SU887982A1

SU887982A1 - Soil sampler

Info

Publication number: SU887982A1
Application number: SU792823486A
Authority: SU
Inventors: Олег Вадимович Гарбаренко; Александр Михайлович Перевозчиков; Леонид Давидович Слонимский
Original assignee: Всесоюзный Научно-Исследовательский Институт Морской Геологии И Геофизики
Priority date: 1979-10-01
Filing date: 1979-10-01
Publication date: 1981-12-07

Description

(54) УСТРОЙСТВО ДЛЯ- ОТБОРА ПРОБ ГРУНТА(54) DEVICE FOR SELECTION OF SAMPLES OF GROUND

1one

Изобретение относитс к области отбора проб, в частности морской геологоразведочной технике, дл отбора проб донных осадков на шельфе и может быть использовано в морской геологии, океанографии, инженерногеологических изыскани х.The invention relates to the field of sampling, in particular marine geological exploration technology, for sampling bottom sediments on the shelf and can be used in marine geology, oceanography, engineering and geological surveys.

Наиболее близким техническим ре .шением к изобретению вл етс устройство дл отбора проб, включающее грунтонос с крышкой, режущим наконечником и кернорвателем, поршень с механизмом фиксации контактного дей ,стви , шток и тормозной диск l .The closest technical solution to the invention is a device for sampling, including a submersible with a lid, a cutting tip and a core holder, a piston with a mechanism for fixing contact action, stem, rod and brake disc l.

Недостатком такого изобретени вл етс необходимость предварительной откачки воздуха из грунтоноса, так как по мере продвижени грунтоноса объем надпоршневого пространства уменьшаетс по линейному закону, и в конечном положении давление воздуха становитс равным гидростатическому . Таким образом, наличиеThe disadvantage of this invention is the need to pre-pump air from the submersible, since as the subgrade progresses, the volume of the piston space decreases linearly, and in the final position the air pressure becomes equal to hydrostatic. Thus, the presence

воздуха в полости вызывает снижение силы, внедр ющей грунтонос в осадки. При подъеме на поверхность воздух в надпоршневом пространстве расшир етсй , так как гидростатическое давление падает, вследствие чего часть керна выталкиваетс . Кроме того, обращение с пробоотборником при работе с откачкой воздуха на борту судна требует особой осторожности air in the cavity causes a decrease in the force that introduces the groundwater in the sediments. As it rises to the surface, the air in the overpiston space expands as the hydrostatic pressure drops, as a result of which part of the core is pushed out. In addition, handling the sampler when working with air exhaust on board a vessel requires special care.

10 в услови х качки и малой площади рабочей зоны, характерной дл маломерных судов.10 in the conditions of rolling and a small area of the working area, characteristic for small vessels.

Целью изобретени вл етс повы15 шение его производительности и безопасности работ.The aim of the invention is to increase its productivity and safety of work.

Цель достигаетс тем, что в уст ройстве дп отбора проб грунта, включающем грунтонос с крышкой, режущим The goal is achieved by the fact that in the device dp of soil sampling, including a grouser with a lid cutting

Claims

X with a tip and core gauge, a piston with a mechanism for fixing the contact action, a rod and a brake disk, the rod is made hollow with holes in the bottom edge, and the upper part of the submersible pipe is equipped with a bleed valve. Fig. 1 shows a device for soil sampling, a longitudinal section. The device consists of a ground lug 1c krpika 2, core 3, tip 4, piston 5 with a locking mechanism that opens when the pin 6 touches the ground, rod 7 connected to the piston and passing through the sealed hole in the cover 2 and the brake disc 8. On the top A bleed valve 9 is installed at the end of the primer. The rod 7 is made hollow, with the cavity connected to the ground piston perforation cavity. The eyebolt 10 serves as the bottom of the suspension device on the cable. The device works as follows. Upon contact of the ground 6 with the ground, the piston 5 is released against the submersible 1, and the latter, under the action of hydrostatic pressure acting on the cover, is inserted into the ground. When the ground plane 1 and the piston 5 move reciprocally, the air in the over piston space, which is under atmospheric pressure, compresses, enters the stem cavity, and thus its pressure changes not directly proportional to the linear movement of the ground tono.ca 1, and even The moment of the impact of the piston 5 with the crushing valve 2, the pressure in the over piston cavity becomes lower than the hydrostatic pressure, and the characteristic of its compression is more canopy than that of the main device. As the soil pipe rises to the surface, the hydrostatic pressure drops, and since the pressure in the overpiston cavity with the external hydrostatic pressure is equalized, the overpressure of the air in the stem cavity is released through the valve 9. The device dp sampling the soil is simple in operation, does not require evacuation, handling, and at the same time ensures the safety of the core and eliminates damage to the core. Eliminating the need for pre-evacuation of air reduces the number of eDyni auxiliary equipment, which is very important for work with ships. The invention includes a device for sampling of soil, including a grounding head with a bolt, a cutting tip and core ring, a piston with a contact mechanism, a rod and a brake disk, characterized in that, in order to increase its performance and safety, the rod is hollow with holes in the lower part, and the upper part of the grouser is equipped with a bleed valve. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2084678 / 29-33, cl. Q 01 N 1/02, 1974.