SU1638602A1 - Apparatus for sampling pore solutions from bottom silt depositions - Google Patents

Abstract

This invention relates to hydrogeological research and ecology. The purpose of the invention is to expand the functionality. The device includes a conical ceramic permeable probe 1, covered before the start of the taper with a waterproof layer 2, installed in glass 3 with pointed edges 4. holes 5 in the bottom and equipped with stabilizers 6. Probe 1 is tightly connected to the connecting tube 7, in which the water-lifting 9 and air duct 10 tube. The sampling container 11 is hermetically communicated with the water-lifting 9 and vacuum 12 tubes. 1 il.

Description

The invention relates to hydrogeological studies.

The aim of the invention is the expansion of functionality.

The drawing shows the proposed 5 device for sampling pore solutions from bottom sediment in the section.

The device includes a hollow conical ceramic permeable probe 1, 10 from the top before constriction, covered with a waterproof layer 2, for example, epoxy resin and installed in a glass 3 with the top of the cone (the end of the probe) at the level of the pointed edge 4. For 15 air outlet and free passage of liquid when the device is immersed under water in the bottom of the glass, holes 5 are made, and to prevent the device from tipping over during the process of lowering it under water, the tank 20 is equipped with stabilizers 6 made and fixed to the stack not with the pressure center placement software (during the movement in water) above the center of gravity of the device. The probe 1 is hermetically connected to the connecting tube 7, the upper opening of which is closed by a stopper 8, and a water-lifting 9 and air-ducting 10 tubes are also hermetically mounted in the stopper. A container 11 for sampling with a pipe 12 is connected to the water-lifting tube 30 to create a vacuum in the tank 11 during sampling. Tubes 10 and 12 are equipped with locking devices 13. To install the device at depths greater than 35, the length of the connecting tube 7, the cup is equipped with a cable 14 attached to the eyes 15. To create excessive pressure and vacuum in probe 1, the device is equipped with a pump and vacuum pump 40 (for not shown).

The device operates as follows.

Before immersion of the device in the bottom layer of sludge 16 in the ceramic probe 1 45, the locking device 13 is opened and an overpressure depending on the immersion depth of the device is created on the tube Yus and the locking device 13 is closed, after which the device is ready for operation.

If the water depth in the test section does not exceed the length of the connecting tube 7, the beaker 3 is introduced into the bottom section of the sludge 16 to the depth of the full load of the ceramic sensor 1. Since overpressure is created in the probe 1, water does not enter it when immersed. After introducing the probe 1 into the sludge layer 16 to a depth above the boundary of its epoxy resin coating 2, the shut-off device on the tube 12 is opened and a vacuum is created in the container 11, and through the tube 9 in the cavity of the probe 1. The pore solution entering the probe 1 from the sludge layer 16 rises through the tube 9 and fills the tank 11, from where the pore solution is taken for further research. If the depth of the water layer is greater than the length of the connecting tube 7, the glass 3 is lowered using a cable 14 from any boat. and in winter from ice, and the cable must be completely released before the device falls freely. In this case, trapped air and subsequently water freely exit through holes 5 in the bottom of the glass 3, and thanks to the stabilizers 6, the center of water pressure during the lowering of the device moves above the center of gravity, holding the device in a vertical position ’. When the bottom of the reservoir is reached, the device is introduced into the sludge layer 16 and then the device operates in the described manner. The tubes 10 and 12 should be longer than the depth of the investigated section of the reservoir.

The proposed device allows you to select pore solutions from the bottom layer of sludge without removing it to the surface. In addition, the representativeness of the sample from one measurement point is significantly improved, since it can be taken any desired number of times, which also makes it possible to take into account the dynamics of the composition of pore solutions over time. This is especially important if pore solutions of sludge and water in a reservoir have different salinity. In addition, the device is especially effective in the study of bottom sediments of tailings.

Claims (1)

Claim A device for sampling pore solutions from bottom mud, including a hollow conical ceramic permeable probe, a glass made with holes and fixed in the upper part of the probe, a connecting tube with a stopper, a water tube, an air tube and a device for creating excess pressure or rarefaction in the cavity probe, characterized in that, in order to expand the functionality, the probe is installed in the bottom of the glass, the surface of the probe is covered with water resistance from above and before the taper begins aemym layer, and the lower end of the probe is placed on the cup cutoff level, wherein the glass is formed s'zaostrennoy edge provided with stabilizers and the holes are arranged in the bottom of the cup, and the water-lifting pipe is mounted inside the probe.