Assembled mud-rock flow debris dam and construction method thereof

A rapidly assembled debris flow sediment storage dam, comprising:

• at least one dam body foundation;
• a main dam body provided on the dam body foundation, the main dam body comprising a plurality of prefabricated reinforced concrete rectangular boxes, the boxes being linked by vertical and horizontal connections, wherein the top surface of each box is open and the other five surfaces of each box are closed;
• soil for filling each box;
• at least one dam abutment foundation, wherein the at least one dam abutment foundation and an inside slope of the main dam body are filled with at least one of cement-laid stone masonry and concrete;
• and
• a dam crest, the top surface of which is sealed using at least one of cement-laid stone masonry and concrete.

A method for constructing an assembled debris flow sediment storage dam, the method comprising:

• determining the size of the sediment storage dam based on the environment;
• determining the geometric proportions of each of a plurality of prefabricated rectangular boxes based on the size of the sediment storage dam;
• and determining the space-filling position of each box in the sediment storage dam based on a façade,
• excavating foundations of the sediment storage dam based on a predetermined excavation line for the foundations;
• treating the base of the foundations with reinforced concrete, or concrete and cement-laid stone masonry, to produce a dam body foundation;
• and simultaneously preparing the boxes at sites away from the sediment storage dam,
• hoisting the boxes layer upon layer from the bottom to the top, starting at the dam body foundation;
• implementing vertical and horizontal connections between the boxes;
• after the boxes have been hoisted layer upon layer, filling the boxes with soil excavated during the excavation of the foundations;
• tamping and intensely vibrating the soil to form a dam body,
• filling dam abutment foundations of the sediment storage dam with cement-laid stone masonry or concrete;
• and filling the inside slope of the dam body with cement-laid stone masonry or concrete to form a predetermined dam body pattern, and
• sealing the top surface of a dam crest using cement-laid stone masonry or concrete to complete the rapidly assembled debris flow sediment storage dam.