西部矿区可注断层破碎带注浆加固特性试验研究  

Experimental study on grouting reinforcement characteristics of groutable fault fracture zone in western mining area

作　　者：范铭今 陈军涛[1] 古海龙 唐道增 韩港 张树强 李光强 FAN Mingjin;CHEN Juntao;GU Hailong;TANG Daozeng;HAN Gang;ZHANG Shuqiang;LI Guangqiang(College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China;State Key Laboratory of Coal Mining and Clean Utilization,Beijing 100013,China;Chinese Institute of Coal Science,Beijing 100013,China;Dongtan Coal Mine,Shandong Energy Yankuang Energy Group Co.,Ltd.,Jining 273512,China;Luxin Coal Mine,Shandong Energy Xinwen Mining Inner Mongolia Energy Group Co.,Ltd.,Xilingol 027399,China;Qiuji Coal Mine,Shandong Energy Xinwen Mining Group Co.,Ltd.,Dezhou 251105,China)

机构地区：[1]山东科技大学能源与矿业工程学院,山东青岛266590 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]煤炭科学研究总院有限公司,北京100013 [4]山东能源兖矿能源集团股份有限公司东滩煤矿,山东济宁273512 [5]山东能源新矿内蒙古能源有限责任公司鲁新煤矿,内蒙古锡林郭勒027399 [6]山东能源新汶矿业集团有限责任公司邱集煤矿,山东德州251105

出　　处：《煤矿安全》2025年第1期155-163,共9页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(52104203);山东省自然科学基金资助项目(ZR2022ME140);煤炭资源高效开采与洁净利用国家重点实验室资助项目(2021-CMCU-KF015)。

摘　　要：注浆改造含水层是治理西部矿区砂岩水害最为直接且有效的手段。为了探究不同因素对西部矿区可注断层破碎带注浆加固特性的影响,设计了可注性试验、单轴抗压强度试验、渗透性试验来研究不同因素对浆液可注性和在完全可注的前提下注浆加固效果的影响规律及结果。研究结果表明:水灰比为1.5∶1时,注浆加固体的强度已达到现场应用的标准,并与水灰比为1∶1时的抗渗效果几乎相同且良好;在养护龄期为14 d时,水灰比为1∶1、1.5∶1这2种情况下的注浆加固体强度均达到现场应用的标准,并与养护龄期为28 d时的抗渗效果几乎相同且良好。根据研究结论和现场实际,选择水灰比为1.5∶1的浆液应用到注浆工程中,注浆后各钻孔吸水率均不大于临界值0.01 L/(min·m·m)且注浆量由平均1317.81 t下降至平均80.2 t,注浆效果明显且良好,为矿井安全开采和西部矿区水资源生态保护提供了保障。Grouting transformation of aquifer is the most direct and effective means to control sandstone water disasters in western mining areas.In order to explore the influence of different factors on the grouting reinforcement characteristics of groutable fault fracture zone in western mining area,we design groutability test,uniaxial compressive strength test and permeability test to study the influence law and results of different factors on groutability and grouting reinforcement effect under the premise of complete groutability.The results show that when the water cement ratio is 1.5∶1,the strength of grouting reinforcement has reached the standard of field application,and the impermeability effect is almost the same and good as that when the water cement ratio is 1∶1.When the curing age is 14 d,the strength of grouting reinforcement under the two conditions of water cement ratio of 1∶1 and 1.5∶1 reaches the standard of field application,and the impermeability effect is almost the same and good as that when the curing age is 28 d.According to the research conclusions and field practice,the slurry with a water-cement ratio of 1.5∶1 was selected and applied to the grouting project.After grouting,the water absorption rate of each borehole was not greater than the critical value of 0.01 L/(min·m·m),and the grouting amount decreased from an average of 1317.81 t to an average of 80.2 t.The grouting effect is obvious and good,which provides a guarantee for the safe mining of the mine and the ecological protection of water resources in the western mining area.

关 键 词：含水层改造 注浆加固 砂岩水害 水资源保护 养护龄期 

分 类 号：TD745[矿业工程—矿井通风与安全]