Manufacturer of coal mine reinforcement materials

Coalfield in northern China is generally threatened by Ordovician limestone water, and the coal seam has low compressive strength, easy to be broken and deformed, and easy to produce cracks and large fault zones. The loose surrounding rock area and fracture development zone are prone to roof fall and underground flood when the dynamic pressure increases. By injecting macromolecular chemical coal-rock reinforcement into the fractured strata of coal seam, the cracks are bonded together, and the injected slurry is firmly locked together, preventing the relative movement between the locked rocks, and finally achieving the purpose of coal-rock reinforcement. Commonly used coal and rock reinforcing agents mainly include polyurethane, epoxy resin, acrylamide, acrylate, urea-formaldehyde resin and so on. Among them, epoxy resin reinforcing agent has good adhesion, small curing shrinkage, no gas generation during curing, excellent heat resistance, chemical resistance and durability, but the paste is hard and not flexible enough. Acrylamide intensifier has low viscosity, good groutability, controllable gelation time, low water permeability, high price, low compressive strength, poor durability, corrosive and toxic slurry, which will cause environmental pollution; Acrylic steel bars have good groutability and controllable gel time, but their compressive strength is low. Polyurethane reinforcing agent has the advantages of moderate viscosity, adjustable setting time, light weight after consolidation, low thermal conductivity and chemical corrosion resistance. Among them, the Youkani rock reinforcement agent of Xuzhou Taibo is a mine reinforcement material with excellent comprehensive performance. It is formed by mixing and reacting two components at low temperature, and the volume ratio is 1: 1, which is specially used for reinforcing broken rock strata in coal mines or tunnels. After the material is injected into the stratum, it can quickly penetrate into tiny cracks, expand and solidify, and use its good connection and cementation characteristics with rocks to connect the broken rocks into a whole, thus increasing the firmness and supporting force of the stratum. It can quickly solve all kinds of stratum problems with potential safety hazards, prevent roof breakage, roof caving, gas outburst, water leakage and other accidents, and ensure production safety. Easy to use, can effectively simplify the construction process, save the construction time and reduce the construction cost. The application of Yukani rock reinforcement: (1) strengthening roadway or roadway side wall and crushing coal pillar; (2) Reinforce the broken coal and rock when the working face passes through the fault; (3) Reinforce the broken rock stratum at the top of the working face support or roadway; (4) Filling and reinforcing the high-risk area of roadway; (5) Reinforcement and water plugging of surrounding rocks of various underground caverns; (6) The gas drainage hole is blocked. The characteristics of Youkani rock reinforcement products are: (1) strong adhesion and fast adhesion to strata; (2) low viscosity, easy to penetrate cracks; (3) High elasticity, not damaged by stratum movement; (4) The performance index can be reached quickly, and the construction is rapid. With the development of coal industry and increasing attention to underground safety, polymer chemical materials are introduced, digested and absorbed by China as an advanced technology to solve coal mine safety production. Special coal and rock reinforcement agent has played an important role in solving the safety problems such as collapse control, roof maintenance, roadway reinforcement, water leakage and water gushing in coal bunker and surrounding rock solidification under adverse geological conditions.