SU897941A1

SU897941A1 - Drill-around soil sampler

Info

Publication number: SU897941A1
Application number: SU802914432A
Authority: SU
Inventors: Альберт Васильевич Васильев
Original assignee: Производственный и научно-исследовательский институт по инженерным изысканиям в строительстве
Priority date: 1980-04-18
Filing date: 1980-04-18
Publication date: 1982-01-15

Description

Изобретение относится к строительству, в частности к технике отбора монолитов плотных песчано-глинистых грунтов, и может быть использовано при инженерно-геологических изысканиях и в .горнопроходческом деле.The invention relates to the construction, in particular, to a technique for selecting monoliths of dense sandy-clay soils, and can be used in engineering and geological surveys and in mining.

Наиболее близким к изобретению техническим решением является грунтонос, включающий коронку, корпус со шнековой спиралью и переходником, стакан с крышкой [1].Closest to the invention, the technical solution is a soil carrier, including a crown, a housing with a screw spiral and an adapter, a glass with a lid [1].

Недостатком грунтоноса является выпадение монолита трещиноватого песчано-глинистого грунта из грунтоноса · при подъеме его из скважины.The disadvantage of the soil carrier is the loss of a monolith of a fractured sandy-clay soil from the soil carrier · when it is lifted from the well.

Цель изобретения - обеспечение сохранности пробы грунта при подъеме грунтоноса.The purpose of the invention is the preservation of soil samples during the lifting of the soil carrier.

Поставленная цель достигается тем, что в грунтоносе, включающем коронку,корпус со шнековой спиралью· и переходником, стакан с крышкой, нижняя часть корпуса снабжена жестко установ ленными скребками, а коронка - монтированными по ее образующей стопорами, причем в нижней части корпуса и коронки выполнены окна, в которых установлены стопоры, опертые на стен· ⁵ ки окон,This goal is achieved by the fact that in the soil carrier, which includes a crown, a body with a screw spiral · and an adapter, a glass with a cover, the lower part of the body is equipped with rigidly installed scrapers, and the crown is mounted with stoppers along its generatrix, and in the lower part of the body and crowns windows with stoppers mounted on the walls · ⁵ windows;

На фиг. 1 представлен обуривающий грунтонос, продольный разрез( на фиг. 2 - поперечный разрез А-А на фиг.1.In FIG. 1 shows a drilling soil-bearer, a longitudinal section (in FIG. 2, a transverse section AA in FIG. 1.

Этот, обуривающий грунтонос состоит из коронки 1, корпуса 2 с шнековой спиралью 3 и переходника 4. Внутри корпуса 2 свободно расположены стакан 5 с крышкой 6, на которой размещена игла 7. В коронке 1 имеются окна 8, а в корпусе 2 - окна 9. В окнах 9 с возможностью гори·' зонтального перемещения расположены стопоры 10, жестко закрепленные на коронке 1. На корпусе 2 около каждого окна 9 вертикально жестко.установлены скребки 11.This drilling soil-carrier consists of a crown 1, a housing 2 with a screw spiral 3, and an adapter 4. Inside the housing 2, a glass 5 with a cover 6 on which the needle 7 is located is freely located. There are windows 8 in the crown 1 and windows 9 in the housing 2 In the windows 9 with the possibility of horizontal · 'horizontal movement there are stoppers 10, rigidly fixed to the crown 1. On the casing 2, near each window 9 are vertically rigidly mounted scrapers 11.

Обуривающий грунтонос работает в следующей последовательности.Drilling soil carrier works in the following sequence.

Грунтонос с помощью бурильных труб, соединенных с переходником 4 с возможностью вращения по и против часовой стрелки, опускается на забои скважины. В процессе опускания грунтоноса коронка 1, стакан 5, крышка 6 и игла 7 удерживаются от выпадения из корпуса 2 за счет стопоров 10, расположенных в окнах 9.Gruntonos using drill pipes connected to the adapter 4 with the possibility of rotation clockwise and counterclockwise, is lowered to the bottom of the well. In the process of lowering the soil carrier, the crown 1, cup 5, cover 6 and needle 7 are kept from falling out of the housing 2 due to the stoppers 10 located in the windows 9.

Затем грунтонос приводится с помощью бурильных труб во вращение по часовой стрелке (правое вращение),. При этом вращение передается от бурильных труб на коронку 1 через переходник 4, корпус 2 и стопоры 10. На фиг. 1 и 2 показано положение деталей грунтоноса при его правом вращении. Грунт, разрыхленный коронкой 1, подается по шнековой спирали 3 вверх и одновременно заполняет окна 9. По мере увеличения глубины погружения грунтоноса монолит (цилиндрический столбик) поступает сначала во внутреннюю полость коронки (не соприкасаясь с внутренними стенками коронки) , а затем плотно входит в стакан 5. При этом под действием трения монолита о внутренние стенки стакана 5 последний отделяется от ‘коронки'1 и вместе с крышкой 6 и иглой 7 поднимается вверх относитель,но корпуса 2 до упора иглы 7 в переходник 4. Монолит принимается в невращающийся стакан 5.Then, the soil carrier is driven by drill pipe in a clockwise rotation (right rotation). In this case, the rotation is transmitted from the drill pipes to the crown 1 through the adapter 4, the housing 2 and the stoppers 10. In FIG. 1 and 2 show the position of the parts of the soil carrier during its right rotation. Soil loosened by crown 1 is fed upward through a screw spiral 3 and at the same time fills windows 9. As the depth of immersion of the soil carrier increases, the monolith (cylindrical column) enters first into the internal cavity of the crown (without touching the inner walls of the crown) and then tightly enters the glass 5. In this case, under the action of friction of the monolith against the inner walls of the glass 5, the latter is separated from the “crown” 1 and, together with the cover 6 and the needle 7, the relative pressure rises, but the body 2 is inserted into the adapter 4 until the needle 7 rests against the monolith. Tight glass 5.

После заполнения стакана 5 монолитом осуществляется смена правого вращения на левое вращение бурильных труб без увеличения глубины погружения грунтоноса в грунт. В первый момент левого вращения происходит перемещение по дуге корпуса 2 относительно коронки 1, зажатой наAfter filling the cup 5 with a monolith, the right rotation is changed to the left rotation of the drill pipes without increasing the depth of immersion of the soil carrier in the soil. At the first moment of left rotation, there is a movement along the arc of the housing 2 relative to the crown 1, clamped on

897941 ₄ кольцевом забое грунтом. При этом стопоры 10 перемещаются в окнах 9 до упора стопоров 10 в корпус 2 и совмещения окон 9 с окнами 8. Раз5 рыхленный грунт, расположенный на шнековой спирали 3, под действием трения о наружные стенки корпуса 2 и стенки скважины постепенно перемещаются по шнековой спирали 3 вниз Ю и частично, захватываясь скребками897941 ₄ ring bottom face. In this case, the stoppers 10 are moved in the windows 9 until the stoppers 10 stop in the casing 2 and the windows 9 are aligned with the windows 8. The loosened soil located on the screw spiral 3 under the action of friction against the outer walls of the housing 2 and the borehole walls gradually move along the screw spiral 3 down Yu and partially grabbed by scrapers

11, через окна 9 и 8 поступает в зазор между внутренними стенками коронкй 1 и монолитом. Грунт, попавший в этот зазор, уплотняется под действием давления новых порций грунта, поступающих через окна 9 .и 8. Таким образом, часть монолита, расположенная в коронке, плотно перекрывает входное отверстие грунто20 ^{1 носа} ·11, through the windows 9 and 8 enters the gap between the inner walls of the crown 1 and the monolith. Soil that has fallen into this gap is compacted under the action of pressure of new portions of soil entering through windows 9. And 8. Thus, the part of the monolith located in the crown tightly covers the inlet of the soil 20 ^{1 of the nose} ·

Левое вращение грунтоноса прекращается, и он извлекается из скважины. При подъеме грунтоноса монолит надежно удерживается в стакане 5.The left rotation of the soil carrier stops and it is removed from the well. When lifting the soil carrier, the monolith is firmly held in a glass 5.

Claims

The invention relates to the construction, in particular to the technique of selecting monoliths of dense sandy-clay soils, and can be used in engineering-geological surveys and in the mining tunnel. The technical solution that is closest to the invention is the submersible, including a box, a housing with a screw spiral. and an adapter a glass with a lid Hi. The disadvantage of the soil tonnage is the loss of the monolith of fissured sandy-clay soil from the soil of the nose when it is lifted from the skagina. The purpose of the invention is to ensure the preservation of soil samples during the lifting of the submersible. The goal is achieved in those in the submersible, including a crown housing with a screw spiral and an adapter, a glass with a lid, the lower part of the body is equipped with rigidly mounted scrapers, and the crown is mounted with stoppers at its component, and in the lower part of the body and crown there are windows, in which stoppers are installed, supported on the walls of windows; FIG. 1 shows a mating soil plane, a longitudinal section j in FIG. 2 is a cross-section A-A in FIG. This grounding nose consists of a crown 1, a body 2 with a screw spiral 3 and an adapter k. Inside the case 2, there is a freely positioned cup 5 with a lid 6, on which the needle 7 is placed. In the crown 1 there are windows 8, and in the case 2 there are windows 9. In the windows 9 there are stoppers 10 that can be moved horizontally and rigidly fixed on the crown 1. On case 2 near each window 9 is vertically rigid. The scrapers 11 are installed. The submersible trainer operates in the following sequence. The grunthos with drill pipes connected to adapter k rotatably and counterclockwise is lowered onto the well intake. In the process of lowering the soil crown 1, the cup 5, the lid 6 and the needle 7 are prevented from falling out of the body 2 due to the stoppers 10, located in the windows 9. Then the ground lug is driven clockwise by the drill pipes (right rotation is transmitted from the pipe to the crown 1 via the adapter C, the body 2 and the stoppers 10, Fig. 1 and 2 show the position of the parts of the submersible at its right rotation. The soil loosened by the crown 1 goes up along the screw spiral 3 and simultaneously fills the windows 9. As g increases The soil of the subsoil monolith (cylindrical column) enters first into the internal cavity of the crown (not in contact with the internal walls of the crown), and then fits tightly into the cup 5. At the same time, under the influence of the friction of the monolith on the inner walls of the cup 5 and together with the lid 6 and the needle 7, the relative is raised, but the body 2 until the needle 7 stops against the adapter I. The monolith is received into a non-rotating cup 5. After filling the cup 5 with the monolith, the right rotation is changed to the left nyh pipe without increasing the immersion depth corer into the soil. At the first moment of the left rotation, movement occurs along the arc of the housing 2 relative to the crown 1, clamped on the 14th annular bottomhole. In this case, the stoppers 10 move in the windows 9 until the stoppers 10 in the case 2 and the windows 9 are aligned with the windows 8. The loosened soil located on the screw coil 3 is gradually moved down along the screw coil 3 by the action of rubbing against the outer walls of the case 2 and the borehole wall and partially, by gripping the scrapers 11, through the windows 9 and B enters the gap between the inner walls of the crown 1 and the monolith. The soil trapped in this gap is compacted by the pressure of new portions of soil entering through windows 9 and 8. Thus, the part of the monolith located in the crown tightly blocks the inlet of the submersible. The left rotation of the primer stops and is removed from the well. When lifting the primer, the monolith is securely held in the glass 5. Claim Formula Surviving primer, including a crown, a housing with a screw spiral and an adapter, a glass with a lid, characterized in that, in order to ensure the preservation of the soil sample when lifting the submersible, the lower part of the housing is fitted with rigidly installed scrapers, and the crown - mounted on its forming stoppers, and in the lower part of the body and the crown there are windows in which the stoppers are installed, supported on the walls of the windows. Sources of information taken into account in the examination 1. USSR author's certificate tf, cl. E 02 D 1/00, 1971.