SU1081270A1 - Method of locating drain-clogging spot - Google Patents

Abstract

1. METHOD OF DETERMINING THE LOCATION OF CONFLICTING DRAINS by supplying water to it, characterized in that, in order to reduce the laboriousness of the process, the drain pores are filled with water and the filling time of the drains and the volume of water supplied are recorded. 2. The method according to claim 1, is also distinguished by the fact that the location of the drain is determined by the formula 4 (UU -at) g. e where is the distance from the place of water supply in the drain to the place of its clogging, m; W is the volume of water filed in Po3. Drain hole, m-coefficient; a t with time to fill the drain psiosity with water, s; 1G - number 3.14; -inner diameter of the drain, m

Description

The invention relates to agriculture, and in particular to a method for locating a blockage of drainage of a horizontal drainage system on drained lands. 5

A known method for determining the location of the blockage of the drain, including the excitation of sound vibrations in the cavity of the drain and fixing their level on the surface of the drained field. ¹⁰ months, drainage blockages are determined by a sharp decrease in signal level [1J.

The disadvantages of this method are the low noise immunity of fixation on the surface of the reclaimed 15 portion of the useful signal, which is easily drowned out by random noise, as well as the difficulty of operating electronic equipment used in the implementation of the method, and the need for a power supply.

There is also a method of determining the location of a blockage of a drain by supplying water to it [2J.

The disadvantage of this method is the high complexity associated with the need to use drainage equipment, including hoses with a jet head, pumping equipment. The method also efficiently used only at the same ³⁰ Menno with flushing drains.

The aim of the invention is to reduce the complexity of determining the location of the drainage blockage.

This goal is achieved by the fact that the 35th cavity of the drain is filled with water and the time of filling the drain and the volume of water supplied are recorded.

In this case, the location of the drainage blockage is determined by the formula 40 p ₌ 4 (W -at) where £ is the distance from the place of water supply to the drain to the place of its blockage, m; 45

W is the volume of water supplied to the cavity of the drain, m ³ ;

a is the coefficient;

t is the time of filling the drainage cavity with water, s;

- number - 3.14;

d is the diameter of the drain, M.

The proposed method is implemented as follows.

The source drains drown. A hose is inserted into the plug and water is supplied. Record the flow time, pressure and flow rate. The water supply is stopped with a sharp increase in pressure, which indicates that the drainage cavity is completely filled. Fix the volume of water supplied to fill the drain. Further, according to the formula, the distance from the source to the place of clogging of the drain is determined.

The coefficient a is determined as follows. Install a plug in the middle of the drain at a distance from its source. The source of the drain is wilderness that. A hose is inserted into this plug and water is supplied to the drain cavity. They fix the pressure, flow time, water flow.

'The water supply is stopped with a sharp increase in pressure. Record the volume of water supplied to fill the drain. The coefficient is determined by the formula a = H (W 'where% is the distance from the installed plug to the drain source.

The method is easily implemented on horizontal drainage systems on irrigated lands. The springs are supplied with wells and along the springs, as a rule, a tray with irrigation water passes. Water from the tray into the drain can be fed by gravity.

The proposed method gives an accurate result only if the drains are above the groundwater level. Then there is no water left in the clogged drains, which reduces the accuracy of determining the drainage blockage.

When water is supplied to the drainage cavity, part of its volume is infiltrated through the joints of the drainage tubes into the soil. In the formula for determining E, the loss of water volume takes into account the term at. In addition, tests of the proposed method showed that when filling the cavity of the drain in less than 10 minutes, water losses can be neglected.

The proposed method allows to reduce the complexity when examining the location of the blockage of the drainage.

VNIIIPI Order 1489/26

Circulation 644 Subscription

Branch of the PPP Patent, Uzhgorod, Project 4,

Claims (3)

1. METHOD FOR DETERMINING THE LOCATION OF DRINA BLOCKING by supplying water to it, characterized in that, in order to reduce the complexity of the process, the drainage is filled with water and the drainage filling time and the volume of supplied water are recorded. 2. The method according to claim 1, characterized in that the location of the drains is determined by the formula g ₌ 4 (W -at)? J ² 'where C is the distance from the place of water supply to the drain to the place of its clogging, m; W is the volume of water supplied to the cavity of the drain, m ³ ; a is the coefficient; t is the time of filling the drainage cavity with water, s; ¹¹ is the number ~ 3.14; <3 - inner diameter of the drain, m. SU „„ 1081270