Inorganic material for reinforcement

Abstract

The inorganic material is prepared from, by weight, 30-90 parts of specially-made cement, 0.1-20 parts of an accelerator, 6-35 parts of stone powder, 0.4-26 part of bentonite, 0.2-10 parts of sulfate,0.1-15 parts of a water reducing agent, 0.1-18 parts of silicon-calcium powder, 0.1-17 parts of an early strength agent, 0-10 parts of fine powder, 0-5 parts of iron powder, 0.2-20 parts of fly ash and 0.3-11 parts of gypsum. A vertical anchor rod hole is drilled in a coal-rock mass by using an anchor rod drilling machine, an anchor rod is inserted into the anchor rod hole, inorganic materials are mixed according to a water-cement ratio of (0.28-0.4): 1, and grouting is performed by using the anchor rod to reinforce the coal-rock mass. The inorganic material has the effects of preventing fireand ensuring safe production of a coal mine and roadway utilization; repeated roadway repair is completely eradicated, slope deviation and roof fall are prevented, operation is easy, and safety and reliability are achieved; and the inorganic material is economical and applicable.

Description

technical field [0001] The invention belongs to the technical field of coal and rock mass reinforcement, and relates to an inorganic material, in particular to an inorganic material for reinforcement. Background technique [0002] Coal fields in China are generally threatened by Austrian ash water. Coal seams have low compressive strength, are easily broken and deformed, and are prone to cracks and large fault zones; broken and loose surrounding rock areas and fracture-developed zones are extremely prone to roof collapse and formation of cracks under the condition of increased dynamic pressure. Groundwater disasters, etc. [0003] In the existing technology, coal mines are more and more frequent with roof accidents, roof fall, partial side, roadway deformation, etc., which restrict the safe production of coal mines. In the past, organic materials were used for reinforcement and grouting. Due to the high temperature of organic materials, fires are easy to occur, and The cons...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that in the prior art, coal mines are more and more frequent with roof accidents, roof fall, partial side, roadway deformation, etc., which restrict the safe production of coal mines. In the past, organic materials were used for reinforcement and grouting. Organic materials are prone to fire at high temperature, and the construction is relatively complicated, labor-intensive, large grouting volume, loose coal, roof caving, partial side, roadway deformation, fault passing, etc.; The feed port is connected, and the pipe at the connection is easy to bend, so that when the grouting work is performed, the slurry is easily bonded to the position of the pouring port, and when the work is stopped, the concrete is very easy to harden on the inner wall of the pouring port, resulting in In view of the problem of difficulty in using it for the first time, an inorganic material for reinforcement is proposed

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