Youkani Low-Temperature Coal And Rock Mass Reinforcement Material (KDJ-Ⅱ)

Technical Overview
This product consists of two components, Component A and Component B, which are mixed and used in a volume ratio of 4:1. The chemical reaction during the reaction process is mild with low heat generation, and the surface temperature rise before and after the reaction is within 5 degrees Celsius. It has a low initial viscosity. After being injected into the space of fractured coal and rock mass, it has excellent diffusion and penetration performance. The final generated solid can form a firm consolidated body with the coal and rock mass, featuring high compressive strength and good elastic deformation resistance. It efficiently enhances the integrity and supporting capacity of the coal and rock mass, ensuring the safe production of the mine.

Technical Characteristics
(1) Room temperature reaction and room temperature curing: Innovative technology is adopted, with low heat generation during the curing process. The surface temperature rise before and after the reaction is within 5°C, and basically no heat is released to the surrounding environment.
(2) Excellent diffusion performance: In the initial stage, it is in the form of an emulsified fluid with good fluidity and permeability. It has excellent diffusion capacity in the micro-pores and fractures of fractured coal and rock mass, and can fully fill and reinforce the fractured coal and rock.
(3) Adjustable setting speed, early strength and high compressive strength: The initial setting time can be adjusted within the range of 10 seconds to 900 seconds. The compressive strength reaches more than 5MPa in 30 minutes, and the final compressive strength reaches more than 15MPa.
(4) Good toughness and elastic deformation resistance: The consolidated body has good elastic deformation resistance, with an elastic deformation amount exceeding 20%.

Application Location
(1) Reinforcement of advanced fractured coal, rock and roof in the working face;
(2) Reinforcement of fractured coal and rock on the top of working face supports or roadways;
(3) Filling or reinforcement of high roof fall areas in roadways;
(4) Filling and reinforcement of fractured cracks in small coal pillars;
(5) Reinforcement of coal wall spalling in the working face;
(6) Sealing of gas drainage holes.

Application Process
Component A and Component B are mixed in a volume ratio of 4:1 through dedicated mixing equipment, and the mixed material is injected into the fractured coal-rock mass through grouting boreholes by a grouting pump.