With the development of our country, a growing number of projects require the construction and maintenance. People have good way to face potential accident caused by groundwater seepage. For example rivers and dams, such as piping leaks, mine gushing water, road and rail foundation collapsed, underground railways, tunnels, culverts, civil air defense projects, the leakage of underground construction, While the occurrence of these problems are related to leakage and groundwater flow. There are gap and empty Underground soil and bedrock, which causes water flows from the high-pressure low-pressure regional area under the water pressure. In the flow process, the first of those tiny particles of soil go with the flow, if the water pressure is sufficient to lead further larger coarse particles, the flow will be further into a large, taking more and coarse gravel, the results of an accident on the may form. The actual process is much more complex.。Groundwater flow velocity, flow, permeability coefficient, hydraulic gradient are important geological parameters. Through them, we will be able to right geological conditions to have a general understanding. For development of the situation there is an overall estimate of the trend. However, a few tens of meters 100 meters underground, how can we know that the movement of water and to measure these parameters do? The traditional method is to drill wells, We can have a rough estimate Situation on the ground through out the core and pumping irrigation. To understand a little more carefully, it is necessary to play multi-port detection Well. More expensive and time-consuming, the results are not very accurate. With the effects of accidents and losses growing, potential accident prediction and control more and more pressing. Measurement of groundwater has set higher requirements updated. We are committed to this research for many years, developed this smart groundwater parameter measurement instrument. It can test the water in the hole within the flow, flow and other parameters, in combination with other means of measurement and calculation formulas can be more accurately measured by most of the important parameters of groundwater.

Groundwater flow velocity Instrument Description:

Smart meter measurement of groundwater parameters is a complex process. we are here to do some popular introduction in order to make other professional staff have a rough understanding and knowledge on it. One of the core technology of the instrument is groundwater flow velocity and quantitative measurement. By many times the selection and testing, we have chosen radioisotope tracer method as our measurement, like a zoologist measuring tracer of migratory birds. Youd mark a bird to bring a small wireless transmitter, and then back into the flock. The bird equipped with transmitters migrate with the flock of birds, we can know that the flocks flight path, flight speed, where to stay and other series of problems. Here let us explain what is the isotope? We know that substances are composed of atoms.Different atoms is due to its outer electrons and protons have different numbers. That the same number of protons (in the periodic table of elements in the at the same location), but different numbers of neutrons an element that we call them isotopes. That Will launch a ray isotope is called radioactive isotopes. The reason why we select isotope as a tracer is the high sensitive as isotope measurement. It can even detect the presence of a single isotope atoms. Therefore, the concentration of the isotope used can be very low, it can be a good tracer of water flow. In the ground a few hundred meters underwater, there is great pressure, and there may be mud. It is harsh working conditions. The probe must be completely sealed, as issued by the isotope-ray energy passes through the metal wall of the probe can be detected. It can be accurate and reliable and direct measure of the motion parameters of groundwater. Combined with pressurized water pumping experiments, the current measurement means and the geological model, we can calculate the groundwater flow, flow, permeability coefficient, hydraulic conductivity coefficient, equivalent to a wide variety of hydro-geological parameters gap. The superiority of other measurement methods can not be compared.

Groundwater flow and flow meter applications:

Intelligent measuring the dynamic parameters of groundwater (groundwater flow velocity instrument) may measure groundwater seepage field of the horizontal and vertical movement of the speed and direction, the aquifer water yield and water absorption amount of groundwater moving reserves and static reserves, the total displacement of foundation pit using more than 50mm measured borehole, per meter aquifer permeability coefficient, hydrostatic head, hydraulic gradient, the hydraulic connection between groundwater bodies, penetration characteristics, farmland groundwater solute transport speed, dispersion, and diffusion coefficient. The technology combined high-tech air directional technology and isotope dilution to develop an intelligent measuring the dynamic parameters of groundwater. It measured the underground infiltration velocity and direction; vertical velocity, under the single well of the natural flow. And the instrument structure, principle and working processes have been discussed in detail. The measuring instrument can be widely applied to detection of dam leakage paths, water resources, groundwater investigation, coal mine water gushing prediction, environmental protection, farmland and other solute transport in groundwater. The product is applicable to pores, fissures, karst fissure groundwater measurements, has been measured to 700 meters deep.

Groundwater flow velocity instrument parameters:

Well diameter:50-300mm Determination of flow rate range :0.01-100m

The flow of error ≦ 2% Velocity error of ≦ 5%

Measuring Depth: ≦ 700m 　degree of precision electronic compass≦ 1

Probe power ≦ 50mA 　　 Investment Source Motor ≦ 100mA