High polymer grouting directional cleaving drilling tool and pore forming method

Abstract

The invention discloses a high polymer grouting directional cleaving drilling tool and a pore forming method. The high polymer grouting directional cleaving drilling tool is a double wing drilling tool, namely a triangle wing is respectively welded at the two sides of a round drill rod at certain angles, wherein the end parts of the round drill rod are conical. When the high polymer grouting directional cleaving drilling tool is used, the static sounding principle is adopted, and the high polymer grouting directional cleaving drilling tool is pressed into a dam body by virtue of a hydraulic device, thus a directional cleaving grouting hole is formed. The high polymer grouting directional cleaving drilling tool and the pore forming method disclosed by the invention have the characteristicsof rapid construction, good directional guide effect and less disturbance to a dam, a drilling tool and a process which are matched are provided for a dam seepage control high polymer cleaving grouting technology, and the drilling tool and the method are successfully applied to multiple reservoir dams and dam danger-removing reinforcement projects, thus the drilling tool and the method have greateconomic benefit and social benefit and a wide development and application prospect.

Description

technical field [0001] The invention belongs to the danger-removing and strengthening technology of water conservancy infrastructure, and in particular relates to a dam anti-seepage high polymer splitting grouting drilling tool and a hole-forming method. Background technique [0002] In recent years, the safety maintenance of my country's water conservancy infrastructure construction has been highly valued by governments at all levels and widely concerned by the whole society, and the project safety situation is very severe. At present, more than 86,000 reservoirs of various types have been built in my country, ranking first in the world in number. But among the reservoirs that have been built, 40% of small reservoirs and 25% of large and medium reservoirs are dangerous reservoirs. Since 1954, there have been about 3,500 large and small dam failures in my country. In addition, about 280,000 kilometers of dikes have been built across the country, but a large number of dikes...

AI Technical Summary

Problems solved by technology

[0004] (1) The construction time is long;

[0005] (2) The damage to the dam structure is relatively large;

[0006] (3) In the anti-seepage of dams, it is required to form a continuous curtain in the direction of the dam axis, but the diffusion range of the cement split grouting is not easy to control, and it is difficult to ensure the formation of a continuous anti-seepage body;

[0007] (4) After the mud is consolidated, a brittle wall is formed in the dam body, which has a large difference in stiffness from the soil, and the deformation is uncoordinated, which is prone to cracking and damage

Since the anti-seepage high polymer splitting grouting technology for dams is a brand-new technology, there are no related reports on directional splitting drilling tools and hole forming methods at home and abroad.

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