A small hydropower station was developed in a certain place. The construction party announced that the project was "completed". However, the investors of the development project felt that the problems that occurred during the construction process were serious, so they commissioned an appraisal agency to conduct a thorough quality appraisal of the project.
A team of experts arrived at the site to investigate, carefully conducted judicial inspections, and came to the following conclusions:
First of all, according to the design requirements, in order to ensure the strength of the rolling water dam, its raw materials should be "mortar masonry", that is, concrete and stone are configured in a certain proportion and poured into it. However, when the "drilling method to extract core samples of the dam body" was used for testing, it was found that a total of 1.2 meters of the 5.8-meter dam body had no mortar masonry and was empty. Experts judged that the 1.2-meter area "may have been replaced by soft river sand."
Secondly, the spacing between the steel bars along the slope of the dam was larger than the design requirements, and they were non-standard modified ribbed steel bars, which did not meet the design requirements. These steel bars are all substandard steel produced by illegal small factories. Once the dam encounters a certain amount of water, it will be washed away due to insufficient endurance strength.
In addition, the steel bars used in the generator plant project do not meet national standards, the strength of the foundation concrete cannot meet the original design strength requirements, and the quality of the foundation project is unqualified. The possible consequence of this is that "when it is put into power generation, the strong momentum of the water can lift the entire power plant and collapse it."
In summary, the engineering quality of the hydropower station is substandard and needs to be demolished and rebuilt.
