分流注浆堵水技术在煤矿防治水中的应用  

Application of diversion grouting and water plugging technology in coal mine water prevention and control

作　　者：李俊杰 LI Jun-jie(China Coal Shaanxi Yulin Energy and Chemical Co.,Ltd.,Yulin 719000,China)

机构地区：[1]中煤陕西榆林能源化工有限公司,陕西榆林719000

出　　处：《化学工程师》2023年第10期114-118,共5页Chemical Engineer

摘　　要：针对西部某煤矿巷道涌水采取注水泥浆堵水措施效果较差的现象,室内以聚醚多元醇PTMG、甲苯二异氰酸酯TDI、二苯基甲烷二异氰酸酯MDI和改性剂GX-1等物质为主要原料,结合其他化学助剂,制备了一种新型注浆堵水材料,并将其在目标煤矿井分流注浆堵水现场施工中进行了成功应用。室内实验结果表明,新型注浆堵水材料制备过程中改性剂GX-1的加量越大,A组分的密度和黏度值就越大,凝胶时间和包水性也越长;另外,新型注浆堵水材料的遇水膨胀率随着改性剂GX-1加量的增大而逐渐降低,抗压强度随着GX-1加量的增大呈现出“先升高后降低”的趋势,改性剂GX-1的最佳加量为3%。现场应用结果表明,新型注浆堵水材料在S112井分流注浆堵水施工中应用效果较好,采取措施后S-1井段和S-2井段的涌水量明显降低,注浆堵水效果较好。In view of the poor effect of cement slurry for water plugging in a coal mine roadway in the west,a new type of grouting water plugging material was prepared with polyether polyol PTMG,toluene diisocyanate TDI,diphenylmethane diisocyanate MDI and modifier GX-1 as the main raw materials indoors,combined with other chemical additives,and was successfully applied in the field construction of diversion grouting water plugging in the target coal mine.The laboratory test results show that the greater the dosage of modifier GX-1 is,the greater the density and viscosity of component A,and the longer the gel time and water inclusion property are;In addition,the water swelling rate of the new grouting water plugging material decreases gradually with the increase of the dosage of modifier GX-1,and the compressive strength shows a trend of"first increasing and then decreasing"with the increase of the dosage of GX-1.The optimum dosage of modifier GX-1 is 3%.The field application results show that the new grouting water plugging material has good effect in the diversion grouting water plugging measures of S112 well.The water inflow of S-1 and S-2 well sections is significantly reduced after measures,and the grouting water plugging effect is good.

关 键 词：煤矿巷道涌水 防治水 分流注浆堵水 注浆堵水材料 堵水效果 

分 类 号：TD745[矿业工程—矿井通风与安全]