CN103670394A

CN103670394A - Earth-taking device for sand frozen earth

Info

Publication number: CN103670394A
Application number: CN201210319869.3A
Authority: CN
Inventors: 宗芹; 阿拉木萨; 牛存洋
Original assignee: Institute of Applied Ecology of CAS
Current assignee: Institute of Applied Ecology of CAS
Priority date: 2012-08-31
Filing date: 2012-08-31
Publication date: 2014-03-26
Anticipated expiration: 2032-08-31
Also published as: CN103670394B

Abstract

The invention relates to an earth-taking device for sand frozen earth. The earth-taking device for sand frozen earth comprises an electric drill and a drill bit, wherein threads are arranged on the outer surface of the drill bit, inner threads are arranged at the top end of a quantitative earth-taking tube, the quantitative earth-taking tube is in thread connection with the drill bit of the electric drill, two rectangular earth-removing grooves are formed in symmetrical positions at two sides of the outer tube wall of the quantitative earth-taking tube in a cutting mode in the tube length direction, and a plurality of teeth are arranged on the tube wall of the bottom end of the quantitative earth-taking tube. An original state frozen earth sample can be obtained conveniently and rapidly by means of the earth-taking device of sand frozen earth. Besides, due to the action of the quantitative earth-taking tube, the original state frozen earth samples of various lengths can be accurately taken at one shot. Meanwhile, earth in the steel tube can be rapidly taken out by utilizing holes of the earth-removing grooves. The earth-taking device for sand frozen earth is convenient and rapid to use, and can solve the problem of taking the frozen earth in sand.

Description

A kind of drawing out soil equipment of sand ground frozen soil

Technical field

The present invention relates to a kind of sampler of frozen soil, is mainly for sand ground frozen soil, to fetch earth to measure the drawing out soil equipment of its water content.

Background technology

In soil freezing process, there is migration and redistribute in the moisture in soil, and this is a key problem in soil freezing effect research.In carrying out relevant permafrost region soil water regime research work; the moisture that needs Accurate Measurement freezing soil; but traditional soil sampling apparatus mainly for be the soil sample work under normal temperature; it cannot obtain qualified frozen soil sample in freezing soil; simultaneously; limitation due to traditional sampling method; earth boring auger can not carry out quantitative fetching earth; the amount fetching earth is generally to come quantitatively with the mark in earth boring auger outside; often there will be the situation of getting more or getting less, therefore in soil sample, be difficult to accomplish accurately to obtain the pedotheque of the accurate degree of depth.

Summary of the invention

For the deficiencies in the prior art, the invention provides a kind of convenient and swift device of obtaining original state frozen soil sample.

The technical scheme that the present invention adopted is for achieving the above object: a kind of drawing out soil equipment of sand ground frozen soil, comprise electric drill and drill bit, and it is characterized in that: drill bit external surface has screw thread, the top of the pipe that quantitatively fetches earth, with internal thread, is threaded with drill bit; Described bilateral symmetry position of quantitatively fetching earth pipe outer tube wall is cut with two rectangular soil boxs that go along pipe range direction; The bottom tube wall of pipe of quantitatively fetching earth has a plurality of teeth.

There is multipair circular hole at described bilateral symmetry position of quantitatively fetching earth pipe outer tube wall along pipe range direction, wherein in symmetrical a pair of circular hole, inserts the bar that fetches earth.

Described circular hole goes soil box separated with two.

Described two are gone soil box and the pipe top internal thread that fetches earth to have distance.

In described a pair of circular hole, in a circular hole, have screw thread, the outer aperture of another circular hole is greater than internal orifice dimension.

The described bar that fetches earth is bolt, and described bolt matches with threaded circular hole, and the nut diameter of described bolt equals the outer aperture of another circular hole, and is greater than the internal orifice dimension of this circular hole.

Described teeth with go soil box to have distance.

Described a plurality of circular hole is evenly arranged between the top margin and base of soil box.

The present invention has following beneficial effect and advantage:

1. the present invention solves the difficulty that sand ground frozen soil quantitatively fetches earth, utilize instrument of the present invention can conveniently obtain original state frozen soil sample, and due to the effect of the bar that quantitatively fetches earth, can once get exactly 5cm, 10cm, the original-state soil post sample of 15cm or 20cm length.

2. utilize and go the hole of soil box fast the soil of getting in steel pipe to be taken out simultaneously.This method is convenient and swift, can solve the difficulty that sand ground is got frozen soil.

Accompanying drawing explanation

Fig. 1 is drawing out soil equipment schematic diagram of the present invention.

The specific embodiment

Below in conjunction with drawings and Examples, the present invention is described in further detail.

The difficulty fetching earth in order to overcome sand ground frozen soil, the invention provides a kind of novel sand ground frozen soil drawing out soil equipment, and this device can be got earth's surface and following frozen soil sample.

This instrument mainly forms (Fig. 1) by electric drill 1 and frozen soil 2 two parts of pipe that quantitatively fetch earth, and this frozen soil pipe that quantitatively fetches earth 2 is threaded on the drilling rod of electric drill 1, and the pipe that fetches earth is made by hard steel pipe, thickness of pipe wall 0.35cm, and long 24cm, internal diameter is 4.3cm; At frozen soil, quantitatively fetch earth pipe 2 monosymmetric position apart from 2cm place, bottom, cut open widely for 1cm length is the groove of 20cm, be named as soil box 3; In the both sides of removing soil box 3, dig altogether 8 hole called afters hole 6 of quantitatively fetching earth, each 4 of left and right are symmetrical, wherein all apertures of a side are 1cm, the all internal orifice dimensions of opposite side are 1cm, and outer aperture is 1.5cm, thread cutting in hole, it can also be bolt that the metallic screw that can screw in isometrical (1cm) in two holes of symmetry is the bar 4(that quantitatively fetches earth, screw rod and nut), and the lucky screw-in in two ends of this screw is quantitatively fetched earth in hole 6, and keep tube wall external side light sliding; Pipe 2 the head tube wall outer end of quantitatively fetching earth is continuous teeth, teeth height 0.4cm, and width is 1cm, is convenient to fetch earth.

Using method:

1. according to fetching earth requirement, for example, obtain the original-state soil post of 10cm height at every turn, the bar 4 that quantitatively fetches earth is fixed on to 6 places, hole that quantitatively fetch earth of 10cm, guarantee the space 10cm degree of depth that fetches earth fetching earth under bar.

2. after the pipe 2 that will quantitatively fetch earth is installed on electric drill, open the power supply of electric drill, fetched earth in the vertical position that will fetch earth of inserting of the pipe that fetches earth.

3., after getting frozen soil, what with iron staff or solid waddy, be inserted in soil sample top removes 3 li of soil boxs, promotes downwards just soil sample to be taken out.

4. for example get 150cm depths, get 10cm at every turn, just constantly repeating step 2. 3. (note: general Soils In The Region freezes layer thickness more than 100cm, just does not need to install with this if freeze layer, should change common earth boring auger into fetches earth), until get 15 soil samples.After taking, immediately soil sample is packed in aluminium box, re-using experiment chamber instrument can be analyzed the variation of different levels water content in soil at every turn.

Claims

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).