沙基胶结充填材料输送及力学性能优化研究.pdf

国家重点研发计划（2018YFC0604700） 国家自然科学基金（51874287） 工程硕士专业学位论文 沙基胶结充填材料输送及力学性能 优化研究 Study on Transportation and Mechanical Properties Optimization of Sand-based Cemented Filling Materials 作 者欧阳神央 导 师周 楠 副教授 中国矿业大学 二〇一九年五月 万方数据 学位论文使用授权声明学位论文使用授权声明 本人完全了解中国矿业大学有关保留、使用学位论文的规定，同意本人所撰 写的学位论文的使用授权按照学校的管理规定处理 作为申请学位的条件之一， 学位论文著作权拥有者须授权所在学校拥有学位 论文的部分使用权，即①学校档案馆和图书馆有权保留学位论文的纸质版和电 子版，可以使用影印、缩印或扫描等复制手段保存和汇编学位论文；②为教学和 科研目的，学校档案馆和图书馆可以将公开的学位论文作为资料在档案馆、图书 馆等场所或在校园网上供校内师生阅读、浏览。另外，根据有关法规，同意中国 国家图书馆保存研究生学位论文。 （保密的学位论文在解密后适用本授权书） 。 作者签名 导师签名 年 月 日 年 月 日 万方数据 中图分类号 TD741 学校代码 10290 UDC 622 密 级 公开 国家重点研发计划（2018YFC0604700） 国家自然科学基金（51874287） 中国矿业大学 工程硕士专业学位论文 沙基胶结充填材料输送及力学性能优化研究 Study on Transportation and Mechanical Properties Optimization of Sand-based Cemented Filling Materials 作 者 欧 阳 神 央 导 师 周 楠 申请学位 工程硕士专业学位 培养单位 矿业工程学院 学科专业 矿业工程 研究方向 绿色开采 答辩委员会主席 牟宗龙 评 阅 人 盲 评 二〇一九年五月 万方数据 论文审阅认定书论文审阅认定书 研究生 欧阳神央 在规定的学习年限内， 按照研究生培养方案的 要求，完成了研究生课程的学习，成绩合格；在我的指导下完成本学 位论文，经审阅，论文中的观点、数据、表述和结构为我所认同，论 文撰写格式符合学校的相关规定， 同意将本论文作为学位申请论文送 专家评审。 导师签字 年 月 日 万方数据 致致 谢谢 本论文是在 周楠 副教授的精心指导和悉心教诲下完成的， 从论文最初选题 到基础资料的收集直至最终成稿，无不倾注着导师的心血和汗水，使我把握了论 文的写作方向，顺利地完成了论文的写作，在此表示最诚挚的谢意 师从两载，收获颇丰，感触亦深。张吉雄教授和周楠副教授两位导师的谆谆 教诲和亲切关怀历历在目， 让人感念至深； 导师们渊博的学识、 严谨的治学态度、 崇高的敬业精神、宽阔的胸怀、阳光的人生理念，必将在我未来的人生轨迹中起 到指引方向的作用。借此论文完成之际，谨向张老师和周老师致以诚挚的敬意和 祝福 感谢课题组各位老师在论文写作、修改期间给予的指导和帮助；感谢师兄张 强副教授、李猛博士、孙强博士在论文构思方面的帮助，感谢师兄齐文跃博士、 闫浩博士、刘恒凤博士、王佳奇博士和孟国豪博士在试验分析方面给予的帮助； 感谢马昊宾、董超伟、姜超、杜二宝、胡强等师弟在沙基胶结充填材料性能测试 试验过程中给予的帮助 感谢读研期间，我的老师、朋友、师兄、师姐、师弟妹对我工作及生活上的 关心和帮助，因为你们的存在，我的人生才更为美好更加具有意义。老师的教导 我将铭记在心，同窗之间的友谊将永远长存。 需要特别感谢的是我的父母。父母的养育之恩无以为报，他们是我求学路上 的坚强后盾,在我面临人生选择的迷茫之际，为我排忧解难，他们对我无私的爱 与照顾是我不断前进的动力。 衷心感谢学校和矿业工程学院领导及老师们几年来在学习和生活上给予的 我的关心、鼓励和帮助。 感谢本论文所引用文献的作者，是他们的研究成果为我开阔了眼见和思路。 感谢所有帮助和关心我的人。 感谢在百忙之中评审、答辩本论文并提出宝贵意见的各位专家教授。 万方数据 I 摘摘 要要 充填材料作为胶结充填开采技术的核心，决定了充填成本以及充填质量，影 响着充填开采技术的实施与发展。本文针对赵官能源充填矸石来源少，常规充填 开采技术难以实施的难题，提出了以矿区周边广泛赋存、价格低廉的黄河沙作为 充填骨料，掺入部分水泥和粉煤灰作为胶凝材料的沙基胶结充填材料，测试了沙 基胶结充填材料的输送和力学性能指标， 分析了沙基胶结充填材料性能缺陷及致 因，并针对其中存在的不足进行优化，得到了满足煤矿胶结充填开采的新型沙基 胶结充填材料，并探讨了该材料的强度演化规律及其细观结构特征，论文得到的 主要研究成果如下 （1）归纳总结了煤矿胶结充填材料的选择要求，分析了煤矿胶结充填材料 输送及力学性能的具体指标；基于黄河沙、粉煤灰及水泥等原材料物理化学特性 的分析，分析了黄河沙、粉煤灰等作为胶结充填原材料的可行性。 （2）基于正交试验测试的结果，分析了黄河沙、粉煤灰及水泥组成的沙基 胶结充填材料存在的工程性能缺陷及其致因， 研究了沙基胶结充填材料输送及力 学性能影响因素的主次顺序，得到了沙基胶结充填材料的最优配比。 （3）利用减水剂和生石灰作为优化材料，设计了单掺和复掺试验，研究了 减水剂、生石灰在单掺和复掺条件下对沙基胶结充填材料工程性能的优化效果， 得到了满足要求的新型沙基胶结充填材料，确定了各充填材料的最佳掺量，并分 析了该充填材料的成本。 （4）基于沙基胶结充填材料优化前后的最优配比，测试分析了两种材料的 强度特性，探究了新型沙基胶结充填材料的强度演化规律及其细观结构特征。 文章的研究成果得到了满足煤矿胶结充填开采要求的新型沙基胶结充填材 料，扩大了胶结充填材料的选择范围，为类似缺乏充填材料来源的煤矿充填开采 提供了新途径，进一步拓展了充填开采方法的适用范围。 该论文有图 39 幅，表 27 个，参考文献 98 篇。 关键词关键词沙基胶结充填材料；正交试验；输送性能；力学性能 万方数据 II Abstract As the core of cemented and filling mining technology, filling materials determine the filling cost and filling quality, which affects the implementation and development of filling mining technology. This paper aims at the problem that filling gangue in some mining areas in China has few sources and conventional filling mining technology is difficult to implement. The Yellow River sand, which is widely distributed around the mining area and cheap in price, is used as the filling aggregate, and part of cement and fly ash are added as the sand base consolidation filling material. The transport and mechanical perance inds of the sand base cemented filling material are tested, and the perance defects and causes of the sand base consolidation filling material are analyzed. Optimized the shortcomings of sand-based cemented filling materials and a new type of sand-base cemented filling material for coal mine filling mining is obtained. The strength evolution and hydration mechanism of the material were also discussed. The research results obtained in the paper are as follows 1 The selection requirements of coal mine cemented filling materials are summarized, and the transport and mechanical properties of coal mine cemented filling materials are analyzed. Based on the physical and chemical characteristics of raw materials such as Yellow River sand, fly ash and cement, the feasibility of Yellow River sand and fly ash as raw materials for cementing and filling was analyzed. 2 Based on the structure tested by orthogonal test, the engineering perance defects and their causes of the sand-base cemented filling materials composed of Yellow River sand, fly ash and cement are analyzed. The main and secondary factors affecting transport and mechanical properties of sand-base cemented filling materials were studied. 3 Using water reducer and quicklime as optimization material,The single admixture and mixed admixture test was designed, and the effects of water reducer and quicklime on the engineering properties of sand-base cemented filling materials were studied under the condition of single admixture and mixed admixture. A new type of sand-based cementing filling material was obtained, which determined the optimum dosage of each filling material and analyzed the cost of the filling material. 4 Based on the optimal ratio of sand-base cemented filling materials before and after optimization, the strength characteristics of the two materials were tested and analyzed, and the strength evolution and microstructure characteristics of the new sand- base cemented filling materials were explored. 万方数据 III The research results of this paper have obtained a new type of sand-base cemented filling material that meets the requirements of coal mine consolidation and filling mining, expanded the selection range of cemented filling material, provided a new way for coal mine mining in similar areas lacking filling material, and further expanded the applicable scope of filling mining . The paper has 39 figures, 27 tables and 98 references Key words Sand-based cemented filling materials; Orthogonal test; Transportation properties; Mechanical properties 万方数据 IV 目目 录录 摘摘 要要 ........................................................................................................................... I 目目 录录 ........................................................................................................................ IV 图清单图清单 ..................................................................................................................... VIII 表清单表清单 .......................................................................................................................... X 变量注释表变量注释表 ............................................................................................................... XII 1 绪论绪论 ........................................................................................................................... 1 1.1 研究背景与意义..................................................................................................... 1 1.2 国内外研究现状..................................................................................................... 2 1.3 研究内容与技术路线............................................................................................. 5 1.4 主要研究成果......................................................................................................... 6 2 煤矿胶结充填材料工程性能指标煤矿胶结充填材料工程性能指标 ........................................................................... 8 2.1 胶结充填材料选择要求及组成............................................................................. 8 2.2 胶结充填材料工程性能指标................................................................................. 9 2.3 本章小结............................................................................................................... 13 3 沙基胶结充填材料工程性能测试方案沙基胶结充填材料工程性能测试方案 ................................................................. 14 3.1 实验材料及主要设备........................................................................................... 14 3.2 多因素混合正交试验方案与测试方法............................................................... 19 3.3 本章小结............................................................................................................... 24 4 沙基胶结充填材料工程性能及其影响因素沙基胶结充填材料工程性能及其影响因素 ......................................................... 25 4.1 沙基胶结充填材料工程性能正交试验结果....................................................... 25 4.2 沙基胶结充填材料输送性能影响因素分析....................................................... 27 4.3 沙基胶结充填材料力学性能影响因素分析....................................................... 31 4.4 沙基胶结充填材料的缺陷及致因分析............................................................... 36 4.5 本章小结............................................................................................................... 37 5 沙基胶结充填材料配比优化试验研究沙基胶结充填材料配比优化试验研究 ................................................................. 38 5.1 沙基胶结充填材料优化思路及方案................................................................... 38 5.2 沙基胶结充填材料输送性能优化分析............................................................... 40 5.3 沙基胶结充填材料力学性能优化分析............................................................... 44 万方数据 V 5.4 沙基胶结充填材料优化配比及成本概算........................................................... 48 5.5 本章小结............................................................................................................... 49 6 新型沙基胶结充填材料强度演化规律及细观结构新型沙基胶结充填材料强度演化规律及细观结构特征分析特征分析 .............................. 50 6.1 新型沙基胶结充填材料强度演化规律............................................................... 50 6.2 沙基胶结充填材料细观结构特征分析............................................................... 53 6.3 本章小结............................................................................................................... 58 7 结论与展望结论与展望 ............................................................................................................. 59 7.1 主要结论............................................................................................................... 59 7.2 展望....................................................................................................................... 60 参考文献参考文献 ..................................................................................................................... 61 作者简历作者简历 ..................................................................................................................... 67 学位论文原创性声明学位论文原创性声明 ................................................................................................. 69 万方数据 VI Contents Abstract ........................................................................................................................ II Contents ..................................................................................................................... VI List of Figures ......................................................................................................... VIII List of Tables ................................................................................................................ X List of Variables........................................................................................................ XII 1 Introduction ............................................................................................................... 1 1.1 Background and Significance .................................................................................. 1 1.2 Research Status ........................................................................................................ 2 1.3 Research Contents and s .............................................................................. 5 1.4 Main Conclusions .................................................................................................... 6 2 Engineering Perance Index of Coal Mine Cemented Filling Materials ....... 8 2.1 Selection Requirements and Composition of Cemented Filling Materials .............. 8 2.2 Engineering Perance Index of Cemented Filling Material ............................... 9 2.3 Chapter Summary .................................................................................................. 13 3 Engineering Perance Test Scheme of Sand - based Cemented Filling Materials ..................................................................................................................... 14 3.1 Experimental Materials and Main Equipment ....................................................... 14 3.2 Scheme and of Multifactor Mixed Orthogonal Test ................................. 19 3.3 Chapter Summary .................................................................................................. 24 4 Engineering Perance and Influencing Factors of Sand - based Cemented Filling Materials ......................................................................................................... 25 4.1 Orthogonal test Results of Engineering Perance of Sand-based Cemented Filling Materials ........................................................................................................... 25 4.2 Analysis of Influencing Factors of Transportation Properties of Sand-based Cemented Filling Materials.......................................................................................... 27 4.3 Analysis of Influencing Factors of Mechanical Properties of Sand-based Cemented Filling Materials ........................................................................................................... 31 4.4 Deficiency and Reasons of Sand-based Cemented Filling Materials .................... 36 4.5 Chapter Summary .................................................................................................. 37 万方数据 VII 5 Research on Proportioning Optimization Test of Sand-based Cemented Filling Materials ..................................................................................................................... 38 5.1 Optimization Thinking and Scheme of Sand-based Cemented Filling Materials .. 38 5.2 Optimization and Analysis of Transportation Properties of Sand-based Cemented Filling Materials ........................................................................................................... 40 5.3 Optimization and Analysis of Mechanical Properties of Sand-based Cemented Filling Materials ........................................................................................................... 44 5.4 Rough Cost and Recommended Optimized Proportion of Sand-based Cemented Filling Materials ........................................................................................................... 48 5.5 Chapter Summary .................................................................................................. 49 6 Strength Evolution Law and Microstructural Features of New Sand-based Cemented Filling Materials .....................................................................