Properties of bentonite based mineral materials and typical disaster control in coal mines (Ⅱ) : Engineering application practice

Abstract

In order to explore the application effect of bentonite-based disaster control materials in different coal mine disaster scenarios, we modify and study gas borehole liquid sealing materials to realize full cycle thixotropic sealing of new fissures, composite bentonite fire preventing and extinguishing materials with high water retention and strong oxygen isolation, anti-agglomeration-crust powder explosion suppression materials with good dispersion and not easy to caking in high humid environment, the thermal insulation material for deep well roadway with low thermal conductivity, strong adsorption and small rebound capacity, and the improved adsorption mine toxic gas purification material with enhanced porosity All these materials are carried out in engineering application practice. The results show that the modified bentonite material has good disaster control effect and has gained outstanding application value in coal mine disaster control.

Keywords

• bentonite
• sealing hole materials
• fire preventing and extinguishing materials
• heat insulation materials
• explosion suppression materials
• adsorption purification
• disaster prevention and control