Composite type siltbeach dam body engineering technology

Abstract

The present invention provides a hydraulic crossdam materialized composite method by using the water power energy eliminating principle combined with the force-direction potential energy, the graritypotential energy and the water current cutting potential energy for the silted-up dam engineering. The dam rolling equipment is wood pole triangle gate frame, wood pole parallel-serial gate sheet andplastic cement parallel-serial protective sloop. The downstream weir is sand clag structure wtih breastwork protection. The present invention combines irrigation and water conservation, soil and water conservation, soil reclamation engineering and dynamic water resources utilization into one integrated whole, and is low in cost with high economic efficiency.

Description

technical field [0001] The invention relates to farmland water conservancy, soil improvement, water and soil conservation and agricultural environment protection systems, in particular to intensive control of basic farmland and lost water and soil, and sustainable development and utilization of dynamic water resources. Background technique [0002] The basic working principle of the flood diversion and silt diffusion of the original silt dam engineering technology is to use the grid weir to store water and the water outlet at a certain height to store the sediment layer and drain water, use the rolling dam to raise the water level of the river channel, and input the flood into the grid weir through the gate. The grid weir is composed of Shunshui stone dam, gate, Hengsha weir (with water outlet). The length of the discharge section of the gate and the water outlet is roughly the same, with a maximum of 2-4 meters. Shunshui stone dams and gates take into ...

AI Technical Summary

Problems solved by technology

The opening and closing of the gate requires manual operation. Although its engineering technology adopts modern mortar hydraulic structure, due to its rigid structure and huge cost, the application of the principle is superficial, the performance is out of touch, and the practicality is at the expense of the other. The contradiction between construction and investment is prominent, and it is difficult to adapt The drastic changes in flow field environment and time and space still follow the ancient traditional engineering mode mainly based on dredging

In order to reduce the project cost, a large number of capital-saving measures were taken to reduce the discharge section of the gate and grid weir, which not only increased the hydraulic mechanical energy and destructiveness, but also seriously lost the probability of silting. From the point of view of qualitative change caused by quantitative change, the influence of grid weir Lihong energy ratio and volume adjustment capacity are negligible, resulting in blockage and separation

Determined by its backward technical characteristics, the use of flood development, land transformation and general irrigation in mountainous and hilly areas has not been effectively solved for a long time. Water, soil, fertilizer and sand resources cannot be stored and utilized locally, but are distributed over a wide watershed. It is lost in vain and gathered in the downstream, causing serious disasters and major hidden dangers to the survival and production of the people. It is difficult to make full and simultaneous use of many natural laws that can be used. The arduousness, narrowness, long-term and repeated nature of engineering measures The nature of water and soil governance has been plagued by the rapid improvement of productivity. After the founding of New China, after 50 years of continuous investment, mobilization of the whole people and arduous struggle, although the great governance results have been achieved in history, the problem has not been fundamentally solved. The overall governance The task is more onerous