Pressure of Water Jet on the Soil Surface Depending on the Type of Nozzle and the Operation of the Jet

Abstract

Hydrotreatment of trunk zones of garden plantings is a promising way to suppress weeds. For correct modeling of the process of destruction of a blackened layer of soil by a jet of water, it is required to set the pressure of the jet on the soil surface to destroy its structure and inhibit weed vegetation. (Research purpose) The research purpose is determining the effect of the water jet on the pressure created on the soil surface to suppress weeds. (Materials and methods) Obtained data for the study using a developed stand for detecting the force of the jet, which consists of a weighing platform with a container for samples of blackened soil. We used a high-pressure device with a maximum pressure of 140 megapascals, a maximum flow rate of 360 liters per hour. The studies were carried out under the following operating modes: the nozzle of the “Turbo cutter” at a height of 3, 5, 10 centimeters from the soil surface, for each height an angle of inclination of 0.45 degrees to the normal of the soil surface was considered; a nozzle with a flat jet at a height of 3, 5, 10 centimeters from the soil surface, for each height, an angle of inclination of 0.45 degrees to the normal of the soil surface was considered; a nozzle with the proposed design of a flat jet in a turbo cutter at a height of 3, 5, 10 centimeters from the soil surface, for each height, an angle of inclination of 0.45 degrees to the surface normal was considered soil. (Results and discussion) The dependence of the pressure of the water jet on the soil surface on the height of the nozzle location for all considered types of nozzles and operating modes was obtained. (Conclusions) It was stated that the nozzle of the proposed design allows you to create a pressure of 1.9-2.8 times more than when using a standard flat nozzle, while the width of the working body increases by 1.3 times compared to the turbo cutter, this makes it possible to achieve the necessary quality of tillage and the width of the tool.