CN103670394B - A kind of drawing out soil equipment of sand ground frozen soil - 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 is threaded, and the top of the quantitative soil-taking pipe is provided with an internal thread, which is threadedly connected with the electric drill bit; 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 effect 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 very difficult to obtain accurate soil samples at precise depths.

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 electric drill bit is threaded; the symmetrical parts on both sides of the outer pipe wall of the quantitative soil taking pipe are 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.

Fig. 2 is a structural schematic diagram of the quantitative soil-taking pipe of the present invention.

Fig. 3 is a schematic diagram of the cross-sectional structure of the quantitative soil-taking pipe installed with the soil-taking rod of the present invention.

detailed description

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 (Fig. 1). The quantitative soil-taking pipe 2 for frozen soil is threaded on the drill pipe of the electric drill 1. Thick 0.35cm, long 24cm, inner diameter is 4.3cm; As shown in Figure 2, at the position that the both sides symmetry of permafrost quantitative soil taking pipe 2 is apart from the bottom 2cm place, cutting is wide and is the hollow groove that 1cm is long and is 20cm, takes It is called the soil removal tank 3; 8 holes are dug on both sides of the soil removal tank 3, and they are named as quantitative soil taking holes 6. There are 4 symmetrical distributions on the left and right sides. Aperture is 1cm, and outer aperture is 1.5cm, and thread is machined in the hole, and as shown in Figure 3, can screw in the metal screw of an equal diameter (1cm) in the two symmetrical holes and be quantitative earth taking rod 4 ( It can also be a bolt, a screw rod and a nut), and the two ends of the screw are just screwed into the quantitative soil-taking hole 6, and keep the outside of the pipe wall smooth; the outer end of the head pipe wall of the quantitative soil-taking pipe 2 is continuous teeth, The tooth height is 0.4cm, and the width is 1cm, which is convenient for soil extraction.

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 to a depth of 150cm, take 10cm each time, you can repeat the steps ②③(Note: The thickness of the frozen soil layer in general areas is more than 100cm, if there is no frozen layer, you don’t need to use this device, it should be changed 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 instrument to analyze the change of water content in different layers of the soil.

Claims (7)

1. A kind of earth-borrowing device of sandy ground permafrost, comprises electric drill (1) and drill bit (8), it is characterized in that: drill bit (8) outer surface has screw thread, and the top of quantitative soil-borrowing pipe (2) has internal thread, It is threadedly connected with the electric drill bit (8); two rectangular soil-removing grooves (3) are cut along the pipe length direction on the symmetrical parts on both sides of the outer pipe wall of the quantitative soil-taking pipe (2); the bottom of the quantitative soil-taking pipe (2) The end pipe wall has multiple teeth (7); The quantitative soil-taking pipe (2) is a steel pipe, and there are multiple pairs of round holes (6) on both sides of the outer pipe wall symmetrically along the pipe length direction, wherein soil-taking rods (4) are inserted into the symmetrical pair of round holes. 2 . The soil fetching device for sandy and frozen soil according to claim 1 , characterized in that: the circular hole ( 6 ) is separated from the two soil removal tanks ( 3 ). 3 . The soil fetching device for sandy frozen soil according to claim 2 , characterized in that: there is a distance between the two soil removal tanks ( 3 ) and the internal thread on the top of the soil fetching pipe ( 2 ). 4 . 4. The earth-borrowing device for a kind of sandy ground permafrost according to claim 1, characterized in that: one of the pair of circular holes (6) has threads in it, and the outer diameter of the other circular hole is larger than that of the inner hole. aperture. 5. The earth-borrowing device for a kind of sandy frozen soil according to claim 1, characterized in that: the soil-borrowing rod (4) is a bolt, and the bolt is matched with a threaded round hole, and the bolt is The diameter of the nut (5) equals the outer diameter of another circular hole, and is greater than the inner diameter of the circular hole. 6. The soil fetching device for sandy and frozen soil according to claim 1, characterized in that there is a distance between the teeth (7) and the soil removal tank (3). 7 . The soil fetching device for sandy and frozen soil according to claim 1 , characterized in that: the plurality of circular holes are evenly arranged between the top edge and the bottom edge of the soil removal tank ( 3 ).