Ore the blocking material MKA mine with sealing material is a coal modified by combustible materials as non-combustible chemical complex engineering materials, and can be widely used in coal mine temporary closed, sealing Coal Chute work surface, next corner angle walls blocking air leakage channels and improve the working surface, the next corner gas drainage rate for mine rescue and disaster relief, and quickly closed the fire area, quickly fill the old cave, cut off from the boundary, the implementation of sealed until require fast reaction lots of local materials, rapid implementation possible. Its outstanding advantages may have three words sum it up: "local materials, saving time and labor; allow deformation, does not allow air leakage; efficient flame retardant, Green. MKA blocking material in the coal mine safety Mine with sealing material application MKA structure by the aggregate coal (or coal gangue mixture), additives (MKA) water composition. Water molecules and additives in a high score and inorganic molecules of hydration viscose role, the formation of hydrated polymer thickness not wait until the mucous membrane, binds tightly wrapped with coal particles, and the formation of the space mesh body structure, with a The flexible compression Microstructure and overall structural strength. MKA build a wall blocking material as the bag the greater the pressure, the stronger the integrity of the, occlusal bond between the bag and the bag closer, less air leakage, no air leaks. 1, MKA blocking material in the coal mine temporary closed project, MKA blocking material on the work surface, next corner wall of wind the MKA-blocking material in the face repeated mining, over the old chamber the time of application 4, MKA blocking material blocking Coal Chute, slim in the prevention and treatment of coal mine gas engineering practice shows that MKA blocking material, drainage rate was increased, the effect is very obvious, work gas concentration of the surface is reduced. MKA the mine blocking material advantages: efficient flame retardant: according to the recommended ratio dubbed mixed material at high temperatures of 800 to 1000 ° C, 15 to 20 minutes will not be ignited to form open flame, and does not produce toxic and harmful gases, There are strong insulation effect. Allow deformation that does not allow air leakage: MKA and crushed coal mixed with water, have a strong leakproof wind, water mucosa thick, strong adhesion, elasticity, moisturizing ability to withstand pressure, the stability of the wall. Proportion of construction: blocking material with crushed coal (or waste rock mixed with crushed coal) ratio of 1:4 per bag add water 10 to 15kg closure Coal Chute slim bagging better. Construction program: an appropriate proportion of dry crushed coal, MKA material dry mixed evenly, add water spray water to swell into a uniform mixture flexible bagging used for the walls, then the top and around the edge of the uppermost at the dry crushed coal and MKA material dry mix evenly bagging assembled into a wall, and then inject an appropriate proportion of water injection apparatus, expansive roof contact. I produced the organic polymer sealing material to block the upper ground top and around the edge of better, more economic security.