RU68531U1 - VERTICAL DRAINAGE SYSTEM - Google Patents

Abstract

The utility model relates to the field of construction and can be used to lower the groundwater level while protecting against flooding of built-up territories of cities and industrial sites, to drain territories, pits, and to supply groundwater. The objective of this utility model is to simplify the design of the drainage system and increase its efficiency. The vertical drainage system consists of a vertical shaft 1 with a drain 2 located in it, in which filters 3 are installed. In this case, one of the filters 3 is located in the drain 2 at the level of the water-saturated (drained) zone 4, and the other of the filters 3 is located in the drain 2 at the level of zone 5, occurrence of rocks with high water absorption. To avoid damage to the aquifer, it is most advisable to place the lower filter 3 above the strategic aquifer. 1 n.p.ph., 1 s.p.ph., 1 ill.

Description

The utility model relates to the field of construction and can be used to lower the groundwater level while protecting against flooding of built-up territories of cities and industrial sites, to drain territories, pits, and to supply groundwater.

Known vertical drainage system, consisting of a number of vertical drainage wells with filter columns and an underground drainage pipe connected to them (see AS USSR N 1532658, IPC ЕВВ 11/00, publ. 03.12.1987).

A disadvantage of the known drainage system is the complexity and complexity of its manufacture.

Known vertical drainage system consisting of vertical drainage wells with filter columns installed in them, and a horizontal drainage pipe (see RF patent No. 2074925, IPC EV 02/11, E03B 3/11, EV 3/10, publ. 03/10/1997 g.).

A disadvantage of the known drainage system is also the complexity and complexity of its manufacture.

The closest technical solution to the claimed one is a drainage system consisting of a vertical shaft shaft turning into horizontal horizontal wells with filters installed in it (see RF patent No.2018563, IPC E02D 19/10, publ. 08/30/1994). At the same time, filters were installed taking into account the water permeability of rocks in previously passed horizontal wells.

A disadvantage of the known drainage system is the need for the formation of horizontal horizontal wells, which leads to an increase in the complexity of manufacturing a drainage system.

The objective of this utility model is to simplify the design of the drainage system and increase its efficiency.

The technical result achieved by solving the task is the uninterrupted support of a given water level in a flooded area

by forming a pressure differential between the drained and receiving zones, which contributes to an increase in the throughput of the drainage system.

The task is achieved by the fact that in a vertical drainage system consisting of a vertical shaft shaft and a drain with filters installed in them, according to a utility model, the drain is installed in a vertical shaft shaft, and one of the filters is placed in the drain at the level of the water-saturated (drained) zone, and the other of the filters is located in the drain at the level of the rock occurrence zone with high water absorption.

In addition, a filter placed at the level of a bed of rocks with high water absorption should be placed above the strategic aquifer.

The inventive combination of features allows to ensure uninterrupted support of a given water level in a flooded area by creating a downward flow of water due to the fact that the inlet filter is installed in the bedding zone with high absorption, where atmospheric pressure is lower than at the level of water-saturated rocks.

At the same time, water under its own weight tends to the bottom in a zone with low pressure. As a result, depression funnels form, which lead to the infiltration of surface and groundwater into rocks with high water absorption.

This allows the drainage of ground and surface water with low costs and high productivity.

The inventive utility model is illustrated in the drawing, which shows a vertical drainage system, a vertical section.

Positions in the drawings mean the following: 1 - borehole; 2 - drain; 3 - filter; 4 - water saturated zone; 5 - zone of occurrence of rocks with high water absorption; 6 - drain cover 2.

The vertical drainage system consists of a vertical wellbore 1 with a drain 2 located in it, in which filters 3 are installed. In this case, one of the filters 3 is located in the drain 2 at the level of the water-saturated (drained) zone 4, and the other of the filters 3 is located in the drain 2 at the level of zone 5, occurrence of rocks with high water absorption.

For safety, the upper part of the drain 2, protruding above the ground, is closed by a cover 6 with a lock.

Filter 3 is a tubular frame with round or slotted perforation, a wire spiral made of stainless wire with a diameter of 2-4 mm. and a mesh that covers the frame on top of the spiral. The filter mesh is selected by sieving through it a dried sand sample from an aquifer in which it is proposed to install a mesh filter. The mesh works most efficiently if, during sifting, 40 to 80% of the amount of test sand passes through it.

To avoid damage to the aquifer, it is most advisable to place the lower filter 3 above the strategic aquifer. At the same time, the strategically aquifer is isolated from above by a dense waterproof layer of clay (blue) (not shown in the drawing). If necessary, drained water can be chlorinated according to the formula for abandoned wells.

The vertical drainage system operates as follows.

Before installing vertical drainage, it is necessary to conduct a detailed hydrogeological study of the territory proposed for drainage. Drill exploration wells. According to well drilling data, it is necessary to determine the level of standing of the first non-constant aquifer, the reasons for its formation, to determine the bedding interval of the reservoir rock (zone 5 of bedding with high water absorption) capable of absorbing drained water.

According to the drilling data, determine the well design: drain diameter 2, filter installation intervals 3.

Drain 2 with filters 3 is installed in the vertical shaft shaft 1. Water from the water-saturated zone 4, under its own weight, tends to the bottom into zone 5 of the occurrence of rocks with high water absorption. As a result, depression funnels form, which lead to infiltration of surface and groundwater into rocks with high permeability. The downward velocity of the removed water reaches 5 m ³ / h.

The inventive drainage system allows us to simplify its design, reduce the cost of drainage, by eliminating horizontal wells, pumping equipment. In addition, the claimed drainage system allows to reduce the cost of driving the territory used in the construction in its original form, the removal of critical mass from landslide plots.

Claims (2)

1. A vertical drainage system consisting of a vertical shaft shaft and a drain with filters installed in them, characterized in that the drain is installed in a vertical shaft shaft, and one of the filters is placed in the drain at the level of the water-saturated zone, and the other of the filters is placed in the drain on level of the zone of occurrence of rocks with high water absorption. 2. The drainage system according to claim 1, characterized in that the filter placed at the level of the rock with high permeability, can be placed above the strategic aquifer.