CN204705461U - A kind of device for measuring disturbed soil wind erosion quantity - Google Patents

Abstract

The utility model discloses a device for measuring the amount of wind erosion of disturbed soil, which comprises a box frame surrounded by vertical steel plates and a soil-carrying mechanism arranged inside the box frame by sliding up and down; the soil-carrying mechanism consists of a soil-carrying frame , soil-carrying net and pole composition. The utility model has the advantages of simple structure and convenient portability; the box frame and the soil-loading mechanism are set separately, and the bottom of the soil-loading mechanism is composed of a soil-loading net and filter paper to ensure that the moisture content of the soil sample above the soil-loading mechanism is consistent with that of the surrounding soil , effectively reduce errors and improve measurement accuracy; when taking soil samples, the box frame forms a retaining wall to ensure accurate sampling; the working principle is simple and easy to operate, and the wind erosion amount of disturbed soil can be directly obtained by calculating the weight difference between two soil samples, and the measurement method is simple , the amount of wind erosion can be directly calculated.

Description

A device for measuring wind erosion of disturbed soil

Technical field:

The utility model relates to a measuring device, in particular to a device for measuring wind erosion of disturbed soil.

Background technique

In the inland arid and semi-arid wind-blown areas of Northwest China, the original landforms are severely eroded by wind, and the construction activities of various development and construction projects such as coal mines, railways, highways, power plants, and gas pipelines have seriously damaged the surface. Accelerating the occurrence and development of wind erosion, how to accurately measure the amount of soil wind erosion in the disturbance area of development and construction projects has always been a difficult problem. At present, the most commonly used method of measuring soil wind erosion in production practice is the drill method and the wind erosion bridge method. Part of the height difference represents the wind erosion thickness, and the wind erosion amount is calculated according to the wind erosion thickness; the wind erosion bridge method uses a metal frame composed of two bridge legs and a beam, inserts the bridge legs into a typical section of the disturbance area of the development and construction project, and regularly measures the height from the beam to the surface The change of the wind erosion thickness is represented by the height difference, and the wind erosion amount is calculated according to the wind erosion thickness; the main problems in the practical application of the brazing method and the wind erosion bridge method are: the reading error cannot be avoided, and the observation data is not accurate enough. In addition, the iron plate method and the ring knife method are also used in practice to measure the amount of wind erosion. The iron plate method is to lay stainless steel iron plates in the typical areas of the disturbance area of the development and construction project, and cover a certain weight of soil samples on the iron plates. The weight change of the soil sample on the plate is used to calculate the amount of soil erosion. The main problems in the practical application of the iron plate method are: after a period of time, the iron plate cannot be embedded in the soil, the overlying soil on the iron plate is higher than the surrounding ground, and the iron plate cannot be embedded in the soil. The soil sample covered on the plate is easy to harden, and the iron plate is not easy to permeate and absorb heat and heat up, changing the water content of the covering soil and affecting the observation accuracy; the ring knife method is to put the disturbed soil sample into the ring knife, and regularly measure the weight of the soil sample in the ring knife The main problem in the practical application of the ring knife method is that the ring knife itself forms an airtight barrier, which has obvious boundary effects and seriously affects the observation accuracy.

Utility model content:

The purpose of the utility model is to provide a device for measuring wind erosion of disturbed soil with simple structure and high measurement accuracy.

The utility model is implemented by the following technical solutions: a device for measuring wind erosion of disturbed soil, which includes a box frame surrounded by vertical steel plates and a soil-carrying mechanism that slides up and down inside the box frame; The soil-loading mechanism is composed of a soil-loading frame, a soil-loading net and a vertical rod; the soil-loading frame with the same shape as the box frame is arranged inside the box frame, and the end edge of the soil-loading frame is connected with the box Sliding contact with the inner wall of the frame; at least three uprights are evenly and vertically arranged on the top side of the soil-carrying frame, the tops of the uprights are placed outside the box frame, and the uprights slide with the inner wall of the box frame contact; the soil-carrying net is arranged inside the soil-carrying frame, and filter paper is arranged on the top of the soil-carrying net.

The utility model has the advantages of simple structure and convenient carrying; the box frame and the soil loading mechanism are set separately, and the bottom of the soil loading mechanism is composed of a soil loading net and filter paper to ensure that the moisture content of the soil sample above the soil loading mechanism is consistent with that of the surrounding soil , effectively reduce errors and improve measurement accuracy; when taking soil samples, the box frame forms a retaining wall to ensure accurate sampling; the working principle is simple and easy to operate, and the wind erosion amount of disturbed soil can be directly obtained by calculating the weight difference between two soil samples, and the measurement method is simple , the amount of wind erosion can be directly calculated.

Description of drawings:

Figure 1 is a schematic diagram of the overall structure of the utility model.

Figure 2 is a schematic diagram of the overall structure of the soil-carrying mechanism.

Box frame 1, soil-carrying mechanism 2, soil-carrying frame 3, soil-carrying net 4, vertical pole 5, filter paper 6.

Detailed ways:

As shown in Figures 1 and 2, a device for measuring wind erosion of disturbed soil includes a box frame 1 surrounded by vertical steel plates and a soil-loading mechanism 2 that slides up and down inside the box frame; The soil mechanism 2 is composed of a soil-carrying frame 3, a soil-carrying net 4 and a vertical rod 5; a soil-carrying frame 3 with the same shape as the box frame 1 is arranged inside the box frame 1, and the end edge of the soil-carrying frame 3 slides with the inner wall of the box frame 1 Contact; four vertical rods 5 are evenly and vertically arranged on the top side of the soil-carrying frame 3, and the tops of the vertical rods 5 are placed outside the box frame 1, and the vertical rods 5 are in sliding contact with the inner wall of the box frame 1; inside the soil-carrying frame 3 A soil-carrying net 4 is provided, and a filter paper 6 is arranged on the top of the soil-carrying net 4, and the soil-carrying net 4 and the filter paper 6 are combined to ensure that rainwater seeps through the filter paper 6 and the soil-carrying net 4 to infiltrate into the ground, preventing the loss of the experimental soil sample, so that The water content of the soil sample above the filter paper 6 is consistent with the water content of the surrounding soil, reducing experimental errors.

Steps for use: First, insert the box frame 1 into the ground so that the top of the box frame 1 is 1 to 2 cm above the ground, take out the soil in the box frame 1, and the soil depth does not exceed the box frame 1, and ensure that the bottom of the box frame 1 The ground is flat, and the soil sample taken out is weighed; then, place the soil-carrying mechanism 2 inside the box frame 1 and push it down until the soil-carrying net 4 contacts the ground at the bottom of the box frame 1 and covers the soil-carrying net 4 Filter paper 6; then backfill the weighed soil sample to the inside of the box frame 1 and above the filter paper 6, the upper surface of the backfilled soil sample is flush with the surrounding soil surface, and the box frame 1 is taken out upwards along the vertical pole 5; after a certain period of time Finally, put the box frame 1 on the outside of the vertical pole 5, and slide the inner wall of the box frame 1 down along the vertical pole until the bottom of the box frame 1 is inserted into the ground directly below, and the top of the box frame 1 is basically flush with the surrounding ground surface. Take out the soil sample above the filter paper 6 and inside the box frame 1 and weigh it again; finally, calculate the difference between the weights of the two soil samples to obtain the amount of wind erosion.

Claims (1)

1. for measuring a device for disturbed soil wind erosion quantity, it is characterized in that, it comprises the box-frame that surrounded by vertical steel plate and split slides up and down the Zai Tu mechanism being arranged on described box-frame inside; Described Zai Tu mechanism forms by carrying native framework, year native net and vertical rod; Described box-frame inside be provided with identical with described box-frame shape described in carry native framework, described year native frame end limit and the sliding contact of described box-frame inwall; Be provided with at least three vertical rods at the top avris homogeneous vertical of described year native framework, the top of described vertical rod is placed in described box-frame outside, described vertical rod and the sliding contact of described box-frame inwall; Be provided with described year native net at described year native lower portion, be provided with filter paper at described year soil net top.