Protection method and device for protecting three-way joint meters of concrete-faced rockfill dams

Abstract

The invention discloses a protection method and device for protecting three-way joint meters of concrete-faced rockfill dams. According to the method and device, reinforced concrete is poured around athree-way joint meter to form protection piers; protection pier cover plates which are concrete structures are arranged at the tops of the protection piers; each protection pier cover plate is formedby a plurality of small cover plates through arrangement; a layer of steel plate is arranged outside each protection pier; the steel plates are firmly combined with the protection piers through anchor bolts; a layer of rubber pad is arranged outside of each steel plate; and the rubber pads are firmly adhered to the steel plates through SK313 glue. The protection device is capable of effectively protecting three-way joint meters mounted at the fields to give full play to the monitoring effect, and has relatively strong using value and relatively good social benefit and economic benefit.

Description

technical field [0001] The invention relates to a protection method and device for protecting a concrete face dam three-way joint meter, belonging to the technical field of water conservancy and hydropower engineering. Background technique [0002] The observation of joints around concrete face dams is an important means to control the construction progress and quality of face dams and ensure the safe operation of face dams. Concrete face dams are provided with peripheral joints between the toe slab and the face plate. If the opening and closing of the peripheral joints is too large, the dam will leak and the face plate will be damaged. Deformation in three directions such as cutting. Therefore, in order to grasp the occurrence, development and change process of induced joints in concrete face dams, it is usually necessary to observe the opening and closing degree of induced joints. At present, the commonly used crack observation instruments in China include flexible steel...

AI Technical Summary

Problems solved by technology

However, since concrete face dams need to set up gravel cover areas and clay bedding areas in front of the dam in the later stage, it is easy to cause damage to the three-dimensional joint gauge during the construction of gravel dumping, and there is no suitable device to effectively protect the dam. The three-way joint meter, when throwing soil and rocks in the heavy filling area and the bedding area, often due to improper operation, the soil and rocks will cause certain damage to the three-way joint meter at the structural joints, thereby reducing the monitoring structure of the three-way joint meter. Due to the effect of seam opening and closing degree, it is impossible to provide valuable monitoring data for later dam operation

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