破碎围岩无机材料注浆加固机理及其应用研究  

Research and Application of Reinforcement Mechanism of Inorganic Materials in Broken Rock

作　　者：王晓蕾 熊祖强[3] 袁印 李玲 Wang Xiaole;Xiong Zuqiang;Yuan Yin;Li Ling(Depurtment of mining engineering,Liliang University,Liliang,Shanci 033000,P.R.China;School of Geoscience and Technology,Souhwest Petroleum Universily,Chengedu 610500,P.R.China;Collaboratire Innoration Center of Coal Work Safery,Jonzur,Henan 454000,P.R.China;Oil and Cas Field Produetirity Construetion Dirision,petrochina Tarim ifield Company,Korla,Kinjiang 841000,P.R.China)

机构地区：[1]吕梁学院矿业工程系,山西吕梁033000 [2]西南石油大学地球科学与技术学院,成都610500 [3]煤炭安全生产河南省协同创新中心,河南焦作454000 [4]中国石油塔里木油田分公司油气田产能建设事业部,新疆库尔勒841000

出　　处：《地下空间与工程学报》2022年第1期112-119,共8页Chinese Journal of Underground Space and Engineering

基　　金：山西省高等学校科技创新项目(2019L0954);吕梁市开发区引进高层次技术人才计划专项(2019110)。

摘　　要：巷道开挖后,围岩受采动影响及矿压作用而发生破坏,破碎的围岩严重威胁煤矿安全生产,注浆加固是消除威胁的有效手段。采用最优配比试验优选出新型无机注浆材料最佳配比,对新型注浆材料注浆加固机理和固结特性以及流动时间进行了研究,并对新型注浆材料现场加固进行了应用分析,研究结果表明:煤体表面孔隙被絮状凝胶和水化产物充填,提高了界面胶结强度,增强了完整性与致密性;固结煤抗压强度较高,当养护8 h时可以达到13.1 MPa;浆液能够均匀分布在石子、河沙之间,三者粘结在一起,起到加固作用;注浆加固段巷道变形量整体小于未注浆加固段,注入新型无机注浆材料后提高了煤体承载力,对于保持巷道稳定性具有较好效果。After the excavation of the roadway, the surrounding rock is affected by mining, and the surrounding rock is damaged by the mineral pressure. The broken surrounding rock seriously threatens the safe production of coal mines. Grouting reinforcement is an effective means to eliminate the threat. The optimal ratio test was used to select the best ratio of the new inorganic grouting material. The grouting reinforcement mechanism, consolidation characteristics and flow time of the new grouting material were studied, and the application analysis of the new grouting material on-site reinforcement was carried out. The results show that:(1) The pores on the coal surface are filled with flocculent gel and hydration products, which improves the strength of the interface cementation, and enhances the integrity and compactness;(2) Consolidated coal has high compressive strength, which can reach 13.1 MPa when cured for 8 hours;(3) The grout can be evenly distributed between the stones and river sand, and the three are bonded together to play a role of reinforcement;(4) The deformation of the grouting-reinforced section is less than that of the unreinforced section. After injecting new inorganic grouting materials, the coal bearing capacity is improved, which has a good effect on maintaining the stability of the roadway.

关 键 词：矿业工程 新型注浆材料 加固机理 固结特性 

分 类 号：TD712[矿业工程—矿井通风与安全]