The Application Of Superfine Sulphoaluminate Cement-based Grouting Material

Organic grouting material as the consolidation of soft coal and rock material,While coal can help to effectively control the chip, But their high prices for coal mines has created a significant economic impact. Therefore,for superior performance, low-cost ultra-fine cement-based grouting material sulphoaluminate,Application of soft coal and rock in the study of very important practical significance.First of all, In this paper, the basic ultra-fine sulfur ratio of aluminate cement. The results show that: Grouting material used anhydrite was significantly higher than the same dosage under the compressive strength of gypsum used in the grouting material compressive strength. Gypsum content below 40%, Lime is 5% the compressive strength of grouting material greater than lime is 10% the compressive strength of grouting material. Gypsum content of 40% or more, Lime is 10% the compressive strength of grouting material greater than lime is 5% the compressive strength of grouting material. Sodium bentonite can increase the size of the suspension,And can shorten the setting time of grouting material, BR early strength agent can significantly improve the early strength of grouting material.This article also studies the flow of grouting material and grouting materials consolidation of coal strength, Found that the compressive strength of ultrafine sulphoaluminate cement-based grouting material Consolidation Coal after 2h higher than the compressive strength of organic grouting material consolidation of the coal. Subsequently, the paper focuses on the grouting material in the soft rock of coal, through the field Grouting experiment showed that: In 5MPa grouting pressure, sulphoaluminate fine to inject cement grouting material was well, the consumption of Grouting material are similar to the consumption of Ruimi material. Before and after grouting for tunnel displacement monitoring, drilling and ultrasonic tests come peep:After grouting, the gap be broken coal compaction, integrity and stability of coal increased;Ultrafine sulphoaluminate cement-based grouting material and organic Ruimi grouting grouting material was no significant difference.Finally, ultrafine ulphoaluminate cement-based grouting material the economy is analyzed drawn: Superfine sulphoaluminate cement grouting grouting material instead of organic materials, the cost of grouting can reduce more than 70%.