SU1500716A1 - Method of erecting earth-fill dam - Google Patents

Description

The invention relates to hydraulic construction. The purpose of the invention is to increase the reliability of the dam. In the soil of the impervious element when it is dumped, it is laid along the length of the element.

The invention relates to the construction of groundwater structures, mainly in Siberia and the Far North.

The purpose of the invention is to increase the reliability of the dam.

Figure 1 shows the dam after dumping the first tier, the cross section ^ in figure 2 - the same, after the construction of the full profile of the dam.

On the prepared base 1, the soils of the Transition zones 2 and resistant prisms 3 are laid, after which the ground2

horizontal electrodes. The electrodes are connected via leads to alternating current and direct current generators, which are placed outside the dam. Electric heating of the frozen ground is carried out in the following sequence: first, upon reaching the height of pouring impervious element, equal to the power of the active layer, it is started with an alternating current in the zone of the layer in contact with the base. The electrical heating is completed upon reaching positive temperatures in the treatment layer. Then start heating with alternating current about

overlying layer and at the same time dry the underlying layer, exposing it to direct current until the soil reaches the minimum moisture. The power of the active layer in the process of dumping to the design height Maintain a constant. 2 Il.

There are impervious elements 4 into which horizontal electrodes 5 are placed along the length, connected by leads to alternators and alternating current generators.

If necessary, the soil, poured into an impervious element, is treated with electrically conductive frost-resistant solutions, for example, CacCl or CaCl2.

Upon reaching the height of the anti-filtering element, the early power of the active layer, determined by con3 and „„ 1500716

four

3 1500716

specific conditions of construction, begin electric heating in the zone in contact with the base. But when the positive temperatures in the treated layer are reached, the electrical heating is completed and the electric heating of the overlying layer begins, and the lower one is exposed to direct current and with the help of electroosmosis they dry the heated layer. After the time required to achieve the minimum humidity, determined empirically before the work, the direct current is turned off. In parallel with the electrotreatment of soil, it continues to be dumped, which ensures both the constant thickness of the active layer and its rise, i.e. height increase of the structure as a whole.

Claims (1)

Claim The method of erection of a soil dam, including the laying of resistant prisms and transition zones and dumping impervious element from overmoistened and (or) frozen ground, so that, in order to increase the reliability of the dam, in the ground of the anti-filtering element, when it is sent, horizontal electrodes are placed along the element, connected via leads to the generators variable and direct currents placed outside the dam, and electrical heating is carried out in the following sequence: first, when the height of the sprinkled anti-filter element is equal to the power of the active layer, it begins to change current in the zone of the layer in contact with the base, and end when the heated layer reaches positive temperatures, then start heating the alternating current of the upper layer and at the same time dry the underlying layer, exposing it to direct current until the soil reaches the minimum moisture in the process of dumping to the design height support constant.