SU1511622A1 - Apparatus for sampling ground - Google Patents

Abstract

This invention relates to a soil research technique. The purpose of the invention is to increase the representativeness of the sample and to ensure the possibility of its selection from a predetermined depth, determining the strength properties of the soil in the array and ensuring the possibility of carrying out static sounding of the soil in the array during sampling. The device comprises a housing 1 with a receiving sleeve 2 and an additional housing 3. The housing 1 and 3 are connected by rigid couplings 4. At an equal distance from the housing 1 and 3, the sleeve 5 is fixed on the connections x 4, through which the rod 6 freely passes. Above and below the additional body 3, protective cones 7 and 8 are placed coaxially with it. In the intervals between the additional body 3 and cones 7 and 8 there are disks 15 and 16 with shanks fixedly mounted on the rod 6. At the upper end of the rod 6 there is a device 17 for turning it around the axis. The disks are interconnected by a jumper 18. Inside the stem 6 there is a rod 19, at one end of which a tapered tip 20 is made, and on the other there is a dynamometer 21. 2 Cp. f-ly, 2 ill.

Description

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the sleeve 5 through which the rod 6 freely passes. Above and below the additional body 3, protective cones 7 and 8 are placed coaxially with it. Discs 15 and 16 are located between the additional body 3 and cones 7 and 8 with shanks fixedly mounted on the rod 6. On

The invention relates to a technique for ground investigation, which serves as a foundation, medium or material for the construction of hydropower, industrial and civil engineering facilities, and can be used to sample undisturbed soil samples for subsequent study of its physico-mechanical properties in laboratory conditions. .25

The purpose of the invention is to increase the representativeness of the sample and to ensure the possibility of its selection from a predetermined depth, determining the strength properties of the soil in the array at the same time 30 with sampling and ensuring the possibility of carrying out static sounding of the soil in the array during sampling.

Figure 1 shows the proposed Z5 device, a general view; figure 2 is the same, top view (section aa in figure 1).

The device includes a housing 1 with a receiving sleeve 2 and an additional housing 3.40

Case 1 and additional case 3 are interconnected by means of rigid connections 4, having (when viewed from above) a relatively small area of cross-section (Fig. 2).

At an equal distance from the housing 1 and the additional housing 3 on the rigid connections x 4, the sleeve 5 is fixed, through which the free-floor passes the brush 6 for the Q push.

Above and below the additional body 3, protective cones 7 and 8 are placed coaxially with it. The position of cones 7 and 8 relative to the additional body 55 ca 3 is fixed by means of rigid couplings 9 and 10, respectively, and sleeves 11 and 12, freely attached to the rod 6.

the upper end of the rod is placed fixture 17 for turning it around the axis. The discs are interconnected by a jumper 18. Inside the stem 6 there is a rod 19, at one end of which a conical tip 20 is made, and on the other there is a dynamometer 21. 2 Cp. f-ly, 2 ill.

The rigid connections are 4.9 and 10, fastened together by means of jumpers (stiffeners) 13, and 14.

In the intervals between the additional body 3 and the cones 7 and 8 placed disks 15 and 16 with shanks fixedly mounted on the rod 6. The shanks, holding the disks 15 and 16 coaxially with the additional body 3, at the same time limit the longitudinal movement of the sleeve 5 relative to the rod 6 and at the same time they do not prevent its rotation around its axis or, which is equivalent, the rotation of the stem 6 relative to the sleeve 5.

The upper end of the rod 6 is equipped with a device for its rotation around the axis. In the simplest case, this device can be made in the form of a crank 17 for turning the stem manually, however, to increase the torque, the device for turning the stem can contain a corresponding transmission with a manual or mechanical drive.

The disks 15 and 16 are interconnected by a flat bridge 18 located in the plane of the rigid connections 4 outside the additional body 3.

A rod 19 is located inside the stem 6. At the lower end, the rod 19 is provided with a standard cone 20 for static sounding of soils, and at the upper end with a dynamometer 21.

The device works as follows.

The device is installed on the ground surface and a crushing force is applied to the upper end of the rod 6, which for weak soils can be created manually, and for denser soils by means of any mechanical means (for example, drilling rig hydraulics or static sounding devices)

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Under the influence of the applied vertical force, the device is driven into the ground to a predetermined depth for sampling,

During the crushing process, the soil freely passes through the housing 1 and, since the ratio of the height and diameter of the housing 1 is chosen from the optimum conditions, its addition is not disturbed. At the same time, an additional body 3, rigidly connected to body 1, is immersed in the ground.

The lower protective cone 8 facilitates the introduction of an additional body 3 into the ground, and the relative position of the body 3 and the cones 7 and 8 protects the disks 15 and 16 from the impact of the ground.

After immersing the device to a predetermined depth with the help of special tool 17, rotate the rod 6 to 180 "

At the same time, due to the large lateral resistance of the rigid connections 4 and housings 1 and 3, the latter remain motionless, and the disks 15 connected by the shanks to the rod 6 - and 16 leave the gaps between the additional housing 3 and the cones 7 and 8, are cut from above and below The sample located in the receiving sleeve 2 of housing 1 completely overlaps the opening in housing 1. When the stem 6 is turned 180 °, jumper 18 will work like a known impeller and by the maximum torque value, you can determine the strength properties of the soil in masses ve in the sampling of undisturbed adding depth.

After the discs 15 and 16 of the housing 1 with the soil sample in the receiving sleeve 2 overlap, a suppressing force is applied to the upper end of the rod 19 through a dynamometer, causing the rod 2; 2 to move downwards relative to the fixed rod 6 (frontal resistance of the housing 1 blocked by the disks 15 and 16, rigid connections 4 with bridges 13 and 14, and an additional body 3 with cones 7 and 8 use only the front resistance of the standard for static sounding cone 20), as a result of which the cone 20 will be submerged in the ground, providing with inamometra 21

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the possibility of obtaining the characteristics of .. soil during static sensing. The device is then removed to the surface along with the sample taken (soil,

F-rmula invention

1o A device for sampling soil, such as moving, plastic; soft and fluid consistency, including a housing with a receiving sleeve, horizontal shutoffs,

STEM, for pushing a device with a handle, characterized in that, in order to increase the representativeness of the sample and ensure its selection from a predetermined depth, it

provided with an additional housing made in the form of a cylinder with protective cones located at its ends with a gap, while the pressure rod is made with a conical tip and provided with a sleeve fixed with it that can be rotated around its axis with rigid connections of equal length in the form of frames for fixing housings on it, and horizontal cut-offs are made in the form of an additional body placed between the ends of the body and protective cones of discs with shanks fixed on the stem for crushing,

2. The device according to claim 1, characterized in that, in order to determine the strength of soil in the array at the same time as the sample is taken, the disks are equipped with a flat jumper for connection between each other, located in the plane of rigid connections outside the additional body, and the setting rod weave is equipped with a maximum torque sensor,

3, the device according to claim 1, characterized in that, in order to ensure that static zones of soil are carried out in the array when picking up samples, the stock for crushing is hollow, and its conical head is provided with a tanga located in the rod; axial force sensor mounted on the upper end of the rod.

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±. FIG. 2

Claims (3)

Claim 10 1. Device for sampling soil, for example, loose, plastic; soft plastic and fluid consistency, including a housing with a receiving sleeve, horizontal shutoffs, 15, for crushing a device with a handle, characterized in that, in order to increase the representativeness of the sample and ensure its selection from a given depth, it is equipped with an additional body made in the form of a cylinder with protective cones located at its ends with a gap, while the rod for of crushing is made with a conical tip and equipped with a sleeve fixed on it with the possibility of rotation around its axis with rigid couplings of equal length in the form of a frame for mounting cases on it, and horizontal 30 cut-offs filled in the form of disks placed between the ends of the additional body and the protective cones with shanks mounted on the rod for crushing. 35 2. The device according to claim 1, characterized in that, in order to determine the strength of soil soil in the array at the same time as sampling, the disks are equipped with a flat front toe for connection to each other, located in the plane of rigid ties outside the additional housing, and the handle the crushing rod is equipped with a maximum torque sensor. 3. The device according to claim 1, characterized in that, in order to ensure static sounding of the soil in the array when sampling 50, the rod for crushing is hollow, and its conical tip is equipped with a rod located in the rod, while the device is equipped with an axial force sensor mounted on the upper end of the bar.