EP1182355B1 - Dispositif pour drainer un sol en profondeur - Google Patents
Dispositif pour drainer un sol en profondeur Download PDFInfo
- Publication number
- EP1182355B1 EP1182355B1 EP01440281A EP01440281A EP1182355B1 EP 1182355 B1 EP1182355 B1 EP 1182355B1 EP 01440281 A EP01440281 A EP 01440281A EP 01440281 A EP01440281 A EP 01440281A EP 1182355 B1 EP1182355 B1 EP 1182355B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- drain
- liquid
- compressed air
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
- F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
- F04F1/08—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped specially adapted for raising liquids from great depths, e.g. in wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
Definitions
- the present invention relates to a device for draining a deep soil at means of at least one drain, said drain comprising at least one closed chamber its lower part by a lower partition comprising at least one arranged flapper to open when the room is in depression and close when the room is in overpressure with respect to the outside, the chamber comprising at least one detector level of the liquid to be discharged through the drain within said chamber, at least one compressed air supply pipe terminating in the upper zone of the chamber and minus a pipe for discharging the liquid discharged from said chamber by the air tablet ending in the lower zone of said chamber, the chamber being closed in its upper part by an upper partition disposed in depth in the drain, the upper partition having at least two passages for receiving at minus the level sensor and the compressed air inlet hose.
- Such a device may be particularly suitable for draining soil following a deep landslide. Indeed, during a landslide whose shear surface is located at a significant depth, that is to say higher at about ten meters, stabilization techniques are very limited and it is often necessary to be content to follow the deformation without being able to stabilize it. Given the enormous masses to stabilize, the mechanical stabilization solutions are far too heavy
- Drains known as "siphons" can also be used for which the evacuation of the liquid is by traditional siphoning.
- the depth to which can drain the liquid is limited by the maximum height difference between the high point of the siphon and its outlet and by the possibilities of atmospheric pressure.
- This solution requires an outlet in sufficient height relative to the siphon head and its yield is decreased when the liquid, for example water, is responsible for suspended matter, which is usually the case during a landslide.
- Pumping systems are also very useful for pumping liquids more light as water floating on the surface of the water table. For example, leaks oil pipelines or following oil transport accidents, it happens Frequently, large oil spills spread and enter the the groundwater to reach the water table, causing pollution difficult to to stem and even more to treat. Since hydrocarbons are lighter than water, they float on the surface of the water table and form an upper layer. To to evacuate these hydrocarbons, existing drainage and pumping systems pump a large quantity of water from the water table, possibly mixed to hydrocarbons. This mixture must be treated in settling tanks This considerably increases the cost and the duration of the operation.
- German patent DE-B-1,242,516 discloses a device such as described in the preamble.
- the pumping chamber extends to the upper part of the drain and therefore defines a large volume that must be supplied with compressed air for drain the liquid from the drain.
- the device uses alternately in the chamber pumping of compressed air or a depression, to chain without stopping the filling and evacuation phases of the liquid. Then there may be a unnecessary consumption of air if there is no liquid to pump into the ground as well as the consumption of compressed air is not limited to the needs of drainage. More especially this can also cause a malfunction of the drain when unnecessary consumption of air if there is no liquid to pump into the ground as well as the consumption of compressed air is not limited to the needs of drainage.
- this drain is also connected to a suction source putting the outside of the pumping chamber into depression favoring the entry of liquid in the lower part of the drain which complicates still moreover the operation of this drain. Due to its high energy consumption and particularly in compressed air, this drain is therefore expensive to implement and is not suitable for use in great depth.
- the present invention aims to overcome these disadvantages by proposing a device innovative, simple and economical that allows to drain a soil at great depth, able to operate at almost zero and / or discontinuous rates, usable with liquids contaminated with impurities, to drain liquids floating on the surface another liquid deep in the soil while requiring only drilling of small diameters, by limiting energy consumption and in particular by adjusting the compressed air consumption to the amount of liquid to be evacuated.
- the invention relates to a device of the kind indicated in the preamble, characterized in that the liquid discharge pipe comprises at least one valve anti-return side of its end terminating in the chamber, in that said compressed air supply pipe is connected to a reserve of compressed air, and in that the level detector consists of a three-wire electrical cable each being terminated by a contact and resulting in different levels, respectively a first contact near the bottom of the chamber below the pipe liquid discharge, a second contact slightly above the pipe evacuation of the liquid then a third contact near the end of the pipe compressed air supply.
- the level detector is connected to a control solenoid valve electrically powered and itself connected to a solenoid valve three lanes connected to the supply of compressed air and arranged to inject compressed air when the liquid level in the chamber reaches the third touch and to stop the injection of compressed air when the liquid level passes below the second contact.
- the reserve of compressed air can be fed by a compressor.
- the liquid discharge pipe can advantageously be directed into a zone of height difference below its outlet level of the drain to constitute a cane of siphoning when the water level is located above the downstream end of the cane siphoning, itself located less than ten meters in height of the head of the drain allowing a phase of gravity pumping.
- the drain advantageously comprises a U-shaped pumping tube outside the chamber and having a small branch connected to the lower partition opposite the valve and a large branch oriented so that the orifice of its free end is at least at the level of the higher of said chamber.
- the pumping tube comprises preferably means for varying length and means for flotation of its
- this pumping tube can be constituted at least two tube portions arranged to fit at least partially within each other in a nesting area and that at least one of the portions of tube is movable in translation relative to the other, these tube portions and their zone interlocking forming said means of variation of length.
- These tube portions preferably comprise sealing means arranged to ensure the tightness of the nesting zone and the free end includes at least a filter covering the orifice, the filter being arranged to allow only the entry of liquid in the pumping tube through this orifice.
- the drain advantageously comprises at least minus two superimposed rooms, the rooms being separated by at least one intermediate partition arranged to allow the passage of the liquid present in the drain in at least the upper chamber, the upper partition of each chamber having at least two passages for receiving at least one level detector and a compressed air inlet pipe, and the lower wall of each having minus one passage to receive a liquid drain pipe.
- the device may comprise a series of drains as defined above, each drain having its own solenoid valve control and its own solenoid valve, all solenoid valves being fed by a single supply of compressed air powered by a compressor.
- the drainage device 20, 20a, 20b comprises a drain 1, 1a, 1b positioned in a wellbore.
- This drain 1, 1a, 1b could of course be launched, that is to say, pressed by liquid injection or put in place by any other known method.
- the drain 1, la, 1b is put in place vertically but can also be inclined.
- a protective pipe 15 in which opens the drain 1, 1a, 1b is hollowed substantially perpendicularly to this drain 1, la, 1b. It includes manholes 2 allowing access to the drain 1, la, 1b. It is of course possible to predict that the drain 1, 1a, 1b opens directly at ground level, its upper end being held by a collar for example.
- the drain 1, 1a, 1b has on the side of its lower end at least one chamber 3, 3a, 3b, 3c constituting a closed volume.
- This chamber 3, 3a, 3b, 3c is closed in its lower part by a lower partition 17, 17a, 17b, 17c comprising at least a valve 4, 4a, 4b, 4c and in its upper part by an upper partition 16, 16a, 16b, 16c.
- the chamber 3, 3a, 3b, 3c is positioned deep inside the drain 1, la, 1b so that its lower partition 17, 17a, 17b, 17c is close to the lower end of the drain 1, 1a, 1b in contact with the liquid to be pumped and that the upper partition 16, 16a, 16b, 16c is itself arranged in depth and sufficiently far from the ground depending on the depth of the borehole.
- the valve 4, 4a, 4b, 4c is arranged to open and let into the chamber 3, 3a, 3b, 3c the liquid to be pumped when the chamber 3, 3a, 3b, 3c is in depression by outside ratio and close when the chamber 3, 3a, 3b, 3c is overpressure. Any other system providing the same functions can of course be used.
- the chamber 3 is integrated in the drain 1.
- the wall of the drain 1 on the height of the chamber 3 is full and unpainted to constitute a closed volume.
- the chamber 3 can be dissociated from the drain and carried by a support, the drain can then present a cracked part.
- the upper partition 16 of the chamber 3 has three passages for receiving a level detector 5 of the liquid to be discharged, a compressed air supply pipe 6 of which the lower end terminates in the upper zone of chamber 3 and a pipe 7 discharge of the liquid discharged from the chamber 3 whose lower end ends in the lower zone of the chamber 3.
- the level detector 5 of the liquid to be evacuated is constituted by an electric cable having three wires, each wire being stopped at different depths and whose end is stripped and terminated by a contact. So, a wire is stopped at near the bottom of chamber 3, below the exhaust pipe 7 defining a first contact A. Another wire is stopped at a slightly upper (about 10 cm) at the end of the outlet pipe 7 defining a contact B and the last wire is stopped in the upper part of the chamber 3 defining a third contact C.
- the contacts A, B, C are intended to detect the level of liquid in the room 3 respectively slightly above the exhaust pipe 7 of the liquid and at the level of the hose 6 of compressed air supply.
- electrical contacts A and B must be immersed in the liquid contained in the chamber 3 to trigger the evacuation of the liquid and the contacts A and C must be immersed in the liquid to trigger the cessation of this evacuation.
- the level detector 5 is connected to a solenoid valve control 9 powered electrically and activating a three-way solenoid valve 10.
- the air inlet pipe 6 compressed passes into the protective pipe 15 and its other end is connected to the three-way solenoid valve 10, itself connected, by means of a valve 11, reserve 12 compressed air supplied by a compressor 13.
- the reserve 12 is regulated between a minimum pressure and a maximum pressure.
- the solenoid valve 10 is arranged to inject compressed air into the chamber 3 by the compressed air supply pipe 6 when the liquid level in said chamber 3 reaches the contact C near the end of the compressed air inlet pipe 6, to stop the injection of compressed air when the fluid level passes below second contact B and to return the chamber 3 to atmospheric pressure.
- the discharge pipe 7 comprises at least one non-return valve 8 chosen for support the weight of the evacuated liquid column.
- the exhaust pipe 7 passes in the protective pipe 15 and goes to an outlet 14 located at one side and at a distance indifferent.
- the hose evacuation 7 as siphoning cane if the height of the outlet 14 allows it. For this, it will be driven in a lower elevation zone compared to the point top of the siphon. Its end can then be treated by raising it upwards, either by immersing it in a tank filled with liquid, the whole then allowing to work according to a principle of siphoning.
- the device according to the invention constitutes an electropneumatic drain which functions the following way: when the column of liquid within the borehole reaches a certain height, the chamber 3 is then in depression with respect to the pressure exerted by the liquid. As a result, the valve 4 opens, the drilling liquid being then enter the chamber 3 by hydrostatic pressure alone from the column of liquid. At the same time, chamber 3 is put under atmospheric pressure by through the pipe 6 and the solenoid valve 10 whose open air path is open. This device thus makes it possible not to keep the chamber 3 under pressure or depression. The regulation system is thus simplified, more economical and more reliable even with liquids contaminated with impurities.
- the passage of the liquid in front of the contact B opens the circuit of solenoid valve 10. When chamber 3 is full of liquid, the contact C opens the solenoid valve 10 so as to inject compressed air through the pipe 6. The chamber 3 is then overpressurized with respect to the outside and the valve 4 closes.
- the compressed air pushes the liquid out of the chamber 3 through the pipe discharge 7 leading to the emptying of said chamber 3, until the liquid back to the contact B, then inducing the closing of the solenoid valve 10 and the delivery of room 3 at atmospheric pressure.
- the liquid contained in the discharge pipe 7 can not fall back into the chamber 3 due to the one or more check valves 8.
- discharge pipe 7 is used as a siphon pipe, said pipe discharge 7 is then initiated, the evacuated volume of the chamber 3 being calibrated to to be greater than the volume necessary for the discharge pipe 7 to begin.
- the siphon debits then until its possible defusing.
- the operation can be renewed periodically a large number of times to result in the emptying of the borehole.
- the chamber 3a is dissociated from the drain la and is carried by a support (not shown).
- the drain 1a then has a part that is stripped over all or part of its height.
- the upper partition 16a of the chamber 3a has three passages for receiving a level detector 5a of the liquid to be discharged, a hose 6a of compressed air supply and a discharge pipe 7a of the discharged liquid out of room 3a.
- the level detector 5a of the liquid to be evacuated is similar to that described previously and defines the contacts Aa, Ba and Ca for detecting the level of liquid in chamber 3a respectively slightly above the pipe inlet discharge 7a of the liquid and at the hose 6a of compressed air supply.
- This drain 1a further comprises a pumping tube 19 U-shaped outside the chamber 3a and provided with a short branch 23 connected to the lower partition 17a in view of the valve 4a and a long branch 24 substantially vertical and oriented so that the orifice 21 of its free end 22 is substantially at the most top of bedroom 3a.
- This pumping tube 19 comprises means of variation of length 25 allowing to vary for example the length of the long branch 24 and more particularly the height of its orifice 21.
- the pumping tube 19 is for example consisting of two portions of tubes 26, 27, a first portion of tube 26 connected to the lower partition 17a and forming the short branch 23 and the bottom of the long branch 24 and a second portion of tube 27 arranged in the extension of the first tube portion 26 forming the top of the long branch 24.
- These portions of tube 26, 27 have dimensions allowing them to fit one into the other by sliding in a nesting zone 28 variable so that the second portion of tube 27 is movable in substantially vertical translation by relative to the first tube portion 26.
- the first and second tube portions 26, 27 thus form the means for varying the length of the pumping tube 19.
- the nesting zone 28 may comprise sealing means 29, for example sliding joints or any other equivalent means, preventing any liquid or body solid penetrate into the pumping tube 19 by this nesting zone 28 and in particular during the relative movements of the second tube portion 27 relative to at the first 26.
- the free end 22 of the pumping tube 19 comprises flotation means 30, for example a float, allowing it to float on the surface of the water table, the pumping tube 19 lengthening or shortening according to the height of the means 30.
- the length variation means 25 and the flotation means 30 cooperate so that the orifice 21 is permanently above the level of the water table. In this way, hydrocarbons, or any other substance lighter than water and forming a layer on the surface of the water table, can freely penetrate through the orifice 21 in the pumping tube 19.
- the free end 22 of the pumping tube 19 may comprise a filter (not shown) covering the orifice 21 and preventing the entry of any type of agglomerates into the tube of 19.
- This filter can for example have a half-spherical shape whose part curved is upwards and perforated with orifices whose dimension is adjusted to allow the passage of hydrocarbons and prevent the passage of dirt or agglomerates that can disrupt the proper functioning of the drainage device 20a.
- this drain 1a is similar to the previous one.
- Room 3a is set the atmospheric pressure.
- the pressure of the hydrocarbon column forming in the pumping tube 19 opens the valve 4a allowing the hydrocarbons to penetrate into the room 3a by simple gravity.
- the passage of hydrocarbons in front of the contact Ba opens the circuit of the solenoid valve (not shown in this figure).
- the Ca contact opens the solenoid valve of such so as to inject compressed air through the pipe 6a. Room 3a is then in overpressure with respect to the pumping tube 19 and the valve 4a closes.
- the compressed air drives the hydrocarbons out of the chamber 3a through the pipe 7a resulting in the emptying of said chamber 3a, until these hydrocarbons return to the contact Ba, thus inducing the closure of the solenoid valve and the delivery of the chamber 3a at atmospheric pressure.
- the drain described in this variant embodiment allows generally pump all liquids lighter than water.
- the drain 1b has several superimposed rooms and for example two: a room upper 3c superimposed on a lower chamber 3b. Rooms 3b and 3c may to be or not dissociated from the drain 1b.
- the lower chambers 3b and upper 3c are dissociated from the drain 1b and are carried by a support (no shown), the drain 1b having a stripped portion on all or part of its height.
- the wall of the drain 1b is full and not streaked on the height of each chamber 3b, 3c and has an intermediate region (not shown) strained located between rooms 3b and 3c and a complementary zone (not shown) strainer under the lower chamber 3b to let the liquid in said bedrooms 3b and 3c.
- the lower 3b and upper 3c chambers are separated by a partition intermediate 18 disposed between the upper partition 16b of the lower chamber 3b and the lower partition 17c of the upper chamber 3c.
- This intermediate partition 18 has orifices allowing the passage of the liquid present in the drain 1b or in the soil, towards the inside of the upper chamber 3c via the valve 4c.
- a complementary partition 18 'also having orifices passing through the liquid can also be arranged under the lower chamber 3b.
- the orifices partitions 18 and 18 'complementary are provided to serve as a filter and do not pass only the liquid and the fine particles. Agglomerates for example earth can not enter the lower 3b and upper 3c chambers and do not can thus disrupt the operation of the drainage device 1b.
- the upper partitions 16b, 16c of the chambers 3b and 3c each comprise two passages for receiving at least one level detector 5b, 5c and a pipe 6b, 6c compressed air supply.
- the lower partitions 17b, 17c each comprise at less a valve 4b, 4c and a passage for receiving a discharge pipe 7b, 7c of liquid of rooms 3b and 3c.
- the passages made in the lower partitions 17b, 17c and higher 16b, 16c open laterally so as not to hinder the superposition of rooms 3b and 3c.
- the level 5b, 5c detectors of the liquid to be evacuated are similar to that of the drains 1, la and respectively define the contacts Ab, Bb, Cb and Ac, Bc, Cc intended to detect the liquid level in the lower chambers 3b and higher 3c respectively slightly above the arrival of the exhaust pipes 7b, 7c of liquid and at the pipes 6b, 6c of compressed air supply.
- each of the chambers 3b and 3c is identical to that of the rooms 3, 3a.
- This variant embodiment makes it possible to advantageously combine several chambers 3a, 3b in order to obtain a maximum flow rate of the drain 1b proportional to the number of rooms while not soliciting each of the rooms individually only when each of them must be emptied.
- the number of these rooms can of course be greater than two.
- the electropneumatic drainage device 20, 20a, 20b according to the invention makes it possible to pump liquids at great depth, by acting on the pressure of the compressed air, virtually zero flow rates up to, for example, multiple flow rates of 1.5 m 3 / h according to the number of superimposed chambers, while requiring only drilling of small diameters, which is particularly advantageous for drilling of great depth.
- the injection of compressed air is done only when the or rooms 3, 3a, 3b, 3c are full and must be emptied to evacuate liquid present in the drain 1, 1a, 1b.
- the drain 1, 1a, 1b on the height of the backflow, is empty, it can remain empty, without the need for compressed air.
- This allows a great economy of compressed air.
- it is possible to optimize consumption of compressed air by precisely determining the need for compressed air just needed depending on the volume of liquid to be evacuated.
- each drain having its own solenoid valve control and its own solenoid valve, the solenoid valve being energized by a single supply of compressed air fed by a compressor.
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- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Description
- la figure 1 représente schématiquement une coupe du dispositif selon l'invention mis en place au sein d'un puits de forage,
- la figure 2 représente une coupe d'une première variante de réalisation du dispositif de la figure 1, et
- la figure 3 représente une coupe d'une deuxième variante de réalisation du dispositif de la figure 1.
Claims (11)
- Dispositif (20, 20a, 20b) pour drainer un sol en profondeur au moyen d'au moins un drain (1, la, 1b), ledit drain (1, 1a, 1b) comprenant au moins une chambre (3, 3a, 3b, 3c) obturée en sa partie inférieure par une cloison inférieure (17, 17a, 17b, 17c) comportant au moins un clapet (4, 4a, 4b, 4c) agencé pour s'ouvrir lorsque la chambre (3, 3a, 3b, 3c) est en dépression et se fermer lorsque ladite chambre (3, 3a, 3b, 3c) est en surpression par rapport à l'extérieur, la chambre (3, 3a, 3b, 3c) comportant au moins un détecteur de niveau (5, 5a, 5b, 5c) du liquide à évacuer par ledit drain (1, la, 1b) au sein de ladite chambre (3, 3a, 3b, 3c), au moins un tuyau (6, 6a, 6b, 6c) d'arrivé d'air comprimé aboutissant dans la zone supérieure de ladite chambre (3, 3a, 3b, 3c), et au moins un tuyau d'évacuation (7, 7a, 7b, 7c) du liquide refoulé hors de ladite chambre (3, 3a, 3b, 3c) par l'air comprimé et aboutissant en zone inférieure de ladite chambre (3, 3a, 3b, 3c), en ce que ladite chambre (3, 3a, 3b, 3c) est obturée en sa partie supérieure par une cloison supérieure (16, 16a, 16b, 16c) disposée en profondeur dans ledit drain (1, 1a, 1b), ladite cloison supérieure (16, 16a, 16b, 16c) comportant au moins deux passages pour recevoir au moins ledit détecteur de niveau (5, Sa, 5b, 5c) et ledit tuyau (6, 6a, 6b, 6c) d'arrivée d'air comprimé, caractérisé en ce que ledit tuyau d'évacuation (7, 7a, 7b, 7c) du liquide comprend au moins un clapet anti-retour (8) du côté de son extrémité aboutissant dans ladite chambre (3, 3a, 3b, 3c), en ce que ledit tuyau (6, 6a, 6b, 6c) d'arrivée d'air comprimé est connecté à une réserve d'air comprimé (12) alimentée par un compresseur (13), en ce que ledit détecteur de niveau (5, 5a, 5b, 5c) est constitué par un câble électrique comportant trois conducteurs terminés chacun par un contact et aboutissant à des niveaux différents, respectivement un premier contact (A, Aa, Ab, Ac) au voisinage de la partie inférieure de ladite chambre (3, 3a, 3b, 3c) au-dessous dudit tuyau d'évacuation (7, 7a, 7b, 7c) du liquide, un deuxième contact (B, Ba, Bb, Bc) légèrement au-dessus dudit tuyau d'évacuation (7, 7a, 7b, 7c) du liquide puis un troisième contact (C, Ca, Cb, Cc) au voisinage de l'extrémité dudit tuyau (6, 6a, 6b, 6c) d'arrivée d'air comprimé.
- Dispositif selon la revendication 1, caractérisé en ce que ledit détecteur de niveau (5, Sa, 5b, 5c) est relié à une commande d'électrovanne (9) alimentée électriquement et elle-même reliée à une électrovanne (10) trois voies reliée à ladite réserve d'air comprimé (12) et agencée pour injecter de l'air comprimé lorsque le niveau de liquide dans ladite chambre (3, 3a, 3b, 3c) atteint ledit troisième contact (C, Ca, Cb, Cc) et pour arrêter l'injection d'air comprimé lorsque le niveau de liquide repasse au-dessous dudit deuxième contact (B, Ba, Bb, Bc).
- Dispositif selon la revendication 1, caractérisé en ce que ladite réserve d'air comprimé (12) est alimentée par un compresseur (13).
- Dispositif selon la revendication 1, caractérisé en ce que le tuyau d'évacuation (7, 7a, 7b, 7c) du liquide est dirigé dans une zone de dénivelée inférieure à son niveau de sortie dudit drain (1, 1a, 1b) pour constituer une cane de siphonnage.
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit drain (1a) comporte un tube de pompage (19) en forme de U extérieur à ladite chambre (3a) et comportant une branche courte (23) raccordée à ladite cloison inférieure (17a) en regard dudit clapet (4a) et une branche longue (24) orientée de manière que l'orifice (21) de son extrémité libre (22) se situe au moins au niveau le plus haut de ladite chambre (3a).
- Dispositif selon la revendication 5, caractérisé en ce que ledit tube de pompage (19) comporte des moyens de variation de longueur (25) et des moyens de flottaison (30) de ladite extrémité libre (22) à la surface du liquide présent dans ledit drain (1a), lesdits moyens de variation de longueur (25) et de flottaison (30) étant agencés pour coopérer de manière à maintenir ledit orifice (21) au-dessus de la surface dudit liquide présent dans ledit drain (1a).
- Dispositif selon la revendication 6, caractérisé en ce que ledit tube de pompage (19) est constitué d'au moins deux portions de tubes (26, 27) agencées pour s'emboíter au moins partiellement l'une dans l'autre dans une zone d'emboítement (28) et pour qu'au moins l'une desdites portions de tubes (26, 27) soit mobile en translation par rapport à l'autre (27, 26), lesdites portions de tubes (26, 27) emboítées et mobiles formant lesdits moyens de variation de longueur (25).
- Dispositif selon la revendication 7, caractérisé en ce que lesdites portions de tubes (26, 27) comportent des moyens d'étanchéité (29) agencés pour assurer l'étanchéité de ladite zone d'emboítement (28).
- Dispositif selon l'une quelconque des revendications 5 à 8, caractérisé en ce que ladite extrémité libre (22) comporte au moins un filtre couvrant ledit orifice (21), ledit filtre étant agencé pour ne permettre que l'entrée de liquide dans ledit tube de pompage (19).
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit drain (1b) comporte au moins deux chambres (3b, 3c) superposées, lesdites chambres (3b, 3c) étant séparées par au moins une cloison intermédiaire (18) agencée pour permettre le passage du liquide présent dans ledit drain (1b) dans au moins ladite chambre supérieure (3c), en ce que la cloison supérieure (16b, 16c) de chaque chambre comporte au moins deux passages pour recevoir au moins un détecteur de niveau (5b, 5c) et un tuyau (6b, 6c) d'arrivée d'air comprimé, et en ce que la cloison inférieure (17b, 17c) de chaque chambre comporte au moins un passage pour recevoir un tuyau d'évacuation (7b, 7c) du liquide.
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend une série de drains (1, la, 1b), chaque drain (1, 1a, 1b) ayant sa propre commande d'électrovanne (9) et sa propre électrovanne (10), l'ensemble des électrovannes (10) étant alimenté par une seule réserve d'air comprimé (12) alimentée par un compresseur (13).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0010832 | 2000-08-23 | ||
FR0010832A FR2813327B1 (fr) | 2000-08-23 | 2000-08-23 | Dispositif pour drainer un sol en profondeur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1182355A1 EP1182355A1 (fr) | 2002-02-27 |
EP1182355B1 true EP1182355B1 (fr) | 2003-10-22 |
Family
ID=8853672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01440281A Expired - Lifetime EP1182355B1 (fr) | 2000-08-23 | 2001-08-21 | Dispositif pour drainer un sol en profondeur |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1182355B1 (fr) |
AT (1) | ATE252689T1 (fr) |
DE (1) | DE60101030T2 (fr) |
FR (1) | FR2813327B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105201000A (zh) * | 2015-09-28 | 2015-12-30 | 中国十七冶集团有限公司 | 一种能远程监测的大面积基坑降水方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102828521B (zh) * | 2012-08-16 | 2014-09-10 | 中交第二航务工程局有限公司 | 一种预制承台水下止水方法 |
FR3033341B1 (fr) | 2015-03-05 | 2019-01-25 | Hydro Geotechnique | Dispositif pour drainer un sol en profondeur |
CN107504262A (zh) * | 2017-08-07 | 2017-12-22 | 上海公路桥梁(集团)有限公司 | 一种软土地层中越江顶管管道退管施工方法 |
CN114086581B (zh) * | 2021-05-07 | 2023-06-06 | 上海洋源建设发展有限公司 | 一种井点降水装置的操作方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1242516B (de) | 1956-07-11 | 1967-06-15 | Wilhelm Degen Dipl Ing | Unterdruckbrunnen |
FR2593203B1 (fr) * | 1986-01-20 | 1988-07-15 | Hydro Geo | Drainage profond par siphonnage de l'eau captee par les drains |
FR2615014A1 (fr) * | 1987-05-04 | 1988-11-10 | Couaud Maurice | Electronique et electromecanique appliquees aux chasses d'eau |
US5074758A (en) * | 1988-11-25 | 1991-12-24 | Mcintyre Glover C | Slurry pump |
US5301749A (en) * | 1992-09-16 | 1994-04-12 | Qed Environmental Systems, Inc. | Dual pump floating layer recovery apparatus |
FR2758162B1 (fr) * | 1997-01-06 | 1999-04-16 | Alain Duffau | Pompe hydropneumatique immergee pour le pompage ou le relevement en niveau de liquides |
US6048175A (en) * | 1997-09-24 | 2000-04-11 | Corlew; Edward A. | Multi-well computerized control of fluid pumping |
WO1999064742A1 (fr) * | 1998-06-11 | 1999-12-16 | Marvel John E | Pompe a liquides pour puits |
-
2000
- 2000-08-23 FR FR0010832A patent/FR2813327B1/fr not_active Expired - Fee Related
-
2001
- 2001-08-21 AT AT01440281T patent/ATE252689T1/de not_active IP Right Cessation
- 2001-08-21 EP EP01440281A patent/EP1182355B1/fr not_active Expired - Lifetime
- 2001-08-21 DE DE60101030T patent/DE60101030T2/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105201000A (zh) * | 2015-09-28 | 2015-12-30 | 中国十七冶集团有限公司 | 一种能远程监测的大面积基坑降水方法 |
Also Published As
Publication number | Publication date |
---|---|
DE60101030D1 (de) | 2003-11-27 |
EP1182355A1 (fr) | 2002-02-27 |
FR2813327B1 (fr) | 2003-04-11 |
FR2813327A1 (fr) | 2002-03-01 |
ATE252689T1 (de) | 2003-11-15 |
DE60101030T2 (de) | 2004-07-08 |
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