Cement mortar press injection machine and press injection mortar anchor rod construction method

Abstract

The invention relates to a grouting reinforcement device and a construction method for a drilling anchor rod in building foundation engineering, in particular to a cement mortar press injection machine and a press injection mortar anchor rod construction method. The cement mortar press injection machine comprises a motor (1) and a feeding pipe (5), the motor (1) is connected with a spiral shaft (6), the spiral shaft (6) is arranged in the feeding pipe (5), the feeding pipe (5) is provided with a feeding port (3), and a spiral blade (4) is installed on the spiral shaft (6). The press injection mortar anchor rod construction method comprises the step of performing mortar press injection in formed holes through the cement mortar press injection machine. The cement mortar press injection machine can press pure cement mortar into anchor holes in a press injection mode through a spiral propulsion feeding mode, and a mortar anchor rod having larger pulling resistance is obtained.

Description

technical field [0001] The invention relates to grouting reinforcement equipment and a construction method for drilling bolts in building foundation engineering, in particular to a cement mortar pressure injection machine and a construction method for pressure injection mortar bolts. Background technique [0002] Drilled anchor is a commonly used slope support structure in domestic and foreign building foundation projects. It has the characteristics of low cost, simple construction, and relatively stable slope after support, so it is widely used in slope support. Borehole anchors in the traditional sense are mostly grouted anchors or cement-soil anchors. The disadvantage is that the anchoring carrier is not strong enough, and there is a certain gap between the anchoring carrier and the soil layer after consolidation and shrinkage, resulting in the actual pullout resistance of the anchor. The force cannot meet the design requirements, and the number of anchor rods is too larg...

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Problems solved by technology

[0003] The invention aims at the insufficient strength of the anchoring carrier of the traditional grouting anchor rod or hydraulic concrete anchor rod in the prior art, and there is a certain gap between the anchoring carrier and the soil layer after the anchoring carrier consolidates and shrinks, so that the actual pull-out force of the anchor rod cannot reach the design Requirements, and the shortcomings of traditional grouting equipment that cannot be injected with mortar, a kind of mortar consolidation bolt is provided, which can greatly improve the strength of the anchoring carrier, and at the same time minimize the gap between the anchoring carrier and the soil layer. , so as to increase the anchor bolt pullout force cement mortar injection machine and injection mortar anchor construction method

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