采空区治理再生骨料浆液物理性能及长期强度特性研究
Study on physical properties and long term strength characteristics of recycled aggregate slurry for goaf governance
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摘要: 为解决部分地区采空区充填材料供应不足，以城市建筑固废为原材料，加工成再生骨料，代替部分粉煤灰制成新型充填浆液，测试其物理性能及不同养护条件下强度特性。结果表明：新型充填浆液凝结时间满足注浆要求，随着骨料比例的增加，浆液结石率呈减小趋势、流动度呈增加趋势；当水固比为1∶1.2，再生骨料代替粉煤灰比例在50%以下时，浆液结石率、流动度均良好，当代替比例大于70%时，浆液有离析现象；2组浆液结石体28 d抗压强度都远大于2 MPa、90 d长期强度值最小为3.59 MPa、最大值可达7.93 MPa，纯水泥粉煤灰浆液结石体各龄期抗压强度大于其它添加再生骨料的组别；同配比时，结石体短期抗压强度值水下养护大于标准养护。水固比为1∶2和1∶3的高浓度浆液，物理性能良好，长期强度值最大可达15.94 MPa。结合研究结果，分析论述了不同采空条件下浆液配比的优选，并应用于实际采空区充填治理工程。Abstract: In order to solve the problem of insufficient supply of filling materials at goaf in some areas, in this paper, urban construction solid waste is used as raw material to process recycled aggregate, which is used to replace part of fly ash to make new filling slurry, and its physical and strength characteristics under different curing conditions were tested. The results show that the setting time of the new filling slurry meets the requirements of grouting. With the increase of the aggregate proportion, the stone rate of the slurry decreases and the fluidity increases. When the water-solid ratio is 1∶1.2 and the proportion of recycled aggregate replacing fly ash is below 50%, the stone rate and fluidity of the slurry are good; when the replacement ratio is more than 70%, the slurry has segregation phenomenon; the 28 d compressive strength of the two groups of slurry stones is much greater than 2 MPa, and the 90 day long-term strength value is 3.59 MPa at the minimum and 7.93 MPa at the maximum, in addition, the compressive strength of pure cement fly ash slurry stone body at each age is greater than that of other groups with recycled aggregate. Under the same ratio, the short-term compressive strength of the stone body under water curing is greater than that under standard curing. The high concentration slurry with water solid ratio of 1∶2 and 1∶3 has good physical properties, and the maximum long-term strength can reach 15.94 MPa. Combined with the research results, the optimization of slurry ratio under different goaf conditions was analyzed and discussed, and it was applied to the actual goaf filling treatment project.
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[1] 朱世彬，王晓东，许刚刚，等．煤矿采空区充填高浓度胶结材料流变特性试验研究[J]．煤炭科学技术，2017， 45（11）：69－73. ZHU Shibin, WANG Xiaodong, XU Ganggang, et al. Experimental study on rheological properties of high concentration cementing materials in coal mine goaf filling[J]. Coal Science and Technology, 2017, 45（11）: 69-73.
[2] 王东昊，李文，张彬．煤矿采空区失稳灾害防控技术研究现状及展望[J]．煤矿安全，2020，51（3）：188－193. WANG Donghao, LI Wen, ZHANG Bin. Present situation and prospect of research on prevention and control technologies of coal mine goaf instablility disaster[J]. Safety in Coal Mines, 2020, 51（3）: 188-193.
[3] 孙魁，李永红，刘海南，等．彬长矿区“对滑型”黄土滑坡及其形成机制[J]．煤炭学报，2017，42（11）：2989. SUN Kui, LI Yonghong, LIU Hainan, et al. “Opposite-slide” loess landslides and its formation mechanism in Binchang mining area[J]. Journal of China Coal Society, 2017, 42（11）: 2989.
[4] 刘钟森，宋勇军，赵文涛，等．基于地基变形控制的采空区地面塌陷地质灾害防治[J]．科学技术与工程，2019，19（26）：101－106. LIU Zhongsen, SONG Yongjun, ZHAO Wentao, et al. Prevention of geologic hazard in goaf based on foundation deformation control[J]. Science Technology and Engineering, 2019, 19（26）: 101-106.
[5] 王彦君．煤矿采空区场地注浆设计及治理效果检测分析[J]．中国煤炭地质，2017，29（11）：54－59. WANG Yanjun. Coalmine worked-out area site grouting design,governing effect detection and analysis[J]. Coal Geology of China, 2017, 29（11）: 54-59.
[6] 苟德明，田娇，李佳佳，等．高速公路隧道下伏小煤窑采空区洞内注浆处治技术[J]．林业工程学报，2018，3（5）：142－149. GOU Deming, TIAN Jiao, LI Jiajia, et al. Grouting treatment technology of small coal mine goaf beneath expressway tunnel[J]. Journal of Forestry Engineering, 2018, 3（5）: 142-149.
[7] 邹友平．煤矿采空区高掺量粉煤灰注浆扩散机理及应用[D]．北京：煤炭科学研究总院，2016：13－14. [8] 刘音，王凯，李浩，等．大掺量粉煤灰浆体充填材料流动特性研究[J]．矿业研究与开发，2019，39（5）：110. LIU Yin, WANG Kai, LI Hao, et al. Study on flow characteristics of slurry filling material with large amount of fly ash[J]. Mining Research and Development, 2019, 39（5）: 110-114.
[9] 陈凯，陈清通，孙庆先，等．大同采煤沉陷区光伏示范基地建设采空区注浆治理技术应用[J]．煤矿安全，2018，49（8）：169－172. CHEN Kai, CHEN Qingtong, SUN Qingxian, et al. Application of grouting treatment technology in goaf for photovoltaic demonstration base in Datong coal mining subsidence area[J]. Safety in Coal Mines, 2018, 49（8）: 169-172.
[10] 张曼曼，鲁海峰，年宾，等．地面注浆加固顶板高掺量粉煤灰水泥浆液材料性能研究[J]．煤矿安全，2020， 51（6）：60－65. ZHANG Manman, LU Haifeng, NIAN Bin, et al. Study on performance of cement slurry material with high fly ash content for roof reinforcement by grouting on the ground[J]. Safety in Coal Mines, 2020, 51（6）: 60-65.
[11] 周盛全，陈伟，李剑伟，等．低钙粉煤灰－水泥浆液可注性试验研究[J]．硅酸盐通报，2021，40（5）：1554. ZHOU Shengquan, CHEN Wei, LI Jianwei, et al. Experimental study on groutability of low calcium fly ash-cement slurry[J]. Bulletin of the Chinese Ceramic Society, 2021, 40（5）: 1554-1563.
[12] 张开诚，张超，王德全，等．高掺量粉煤灰注浆材料在采空区治理中的应用[J]．有色金属（矿山部分），2021，73（2）：39－46. ZHANG Kaicheng, ZHANG Chao, WANG Dequan, et al. Application of high content fly ash grouting material in goaf treatment[J]. Nonferrous Metals（Mining Section）, 2021, 73（2）: 39-46.
[13] 孙国文，汤青青，张丽娟，等．大掺量粉煤灰早期活性激发及其作用机理[J]．哈尔滨工程大学学报，2019， 40（3）：540－547. SUN Guowen, TANG Qingqing, ZHANG Lijuan, et al. Early activation effect and mechanism of high-volume fly ash[J]. Journal of Harbin Engineering University, 2019, 40（3）: 540-547.
[14] 李汉光．煤矿采空区注浆处治浆液材料配比试验[J]．公路交通科技，2011，28（8）：35－40. LI Hanguang. Experiment on mixing ratio of grouting material for treatment of coal mine goaf[J]. Journal of Highway and Transportation Research and Development, 2011, 28（8）: 35-40.
[15] 谷拴成，苏培莉，罗金满，等．注浆浆液配方的优化设计与应用[J]．煤炭科学技术， 2007，37（7）：46－49. GU Shuancheng, SU Peili, LUO Jinman, et al. Application of optimized design on grout mixing formula[J]. Coal Science and Technology, 2009, 37（7）: 46-49.
[16] 王晓东，许刚刚，朱世彬，等．黄土和风积砂为骨料的高浓度胶结材料流变特性研究[J]．煤矿安全，2017， 48（12）：57－62. WANG Xiaodong, XU Ganggang, ZHU Shibin, et al. Rheological properties of high concentration cemented material taking loess and aeolian sand as aggregate[J]. Safety in Coal Mines, 2017, 48（12）: 57-62.
[17] 曹晓凡，唐亦川，邓念东，等．基于风积砂的膏体充填材料研制[J]．矿业研究与开发，2020，40（1）：43－48. CAO Xaiofan, TANG Yichuan, DENG Niandong, et al. Development of paste filling materials based on aeolian sand[J]. Mining Research and Development, 2020, 40（1）: 43-48.
[18] 徐文斌，杨宝贵，杨胜利，等．矸石充填料浆流变特性与颗粒级配相关性试验研究[J]．中南大学学报（自然科学版），2016，47（4）：1282－1289. XU Wenbin, YANG Baogui, YANG Shengli, et al. Experimental study on correlativity between rheological parameters and grain grading of coal gauge backfill slurry[J]. Journal of Central South University（Science and Technology）, 2016, 47（4）: 1282-1289.
[19] 吴爱祥，王建栋，彭乃兵．颗粒级配对粗骨料充填料浆离析的影响[J]．中南大学学报（自然科学版），2016（9）：3201－3207. WU Aixiang, WANG Jiandong, PENG Naibing. Effect of grain composition on coarse aggregate filling slurry segregation[J]. Journal of Central South University（Science and Technology）, 2016（9）: 3201-3207.
[20] 余习娟．浅论粤港澳大湾区建设中的粉煤灰综合利用[J]．中国资源综合利用，2019，37（7）：70－72. YU Xijuan. Discussion on comprehensive utilization of fly ash in the construction of Dawan district of Guangdon, Hong Kong and Macao[J]. China Resources Comprehensive Utilization, 2019, 37（7）: 70-72.
[21] 赵起越，李令军，张立坤，等．建筑垃圾的危害、监测及管理[J]．环境保护与循环经济，2019，39（7）：75. ZHAO Qiyue, LI Lingjun, ZHANG Likun, et al. Harm monitoring and management of construction waste[J]. Environmental Protection and Circular Economy, 2019, 39（7）: 75.
[22] 龚泽宇．竹埠港工业区建筑固废重金属污染固化研究[D]．湘潭：湘潭大学，2017. [23] 李贤贵．关于建筑垃圾的危害及资源化利用建议[J]．环境与发展，2017，29（5）：255－256. LI Xaingui. Suggestions on the harm of construction waste and resource utilization[J]. Environmental and Development, 2017, 29（5）: 255-256.
[24] 杨捷，武继龙，晋俊宇．矸石、粉煤灰高浓度料浆矸石颗粒悬浮性研究[J]．矿业科学学报，2019，4（2）：127－132. YANG Jie, WU Jilong, JIN Junyu. Study on the suspended properties of gangue particles with high concentration of gangue and fly ash[J]. Journal of Mining Science and Technology, 2019, 4（2）: 127-132.
[25] 张浩强，刘音，王其锋．城市建筑垃圾膏体充填性能研究[J]．矿业研究与开发，2014，34（4）：37－39. ZHANG Haoqiang, LIU Yin, WANG Qifeng. Study on performance of paste filling with urban construction waste[J]. Mining Research and Development, 2014, 34（4）: 37-39.
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