压强度；随着水化反应的继续，高流态封孔注浆材料水化产物的衍射峰值温度不断增加，材料的水化程度逐步提高。
3) 通过抗压强度测试结果可知：高流态封孔注浆材料的最大抗压强度为40.213MPa，而普通水泥封孔注浆材料的最大抗压强度为28.785MPa，高流态封孔注浆材料抗压强度比普通水泥封孔注浆材料提高39.7%。证明高流态封孔注浆材料整体结构致密，水化反应更充分，更有利于煤矿钻孔的封孔注浆。
基金
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  • 国家重大人才工程青年项目(2022QB06801)
  • 湖南省杰出青年基金资助(2022JJ10026)
  • 湖南省青年基金资助(2023JJ40284)
文献
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2024年第34卷第2期
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doi: 10.16265/j.cnki.issn1003-3033.2024.02.0710
  • 接收时间：2023-08-16
  • 首发时间：2025-07-09
  • 出版时间：2024-02-28
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  • 收稿日期：2023-08-16
  • 修回日期：2023-11-18
基金
国家重大人才工程青年项目(2022QB06801)
湖南省杰出青年基金资助(2022JJ10026)
湖南省青年基金资助(2023JJ40284)
作者信息
    1 湖南科技大学 资源环境与安全工程学院，湖南 湘潭 411201
    2 湖南科技大学 南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室，湖南 湘潭 411201

通讯作者:

** 鲁义(1986—)，男，江西新干人，博士，教授，主要从事火灾科学与技术和煤自燃与瓦斯复合灾害防治等方面的研究。E-mail：。
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2种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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