CN104975593A - Static sounding type deep soil samplers - Google Patents
Static sounding type deep soil samplers Download PDFInfo
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- CN104975593A CN104975593A CN201510423180.9A CN201510423180A CN104975593A CN 104975593 A CN104975593 A CN 104975593A CN 201510423180 A CN201510423180 A CN 201510423180A CN 104975593 A CN104975593 A CN 104975593A
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Abstract
The invention provides two static sounding type deep soil samplers. According to each static sounding type deep soil sampler, a main force bearing shaft is arranged inside a cylinder structure composed of a shell, a sampling tube and a tube shoe, the lower end of the main force bearing shaft is connected with a soil expanding cone head, a steel sheet and an electric ring are arranged between the main force bearing shaft and the shell, and the steel sheet and the elastic ring are clamped in an annular groove. According to the first static sounding type deep soil sampler, the annular groove is formed in the inner surface of the shell, an annular limiting groove is formed in the main force bearing shaft, and the main force bearing shaft is sleeved with an unlocking component composed of a thin-walled pipe and a control bar. According to the second static sounding type deep soil sampler, the annular groove is formed in the main force bearing shaft, an annular limiting groove is formed in the inner surface of the shell, and the main force bearing shaft is sleeved with a thin-walled pipe serving as an unlocking component. The two static sounding type deep soil samplers are used in combination with static sounding penetration equipment, a soil sample buried deep underground can be taken out rapidly under the condition that drilling is not needed; the static sounding type deep soil samplers have the advantages of being simple in structure, convenient and fast to use, capable of saving labor and low in cost; the disturbance of the water pressure on the soil sample can be reduced.
Description
Technical field
The invention belongs to soil sampler technical field, be specifically related to a kind of static sounding formula deep soil sampler of the desirable deep under ground soil sample be combined with static sounding injection equipment.
Background technology
The following discussion of background of the present invention is intended to be conducive to understanding the present invention.But should be appreciated that, this discussion is not confirm or admit that any involved material is a part for that be disclosed, known or before the priority date of the application common practise.
Soil sampling is work requisite, regular in geotechnical investigation, provides the sample of laboratory test for quantitative assessment geotechnical engineering problems.Present soil sampler technology is comparatively ripe, of a great variety, is applicable to various types of soil body.Domestic existing soil sampler, except take sample in the investigation of ground surface works geological mapping and probing engineering except, mainly uses in the borehole.For the soil body of underground deep, suitable drilling tool and drilling method must be used to hole, take out drill bit after reaching sample position and transfer soil sampler again and sample.Drill sampling workload is comparatively large, and speed is slow, and cost is higher, generally accounts for more than 30% of whole survey fee.
Static sounding technology refers to and utilizes pressure mechanism to be evenly pressed in soil by the taper shape probe with certain specification, by measuring the parameter such as Cone resistance, side friction power of each soil layer, to determine a kind of home position testing method of some basic physical mechanics properties of the soil body.This technology is applicable to weak soil, general clay, silt, sand and the soil containing a small amount of rubble, so far the history of existing more than 80 year, and particularly static sounding technology develops rapidly to multi-functional, multi-field direction in recent years.Except Cone resistance, side friction force parameter, pore water pressure, temperature, seismic wave, even density parameter all can obtain.From the eighties in 20th century, occurring abroad can the Multi-functional probe of soil sampling, existing large development so far.And domestic this respect starting rather late, current domestic widely used single Double lumen intubation and hole pressure touching methods do not possess the function of sampling.State Intellectual Property Office in 2012 announce a kind of can the environmental pore-pressure static sounding of soil sampling, the patent No. is 201110413998.4, more novel, but technology is immature, shortcoming is obvious, practicality is strong, shows: 1. the function of soil sampling is obviously oriented to the additional function of probe, strictly says not to be Special soil sampler; 2. the horizontal space that takies of self-locking mechanism is obviously excessive, utilizes steel ball the gravity operates the lock to there is open defect; 3. lack Seal Design, can not exclusively launching stress to the adverse effect of the activity of fetching earth; 4., from industry practice and know-why, static sounding probe is not suitable for data acquisition function fully integrated on same structural device with sampled functions because the realization of its function and asynchronous or coordinate.The injection system of static sounding is made up of feeler inspection main frame and counterforce device two parts, and feeler inspection main frame is different by its kind of drive, can be divided into mechanical type and fluid pressure type.Counterforce device has deadweight type and ground anchor type.The maximum penetrating power that feeler inspection main frame during engineering generally uses provides is generally in 30KN to 200KN scope, in recent years the available maximum penetrating power of novel feeler inspection car that domestic units concerned successfully research and develop through tackling of key scientific and technical problems reaches 350KN, not only can the general soil layer of injection, can also injection in gravelly soil, ovum (gravel) stone soil layer.The feeler inspection degree of depth is by the impact of the factors such as appointed condition, geological conditions, depth of exploration requirement, general within 35m in application, and the maximum experiment degree of depth of external visible report has reached more than 80 meter.
Tradition sampler and using method thereof have the shortcomings such as equipment complexity, workload is large, speed is slow, cost is high, ambient influnence is larger, and static sounding has the advantage that equipment is simple, workload is little, speed is fast, price is low, but can not sample.By transforming traditional sampler structure, making it to be combined with static sounding injection system, replacing rig pore-forming with the downward injection of static sounding press device, beyond doubt one of soil sampler and sampling method new evolutionary path.
Summary of the invention
In order to overcome in domestic prior art static cone penetration equipment can not soil sampling and drill sampling costly, the shortcoming such as speed is slow, complex process, ambient influnence are large, the invention provides and be a kind ofly combined the soil sampler that the soil sample being imbedded in underground deep (0-80m) can be taken out fast when not holing with static sounding injection equipment, structure is simple, easy to use, fast power-saving, cost are low feature that it has.
The object of the invention is to get rid of the adverse effect of underground water to soil sampler working effect as far as possible, greatly reduce hydraulic pressure to the disturbance of soil sample, increase the quality of success rate and the soil sample fetched earth.
The present invention also aims to provide a kind of reliability for soil sampler and durability is higher, take up room less self-locking manner.
For achieving the above object, the invention provides two kinds of technical schemes, two schemes belongs to same general plotting, their operating principle, most of essential features, technique effect are all identical, the specified features having all multipair prior aries to contribute is consistent, both difference parts are only embodied in the correlation change in form of a small amount of structure, there is no essential distinction.
The first technical scheme is: a kind of static sounding formula deep soil sampler, comprises shell (6), sampling tube (8), primary load bearing axle (4), shoe (11), expands native conehead (10), elastic ring (9), steel disc (5), unlocking feature; Shell (6) is thick cyclinder shape, and its inner surface is provided with annular groove (13), and its lower end is fixedly connected with sampling tube (8), and sampling tube (8) lower end is fixedly connected with shoe (11); Sampling tube (8) to narrow pipe, for filling soil sample for thin cylinder or for thin-walled; Shoe (11) one end with cutting edge, for cutting soil; Primary load bearing axle (4) Lower Half is provided with annular spacing groove (12), and its surface activity cover has unlocking feature; Described unlocking feature comprises light-wall pipe (7) and is connected to the control lever (7.1) on light-wall pipe (7), and the internal diameter of light-wall pipe (7) is greater than the external diameter of primary load bearing axle (4), and the external diameter of light-wall pipe (7) is less than the internal diameter of shell (6); Primary load bearing axle (4) lower end arrange expand native conehead (10), the lower end expanding native conehead (10) conically, for earth-squeezing hole-enlarging; Primary load bearing axle (4) and the native conehead of expansion (10) are positioned at the inside of the tubular construction that described shell (6), sampling tube (8) and shoe (11) form, and can move along the direction, axis of tubular construction; The lower end of steel disc (5) is fixedly connected with elastic ring (9) in annular array mode, and be positioned in shell (6) inner surface annular groove (13), when elastic ring (9) is nervous, the free end (i.e. upper end) of steel disc (5) has the trend that nature inwardly closes up, therefore steel disc (5) independently can embed annular spacing groove (12), plays the locking effect stoping primary load bearing axle (4) to move down separately.
Preferably, control lever (7.1) is in shaft-like, and lower end is fixedly connected with light-wall pipe (7); Skid when contacting for avoiding hand, projection is reserved in control lever (7.1) upper end; Primary load bearing axle (4) surface arranges strip groove (14) along its length, and control lever (7.1) is positioned at strip groove (14), and the length of strip groove (14) meets the length needed for unlocking operation; Primary load bearing axle (4) top and adapter (1) screwed connection stationary annular steel ear (2), bottom with expand native conehead (10) screwed connection; The tapered mesa-shaped in the native conehead of described expansion (10) upper end is also provided with waterproof bed course (3) on inclined-plane.
Preferably, annular steel ear (2) bottom surface is circular slanting plane, and this tapered plane is provided with waterproof bed course (3); The height of the annular groove (13) of shell (6) is greater than the length of steel disc (5); The interface internal of shell (6) top and bottom is set to inclined plane, can fit with the inclined-plane of annular steel ear (2) in the inclined plane of shell (6) upper end, can fit with the inclined-plane expanding native conehead (10) upper end in the inclined plane of shell (6) lower end.
Preferably, sampling tube (8) and shell (6), shoe (11) all adopt screwed connection, and interface thickeies; Shoe (11) surrounding is provided with at least two protruding bodies, and the basil is less than 0.36.
Operating procedure totally 7 steps of technique scheme, the course of work and the role of each step are briefly described below.
1. static sounding formula deep soil sampler is connected feeler lever by the adapter (1) on it, feeler lever is arranged on static sounding vehicle.
2. expose and expand native conehead (10), make annular steel ear (2) press shell (6), utilize static sounding vehicle by the injection of static sounding formula deep soil sampler to the degree of depth of specifying, then stop injection.Expand native conehead (10) in this process and will play the expansion soil effect of similar static sounding probe.
3. propose withdrawal by feeler lever, displacement is proposed in control, make the position of the annular spacing groove (12) on primary load bearing axle (4) a little more than steel disc (5), because steel disc (5) has the trend of contraction under the effect of elastic ring (9), steel disc (5) upper end will embed in annular spacing groove (12), thus make primary load bearing axle (4) and expand native conehead (10) can not injection separately, this is lock-out state.
4. continue downward injection soil sampler, the axle power that feeler lever descends will pass to shell (6) and sampling tube (8) by steel disc (5), make it to move downward, soil sample enters in sampling tube (8) by shoe (11) cutting, meanwhile, the water in sampling tube will be got rid of from the space between primary load bearing axle (4) and shell (6).Injection is stopped after obtaining soil sample.
5. promote feeler lever, soil sampler is fetched ground, in the process, the waterproof bed course (3) expanded on native conehead (10) is fitted with shell (6) inclined-plane, lower end, form sealing, make sampling tube (8) internal pressure consistent with the pressure of space below soil sampler, soil sample difficult drop-off.
6. unload sampling tube (8), take out soil sample sealing and preserve, cleaning equipment.Unlocked by unlocking feature, in this process, upward sliding control lever (7.1), control lever (7.1) drive light-wall pipe (7) moves and makes steel disc (5) expand disengaging annular spacing groove (12).
7., after sampling terminates, the sampling that said process carries out another degree of depth can be repeated.
The second technical scheme: a kind of static sounding formula deep soil sampler, comprises shell (6), sampling tube (8), primary load bearing axle (4), shoe (11), expands native conehead (10), elastic ring (9), steel disc (5), unlocking feature; Shell (6) is thick cyclinder shape, and its inner surface is provided with annular spacing groove (12), and its lower end is fixedly connected with sampling tube (8), and sampling tube (8) lower end is fixedly connected with shoe (11); Sampling tube (8) to narrow pipe, for filling soil sample for thin cylinder or for thin-walled; Shoe (11) one end with cutting edge, for cutting soil; Primary load bearing axle (4) Lower Half is provided with annular groove (13), and the surface activity cover of primary load bearing axle (4) has unlocking feature; Described unlocking feature comprises light-wall pipe (7); the internal diameter of light-wall pipe (7) is greater than the external diameter of primary load bearing axle (4); and the external diameter of light-wall pipe (7) is less than the internal diameter of shell (6); light-wall pipe (7) can pass through the semifixed modes such as extruding, screw thread, projection or buckle and temporarily be locked on the primary load bearing axle (4) of the upside of annular groove (13), makes it can not landing automatically under gravity; Primary load bearing axle (4) lower end is arranged expands native conehead (10), expands the lower end of native conehead (10) conically; Primary load bearing axle (4) and the native conehead of expansion (10) are positioned at the inside of the tubular construction that described shell (6), sampling tube (8) and shoe (11) form, and can move along the direction, axis of tubular construction; The upper end of steel disc (5) is fixedly connected with elastic ring (9) in annular array mode, and is positioned in the annular groove (13) on primary load bearing axle (4); When elastic ring (9) is nervous, the free end (i.e. lower end) of steel disc (5) has the trend that nature expands outwardly, and therefore steel disc (5) independently can embed annular spacing groove (12), plays the locking effect that prevention primary load bearing axle (4) moves down separately.
Preferably, primary load bearing axle (4) top and adapter (1) screwed connection stationary annular steel ear (2), bottom with expand native conehead (10) screwed connection; The tapered mesa-shaped in the native conehead of described expansion (10) upper end is also provided with the waterproof bed course (3) be made up of impervious material on inclined-plane.
Preferably, annular steel ear (2) bottom surface is circular slanting plane, and this tapered plane is provided with the waterproof bed course (3) be made up of impervious material; The height of described annular groove (13) is greater than the length of steel disc (5); The interface internal of shell (6) top and bottom is set to inclined plane, can fit with the inclined-plane of annular steel ear (2) in the inclined plane of shell (6) upper end, can fit with the inclined-plane expanding native conehead (10) upper end in the inclined plane of shell (6) lower end.
Preferably, sampling tube (8) and shell (6), shoe (11) all adopt screwed connection, and interface thickeies; Shoe (11) surrounding is provided with at least two protruding bodies, and the basil is less than 0.36.
Operating procedure totally 7 steps of technique scheme, the course of work and the role of each step are briefly described below.
1. static sounding formula deep soil sampler is connected feeler lever by the adapter (1) on it, feeler lever is arranged on static sounding vehicle.
2. expose and expand native conehead (10), make annular steel ear (2) press shell (6), utilize static sounding vehicle by the injection of static sounding formula deep soil sampler to the degree of depth of specifying, then stop injection.Expand native conehead (10) in this process and will play the expansion soil effect of similar static sounding probe.
3. propose withdrawal by feeler lever, displacement is proposed in control, make the position of the steel disc (5) be positioned in the upper annular groove (13) of primary load bearing axle (4) a little more than the annular spacing groove (12) in shell (6), because steel disc (5) has the trend of expansion under the effect of elastic ring (9), steel disc (5) lower end will embed in annular spacing groove (12), thus make primary load bearing axle (4) and expand native conehead (10) can not injection separately, this is lock-out state.
4. continue downward injection soil sampler, the axle power that feeler lever descends will pass to shell (6) and sampling tube (8) by steel disc (5), make it to move downward, soil sample enters in sampling tube (8) by shoe (11) cutting, meanwhile, the water in sampling tube will be got rid of from the space between primary load bearing axle (4) and shell (6).Injection is stopped after obtaining soil sample.
5. promote feeler lever, soil sampler is fetched ground, in the process, the waterproof bed course (3) expanded on native conehead (10) is fitted with shell (6) inclined-plane, lower end, form sealing, make sampling tube (8) internal pressure consistent with the pressure of space below soil sampler, soil sample difficult drop-off.
6. unload sampling tube (8), take out soil sample sealing and preserve, cleaning equipment.Unlocked by unlocking feature, in this process, slide downward light-wall pipe (7), makes steel disc (5) close up and departs from annular spacing groove (12).
7., after sampling terminates, the sampling that said process carries out another degree of depth can be repeated.
The word (as upper end, lower end, upside etc.) of band directionality mentioned in this article is all with reference to normal operating conditions of the present invention.
Beneficial effect of the present invention mainly contain following some.
1. traditional soil sampler and must be drilled and is combined and the soil body of underground deep could be taken out, and static sounding formula deep soil sampler carries the native conehead of expansion, the perforation device of cone penetration test can be utilized in the soil layer of the arbitrary designated depth within the depth capacity of direct for whole soil sampler injection underground, eliminate the probing link in traditional soil sampling technique, decrease workload, save the various costs needed for probing.Certainly, limited and the feeler lever of the penetrating power provided because of injection machine and sampling tube diameter less, therefore the more traditional sampling mode of its scope of application is smaller, under prior art condition, this apparatus and method for is only applicable to the soil layers such as the weak soil of the degree of depth between 0 to 80m, soft plastic clay, silt, Extra-fine sand, believe the progress along with relevant device technology, its scope of application must expand further.
2. cost is lower, lighter compared with traditional coring bit, workload is less, time saving and energy saving.
3., in prior art, what only the patent No. 201110413998.4 was announced a kind ofly the environmental pore-pressure static sounding of soil sampling and the present invention can have certain similitude.By comparison, the present invention has 3 advantages: one, adopt more advanced self-locking mechanism, the latter adopts ball catch, the annular groove that working method due to ball catch determines connecting rod stopper slot and hollow cylinder probe tube top must have the larger degree of depth, to ensure the activity of ball catch, the minimum diameter of the connecting rod of probe diameter increase or transmission of pressure will inevitably be caused like this to reduce.Probe diameter increases the resistance greatly increasing injection unintentionally, and the minimum diameter of connecting rod reduces will significantly reduce the maximum penetrating power of popping one's head in, and these two aspects is all unfavorable for the depth of penetration of popping one's head in.The self-locking mechanism that the static sounding formula deep soil sampler that the present invention announces adopts elastic ring and steel disc to form, this new self-locking mechanism is less to taking compared with the former of horizontal space, reduce the degree of depth of the annular groove of shell and primary load bearing axle, thus be conducive to increasing the minimum diameter of primary load bearing axle or reducing the maximum outside diameter of soil sampler.Two, waterproof bed course is possessed, hydraulic pressure can be isolated, make the present invention when downward injection, waterproof bed course on steel ring and shell are fitted, effectively can reduce silt and pour in the possibility that obstruction is caused in its inside, waterproof bed course on native conehead is expanded and shell is fitted in the process that it is upwards extracted, the contact of soil sample in water and sampling tube in hole can be intercepted, the not landing of effective guarantee soil sample, the work success rate that fetches earth is higher, soil sample disturbance is also less, and the latter is without waterproof bed course, and obstruction, soil sample landing and soil sample disturbance odds are larger.Three, total is all around facilitating sampling to be optimized, professional stronger, be conducive to improving quality of soil sample, and the equipment of the patent No. 201110413998.4 is using static sounding (comprise survey penetration resistance, survey pore water pressure) as major function, sampling is one in its numerous auxiliary function (as: testing temperature, survey velocity of wave, survey density, deviational survey, sampling).Except sampling, all the other functions all realize by special Multifunctional perforated pressure static penetrometer, need not all be incorporated on an equipment, moreover redundancy function is not only helpless to the raising of sampling quality, also there is the problem that function interferes with each other, such as in order to get the soil sample of different depth, when injection is to the corresponding degree of depth, the collection comprising the data such as penetration resistance, hole pressure, velocity of wave must be stopped, after completing sampling, injection just can restart the collection of data to this degree of depth, carries brill and interrupt data acquisition causing various hidden danger.Soil sample is more, and the number of times of injection is repeatedly more, larger to the loss of cable.The present invention eliminates various sensor, has broken away from the puzzlement of cable, more convenient operation, although lacked some functions, if the present invention be combined with other Multi-functional probes, complementary length, then effect will be better.
4. apply the present invention can easily static sounding in-situ test and sampleman be combined, that compares that both traditional approach combine is tightr.The two data obtained corroborates each other and supplements, and contributes to the confidence level and the convincingness that improve the explanation of static sounding data from in-situ, is more conducive to the popularization of soil in-situ measuring technology.Although the plan-position of doing in-situ test cannot realize overlap completely (namely not only doing in-situ test but also sample in same hole) with the plan-position of sampling work, but both distances can control within the scope of 0.2m-1.0m, in most cases within the scope of this, the change of stratum characteristic is very little, can ignore, so can be similar to two work regarded as and carry out in same hole, the combination of data possesses feasibility.
It must be noted that, use the present invention to carry out sampling activity, main purpose should be following some: first, it is the data that the penetrated in-situ test instrument of representative gathers with static penetrometer that assistant analysis is explained, improves its degree of accuracy and efficiency; Secondly, field observation and qualitative description is convenient to; Finally, indoor test can be carried out to simple projects of minority such as grain composition, density, water content, plastic state, intensity parameters, obtain soil layer engineering properties.As in-situ test can not substitute laboratory test completely, the present invention can not substitute the sampling of traditional approach completely, just as to a certain extent substitute or supplementary.At present, the thinking of this soil sampling involved by this technology, except the invention that the patent No. is 201110413998.4 slightly embodies, there is no the appearance of correlation technique.
Accompanying drawing explanation
Fig. 1 is the component arrangement elevation of the first static sounding formula deep soil sampler
Fig. 2 is the A-A ' sectional view of Fig. 1
Fig. 3 is the B-B ' sectional view of Fig. 1 and Fig. 7
Fig. 4 is the elevation of the first static sounding formula deep soil sampler under another kind of duty
Fig. 5 is the C-C ' sectional view of Fig. 4
Fig. 6 is the combination stereogram of elastic ring and steel disc
Fig. 7 is the component arrangement elevation of the second static sounding formula deep soil sampler
In figure, 1. adapter 2. annular steel ear 3. waterproof bed course 4. primary load bearing axle 5. steel disc 6. shell 7. light-wall pipe 7.1 control lever 8. sampling tube 9. elastic ring 10. expands native conehead 11. shoe 12. annular spacing groove 13. annular groove 14. strip groove
Detailed description of the invention
Hereinafter with reference to accompanying drawing to a preferred embodiment of the present invention will be described in detail, to understand two kinds of of the present invention provided technology further.
The first scheme, a kind of static sounding formula deep soil sampler, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, comprise shell (6), sampling tube (8), expand native conehead (10), the parts such as primary load bearing axle (4), elastic ring (9), steel disc (5), unlocking feature, shell (6) inner surface is provided with annular groove (13), and primary load bearing axle (4) is provided with annular spacing groove (12).The feature of the annular groove (13) of shell (6) inner surface is highly approximately 10 times of the degree of depth, and the degree of depth is greater than the thickness sum of elastic ring (9) and steel disc (5), for placing elastic ring (9) and steel disc (5).The lower wall of annular groove (13) is preferably slightly towards tilted or do concavity cambered surface, to ensure that elastic ring (9) and steel disc (5) do not depart from annular groove (13) under the effect of the pressure.The feature of the annular spacing groove (12) on primary load bearing axle (4) is that it is formed by cambered surface and incline configuration, the string of cambered surface is vertical or approximately perpendicular to the length direction of primary load bearing axle (4), and annular spacing groove (12) is greater than the height of light-wall pipe (7) to the distance of primary load bearing axle (4) lower end.Steel disc (5) is preferably set as arc, and its radian is consistent with the radian of elastic ring (9), and its material both can be steel, also can be other sturdy material.The annulus that elastic ring (9) is circular cross-section, makes with elasticity steel.The lower end of steel disc (5) is fixedly connected with elastic ring (9) in annular array mode, and be positioned in shell (6) inner surface annular groove (13), when elastic ring (9) is nervous, the free end (i.e. upper end) of steel disc (5) has the trend that nature inwardly closes up, therefore steel disc (5) independently can embed annular spacing groove (12), plays the locking effect stoping primary load bearing axle (4) to move down separately.Unlocking feature comprises light-wall pipe (7) and control lever (7.1) two parts.The internal diameter of light-wall pipe (7) is greater than the external diameter of primary load bearing axle (4), and the external diameter of light-wall pipe (7) is less than the internal diameter of shell (6); light-wall pipe (7) is enclosed within primary load bearing axle (4); and be fixedly connected with control lever (7.1), make it to slide up and down along primary load bearing axle (4) under the drive of control lever (7.1).Primary load bearing axle (4) surface arranges strip groove (14) along its length, control lever (7.1) is positioned at strip groove (14), the length of strip groove (14) and control lever (7.1) should make the position of its upper end after soil sampler self-locking higher than shell (6), facilitates technician's hand-operated control lever (7.1).Skid when contacting for avoiding hand, projection is reserved in control lever (7.1) upper end.Primary load bearing axle (4) top and adapter (1) are by screwed connection and arrange annular steel ear (2), bottom with expand native conehead (10) and pass through screwed connection.Expand the tapered mesa-shaped in native conehead (10) upper end and on inclined-plane, be provided with waterproof bed course (3), lower end conically.Annular steel ear (2) bottom surface is annular slope, inclined-plane is pasted fixing waterproof bed course (3).Sampling tube (8) is connected with shell (6), shoe (11) respectively by screw thread, and sampling tube (8) two ends interface thickeies.The annular groove height of shell (6) is greater than the length of steel disc (5), and the interface internal of shell (6) top and bottom is set to inclined-plane, can fit with annular steel ear (2) and the inclined-plane that expands native conehead (10) respectively.Under non-self-locking state during downward injection soil sampler, frictional resistance suffered by the external surface of shoe (11), sampling tube (8) and shell (6) passes to primary load bearing axle (4) by the firm ear (2) of annular.After self-locking, by the steel disc (5) of annular arrangement, frictional resistance is passed to primary load bearing axle (4).Shoe (11) surrounding is provided with at least two protruding bodies, and formed aquaporin to reduce hydrodynamic resistance for paddle-tumble on the hole wall of feeler inspection hole, the basil is less than 0.36, and the internal diameter of shoe (11) is slightly less than the internal diameter of sampling tube (8), to reduce the disturbance to soil sample.Waterproof bed course (3) can be made with impervious materials such as rubber, in thin layer ring-type.
Certainly, the present invention is not limited to above-described embodiment, and such as light-wall pipe (7) might not make tubulose, also can be designed to the ring-type that section is wedge shape.Such as shell (6) can also adopt pin with the connected mode of sampling tube (8) again.With above-mentioned desirable embodiment for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.Its technical scope must be determined according to right.
Application concrete grammar step of the present invention and relevant work principle is set forth for above-described embodiment.
1. static sounding formula deep soil sampler is connected feeler lever by the adapter (1) on it, feeler lever is arranged on static sounding vehicle.
2. expose and expand native conehead (10), make annular steel ear (2) press shell (6), utilize static sounding vehicle by the injection of static sounding formula deep soil sampler to the degree of depth of specifying, then stop injection.Expand native conehead (10) in this process and will play the expansion soil effect of similar static sounding probe, because annular steel ear (2) inclined-plane seals with waterproof bed course (3), underground water does not just upwards flow by sampling tube (8) and shell (6), the flute mark that can only be marked at sidewall by shoe (11) projection around is upwards flowed, thus effectively prevents silt from pouring in soil sampler the possibility causing obstruction.
3. propose withdrawal by feeler lever, displacement is proposed in control, make the position of the annular spacing groove (12) on primary load bearing axle (4) a little more than steel disc (5), because steel disc (5) has the trend of contraction under the effect of elastic ring (9), steel disc (5) upper end will embed in annular spacing groove (12), thus make primary load bearing axle (4) and expand native conehead (10) can not injection separately.
4. continue downward injection soil sampler, the axle power that feeler lever descends will pass to shell (6) and sampling tube (8) by steel disc (5), make it to move downward, soil sample enters in sampling tube (8) by shoe (11) cutting, meanwhile, the water in sampling tube will be got rid of from the space between primary load bearing axle (4) and shell (6).Injection is stopped after obtaining soil sample.
5. promote feeler lever, soil sampler is fetched ground, in the process, the waterproof bed course (3) expanded on native conehead (10) is fitted with shell (6) inclined-plane, lower end, form sealing, make sampling tube (8) internal pressure consistent with the pressure of space below soil sampler, soil sample difficult drop-off.
6. open shell (6) and the screw thread of sampling tube (8), take out soil sample sealing and preserve, cleaning equipment.Upward sliding control lever (7.1) unlocks.
7., after sampling terminates, the sampling that said process carries out another degree of depth can be repeated.Attention: in the process of second time injection downwards, fit in waterproof bed course (3) in annular steel ear (2) and shell (6) top, form sealing, water below soil sampler is not by soil sampler internal flow, but upwards flowed by the space between soil sampler and hole wall or hole wall cutting, greatly reduce the possibility of soil sampler internal blocking.
First scheme, a kind of static sounding formula deep soil sampler, as shown in Figure 3 and Figure 7, comprise shell (6), sampling tube (8), expand native conehead (10), the parts such as primary load bearing axle (4), elastic ring (9), steel disc (5), unlocking feature, shell (6) inner surface is provided with annular spacing groove (12), and primary load bearing axle (4) is provided with annular groove (13).The feature of annular groove (13) on primary load bearing axle (4) surface is highly approximately 10 times of the degree of depth, and the degree of depth is greater than the thickness sum of elastic ring (9) and steel disc (5), for placing elastic ring (9) and steel disc (5), the height of annular groove (13) is greater than the length of steel disc (5).The lower wall of annular groove (13) is preferably slightly towards tilted or do concavity cambered surface, to ensure that elastic ring (9) and steel disc (5) do not depart from annular groove (13) under the effect of the pressure.The feature of the annular spacing groove (12) on shell (6) is that it is formed by cambered surface and incline configuration, the string of cambered surface is vertical or approximately perpendicular to the length direction of primary load bearing axle (4), and annular spacing groove (12) is greater than the height of light-wall pipe (7) to the distance of primary load bearing axle (4) lower end.Steel disc (5) is preferably set as arc, and its radian is consistent with the radian of elastic ring (9), and its material both can be steel, also can be other sturdy material.The annulus that elastic ring (9) is circular cross-section, makes with elasticity steel.The upper end of steel disc (5) is fixedly connected with elastic ring (9) in annular array mode, and lock ring is in the annular groove (13) on primary load bearing axle (4) surface, when elastic ring (9) is nervous, the free end (i.e. lower end) of steel disc (5) has nature outwardly trend, therefore steel disc (5) independently can embed annular spacing groove (12), plays the locking effect stoping primary load bearing axle (4) opposite shell (6) to move down separately.Unlocking feature comprises light-wall pipe (7); the internal diameter of light-wall pipe (7) is greater than the external diameter of primary load bearing axle (4); and the external diameter of light-wall pipe (7) is less than the internal diameter of shell (6); light-wall pipe (7) is enclosed within primary load bearing axle (4); can slide up and down along primary load bearing axle (4); light-wall pipe (7) can pass through the semifixed modes such as extruding, screw thread, projection or buckle and temporarily be locked on the primary load bearing axle (4) of the upside of annular groove (13), makes it can not landing automatically under gravity.Primary load bearing axle (4) top and adapter (1) are by screwed connection and arrange annular steel ear (2), bottom with expand native conehead (10) and pass through screwed connection.Expand the tapered mesa-shaped in native conehead (10) upper end and on inclined-plane, be provided with waterproof bed course (3), lower end conically.Annular steel ear (2) bottom surface is annular slope, inclined-plane is pasted fixing waterproof bed course (3).Sampling tube (8) is connected with shell (6), shoe (11) respectively by screw thread, and sampling tube (8) two ends interface thickeies.The interface internal of shell (6) top and bottom is set to inclined-plane, can fit with annular steel ear (2) and the inclined-plane that expands native conehead (10) respectively.Under non-self-locking state during downward injection soil sampler, frictional resistance suffered by the external surface of shoe (11), sampling tube (8) and shell (6) passes to primary load bearing axle (4) by the firm ear (2) of annular.After self-locking, by the steel disc (5) of annular arrangement, frictional resistance is passed to primary load bearing axle (4).Shoe (11) surrounding is provided with at least two protruding bodies, and formed aquaporin to reduce hydrodynamic resistance for paddle-tumble on the hole wall of feeler inspection hole, the basil is less than 0.36, and the internal diameter of shoe (11) is slightly less than the internal diameter of sampling tube (8), to reduce the disturbance to soil sample.Waterproof bed course (3) can be made with impervious materials such as rubber, in thin layer ring-type.
Certainly, the present invention is not limited to above-described embodiment, and such as light-wall pipe (7) might not make tubulose, also can be designed to the ring-type that section is wedge shape.Such as shell (6) can also adopt pin with the connected mode of sampling tube (8) again.With above-mentioned desirable embodiment for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.Its technical scope must be determined according to right.
Application concrete grammar step of the present invention and relevant work principle is set forth for above-described embodiment.
1. static sounding formula deep soil sampler is connected feeler lever by the adapter (1) on it, feeler lever is arranged on static sounding vehicle.
2. light-wall pipe (7) is temporarily locked on the primary load bearing axle (4) of the upside of annular groove (13), then release and expand native conehead (10), annular steel ear (2) is made to press shell (6), utilize static sounding vehicle by the injection of static sounding formula deep soil sampler to the degree of depth of specifying, then stop injection.Expand native conehead (10) in this process and will play the expansion soil effect of similar static sounding probe, because annular steel ear (2) inclined-plane seals with waterproof bed course (3), underground water is not just by sampling tube (8) and shell (6) flows upward inside, the flute mark that can only be marked at sidewall by shoe (11) projection around is upwards flowed, thus effectively prevents silt from pouring in soil sampler the possibility causing obstruction.
3. propose withdrawal by feeler lever, displacement is proposed in control, make the position of the steel disc (5) of lock ring in the annular groove (13) on primary load bearing axle (4) a little more than annular spacing groove (12), free end (i.e. lower end) due to steel disc (5) has the trend of expansion under the effect of elastic ring (9), steel disc (5) lower end will embed in annular spacing groove (12), thus make primary load bearing axle (4) and expand native conehead (10) can not injection separately, realize locking.
4. continue downward injection soil sampler, the axle power that feeler lever descends will pass to shell (6) and sampling tube (8) by steel disc (5), make it to move downward, soil sample enters in sampling tube (8) by shoe (11) cutting, meanwhile, the water in sampling tube will be got rid of from the space between primary load bearing axle (4) and shell (6).Injection is stopped after obtaining soil sample.
5. promote feeler lever, soil sampler is fetched ground.In the process, the waterproof bed course (3) expanded on native conehead (10) is fitted with shell (6) inclined-plane, lower end, forms sealing, makes sampling tube (8) internal pressure consistent with the pressure of space below soil sampler, soil sample difficult drop-off.
6. open shell (6) and the screw thread of sampling tube (8), take out soil sample sealing and preserve, cleaning equipment.Unlocked by unlocking feature, in this process, slide downward light-wall pipe (7), makes steel disc (5) close up and departs from annular spacing groove (12).
7., after sampling terminates, the sampling that said process carries out another degree of depth can be repeated.Attention: in the process of second time injection downwards, fit in waterproof bed course (3) in annular steel ear (2) and shell (6) top, form sealing, water below soil sampler is not by soil sampler internal flow, but upwards flowed by the space between soil sampler and hole wall or hole wall cutting, greatly reduce the possibility of soil sampler internal blocking.
Claims (8)
1. a static sounding formula deep soil sampler, comprises shell (6), sampling tube (8), primary load bearing axle (4), shoe (11), it is characterized in that: also comprise and expand native conehead (10), elastic ring (9), steel disc (5), unlocking feature; Shell (6) is cylindric, and its inner surface is provided with annular groove (13), and its lower end is fixedly connected with sampling tube (8), and sampling tube (8) lower end is fixedly connected with shoe (11); Primary load bearing axle (4) Lower Half is provided with annular spacing groove (12), and its surface activity cover has unlocking feature; Described unlocking feature comprises light-wall pipe (7) and is connected to the control lever (7.1) on light-wall pipe (7), and the internal diameter of light-wall pipe (7) is greater than the external diameter of primary load bearing axle (4), and the external diameter of light-wall pipe (7) is less than the internal diameter of shell (6); Primary load bearing axle (4) lower end is arranged expands native conehead (10), expands the lower end of native conehead (10) conically; Steel disc (5) is fixedly connected with elastic ring (9) in annular array mode, and is positioned in shell (6) inner surface annular groove (13); Primary load bearing axle (4) and the native conehead of expansion (10) are positioned at the inside of the tubular construction that described shell (6), sampling tube (8) and shoe (11) form, and can move along the direction, axis of tubular construction.
2. static sounding formula deep soil sampler according to claim 1, it is characterized in that: described control lever (7.1) is in shaft-like, and projection is reserved in its upper end, lower end is fixedly connected with light-wall pipe (7); Primary load bearing axle (4) surface arranges strip groove (14) along its length, control lever (7.1) is positioned at strip groove (14), primary load bearing axle (4) top and adapter (1) screwed connection stationary annular steel ear (2), bottom with expand native conehead (10) screwed connection; The tapered mesa-shaped in the native conehead of described expansion (10) upper end is also provided with waterproof bed course (3) on inclined-plane.
3. static sounding formula deep soil sampler according to claim 2, is characterized in that: annular steel ear (2) bottom surface is circular slanting plane, and this tapered plane is provided with waterproof bed course (3); The height of the annular groove (13) of described shell (6) is greater than the length of steel disc (5); The interface internal of shell (6) top and bottom is set to inclined plane, can fit with the inclined-plane of annular steel ear (2) in the inclined plane of shell (6) upper end, can fit with the inclined-plane expanding native conehead (10) upper end in the inclined plane of shell (6) lower end.
4. static sounding formula deep soil sampler according to claim 1, is characterized in that: described shoe (11) surrounding is provided with at least two protruding bodies, and the basil is less than 0.36.
5. a static sounding formula deep soil sampler, comprises shell (6), sampling tube (8), primary load bearing axle (4), shoe (11), it is characterized in that: also comprise and expand native conehead (10), elastic ring (9), steel disc (5), unlocking feature; Shell (6) is cylindric, and its inner surface is provided with annular spacing groove (12), and its lower end is fixedly connected with sampling tube (8), and sampling tube (8) lower end is fixedly connected with shoe (11); Primary load bearing axle (4) Lower Half is provided with annular groove (13), and the surface cover of primary load bearing axle (4) has unlocking feature; Described unlocking feature comprises light-wall pipe (7), and the internal diameter of light-wall pipe (7) is greater than the external diameter of primary load bearing axle (4), and the external diameter of light-wall pipe (7) is less than the internal diameter of shell (6); Primary load bearing axle (4) lower end is arranged expands native conehead (10), expands the lower end of native conehead (10) conically; Steel disc (5) is fixedly connected with elastic ring (9) in annular array mode, and is positioned in the annular groove (13) on primary load bearing axle (4); Primary load bearing axle (4) and the native conehead of expansion (10) are positioned at the inside of the tubular construction that described shell (6), sampling tube (8) and shoe (11) form, and can move along the direction, axis of tubular construction.
6. static sounding formula deep soil sampler according to claim 5, is characterized in that: primary load bearing axle (4) top and adapter (1) screwed connection stationary annular steel ear (2), bottom with expand native conehead (10) screwed connection; The tapered mesa-shaped in the native conehead of described expansion (10) upper end is also provided with waterproof bed course (3) on inclined-plane.
7. static sounding formula deep soil sampler according to claim 6, is characterized in that: annular steel ear (2) bottom surface is circular slanting plane, and this tapered plane is provided with waterproof bed course (3); The height of described annular groove (13) is greater than the length of steel disc (5); The interface internal of shell (6) top and bottom is set to inclined plane, can fit with the inclined-plane of annular steel ear (2) in the inclined plane of shell (6) upper end, can fit with the inclined-plane expanding native conehead (10) upper end in the inclined plane of shell (6) lower end.
8. static sounding formula deep soil sampler according to claim 5, is characterized in that: described shoe (11) surrounding is provided with at least two protruding bodies, and the basil is less than 0.36.
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| CN105806515A (en) * | 2016-04-28 | 2016-07-27 | 中国矿业大学 | Segmented hole wall attaching type three-dimensional geostress measurement device |
| CN109629547A (en) * | 2019-01-11 | 2019-04-16 | 中国水利水电科学研究院 | A kind of great burying soil HYDRODYNAMIC CHARACTERISTICS parameter measurement system and method |
| CN110004904A (en) * | 2019-04-24 | 2019-07-12 | 天津大学 | A kind of soil sampler for static cone penetration equipment |
| CN111468207A (en) * | 2020-04-16 | 2020-07-31 | 河海大学 | Movable soil sample placement device for geotechnical engineering construction |
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| CN107607347B (en) * | 2017-09-26 | 2020-06-02 | 北京林业大学 | Soil profile geotome |
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| CN105806515A (en) * | 2016-04-28 | 2016-07-27 | 中国矿业大学 | Segmented hole wall attaching type three-dimensional geostress measurement device |
| CN105806515B (en) * | 2016-04-28 | 2018-05-04 | 中国矿业大学 | One kind divides valve to be close to hole wall formula three-dimension geosciences modeling device |
| CN109629547A (en) * | 2019-01-11 | 2019-04-16 | 中国水利水电科学研究院 | A kind of great burying soil HYDRODYNAMIC CHARACTERISTICS parameter measurement system and method |
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| CN110004904A (en) * | 2019-04-24 | 2019-07-12 | 天津大学 | A kind of soil sampler for static cone penetration equipment |
| CN111468207A (en) * | 2020-04-16 | 2020-07-31 | 河海大学 | Movable soil sample placement device for geotechnical engineering construction |
| CN113482562A (en) * | 2021-07-30 | 2021-10-08 | 长江岩土工程有限公司 | Covering layer core-taking touch probe test device and using method |
| CN113482562B (en) * | 2021-07-30 | 2022-12-02 | 长江岩土工程有限公司 | Covering layer core-taking touch probe test device and using method |
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