低成本注浆材料研制及其改性试验研究
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摘要
为满足回采工作面通过构造带时围岩的控制问题及加固治理的需求,针对井下工作面深孔注浆的特点研制了一种高性能廉价注浆材料,通过实验室对水泥改性液浆液粘度、结石率、浆液粘结强度、抗压强度、表观脆性的测试研究,研究结果表明:改性液的引入不仅降低注浆材料成本,而且大大提高了浆液与受注物体间的粘结强度,最终确定水泥浆液水灰比0. 7∶1、水泥改性液用量15%～20%为水泥浆液的最佳配比。
In order to meet the requirements of the surrounding rock control and reinforcement during the working face advancement through tectonic zone,a high-performance and low-cost grouting material was developed according to the characteristics of deep hole grouting in the underground working face. The test results of liquid slurry viscosity,stone rate,slurry bond strength,compressive strength and apparent brittleness show that,the introduction of the modified liquid not only reduces the cost of the grouting material,but also greatly improves the stickiness between the slurry and the object to be injected. Finally, the optimal cement slurry ratio is proposed, water-cement ratio is 0. 7 ∶ 1, and the cement modification liquid dosage is 15% ～ 20%.
In order to meet the requirements of the surrounding rock control and reinforcement during the working face advancement through tectonic zone,a high-performance and low-cost grouting material was developed according to the characteristics of deep hole grouting in the underground working face. The test results of liquid slurry viscosity,stone rate,slurry bond strength,compressive strength and apparent brittleness show that,the introduction of the modified liquid not only reduces the cost of the grouting material,but also greatly improves the stickiness between the slurry and the object to be injected. Finally, the optimal cement slurry ratio is proposed, water-cement ratio is 0. 7 ∶ 1, and the cement modification liquid dosage is 15% ～ 20%.
引文
[1]刘文水,王新刚,冯春喜,等.注浆材料与施工工艺[M].北京:中国建材工业出版社,2008.
[2]康红普,冯志强.煤矿巷道围岩注浆加固技术的现状与发展趋势[J].煤矿开采,2013,18(3):1-7.
[3]许宏发,赵丽雅,王晨,等.估计普通水泥浆液黏度的经验公式[J].山西建筑,2015,41(32):51-52.
[4]王雄鹰.水泥浆液黏度随时间变化的试验研究[J].山西建筑,2009,35(16):10-11.
[5]郝庆多,王言磊,欧进萍.拉拔条件下GFRP筋与混凝土黏结强度试验研究[J].建筑结构学报,2008,29(1):103-111.
[6]罗兴华.钢纤维水泥砂浆与混凝土界面黏结性能试验研究[D].长沙:湖南大学,2009.
[7]董三升,冯坤昌,史文智.基于不同界面剂的新老混凝土黏结抗拉强度试验研究[J].混凝土,2011(2):14-16.
[8]黄洪亮,庄庆达,李艳芳,等.波美度对煤矿加固中C-S浆材固结性能影响的研究[J].煤炭工程,2018,50(2):113-115.
[9]李金旺,张耀辉.高强度微膨胀新型注浆材料动水注浆技术研究及应用[J].煤炭工程,2014,46(2):39-42.
[10]王正胜,宋雪飞,吕华文.丙烯酸盐注浆材料实验室研究及工程应用[J].煤炭工程,2013,45(S1):140-142.
[2]康红普,冯志强.煤矿巷道围岩注浆加固技术的现状与发展趋势[J].煤矿开采,2013,18(3):1-7.
[3]许宏发,赵丽雅,王晨,等.估计普通水泥浆液黏度的经验公式[J].山西建筑,2015,41(32):51-52.
[4]王雄鹰.水泥浆液黏度随时间变化的试验研究[J].山西建筑,2009,35(16):10-11.
[5]郝庆多,王言磊,欧进萍.拉拔条件下GFRP筋与混凝土黏结强度试验研究[J].建筑结构学报,2008,29(1):103-111.
[6]罗兴华.钢纤维水泥砂浆与混凝土界面黏结性能试验研究[D].长沙:湖南大学,2009.
[7]董三升,冯坤昌,史文智.基于不同界面剂的新老混凝土黏结抗拉强度试验研究[J].混凝土,2011(2):14-16.
[8]黄洪亮,庄庆达,李艳芳,等.波美度对煤矿加固中C-S浆材固结性能影响的研究[J].煤炭工程,2018,50(2):113-115.
[9]李金旺,张耀辉.高强度微膨胀新型注浆材料动水注浆技术研究及应用[J].煤炭工程,2014,46(2):39-42.
[10]王正胜,宋雪飞,吕华文.丙烯酸盐注浆材料实验室研究及工程应用[J].煤炭工程,2013,45(S1):140-142.