Mud-loving grouting reinforcement material and grouting process

Abstract

The invention discloses a mud-loving grouting reinforcement material and a grouting process. The mud-loving grouting reinforcement materialcomprises the following components in percentage by weight: 45%-55% of calcium oxide, 5%-15% of sulfur trioxide, 15%-25% of silicon dioxide, 5%-15% of aluminum trioxide, 1%-5% of calcium silicate and 3%-10% of calcium sulfate. The mud-loving grouting reinforcement material is good in cohesiveness, high in strength and free of pollution, compared with a traditional inorganic grouting material, the water drainage amount is greatly reduced, in cooperation with the grouting technology, the cohesive force, the internal friction angle and the elastic modulus of rock mass are improved in mud soft rock roadway grouting reinforcement, the capacity of an anchoring body for resisting external shear damage is improved, chemical materials which are high in cost, serious in pollution and poor in later-stage reinforcement effect can be completely replaced, and the problem of grouting reinforcement of high argillaceous rocks, which puzzles many coal mines, is solved.

Description

technical field [0001] The invention relates to the technical field of mine anchor grouting reinforcement, in particular to a mud-friendly grouting reinforcement material and a grouting process. Background technique [0002] When excavating roadways in high-shale soft rock or repairing large-deformed roadways, in order to ensure the long-term stability of the roadway support, the "anchor-grouting reinforcement technology" is often used for roadway maintenance, that is, to select the appropriate time for grouting after the anchor net cable support reinforcement. [0003] When using this technology, cement-based materials are often used as grouting materials in the past. However, the practice of grouting reinforcement in high-shale soft rock roadways has proved that cement grout has a small diffusion radius, poor cementation, and high water separation rate in fissures in muddy soft rock. It will bring great negative impact; for the use of chemical materials for grouting rein...

AI Technical Summary

Problems solved by technology

However, the practice of grouting reinforcement in high-shale soft rock roadways has proved that cement grout has a small diffusion radius, poor cementation, and high water separation rate in fissures in muddy soft rock. It will have a great negative impact; for the use of chemical materials for grouting reinforcement, the cost is high, and the reaction heat can easily induce coal seam fire and pollute the environment

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