CN103670394A - Earth-taking device for sand frozen earth - Google Patents

Abstract

The invention relates to a soil-taking device for sandy and frozen soil, which comprises an electric drill and a drill bit. The outer surface of the drill bit has threads, and the top of the quantitative soil-taking pipe has internal threads, which are threadedly connected with the electric drill bit; the outer pipe wall of the quantitative soil-taking pipe Two rectangular soil-removing grooves are cut along the length direction of the pipe at the symmetrical parts on both sides; the pipe wall at the bottom end of the quantitative soil-taking pipe has a plurality of teeth. The present invention can obtain undisturbed frozen soil samples conveniently and quickly, and due to the function of the quantitative soil-taking rod, undisturbed soil column samples of various lengths can be accurately obtained at one time; at the same time, steel pipes can be quickly obtained by using the pores of the soil removal tank Take out the soil inside; it is convenient and quick, and can solve the difficulty of taking frozen soil from sandy land.

Description

Soil fetching device for sandy permafrost

technical field

The invention relates to a sampling device for frozen soil, which is mainly aimed at sampling soil from sandy frozen soil to measure its water content.

Background technique

During the process of soil freezing, the water in the soil migrates and redistributes, which is a core issue in the study of soil freezing. In the research work on soil moisture status in related permafrost regions, it is necessary to accurately measure the moisture content of frozen soil, but traditional soil sampling devices are mainly aimed at soil sampling at room temperature, which cannot obtain qualified frozen soil in frozen soil. At the same time, due to the limitations of traditional sampling methods, soil augers cannot carry out quantitative soil sampling. The amount of soil sampling is generally quantified by the marks on the outside of the soil auger. More or less sampling often occurs, so soil sampling It is difficult to accurately obtain soil samples at precise depths in the field.

Contents of the invention

Aiming at the deficiencies of the prior art, the invention provides a device for obtaining undisturbed frozen soil samples conveniently and quickly.

The technical solution adopted by the present invention for achieving the above object is: a kind of earth-borrowing device for sandy and frozen soil, comprising an electric drill and a drill bit, characterized in that: the outer surface of the drill bit is threaded, and the top of the quantitative soil-borrowing pipe is provided with an internal thread, and The drill bit of the electric drill is threaded; the symmetrical part on both sides of the outer pipe wall of the quantitative soil taking pipe is cut with two rectangular soil removal grooves along the pipe length direction; the bottom pipe wall of the quantitative soil taking pipe has a plurality of teeth.

There are multiple pairs of round holes along the length direction of the pipe at the symmetrical parts on both sides of the outer pipe wall of the quantitative soil-taking pipe, and soil-taking rods are inserted into the symmetrical pair of round holes.

The circular hole is separated from the two soil removal troughs.

There is a distance between the two soil-removing grooves and the internal thread at the top of the soil-taking pipe.

One of the pair of round holes has threads inside, and the outer diameter of the other round hole is larger than the inner diameter.

The soil-taking rod is a bolt, and the bolt is matched with a threaded round hole, and the diameter of the nut of the bolt is equal to the outer diameter of another round hole and larger than the inner diameter of the round hole.

There is a distance between the teeth and the soil removing groove.

The plurality of circular holes are evenly arranged between the top edge and the bottom edge of the soil removal tank.

The present invention has the following beneficial effects and advantages:

1. The present invention mainly solves the difficulty of taking soil quantitatively from sandy permafrost. Utilizing the tool of the present invention can obtain the undisturbed frozen soil sample conveniently and quickly, and due to the effect of the quantitative soil taking rod, it can be accurately taken to 5cm, 10cm at a time, Undisturbed soil column samples of 15cm or 20cm length.

2. At the same time, the soil taken into the steel pipe can be quickly taken out by using the pores of the soil removal tank. This method is convenient and quick, and can solve the difficulty of taking frozen soil from sandy land.

Description of drawings

Fig. 1 is a schematic view of the soil removal device of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

In order to overcome the difficulty of taking soil from sandy frozen soil, the invention provides a novel sandy frozen soil taking device, which can take samples of frozen soil from the surface and below.

The instrument is mainly composed of an electric drill 1 and a quantitative soil-taking pipe 2 for frozen soil (Figure 1). The quantitative soil-taking pipe 2 for frozen soil is threaded on the drill pipe of the electric drill 1. Thick 0.35cm, length 24cm, inner diameter is 4.3cm; At the position 2cm away from the bottom of the symmetrical position on both sides of the quantitative soil taking pipe 2 for frozen soil, cut a hollow groove with a width of 1cm and a length of 20cm, named as soil removal groove 3 ; Dig 8 holes and name them as quantitative soil-borrowing holes 6 in both sides of soil removal tank 3, respectively 4 symmetrical distributions on the left and right sides, wherein all apertures on one side are 1cm, and all inner apertures on the other side are 1cm, and the outer apertures are 1 cm. It is 1.5cm, and the screw thread in the hole can be screwed into a metal screw with equal diameter (1cm) in the two symmetrical holes, which is the quantitative soil taking rod 4 (also can be bolt, screw rod and nut), and make The two ends of this screw just screw in the quantitative soil taking hole 6, and keep the pipe wall outside smooth; earth.

Instructions:

①According to the requirements of soil borrowing, for example, to obtain the original soil column with a height of 10cm each time, fix the quantitative soil borrowing rod 4 at the quantitative soil borrowing hole 6 of 10 cm to ensure that the soil borrowing space under the soil borrowing rod is 10 cm deep.

② After the quantitative soil-taking pipe 2 is installed on the electric drill, turn on the power of the electric drill, and insert the soil-taking pipe vertically into the position where the soil is to be taken.

③ After taking out the frozen soil, insert an iron rod or a strong wooden stick into the soil removal tank 3 above the soil sample, and push down to take out the soil sample.

④For example, take 150cm deep, take 10cm each time, you can repeat steps ②③ (Note: In general areas, the thickness of the frozen layer of soil is more than 100cm, if there is no frozen layer, you don’t need to use this device, you should change it to an ordinary soil drill. soil) until 15 soil samples were obtained. Immediately put the soil sample into the aluminum box after taking each time, and then use the laboratory equipment to analyze the change of water content in different layers of the soil.

Claims (8)

1. a drawing out soil equipment for sand ground frozen soil, comprises electric drill (1) and drill bit (8), it is characterized in that: drill bit (8) external surface has screw thread, and the top of the pipe (2) that quantitatively fetches earth, with internal thread, is threaded with drill bit (8); The bilateral symmetry position of described pipe (2) outer tube wall that quantitatively fetches earth is cut with two rectangular soil boxs (3) that go along pipe range direction; The bottom tube wall of pipe (2) of quantitatively fetching earth has a plurality of teeth (7).

2. the drawing out soil equipment of a kind of sand ground frozen soil according to claim 1, is characterized in that: there is multipair circular hole (6) at described bilateral symmetry position of quantitatively fetching earth pipe (2) outer tube wall along pipe range direction, wherein in symmetrical a pair of circular hole, inserts the bar (4) that fetches earth.

3. the drawing out soil equipment of a kind of sand ground frozen soil according to claim 2, is characterized in that: described circular hole (6) goes soil box (3) separated with two.

4. the drawing out soil equipment of a kind of sand ground frozen soil according to claim 1, is characterized in that: described two are gone soil box (3) and pipe (2) the top internal thread that fetches earth to have distance.

5. the drawing out soil equipment of a kind of sand ground frozen soil according to claim 2, is characterized in that: in described a pair of circular hole (6), in a circular hole, have screw thread, the outer aperture of another circular hole is greater than internal orifice dimension.

6. the drawing out soil equipment of a kind of sand ground frozen soil according to claim 2, it is characterized in that: described in the bar (4) that fetches earth be bolt, described bolt matches with threaded circular hole, and the nut of described bolt (5) diameter equals the outer aperture of another circular hole, and is greater than the internal orifice dimension of this circular hole.

7. the drawing out soil equipment of a kind of sand ground frozen soil according to claim 1, is characterized in that: described teeth (7) with go soil box (3) to have distance.

8. the drawing out soil equipment of a kind of sand ground frozen soil according to claim 1, is characterized in that: described a plurality of circular holes are evenly arranged between the top margin and base of soil box (3).

Images