Treatment method for grotto rock mass microfissure water damage

Abstract

The invention discloses a grotto rock mass microfissure water disaster treatment method, which adopts a horizontal radial hole process in a drill hole to perform rock mass nearly horizontal microfissure anti-seepage grouting and drainage. A horizontal radial hole is drilled in a small-diameter vertical drill hole along a near-horizontal microfracture of a rock mass, a fracture closed area and an open area are communicated, a continuous grouting body is formed after grouting, and compared with conventional curtain grouting, the number of grouting holes can be reduced, the grouting pressure can be reduced, the safety of cultural relics can be protected, the grouting quality can be controlled, and the grouting effect can be improved. And a plurality of radial horizontal holes are drilled along the horizontal micro-fracture layer to form a drainage channel, so that the probability of penetrating through a water-containing fracture is increased, the damage to rock mass of the grotto caused by large-scale excavation of a large-diameter vertical shaft or a drainage gallery is avoided, and the drainage effect the same as that of the drainage vertical shaft or the drainage gallery is achieved.

Description

technical field [0001] The invention relates to the field of cultural relics protection engineering, in particular to a treatment method for micro-crack water damage in grotto rock mass. Background technique [0002] Water damage from rock mass fissures in grottoes has always been the focus and difficulty of grotto protection. In the vertical anti-seepage of grotto temples, curtain grouting is a commonly used and effective method and process. However, there are the following problems in the use of curtain grouting: the drill hole spacing is small, the density is high, and there is much intervention in the grotto; due to the complex distribution and connection of cracks, most drill holes cannot directly affect the grouting. [0003] Digging drainage corridors or large-diameter drainage wells is an effective drainage measure that has been verified in practice in the treatment of water hazards in grotto rock mass fissures. However, due to the relatively large excavation size o...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that conventional curtain grouting, drainage corridors or large-diameter shafts have a large intervention in the grottoes and the implementation effect is not ideal in the treatment of grotto rock mass fissure water damage, the present invention provides a method for treating grotto rock mass micro-crack water damage, which realizes Grouting and Drainage Control of Micro-crack Water Seepage in Rock Mass

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