CN109374343A - A kind of water sampling probe and acquisition method in situ for shallow-layer gas-bearing formation - Google Patents
A kind of water sampling probe and acquisition method in situ for shallow-layer gas-bearing formation Download PDFInfo
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- CN109374343A CN109374343A CN201811446147.8A CN201811446147A CN109374343A CN 109374343 A CN109374343 A CN 109374343A CN 201811446147 A CN201811446147 A CN 201811446147A CN 109374343 A CN109374343 A CN 109374343A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
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Abstract
The invention discloses a kind of water sampling probes and acquisition method in situ for shallow-layer gas-bearing formation, and mainly by probe first part, probe second part and probe Part III, successively airtight connection is formed from bottom to up；Probe first part includes probe pipe A and cyclic annular permeable stone, the tube wall of probe pipe A is provided with water flowing hole, second part inside pop one's head in filled with sponge protective, double end injection needle is fixed with inside sponge protective, Part III top pop one's head in equipped with fixed belt hole baffle and movable snap-gauge, single port aluminium made vacuum bottle is installed in the lumen of probe pipe C, it is closed on the bottleneck in single port aluminium made vacuum bottom of bottle portion that the second silica gel plug is installed, pull rod is fixed at the top of movable snap-gauge, positioning groove is provided with around through-hole at the top of fixed belt hole baffle, bridging is installed on pull rod, rope is connected at the top of pull rod.The present invention has many advantages, such as that structure is simple, easy to carry, carries common static penetrometer, can obtain the water sample in situ in predetermined gas-bearing layer.
Description
Technical field
The present invention relates to the geotechnical engineering investigation fields in field of civil engineering, more particularly to one kind is for shallow-layer gassiness
The water sampling probe and acquisition method in situ of layer, can fit the gas-bearing formation of gas with various ingredient and different soil properties
With.
Background technique
Shallow gas refer to be embedded within earth's surface or less 1500m natural-gas (comprising it is organic and inorganic or be mixed into because
Gas), the stratum rich in shallow gas is known as gas-bearing formation.Gas-bearing formation is generally distributed in Marsh Wetland, river mouth, delta, lake
With in the shallow stratum of bottom sediment and oily resource relative abundance.Gas in soil layer is mainly derived from organic matter and exists
Produced by the biogenetic gas being decomposed to form under anaerobic bacteria effect and Deep Oil-gas, earth mantle gas and magmatic activity and pass through infiltration
The gas being closed in superficial stratum of being migrated upwards is passed through after leakage and diffusion.Along The East Coast of Zhejiang And Jiangsu Provinces of the shallow gas in China, the Changjiang river
Delta, the Caidamu Basin, Song-liao basin, Bohai gulf basin and the southern Yunnan osmanthus Qian Yue area Small-middle Basin in it is different
Degree preservation, wherein southeastern coast, In Middle And Lower Reaches of Changjiang River include the shallow gas in Soviet Union, Zhejiang, Shanghai, Fujian, Guangdong, fine jade, Hunan, Hubei Province, Jiangxi etc.
Being distributed mainly on coastal, riverine the 4th is in Plain.Gas-bearing formation is for civil engineering, with belonging to the special engineering of one kind
Matter disaster namely shallow gas geological disaster.The famous Construction of Hangzhou Bay Cross-sea Bridge in China during the engineering investigation of early period just once
Shallow gas eruption burning occurred causes ship to be spoken sarcastically the accident of wound.As underground space development is goed deep into China, increasingly
More engineerings has suffered from underground shallow layer gas, and shallow gas geological hazards are more prominent.When engineering meets with gassiness or containing nocuousness
When the stratum of gas, first have to need to find out the source of gas in stratum, major storage layer position, distribution etc., and gassiness
The acquisition of in situ water sample in layer, the production compression ring border of gassiness soil layer in engineering ground built for inverting produce the gas age and gas is transported
It is particularly significant to move accumulation process etc..Therefore, the acquisition quality of water sample sample in situ will directly influence the accuracy of test result,
And then the reasonability for influencing inverting is inferred.
Currently, the inspection of the scene of a crime in shallow gas geologic province, mostly natural dependent on static sounding in situ, probing or petroleum
The professional sampler of gas department.Water intaking sample loading mode uses first drilling mostly, is again put into sampler in earth's surface after pore-forming
Water sampling acquisition is carried out in drilling.This mode often will cause stratum along the underground of different depth layer position due to drilling in advance
Water mixing is not entirely to obtain from the scheduled gas-bearing formation of institute, and drill slurry coat method meeting so as to cause institute's water sampling
The pH value for changing underground water, the water sample for causing sampler to obtain do not have representativeness, really cannot directly reflect in stratum in situ
Water constituent, may cause inaccuracy result of laboratory test.The professional sampler structure complexity of another aspect petroleum gas department,
Expensive, heavy and inconvenient to carry, it is standby that general geotechnical engineering investigation unit is difficult to have these professional sampling cartridges.
Summary of the invention
Place in view of the shortcomings of the prior art, the purpose of the present invention is to provide a kind of for shallow-layer gas-bearing formation
Water sampling probe and acquisition method in situ, water sampling probe in situ have many advantages, such as that structure is simple, easy to carry, carry general
Logical static penetrometer can obtain the water sample in situ in predetermined gas-bearing layer；It solves and is carried out at present in geological province containing shallow gas
In geotechnical engineering investigation, lacks easy water sample acquisition device in situ and water intaking and be easy to be mixed with the difficulty of other impurities in the process
Topic.
The purpose of the invention is achieved by the following technical solution:
A kind of water sampling in situ probe for shallow-layer gas-bearing formation, mainly by probe first part, probe second
Point and probe Part III successively airtight connection forms from bottom to up；The probe first part includes probe pipe A and is set in
Cyclic annular permeable stone outside probe pipe A, the inside probe pipe A have probe lumen, and the tube wall of the probe pipe A is provided with several
It is a with the water flowing hole that is connected of probe lumen, the water inlet end of the water flowing hole with ring-type permeable stone inner wall is corresponding contacts；
The probe second part includes inside probe pipe B, the probe pipe B filled with sponge protective, in the sponge protective
Portion is fixed with double end injection needle, and the double end injection needle includes top syringe needle and lower needle, and the lower needle and probe are managed
Chamber is corresponding；The probe Part III includes probe pipe C, is fixed with fixed belt hole baffle at the top of the lumen of the probe pipe C,
Lifting is movably installed with movable snap-gauge at the top of the lumen of the probe pipe C, and the activity snap-gauge is located at below fixed belt hole baffle,
Spring is connected between the activity snap-gauge and fixed belt hole baffle, it is true to be equipped with single port aluminum in the lumen of the probe pipe C
Empty bottle, single port aluminium made vacuum bottom of bottle portion are bottleneck, and single port aluminium made vacuum top of bottle is connect with movable snap-gauge, and the single port aluminum is true
It is closed on the bottleneck of empty bottle bottom that the second silica gel plug, the bottleneck phase of the top syringe needle and single port aluminium made vacuum bottom of bottle portion are installed
It is corresponding；The fixed belt hole baffle center is provided with through-hole, is fixed with pull rod at the top of the activity snap-gauge, passes through at the top of the pull rod
The through-hole of fixed belt hole baffle, the fixed belt hole baffle top are provided with positioning groove around through-hole, are equipped on the pull rod
Bridging corresponding with positioning groove, the pull rod top are connected with rope.
In order to which the present invention is better achieved, the invention also includes static sounding inserting tube, static sounding inserting tube bottom with
Connection at the top of probe Part III, the rope are located in the lumen of static sounding inserting tube.
Preferably, being fixed with hook at the top of the pull rod, the rope bottom is fixedly connected on hook.
Preferably, active card board bottom portion has clamping set, the single port aluminium made vacuum top of bottle cooperation is connected in
In clamping set.
Preferably, the bottom probe pipe A of the probe first part is fixed with the probe cone of conical by its shape.
Preferably, having the first screw thread tubing string, the probe second at the top of the probe pipe A of the probe first part
Point the probe bottom pipe B connect with the first screwed pipe male screw, it is closed in the tube cavity of the first screw thread tubing string to be equipped with the
One silica gel plug；There is the second screw thread tubing string, the probe of the probe Part III at the top of the probe pipe B of the probe second part
The bottom pipe C is connect with the second screwed pipe male screw；There is third screw thread tubing string at the top of the probe pipe C of the probe Part III,
Static sounding inserting tube bottom is connect with the third screwed pipe male screw of probe pipe C.
Preferably, the water flowing hole is rounded, the water flowing hole is circumferentially arranged along the tube wall of probe pipe A,
All water flowing holes are uniformly stacked at the top of tube wall bottom to the tube wall of probe pipe A.
Preferably, being installed on static penetrometer at the top of the static sounding inserting tube the invention also includes static penetrometer
On, static sounding inserting tube is assembled by several section feeler lever pipes.
Preferably, the bridging is hinged by two struts at middle part, two struts of the bridging
It is symmetrical with the vertical line for passing through middle part hinge joint, at the top of two strut bottoms of the bridging and fixed belt hole baffle
Positioning groove it is corresponding.
Water sampling probe in original position of the present invention consists of three parts, and three parts are sequentially consisted of from probe first
Divide, pop one's head in second part and probe Part III, probe first part is by water flowing hole, the first silica gel plug, probe cone, ring-type
Permeable stone, probe lumen, the first screw thread tubing string composition.The probe pipe A outer wall of probe first part is set with cyclic annular permeable stone, ring
Shape permeable stone can by the mud particle in gas-bearing formation obstruct outside, and make water be freely accessible to probe first part probe
Inside pipe A；There is probe lumen, which can temporarily store what outside entered inside the probe pipe A of probe first part
Water is gentle, and tentatively carries out aqueous vapor separation (since gas is more light-weight than water)；In the probe lumen of cyclic annular permeable stone and probe pipe A
Between be provided with several water flowing holes, the water in situ of gas-bearing formation can enter water flowing hole by cyclic annular permeable stone, subsequently into
It pops one's head in the probe lumen of pipe A, after multiple water flowing holes can prevent certain holes to be blocked, external water can not pass through ring-type
Permeable stone enters in the probe lumen of probe first part；First silica gel plug is located at the top of the probe lumen of probe pipe A, the first silicon
The function of rubber plug is in the gentle infiltration probe second part of water stored in the probe lumen for prevent probe pipe A；Entire probe the
A part is mainly used to collect from predetermined gas-bearing formation and tentatively stores water in situ.
Probe second part is mainly made of the second screw thread tubing string, double end injection needle, sponge protective.Probe second part
Bottom end with probe first part at the top of the second screwed pipe male screw tighten, pop one's head in second part at the top of the second screw thread tubing string with
Probe Part III bottom thread is tightened；Double end injection needle is placed on vertically in probe second part, when the lower part of double end injection needle
The first silica gel plug in syringe needle insertion probe first part can when top syringe needle is inserted into the second silica gel plug of probe Part III
To be connected to the single port aluminium made vacuum bottle (light-weight and be not easy to get rusty) of the probe lumen of probe first part and Part III of popping one's head in,
To which water in situ is sucked into single port aluminium made vacuum bottle；Sponge protective is filled in around double end injection needle, is infused to double end
It penetrates needle and plays fixed function, prevent its position from shifting, while sponge protective can also play a supportive role to double end injection needle,
Its syringe needle is prevented to be inserted into silica gel plug in advance.
Part III pop one's head in by third screw thread tubing string, movable snap-gauge, clamping set, pull rod, spring, positioning groove, fixing belt
Hole baffle, bridging, single port aluminium made vacuum bottle (light-weight and be not easy to get rusty), the second silica gel plug, hook, rope composition；Probe
It is tightened with the second screwed pipe male screw at the top of probe second part Part III bottom；Clamping set is fixed on active card board bottom
Portion, mainly play a part of fixation single port aluminium made vacuum bottle, movable snap-gauge can be discharged by spring after elastic force as first initiating
Can, the second silica gel plug of single port aluminium made vacuum bottle is pressed downward in the double end injection needle of probe second part；Single port aluminum is true
Second silica gel plug of empty bottle bottom end can keep vacuum in single port aluminium made vacuum bottle for sealing；It is fixed on movable snap-gauge
Baffle of porous baffle has a circular through-hole among fixed belt hole baffle, can accommodate pull rod and pass through.It is each in circular through-hole two sides
There is one positioning groove.The through-hole that pull rod passes through fixed belt hole baffle links together with movable snap-gauge and can be with activity
The movement of snap-gauge progress vertical direction.It is connected between movable snap-gauge and fixed belt hole baffle with spring, there is a bridging on pull rod,
When compressed spring by the bridging on pull rod pass through fixed belt hole baffle top, be separately inserted two sides with hand handle bridging and fix
In the positioning groove of baffle of porous baffle, pull rod can be fixed together with movable snap-gauge at this time；The top of pull rod is equipped with a hook, can will restrict
Rope is connected on hook.Rope stretches out earth's surface out of hollow static sounding inserting tube, can be by rope in ground table handling pull rod.
When water sampling in situ probe, which arrives at scheduled gas-bearing layer, prepares water intaking, upward lifting rope rope allows bridging to be detached from positioning groove,
Bridging can close naturally close under the effect of gravity, unclamp rope at this time, and the elastic force that spring-compressed generates provides dynamic for movable snap-gauge
Power makes movable snap-gauge together with the pull rod on top, the single port aluminium made vacuum bottle vertical downward movement of lower part, to make single port aluminium
Second silica gel plug of Dewar bottle processed is connected to the probe lumen in double end injection needle and probe first part in probe second part；
Under the suction that single port aluminium made vacuum bottle provides, suck the water sample in situ in probe first part by double end injection needle
In single port aluminium made vacuum bottle, to complete the acquisition to gas-bearing layer original position water sample.Part III top pop one's head in third screw thread
Tubing string, third screw thread tubing string can be tightened mutually with static sounding inserting tube, and static sounding inserting tube can carry static penetrometer, from
And common static penetrometer can be carried and be popped one's head in using water sampling in situ of the invention.
A kind of water sampling method in situ for shallow-layer gas-bearing formation, including water sampling in situ probe, acquisition side
Method is as follows:
A, field device assembles: assembling probe first part first carries out cyclic annular permeable stone to vacuumize saturation, to exclude
Air therein, then by cyclic annular permeable stone be fixed on probe first part outside, it is ensured that cyclic annular permeable stone appearance with
First part's joining place of popping one's head in is smooth, is fitted tightly over the inner wall of cyclic annular permeable stone together with all water flowing holes, it is ensured that former
Position water sample can be entered after water flowing hole in the probe lumen of probe first part by cyclic annular permeable stone；Then assembling probe
Second part, by pop one's head in second part bottom with probe first part at the top of the first screwed pipe male screw tighten, after will be extra large
The double end injection needle of continuous protective package is placed on vertically inside the probe pipe B of probe second part；Then assembling probe third
Part will fix rope first on hook, and be previously threaded through in static sounding inserting tube, tightly by single port aluminium made vacuum top of bottle
Ground is connected to the clamping set of movable snap-gauge, then rope is pulled to pull up by pull rod, the part with bridging is allowed to appear in band
The upper end of hole fixed baffle, bridging is strutted, and two strut bottoms of bridging is made to be inserted into fixed baffle through-hole with holes respectively
In the positioning groove of two sides, after going through and ensuring fixation, by probe Part III bottom and probe second part top
The second screwed pipe male screw in portion is tightened, and water sampling probe assembling completely in situ finishes at this time, and water sampling in situ is popped one's head in
Top is tightened with static sounding inserting tube bottom thread, can start to carry out feeler inspection penetration test；
B, water sampling: stratum successively includes that cultivated soil layer, cap rock and gas-bearing layer, the level of ground water of planting of earth's surface is located at from top to bottom
In cap rock, ploughs to plant in earth's surface and fix static penetrometer on soil layer, static sounding inserting tube and original position are installed on static penetrometer
After water sampling probe, start injection, speed control is 1~2cm/s；Stop injection after reaching scheduled gas-bearing layer, on ground
Table, which is ploughed to plant, by rope pulls up about 10cm on soil layer, and bridging can be inwardly closed under Gravitative Loads, after static 5s slowly to
Lower release rope, decentralization 10cm or so, it is ensured that the bridging position on pull rod 33 passes through the through-hole of fixing belt orifice plate, quickly unclamps
Rope is transporting movable snap-gauge downwards with single port aluminium made vacuum bottle under gravity and the elastic force collective effect of spring offer
It is dynamic, it connect the second silica gel plug of single port aluminium made vacuum bottle closely with the top syringe needle of double end injection needle, and oppress double end injection
Needle moves downwardly together, and the lower needle of final double end injection needle is connected with the first silica gel plug of probe first part, and bullet
Spring completely it is flexible open after single port aluminium made vacuum bottle, double end injection needle, probe lumen will be made to be connected, at this point, single port aluminum is true
The negative pressure of empty bottle is single by the sucking of double end injection needle by the water sample in situ in the gas-bearing layer in the probe lumen for first part of popping one's head in
In mouth aluminium made vacuum bottle；To make water sample in situ in gas-bearing layer complete from cyclic annular permeable stone, water flowing hole, probe lumen, double
Head injection needle, single port aluminium made vacuum bottle are sequentially communicated and realize sampling process；Operating time should continue enough length, to ensure to take
To enough water samples, specifically: sample time control is 60~180min in cohesive soil, and sample time control is 5 in sand
~20min；
C, equipment recycles: one section of static sounding inserting tube, one section being fetched, is ploughed when water sampling in situ probe is recovered to earth's surface
When planting soil layer, quickly probe Part III and probe second part screw thread are unscrewed, by double end injection needle and single port aluminium made vacuum
Then the second silica gel plug separation of bottle removes single port aluminium made vacuum bottle, at this time single port aluminum from the clamping of movable snap-gauge set
It is the water sample in situ for the pure gas-bearing layer being collected into Dewar bottle, indoor assay can be carried out by taking back laboratory；It will
Instrument all parts are removed, and collection installs, reuse when to carry out water sampling next time.
The present invention compared with the prior art, have the following advantages that and the utility model has the advantages that
(1) present invention has many advantages, such as that structure is simple, easy to carry, carries common static penetrometer, can obtain pre-
Determine the water sample in situ in gas-bearing layer.
(2) present invention solves carries out in geotechnical engineering investigation in geological province containing shallow gas at present, and the prior art lacks letter
Just water sample acquisition device in situ and water intaking is easy to be mixed with the problem of other impurities in the process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present invention water sampling probe in situ；
Fig. 2 is the structural schematic diagram of present invention probe first part；
Fig. 3 is the structural schematic diagram of present invention probe second part；
Fig. 4 is the structural schematic diagram of present invention probe Part III；
Fig. 5 is the structural schematic diagram of single port aluminium made vacuum bottle；
Fig. 6 is the structural schematic diagram of bridging；
Fig. 7 is the operation principle schematic diagram between movable snap-gauge and bridging；
Fig. 8 installs and uses schematic diagram for present invention water sampling probe in situ.
Wherein, title corresponding to the appended drawing reference in attached drawing are as follows:
10- static penetrometer, 20- earth's surface, which is ploughed, plants soil layer, 30- cap rock, 40- gas-bearing layer, the water sampling of the original position 50-
Probe, 60- level of ground water, 1- probe first part, 11- water flowing hole, 12- ring-type permeable stone, the first silica gel plug of 13-,
14- the first screw thread tubing string, 15- probe cone, 16- probe lumen, 2- probe second part, 21- double end injection needle,
The top 211- syringe needle, 212- lower needle, 22- sponge protective, 23 second screw thread tubing strings, 3- probe Part III,
31- activity snap-gauge, 32- clamping set, 33- pull rod, 34- spring, 35- positioning groove, 36- fixed belt hole baffle, 37-
Bridging, 4- single port aluminium made vacuum bottle, the second silica gel plug of 41-, 5- hook, 6- rope, 7- static sounding inserting tube.
Specific embodiment
The present invention is described in further detail below with reference to embodiment:
Embodiment
As shown in FIG. 1 to FIG. 8, a kind of water sampling in situ probe for shallow-layer gas-bearing formation, mainly by probe first
Successively airtight connection forms from bottom to up for part 1, probe second part 2 and probe Part III 3.Probe first part 1 include
Probe pipe A and the cyclic annular permeable stone 12 being set in outside probe pipe A, the inside probe pipe A have probe lumen 16, probe pipe A's
Tube wall is provided with several water flowing holes 11 being connected with probe lumen 16, the water inlet end of water flowing hole 11 and cyclic annular permeable stone 12
The corresponding contact of inner wall.Second part 2 of popping one's head in includes probe pipe B, and sponge protective 22 is filled with inside probe pipe B, and sponge protects
Double end injection needle 21 is fixed with inside watch box 22, double end injection needle 21 includes top syringe needle 211 and lower needle 212, lower needle
First 212 is corresponding with probe lumen 16.Part III 3 of popping one's head in includes probe pipe C, is fixed with fixation at the top of the lumen for the pipe C that pops one's head in
Baffle of porous baffle 36, the lumen top lifting for the pipe C that pops one's head in are movably installed with movable snap-gauge 31, and movable snap-gauge 31 is located at fixed belt hole gear
36 lower section of plate, is connected with spring 34 between movable snap-gauge 31 and fixed belt hole baffle 36, be equipped with single port in the lumen for the pipe C that pops one's head in
Aluminium made vacuum bottle 4,4 bottom of single port aluminium made vacuum bottle are bottleneck, and 4 top of single port aluminium made vacuum bottle is connect with movable snap-gauge 31, single
It is closed on the bottleneck of 4 bottom of mouth aluminium made vacuum bottle that the second silica gel plug 41, top syringe needle 211 and single port aluminium made vacuum bottle 4 are installed
The bottleneck of bottom is corresponding.36 center of fixed belt hole baffle is provided with through-hole, and pull rod 33, pull rod 33 are fixed at the top of movable snap-gauge 31
Top passes through the through-hole of fixed belt hole baffle 36, surrounds through-hole at the top of fixed belt hole baffle 36 and is provided with positioning groove 35, pull rod 33
On bridging 37 corresponding with positioning groove 35 is installed, be connected with rope 6 at the top of pull rod 33.
As shown in Figure 1, the invention also includes static sounding inserting tube 7,7 bottom of static sounding inserting tube and probe Part III 3
Top connection, rope 6 are located in the lumen of static sounding inserting tube 7.Hook 5 is fixed at the top of pull rod 33,6 bottom of rope is fixed to be connected
It is connected on hook 5.
As Figure 1 and Figure 4, movable 31 bottom of snap-gauge has clamping set 32, cooperates clamping at the top of single port aluminium made vacuum bottle 4
In clamping set 32.As shown in Fig. 2, the bottom probe pipe A of probe first part 1 is fixed with the probe cone 15 of conical by its shape,
The probe cone 15, which is conducive to plough through earth's surface, plants soil layer 20, cap rock 30, gas-bearing layer 40.
As shown in Figure 1, there is the first screw thread tubing string 14 at the top of the probe pipe A of probe first part 1, second part 2 of popping one's head in
The probe bottom pipe B be threadedly coupled with the first screw thread tubing string 14, it is closed in the tube cavity of the first screw thread tubing string 14 to be equipped with first
Silica gel plug 13.There is the second screw thread tubing string 23 at the top of the probe pipe B of probe second part 2, the probe pipe C for Part III 3 of popping one's head in
Bottom is threadedly coupled with the second screw thread tubing string 23.There is third screw thread tubing string, static(al) at the top of the probe pipe C of probe Part III 3
7 bottom of feeler inspection inserting tube is connect with the third screwed pipe male screw of probe pipe C.
As shown in Figure 1 and Figure 2, water flowing hole 11 is rounded, and water flowing hole 11 is circumferentially arranged along the tube wall of probe pipe A,
All water flowing holes 11 are uniformly stacked at the top of tube wall bottom to the tube wall of probe pipe A.
As shown in figure 8, being installed on static penetrometer at the top of static sounding inserting tube 7 the invention also includes static penetrometer 10
On 10, static sounding inserting tube 7 is assembled by several section feeler lever pipes.
As shown in fig. 6, bridging 37 is hinged by two struts at middle part, two struts of bridging 37 are to wear
The vertical line for crossing middle part hinge joint is symmetrical, two strut bottoms of bridging 37 and determining for 36 top of fixed belt hole baffle
Position groove 35 is corresponding.
As shown in FIG. 1 to FIG. 8, a kind of water sampling method in situ for shallow-layer gas-bearing formation, including water sample in situ are adopted
Collection probe 50, acquisition method is as follows:
A, field device assembles: assembling probe first part 1 first carries out cyclic annular permeable stone 12 to vacuumize saturation, with
Air therein is excluded, then cyclic annular permeable stone 12 is fixed on to the outside of probe first part 1, it is ensured that cyclic annular permeable stone
12 appearances and probe 1 joining place of first part are smooth, fit closely the inner wall of cyclic annular permeable stone 12 with all water flowing holes 11
Together, it is ensured that water sample in situ can enter the probe of probe first part 1 by cyclic annular permeable stone 12 after water flowing hole 11
In lumen 16.Then assembling probe second part 2, by the first spiral shell of 2 bottom of second part and 1 top of first part of popping one's head in of popping one's head in
14 screw thread of line tubing string is tightened, after by the double end injection needle 21 wrapped up by sponge protective 22 vertically be placed on probe second part 2
Probe pipe B inside.Then assembling probe Part III 3 will fix rope 6 on hook 5 first, and be previously threaded through static(al) touching
It visits in inserting tube 7,4 top of single port aluminium made vacuum bottle is tightly connected in the clamping set 32 of movable snap-gauge 31, rope is then pulled
Rope 6 allows pull rod 33 to pull up, and allows the part with bridging 37 to appear in the upper end of fixed baffle 36 with holes, bridging 37 is supportted
It opens, is inserted into two strut bottoms of bridging 37 respectively in the positioning groove 35 of 36 through-hole two sides of fixed baffle with holes, carefully
After checking and ensuring fixation, by 23 spiral shell of the second screw thread tubing string of 3 bottom of Part III and 2 top of second part of popping one's head in of popping one's head in
Line is tightened, and the assembling completely of water sampling probe 50 in situ finishes at this time, by 50 top of water sampling in situ probe and static sounding
7 bottom thread of inserting tube is tightened, and can start to carry out feeler inspection penetration test.
B, water sampling: stratum successively includes that earth's surface ploughs plant soil layer 20, cap rock 30 and gas-bearing layer 40, underground water from top to bottom
Position 60 is located in cap rock 30, ploughs to plant in earth's surface and fixes static penetrometer 10 on soil layer 20, installs and be fond of tranquility on static penetrometer 10
After power feeler inspection inserting tube 7 and water sampling probe 50 in situ, start injection, speed is 1~2cm/s.When reaching scheduled gas-bearing layer
Stop injection after 40, plough to plant in earth's surface rope 6 is pulled up into about 10cm on soil layer 20, bridging 37 can be under Gravitative Loads
Interior closure slowly unclamps downwards rope 6, decentralization 10cm or so after static 5s, it is ensured that 37 position of bridging on pull rod 33 passes through
The through-hole of fixing belt orifice plate 36 quickly unclamps rope 6, makes movable snap-gauge 31 common from the elastic force of gravity and the offer of spring 34
It is moved downward under effect with single port aluminium made vacuum bottle 4, makes the second silica gel plug 41 and double end injection needle of single port aluminium made vacuum bottle 4
21 top syringe needle 211 closely connects, and oppresses double end injection needle 21 and move downwardly together, the lower part of final double end injection needle 21
Syringe needle 212 is connected with the first silica gel plug 13 of probe first part 1, and spring 34 completely it is flexible open after will make single port aluminum
Dewar bottle 4, double end injection needle 21, probe lumen 16 are connected, at this point, the negative pressure of single port aluminium made vacuum bottle 4 will pop one's head in first
The water sample in situ in gas-bearing layer 40 divided in 1 probe lumen 16 is sucked in single port aluminium made vacuum bottle 4 by double end injection needle 21.
To make the water sample in situ in gas-bearing layer 40 complete from cyclic annular permeable stone 12, water flowing hole 11, probe lumen 16, double end injection needle
21, single port aluminium made vacuum bottle 4 is sequentially communicated and realizes sampling process.Operating time should continue enough length, to ensure to get foot
Enough water samples, specifically: sample time control is 60~180min in cohesive soil, in sand sample time control for 5~
20min。
C, equipment recycles: 7 one section of static sounding inserting tube, one section being fetched, when water sampling in situ probe 50 is recovered to earth's surface
When ploughing plant soil layer 20, quickly probe Part III 3 is unscrewed with probe 2 screw thread of second part, by double end injection needle 22 and single port
Second silica gel plug 41 of aluminium made vacuum bottle 4 separates, and then takes single port aluminium made vacuum bottle 4 from the clamping of movable snap-gauge 31 set 32
Under, it is at this time the water sample in situ of pure gas-bearing layer 40 being collected into single port aluminium made vacuum bottle 4, taking back laboratory can be into
Row interior assay.Instrument all parts are removed, collection installs, reuse when to carry out water sampling next time.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of water sampling in situ for shallow-layer gas-bearing formation is popped one's head in, it is characterised in that: mainly by first part of popping one's head in
(1), popping one's head in second part (2) and pop one's head in, Part III (3) successively airtight connection forms from bottom to up；The probe first part
It (1) include pop one's head in pipe A and the cyclic annular permeable stone (12) being set in outside probe pipe A, the inside probe pipe A has probe lumen
(16), the tube wall of the probe pipe A is provided with several water flowing holes (11) being connected with probe lumen (16), the limbers
The contact corresponding with cyclic annular permeable stone (12) inner wall of the water inlet end in hole (11)；The probe second part (2) includes probe pipe B,
Sponge protective (22) are filled with inside the probe pipe B, are fixed with double end injection needle inside the sponge protective (22)
(21), the double end injection needle (21) includes top syringe needle (211) and lower needle (212), the lower needle (212) and is visited
Head tube chamber (16) is corresponding；The probe Part III (3) includes probe pipe C, is fixed at the top of the lumen of the probe pipe C
Determine baffle of porous baffle (36), lifting is movably installed with movable snap-gauge (31) at the top of the lumen of the probe pipe C, the activity snap-gauge
(31) it is located at below fixed belt hole baffle (36), is connected with spring between the activity snap-gauge (31) and fixed belt hole baffle (36)
(34), single port aluminium made vacuum bottle (4) being installed in the lumen of the probe pipe C, single port aluminium made vacuum bottle (4) bottom is bottleneck,
It is connect at the top of single port aluminium made vacuum bottle (4) with movable snap-gauge (31), it is closed on the bottleneck of single port aluminium made vacuum bottle (4) bottom
It is equipped with the second silica gel plug (41), the top syringe needle (211) is corresponding with the bottleneck of single port aluminium made vacuum bottle (4) bottom；Institute
It states fixed belt hole baffle (36) center and is provided with through-hole, be fixed with pull rod (33), the pull rod at the top of the activity snap-gauge (31)
(33) top passes through the through-hole of fixed belt hole baffle (36), and it is recessed around through-hole to be provided with positioning at the top of the fixed belt hole baffle (36)
Slot (35), is equipped with bridging (37) corresponding with positioning groove (35) on the pull rod (33), at the top of the pull rod (33)
It is connected with rope (6).
2. a kind of water sampling in situ for shallow-layer gas-bearing formation described in accordance with the claim 1 is popped one's head in, it is characterised in that: also
Including static sounding inserting tube (7), it is connect at the top of static sounding inserting tube (7) bottom and probe Part III (3), the rope
(6) in the lumen of static sounding inserting tube (7).
3. a kind of water sampling in situ for shallow-layer gas-bearing formation according to claim 1 or 2 is popped one's head in, feature exists
In: it is fixed with hook (5) at the top of the pull rod (33), rope (6) bottom is fixedly connected on hook (5).
4. a kind of water sampling in situ for shallow-layer gas-bearing formation described in accordance with the claim 1 is popped one's head in, it is characterised in that: institute
Stating movable snap-gauge (31) bottom has clamping set (32), and cooperation is connected in clamping set at the top of the single port aluminium made vacuum bottle (4)
(32) in.
5. a kind of water sampling in situ for shallow-layer gas-bearing formation described in accordance with the claim 1 is popped one's head in, it is characterised in that: institute
The bottom probe pipe A for stating probe first part (1) is fixed with the probe cone (15) of conical by its shape.
6. a kind of water sampling in situ for shallow-layer gas-bearing formation is popped one's head according to claim 2, it is characterised in that: institute
Stating has the first screw thread tubing string (14) at the top of the probe pipe A of probe first part (1), the probe of probe second part (2)
The bottom pipe B is threadedly coupled with the first screw thread tubing string (14), closed in the tube cavity of the first screw thread tubing string (14) to be equipped with
One silica gel plug (13)；There is the second screw thread tubing string (23), the probe the at the top of the probe pipe B of probe second part (2)
The probe bottom pipe C of three parts (3) is threadedly coupled with the second screw thread tubing string (23)；The probe pipe C of probe Part III (3)
Top has third screw thread tubing string, and static sounding inserting tube (7) bottom is connect with the third screwed pipe male screw of probe pipe C.
7. a kind of water sampling in situ for shallow-layer gas-bearing formation described in accordance with the claim 1 is popped one's head in, it is characterised in that: institute
State that water flowing hole (11) is rounded, the water flowing hole (11) is circumferentially arranged along the tube wall of probe pipe A, all water flowing holes
(11) it is uniformly stacked at the top of tube wall bottom to the tube wall of probe pipe A.
8. popping one's head according to a kind of water sampling in situ for shallow-layer gas-bearing formation described in claim 2 or 6, feature exists
In: further include static penetrometer (10), is installed on static penetrometer (10) at the top of the static sounding inserting tube (7), static(al) touching
Visit inserting tube (7)) assembled by several section feeler lever pipes.
9. a kind of water sampling in situ for shallow-layer gas-bearing formation described in accordance with the claim 1 is popped one's head in, it is characterised in that: institute
It states bridging (37) and is hinged by two struts at middle part, two struts of the bridging (37) are cut with scissors with passing through middle part
The vertical line of contact is symmetrical, two strut bottoms of the bridging (37) and determining at the top of fixed belt hole baffle (36)
Position groove (35) is corresponding.
10. a kind of water sampling method in situ for shallow-layer gas-bearing formation, it is characterised in that: pop one's head in including water sampling in situ
(50), acquisition method is as follows:
A, field device assembles: assembling probe first part (1) first carries out cyclic annular permeable stone (12) to vacuumize saturation, with
Air therein is excluded, cyclic annular permeable stone (12) is then fixed on to the outside of probe first part (1), it is ensured that is cyclic annular saturating
Water stone (12) appearance and probe first part (1) joining place are smooth, make the inner wall and all water flowing holes of cyclic annular permeable stone (12)
(11) it fits closely together, it is ensured that water sample in situ can be entered after water flowing hole (11) by cyclic annular permeable stone (12) pops one's head in
In the probe lumen (16) of first part (1)；Then assembling probe second part (2) by probe second part (2) bottom and is visited
First screw thread tubing string (14) screw thread at the top of head first part (1) is tightened, after the double end that will be wrapped up by sponge protective (22) infuse
Needle (21) is penetrated to be placed on vertically inside the probe pipe B of probe second part (2)；Then assembling probe Part III (3) first will
Rope (6) are fixed on hook (5), and are previously threaded through in static sounding inserting tube (7), it will be tight at the top of single port aluminium made vacuum bottle (4)
It is tightly connected in the clamping set (32) of movable snap-gauge (31), then pulls rope (6) that pull rod (33) is allowed to pull up, band is allowed to cut
The part of knife support (37) appears in the upper end of fixed baffle with holes (36), and bridging (37) is strutted, the two of bridging (37) are made
A strut bottom is inserted into respectively in the positioning groove (35) of fixed baffle with holes (36) through-hole two sides, is gone through and is ensured to fix
After securely, Part III (3) bottom that will pop one's head in is tightened with second screw thread tubing string (23) screw thread at the top of probe second part (2),
Original position water sampling probe (50) assembling completely at this time finishes, by water sampling in situ probe (50) top and static sounding inserting tube
(7) bottom thread is tightened, and can start to carry out feeler inspection penetration test；
B, water sampling: stratum successively includes that earth's surface ploughs plant soil layer (20), cap rock (30) and gas-bearing layer (40), underground from top to bottom
Water level (60) is located in cap rock (30), ploughs to plant in earth's surface and fixes static penetrometer (10) on soil layer (20), in static penetrometer
(10) after installing static sounding inserting tube (7) and water sampling in situ probe (50) on, starting injection, speed control is 1~
2cm/s；Stop injection after reaching scheduled gas-bearing layer (40), is ploughed in plant soil layer (20) in earth's surface and pull up rope (6)
About 10cm, bridging (37) can be inwardly closed under Gravitative Loads, slowly unclamp rope (6) downwards after static 5s, transfer 10cm
Left and right, it is ensured that the bridging (37) on pull rod (33) resets and pass through the through-hole of fixing belt orifice plate (36), quickly unclamps rope
(6), make movable snap-gauge (31) from gravity and spring (34) offer elastic force collective effect under with single port aluminium made vacuum bottle
(4) it moves downward, makes the second silica gel plug (41) of single port aluminium made vacuum bottle (4) and the top syringe needle of double end injection needle (21)
(211) close connection, and oppress double end injection needle (21) and move downwardly together, the lower needle of final double end injection needle (21)
(212) be connected with the first silica gel plug (13) of probe first part (1), and spring (34) completely it is flexible open after will make single port
Aluminium made vacuum bottle (4), double end injection needle (21), probe lumen (16) are connected, at this point, the negative pressure of single port aluminium made vacuum bottle (4)
Water sample in situ in gas-bearing layer (40) in the probe lumen (16) of probe first part (1) is passed through double end injection needle (21) to inhale
Enter in single port aluminium made vacuum bottle (4)；To make the water sample in situ in gas-bearing layer (40) complete from cyclic annular permeable stone (12), limbers
Hole (11), probe lumen (16), double end injection needle (21), single port aluminium made vacuum bottle (4) are sequentially communicated and realize sampling process；Behaviour
Enough length should be continued by making the time, to ensure to get enough water samples, specifically: in cohesive soil sample time control for 60~
180min, sample time control is 5~20min in sand；
C, equipment recycles: one section of (7) one section of static sounding inserting tube being fetched, when water sampling in situ probe (50) is recovered to earth's surface
When ploughing plant soil layer (20), it will quickly pop one's head in Part III (3) and probe second part (2) screw thread is unscrewed, by double end injection needle
(22) it is separated with the second silica gel plug (41) of single port aluminium made vacuum bottle (4), then by single port aluminium made vacuum bottle (4) from movable snap-gauge
(31) clamping set (32) is removed, and is at this time the original for the pure gas-bearing layer (40) being collected into single port aluminium made vacuum bottle (4)
Position water sample, indoor assay can be carried out by taking back laboratory；Instrument all parts are removed, collection installs, so as to next time into
It is reused when row water sampling.
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| CN109916655A (en) * | 2019-04-18 | 2019-06-21 | 国家深海基地管理中心 | Underwater research vehicle carrying type deep sea sediment sampler |
| CN110644981A (en) * | 2019-09-17 | 2020-01-03 | 中国电建集团华东勘测设计研究院有限公司 | Telescopic air release rod and shallow layer air micro-disturbance in-situ controlled release system and method |
| CN110658328A (en) * | 2019-11-01 | 2020-01-07 | 中国科学院武汉岩土力学研究所 | Portable in-situ gas content measuring device and method for shallow gas-containing stratum |
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| CN110700229A (en) * | 2019-11-01 | 2020-01-17 | 中国科学院武汉岩土力学研究所 | Portable in-situ air pressure measuring device and method for shallow gas-bearing stratum |
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| CN111024452A (en) * | 2020-01-09 | 2020-04-17 | 中国科学院武汉岩土力学研究所 | Novel water-gas synchronous sampling probe for rock-soil stratum |
| CN111024452B (en) * | 2020-01-09 | 2024-04-26 | 中国科学院武汉岩土力学研究所 | Novel water-gas synchronous sampling probe for rock-soil stratum |
| CN111579289A (en) * | 2020-06-26 | 2020-08-25 | 福州大学 | Soil sampling device and method for undisturbed sample of low-viscosity soil |
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