裂隙岩体加固浆材的试验研究

以裂隙岩体的注浆加固材料为研究对象，对“超细水泥-粉煤灰-膨润土-生石灰-水玻璃”浆液的固化反应加固机理进行了可行性分析，并针对浆液的渗透性、黏度、结石率以及结石体的抗压强度、耐久性等因素进行了室内试验（正交试验和耐久性试验）研究；详细分析了浆液及结石体的物理化学特征，给出了浆材的最佳配比及相应的性能指标。通过煤层底板注浆加固试验，验证了浆材对裂隙岩体加固的可行性，并取得了良好的治理效果。该类浆液与水泥类及一些常见的化学类浆材相比，具有价廉、储存方便、且无毒无污染的优点。

Experimental Analysis on a Grouting Material for Strengthening Fractured Rock

With microfine cement as the base material,we produced a grouting slurry for rock fissures by doping fly ash,bentonite,quicklime and water glass(sodium silicate).Laboratory tests(orthogonal tests and durability tests) were carried out to investigate its penetrativity,viscosity,stone rate,compressive strength of stone,and durability.Physical and chemical properties of the slurry and its stone were analyzed in details.When the water-cement ratio was 1,the best proportion of the mixtures was obtained as MC∶F∶B∶L∶SS=43∶30∶15∶8∶4.The funnel viscosity of the slurry were 28s,stone rate 99.1%,gelling time 55min,and 28d compressive strength 16.86MPa.The slurry was applied to the grouting of the fractured rock of a coal seam floor,and good results were achieved.Compared with common chemical grouting materials,this slurry is less costly,convenient to store,with neither toxicity nor pollution.