Lactescent gunite material for supports of mine and construction method for guniting supports

Abstract

The present invention discloses a mine support emulsion body guniting material and its support guniting construction method. The base material composition of said mine support emulsion body guniting material includes water glass and stone powder with mixing ratio of 1:0.2-1.2, also can includes water glass, talcum powder and quartz powder with mixing ratio of 1:0.2-1.0:0.1-0.5. The preparation method of said base material includes the following steps: grinding the above-mentioned raw materials together, introducing steam, and continuously grinding them to obtain the saturated emulsion material, namely described base material. Said base material and its solidifying agent are respectively connected with emulsion body spray gun, uniformly mixing and sprayed on the tunnel wall and top plate so as to implement spray support.

Description

technical field [0001] The invention relates to a mine underground support material, specifically a mine support emulsion shotcrete material and a support shotcrete construction method mainly used for the underground support of a coal mine. Background technique [0002] Shotcrete support is now widely used for roadway support in underground mining in coal mines, metallurgy and other fields, and shotcrete material is a necessary process in the construction of shotcrete support. Due to the large construction dust during shotcrete, which seriously affects the health of operators, and due to the high rebound rate of shotcrete, those skilled in the art provide a variety of materials to improve the shot environment and support quality. For example, adding water and wet spraying to the spraying material with coal gangue as the aggregate can reduce the cost of spraying construction, the rebound amount is reduced, and the dust is only slightly lower than before, and the thickness of ...

AI Technical Summary

Problems solved by technology

Due to the large amount of construction dust when spraying concrete materials, which seriously affects the health of operators, and due to the high rebound rate of sprayed concrete materials and other deficiencies, those skilled in the art provide a variety of materials to improve the spraying environment and support quality

For example: spraying materials with coal gangue as aggregate and wet spraying with water can reduce the cost of spraying construction, the amount of rebound is reduced, and the dust is only slightly lower than before, and the thickness of the existing spraying materials is generally 70-150 mm. In between, it is prone to cracking, falling off and other deficiencies; there are also disclosed spray materials, which add a large amount of chemical substances, and their deficiencies are also more obvious: it is easy to generate static electricity to cause explosions, poor flame retardancy, and high cost. Poor affinity, etc., so far can not be promoted and used in coal mines

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