CN106683745A - Resistance changing agent for changing soil resistance - Google Patents
Resistance changing agent for changing soil resistance Download PDFInfo
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- CN106683745A CN106683745A CN201611191217.0A CN201611191217A CN106683745A CN 106683745 A CN106683745 A CN 106683745A CN 201611191217 A CN201611191217 A CN 201611191217A CN 106683745 A CN106683745 A CN 106683745A
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- electroconductive
- soil
- cements
- nacls
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- Chemical & Material Sciences (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a resistance changing agent for changing soil resistance. The resistance changing agent is characterized by comprising a composite powder preparation for electric conduction. The composite powder preparation comprises the following raw materials by weight: 5-15 parts of graphite, 1-10 parts of mineral glue, 1-10 parts of resin, 1-10 parts of conductive cement, 1-10 parts of metal powder and 1-6 parts of industrial salt. In soil resistance changing, the resistance changing agent further comprises water. Furthermore the weight ratio between the water and the composite powder preparation is 33-100:16-48. The resistance changing agent can be well kept in the clearances among soil, gravels and rocks for effectively enlarging a conductive range next to a grounding member, thereby sufficiently discharging lightning current to ground when lightning occurs. Furthermore the resistance changing agent has relatively high solidifiability and is not easily washed away by rainwater. The resistance changing agent is totally composed of natural mineral materials and causes no pollution to soil, crops and plants.
Description
Technical field
The invention belongs to resistance reduction technology field, and in particular to a kind of to change resist for change electric resistance of soil.
Background technology
Ground connection is to ensure equipment and building and the important means of personal safety such as electric, communication, microelectronics.In order to ensure
The electrical equipment of the normal operation of power system and the safety of the person and equipment, power plant and transformer station to accomplish reliable ground and
With relatively low grounding resistance, but due to being limited by objective condition, only connect by playing angle bar stake, extending grounding body and expand
Earth mat is typically highly difficult reaching so high requirement.Grounded resistance reducing agent is a kind of auxiliary agents, in earth work
Middle extensive application, its drop resistance, corrosion inhibition are stable, work well, and national standard and relevant industries standard, practice card have been written into
The bright effective measures for being to reduce earth resistance.
At present there is following several frequently seen friction reducer in state of the art：
Application for a patent for invention 201510316067.0 discloses a kind of new friction reducer of macromole, and it is with macromolecular polymeric
Thing is conductive material, and according to weight, the friction reducer includes following components：Leading agent 50%~60%；Modifying agent
5%~10%；Conductive material 20%~30%；Auxiliary agent 5%~10%；Wherein described leading agent is sodium bentonite；It is described to change
Property agent be cetyl trimethylammonium bromide；The conductive material is polypyrrole；The auxiliary agent is paratoluenesulfonic acid sodium salt and chlorination
Ferrous solution (1mol/L).
Application for a patent for invention 201510726707.5 discloses a kind of preparation method of instant water-in-oil type friction reducer, and it is special
Levy and be：Including the raw material of following parts by weight, 35~55 parts of monomeric acrylamide, 5~10 parts of methacrylic acid, 2- propylene
20~40 parts of amide -2- methyl propane sulfonic acids, 2.5~10 parts of compound surfactant, 50~70 parts of base oil, initiator 8~16
Part.
However, this area exist this several existing friction reducer there are the following problems：
1. powder is generally, and after being mixed with water, it can only realize contact of the metal with soil in grounded metal, it is conductive
Area or volume are fairly limited, and drop resistance ability is not good.
2., because being powdered rubber, it is difficult to retain so as to cause resistance reducing effect lasting in soil.
3. pair soil has certain pollution.
Therefore, this area needs the new soil of exploitation badly and changes resist to solve above-mentioned technical problem.
The content of the invention
Ability is good for above-mentioned drop resistance based on the existing drop resistance product objective reality in this area, effect not persistently, soil pollution
The problems such as, the invention provides a kind of brand-new formula changes resist, it is a kind of conductive composite powder that can be blended with water
Preparation, in grounding body circumfusion after mixing with water, is permeable in grounding body surrounding soil, then as mobilization force decrease certainly
Right precipitation, forms tree root shape soil conductivity path, strengthens ground networks Soil Surrounding conductive capability decades of times, by being grounded
The larger space of body surrounding soil resistivity is filled so as to improve the conductivity of soil in the certain limit of local, and then changes soil
Resistivity.
The technical scheme of the employing that solves the above problems of the present invention is as follows：
Change resist for change electric resistance of soil, it is characterised in that include for conductive composite powder preparation；
The composite powder preparation includes the raw material of following weight portion：5-15 part graphite powders, 1-10 part mineral rubbers, 1-10 parts
Resin, 1-10 part electroconductive cements, 1-10 part metal dusts, 1-6 part Nacls.
The resist that changes also includes water；The water is 40-100: 6-40 with the weight of the composite powder preparation.
Composition of raw materials of the composite powder preparation selected from following weight parts：
5 parts of graphite powders, 1 part of mineral rubber, 1 part of resin, 1 part of electroconductive cement, 1 part of metal dust, 1 part of Nacl；
15 parts of graphite powders, 10 parts of mineral rubbers, 10 parts of resins, 10 parts of electroconductive cements, 10 parts of metal dusts, 6 parts of Nacls；
10 parts of graphite powders, 5 parts of mineral rubbers, 5 parts of resins, 5 parts of electroconductive cements, 5 parts of metal dusts, 3 parts of Nacls；
5 parts of graphite powders, 10 parts of mineral rubbers, 1 part of resin, 10 parts of electroconductive cements, 1 part of metal dust, 1 part of Nacl；
15 parts of graphite powders, 1 part of mineral rubber, 10 parts of resins, 10 parts of electroconductive cements, 1 part of metal dust, 6 parts of Nacls；
6 parts of graphite powders, 2 parts of mineral rubbers, 2 parts of resins, 2 parts of electroconductive cements, 2 parts of metal dusts, 2 parts of Nacls；
7 parts of graphite powders, 3 parts of mineral rubbers, 3 parts of resins, 3 parts of electroconductive cements, 3 parts of metal dusts, 3 parts of Nacls；
8 parts of graphite powders, 4 parts of mineral rubbers, 4 parts of resins, 4 parts of electroconductive cements, 4 parts of metal dusts, 4 parts of Nacls；
9 parts of graphite powders, 5 parts of mineral rubbers, 5 parts of resins, 5 parts of electroconductive cements, 5 parts of metal dusts, 5 parts of Nacls；
10 parts of graphite powders, 6 parts of mineral rubbers, 6 parts of resins, 6 parts of electroconductive cements, 6 parts of metal dusts, 6 parts of Nacls；
11 parts of graphite powders, 7 parts of mineral rubbers, 7 parts of resins, 7 parts of electroconductive cements, 7 parts of metal dusts, 4 parts of Nacls；
12 parts of graphite powders, 8 parts of mineral rubbers, 8 parts of resins, 8 parts of electroconductive cements, 8 parts of metal dusts, 5 parts of Nacls；
13 parts of graphite powders, 9 parts of mineral rubbers, 9 parts of resins, 9 parts of electroconductive cements, 9 parts of metal dusts, 3 parts of Nacls；
14 parts of graphite powders, 10 parts of mineral rubbers, 10 parts of resins, 10 parts of electroconductive cements, 10 parts of metal dusts, 5 parts of Nacls；
15 parts of graphite powders, 10 parts of mineral rubbers, 10 parts of resins, 10 parts of electroconductive cements, 10 parts of metal dusts, 5 parts of Nacls；
6 parts of graphite powders, 3 parts of mineral rubbers, 4 parts of resins, 5 parts of electroconductive cements, 6 parts of metal dusts, 3 parts of Nacls；
7 parts of graphite powders, 7 parts of mineral rubbers, 9 parts of resins, 8 parts of electroconductive cements, 3 parts of metal dusts, 2 parts of Nacls；Or,
9 parts of graphite powders, 2 parts of mineral rubbers, 7 parts of resins, 2 parts of electroconductive cements, 7 parts of metal dusts, 6 parts of Nacls.
The composite powder preparation is selected from the weight proportion of the water：6∶40、40∶100、30∶70、6∶100、10∶98、
22: 58,23: 82,24: 61,21: 93,25: 96,18: 88,23: 81,31: 97,19: 53,33: 72,30: 77,20: 85 or 10:
97。
The resin is natural resin；The metal dust is selected from one or more in following powder：Argentum powder, copper powder,
Iron powder, stainless steel powder, glass putty and zinc powder.
A kind of preparation method for changing resist, it is characterised in that include：By the raw material of following weight parts：5-15 part graphite powders,
1-10 part mineral rubbers, 1-10 part resins, 1-10 part electroconductive cements, 1-10 part metal dusts, 1-6 part Nacls, mixing, are prepared into
To conductive composite powder preparation.
The preparation method also includes：Weight and water by the composite powder preparation according to 40-100: 6-40
Mixing.
A kind of method for changing electric resistance of soil, it is characterised in that resist is changed using described, by the composite powder preparation
After water mixing, fill, be poured in soil；Or,
Described is changed resist filling, is poured in soil.
The soil is the soil around grounding device.
The application for changing resist in terms of electric resistance of soil and earth work is changed.
The invention provides a kind of change resist for change electric resistance of soil, it is characterised in that include being answered for conductive
Close powder formulation；The composite powder preparation includes the raw material of following weight portion：5-15 part graphite powders, 1-10 part mineral rubbers, 1-
10 parts of resins, 1-10 part electroconductive cements, 1-10 part metal dusts, 1-6 part Nacls；Carrying out described change electric resistance of soil
When, the resist that changes also includes water, and the water and the weight proportion of the composite powder preparation are 40-100: 6-40.
The resist that changes of the present invention can only including the composite powder preparation, or the composite powder preparation and water
Mixture；It is described to change the form that resist is preferably composite powder preparation during depositing as product, transporting；And
Using it is described change resist soil carried out changing resistance when, the resist that changes can directly be filled in the form of composite powder preparation, irrigated
In soil, or the semi-liquid form obtained after composite powder preparation mixes with water, preferably semi-liquid form changes resistance
Agent, because, as shown in figure 1, semi-liquid form changes in the flowable gap for slowly entering soil of resist or fills to ground connection
In space between device and soil, gradually natural sedimentation and the solidification in flow process, so as to form similar jelly state
The conductive network of the tree root shape that colloidal substance is constituted, substantially increases the conductive area and volume of soil, and then improves soil
Conductive capability, changes soil resistivity.
Change in resist product what arbitrary specific embodiment of the invention was provided, it is right that above-mentioned each raw material components can take its
Any value in above-mentioned each numerical range answered, specifically, the components by weight percent of graphite powder can be 5,6,7,8,9 ...,
13rd, 14 or 15 parts；The components by weight percent of mineral rubber can be 1,2,3 ..., 7,8,9 or 10 parts；The components by weight percent of resin can be with
1st, 2,3 ..., 7,8,9 or 10 parts；The components by weight percent of electroconductive cement can be 1,2,3 ..., 7,8,9 or 10 parts；Metal
The components by weight percent of powder can be 1,2,3 ..., 7,8,9 or 10 parts；The components by weight percent of Nacl can be 1,2,3,4,5,
Or 6 parts.Each raw material of each weight portion corresponding to any one group in above-mentioned these numerical points is selected, the resist that changes obtained by mixing can
Realize that the present invention changes the purpose of electric resistance of soil, and reach the effect for effectively improving soil conductivity ability, improving soil resistivity.
Meanwhile, the weight portion consumption of certain or certain several raw material suitably can be adjusted in above-mentioned numerical range according to soil type,
For example, where gravel is more, can in right amount improve the usage amount of mineral rubber and metal dust to improve the solidification for changing resist
Property and conductive capability.In the region of clayed soil, can in right amount increase the consumption of graphite powder, electroconductive cement realizing conductive energy
Enhancing of power etc..
In some specific embodiments of the invention, above-mentioned each raw material components are described below：
Graphite powder：Matter is soft, black gray expandable；There is greasy feeling, paper can be polluted.Hardness is 1~2, vertically with impurity
Increasing its hardness can increase to 3~5.Proportion is 1.9~2.3.Under the conditions of starvation, its fusing point is most more than 3000 DEG C
One of mineral of heatproof.The chemical property of graphite powder is more stable under room temperature, water insoluble, diluted acid, diluted alkaline and organic solvent；Material
Material has high temperature resistant electric conductivity, can do refractory material, and conductive material, wear-resisting lubriation material can pass through commercially available.Therefore stone
The change effect that in resist product act primarily as conduction of the powdered ink in the present invention.
Mineral rubber：It is a kind of natural adhesive, can is clay, organic silica gel, high clay gel, can be obtained by commercially available
.Mineral rubber plays solidification in the present invention changes resist product.
Resin：Scope is softened or melted after typically referring to be heated, there is liquidity preference, room temperature during softening under external force
Under be solid-state, semisolid, sometimes can also be the organic polymer of liquid.In a broad aspect, can be former as plastic processing
Any macromolecular compound of material is referred to as resin.And resin typically have natural resin and Albertol point, natural resin
It is mainly derived from plant and oozes (secrete) the amorphous semi-solid or solid organic matters for going out thing.Feature is to receive temperature time variance soft, fusible,
There is liquidity preference under stress, it is general water insoluble, and alcohol, ether, ketone and other organic solvents can be dissolved in.Resin types are numerous
It is many, by sources divide, from the resin of plant, mainly there are Colophonium, lacquer, succinum and saqima resin etc.；From the tree of animal person
Fat, mainly there is Lac etc..The present invention from the angle of environmental protection, preferred natural resin, and natural resin role be water conservation with
Solidification.
Electroconductive cement can be the electroconductive cement product of commercialization, and the main component of general electroconductive cement includes：Steel is fine
Dimension, slag, graphite, carbon fiber, carbonaceous aggregate；
Nacl refers to crude salt, and crude salt has dividing for lake salt, well salt and sea salt；
Metal dust includes single metal dust, alloy powder and some the infusible compound powder with metalline
End, is the main raw material(s) of powder metallurgy.The metal dust preferred size changed used in resist product of the present invention is less than 1mm's
Metallic particles group, can be argentum powder, copper powder, iron powder, stainless steel powder, glass putty, zinc powder etc., or combinations thereof.
Other embodiments of the invention also provide a kind of preparation method for changing resist, including：By the raw material of following weight parts：
5-15 part graphite powders, 1-10 part mineral rubbers, 1-10 part resins, 1-10 part electroconductive cements, 1-10 part metal dusts, the industry of 1-6 parts
Salt, mixing prepares the composite powder preparation of conduction.In fact, the resist product that changes of the present invention is being preserved as commodity, transported
During defeated, sale all in the form of above-mentioned composite powder preparation, because powder is easy to preserve conveying, is unlikely to deteriorate,
Also, when in use, the soil for changing change resistance required for resist can also be directly applied to above-mentioned powder type of the invention
In earth.
In preparation method further embodiment, also include：By the composite powder preparation according to 6-40: 40-100
Weight proportion mixes with water.After above-mentioned composite powder preparation adds water, form semi-liquid form changes resist, especially when in use,
Changing semi-liquid form resist filling, being poured in soil, it is understood along the thin seam and space sluggish flow in soil, and by
Gradually solidify, be finally frozen into g., jelly-like material, the conducting wire network of complicated tree root shape is formed, as shown in figure 1, can have
Effect increase conductive area and volume, so as to improve the conductive capability of place soil region, change its resistivity.
On the other hand, some embodiments of the present invention also provide a kind of method of change electric resistance of soil, including：To weigh as follows
The raw material of amount part：5-15 part graphite powders, 1-10 part mineral rubbers, 1-10 part resins, 1-10 part electroconductive cements, 1-10 part metal powders
End, 1-6 part Nacls, after mixing, obtain composite powder preparation, and by composite powder preparation filling, perfusion and/or point are sprinkling upon
In soil.
In the further preferred scheme of above-described embodiment, after obtaining above-mentioned composite powder preparation, by 16-48 weight portions
Composite powder preparation and 33-100 weight portions water mix after, then carry out the filling, perfusion and/or divide to spread.Similarly, exist
When changing resist product, both can directly be applied in powder form, it is also possible to entrance is irrigated after adding water using the present invention
In soil, the latter's effect more preferably, also, prepare by many components of resist product system that change of the present invention, can according to site environment situation,
The weight portion of Extemporaneous each component in each self-corresponding numerical range of said components, with the conductive effect required for flexibly realizing
Really.For example：Where gravel is more, can in right amount increase mineral rubber and conductive metal powder to improve its coagulability and conduction
Ability.Can in right amount increase the consumption of graphite powder, electroconductive cement realizing the enhancing etc. of conductive capability in the region of clayed soil
Deng.
Meanwhile, the present invention's changes penetrating power of the resist according to it in soil and can be divided into super strong type：Permeable depth reaches
To more than 3 meters, high-strength：Permeable depth reaches more than 2 meters, middle strong type：Permeable depth reaches more than 1 meter.Can be according to not
With soil environment and change resistance demand, select three kinds of osmosis types changes resist, can obtain good improvement soil resistivity
Effect.
In the embodiment of said method, the soil is the soil around grounding device.Change resist and be used in mostly and bury
In entering the soil environment of grounding device, preferably to lift earthing effect；Can certainly be gone out according to the specific demand of this area
In the purpose for changing electric resistance of soil, the present invention's changes resist product used in some ungrounded soil.
The present invention be also claimed it is described change application of the resist in terms of electric resistance of soil and earth work is changed, including
Improve including earthing effect, it is any for the behavior that change resist product of the purpose using the present invention for changing electric resistance of soil, fall
Enter the scope that the present invention is claimed.
What the present invention was provided changes resist, due to its distinctive mobility and consolidation, can greatly reduce in earth work
Excavated volume to soil.Jing is tested, and the resistance-reducing efficiency for changing resist of the present invention is tens of to hundreds times, or even can be reached thousands of
Times, and it is 1 to 3 meter to change the depth that resist arrived inside soil, water holding capacity maintained 70%-90% in 10 to 30 days.
The preparation of the present invention all adopts natural minerals, and soil and environment are not polluted.Add a small amount of solidification material in preparation,
Therefore, can ensure that preparation is stored in for a long time in soil and keeps long-acting conductive capability after certain hour infiltration.The present invention's
Change the soil environment that resist can be suitable for around different grounding device, can be very good grit soil, the sandy soil in soil
Soil, backfill soil adjustment change to the ground connection conduction state for being adapted to grounding requirement and resistance, so as to be formed and protective grounding net
Network normal safe operation all the year round.Also, it can be very good to be maintained between the gap of soil, gravel and rock, with effectively
Expand the conductive extensions around grounding body, so as to fully lightning current be released among the earth in thunder and lightning temporarily.Meanwhile, it
With preferable coagulability, it is not easy to washed away by rainwater so as to long-time is able in soil and is retained.In addition, it also has well
Water retention property.It all adopts natural minerals, and for soil and crops, plant does not have any pollution.
Description of the drawings
Fig. 1 be the present invention change resist be applied to change electric resistance of soil when process schematic.Numeral mark in figure point
Do not represent：1- changes resist；2- earthing poles；3- earthing modules.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, but is not intended to limit the model of the present invention
Enclose.If no special instructions, the operation used in following embodiments is conventional method, and the consumptive material for being adopted can be obtained with commercially available
.
No. 1-18 of the present invention of embodiment 1-18. changes resist and its application effect
Embodiment 1-18 provides various Ju Ti Pei Fangs of the conductive anti-corrosion coating in the scope of the present invention, such as following table
Shown in 1, in table, each raw material components, the composite powder preparation of each raw material components composition and water are all by weight.
In embodiment all of the above, the applying step for changing resist includes：The soil region to be tested is selected, is determined
The electric resistance of soil in the region；After above-mentioned each raw material, each component are mixed by corresponding weight, irrigate to above-mentioned soil area
Domain, after 24 hours, determines again electric resistance of soil；
The performance test methods for changing resist are as follows：
Using the present invention when changing resist and resistance is carried out to soil change, the resistivity of soil is surveyed according to " four-electrode method " method
, " forward and backward " the representative correspondence soil in table 1 is applying the soil resistivity for changing and being measured respectively before and after resist of the invention；From number
Value is as can be seen that change before resistance, the resistivity of each soil is the Ω of 2000 Ω to 4000；Application of No. 1-18 and change resist carries out changing resistance
Afterwards, the resistivity of each soil is down to the Ω of 30 Ω to 3.6, and this explanation resist that changes of the present invention can extremely significantly decrease soil
Resistivity, the conductive capability for making soil effectively lifts hundreds times, or even thousands of times.
The infiltration time in upper table is measured according to the multi-direction humidometer statistical method of segmented multipole, it can be seen that this
It is bright to change the time that resist penetrated in all kinds of soil and be：0~24 hour, this explanation present invention's changed resist good fluidity, completely
The time for penetrating into soil is moderate, less than setting time, it is ensured that fully penetrate into before curing in soil, makes what is applied to change resistance
Agent is utilized completely.
As can be seen from the above table, the of the invention setting time for changing resist product 24~48 hours, illustrates of the invention changing
There is resist the sufficient time to penetrate into soil, so as to ensure that the depth for changing resist infiltration soil reaches 1 meter to 3 meters, it is ensured that change resistance
The volume and area of soil is goed deep in agent, so as to ensure the present invention change resist play its it is due drop resistance change resistance effect, effectively carry
Rise soil conductivity ability.
Change the test of the water holding capacity of resist to the present invention, using moisture tester method for rapidly testing.Test result table
Bright, the present invention changes the water holding capacity of resist and is：In 10 days (240 hours), change the conductive network of the fruit jelly form of resist formation
Moisture is 70%-90%；The moisture of (720 hours) is 70%-80% in 30 days.Water holding capacity is that the present invention changes resistance
Agent ensures an important performance indications of resistance reducing effect, is changing after resist solidifies and to form g., jelly-like material, fruit jelly body water content
Height can affect to change the conductive capability of resist, in general, water content is higher, and conductive capability is stronger；Also, water holding capacity is also
Determine the long duration for changing resist changes resistance effect, for example, in Arid Area, changes after resist is poured, the water in jelly body
Branch gradually evaporates over time, and the water holding capacity for changing resist of the present invention ensure that, even if in dry sandy soil
In, within the time of 1 month, moisture can also maintain more than 70%.
Embodiment 19, the resist that changes of the employing present invention carry out changing resistance to soil
The present embodiment provides a kind of method for changing electric resistance of soil, as shown in figure 1, comprising the steps：
Trench is dug；Grounding device is additionally arranged；According to soil types, select a certain kind in embodiment 1-18 to change resist and match somebody with somebody
Side, whole raw materials are mixed, and obtain composite powder preparation, and by composite powder preparation filling, perfusion and/or point are sprinkling upon
In soil；Soil is backfilled after 24 hours；The grounding device can be earthing pole 2 and/or earthing module 3.
Or after composite powder preparation is obtained, by the above-mentioned composite powder preparation of 6-40 weight portions and 40-100 weight portions
Water mix after, then carry out the filling, perfusion and/or divide spread, soil is finally backfilled again.
Filling changes the soil after resist 1, can be between grounding device and soil resist 1 after 24-48 hours, is changed
Space, and/or, soil carefully gradually infiltration, flowing and slow solidification in seam and space form dispersed as shown in Figure 1 or tree
The complicated conductive path of root shape or network, considerably increase the conductive area and volume of soil, so as to effectively reduce soil
The resistivity of earth, improves the conductive capability of soil.
In all of embodiment of the invention, the concrete composition of each raw material is described below：
Graphite powder：Matter is soft, black gray expandable；There is greasy feeling, paper can be polluted.Hardness is 1~2, vertically with impurity
Increasing its hardness can increase to 3~5.Proportion is 1.9~2.3.Under the conditions of starvation, its fusing point is most more than 3000 DEG C
One of mineral of heatproof.The chemical property of graphite powder is more stable under room temperature, water insoluble, diluted acid, diluted alkaline and organic solvent；Material
Material has high temperature resistant electric conductivity, can do refractory material, and conductive material, wear-resisting lubriation material can pass through commercially available.Therefore stone
The change effect that in resist product act primarily as conduction of the powdered ink in the present invention.
Mineral rubber：It is a kind of natural adhesive, can is clay, organic silica gel, high clay gel, can be obtained by commercially available
.Mineral rubber plays solidification in the present invention changes resist product.
Resin：It is mainly derived from plant and oozes (secrete) the amorphous semi-solid or solid organic matters for going out thing.When feature is to be heated
Soften, it is fusible, there is liquidity preference under stress, it is general water insoluble, and alcohol, ether, ketone can be dissolved in and other are organic molten
Agent.Resin types are various, by sources divide, and from the resin of plant, mainly there is Colophonium, lacquer, succinum and saqima resin etc.；Source
In the resin of animal person, mainly there is Lac etc..Resin role is water conservation and solidification in the present invention.
Electroconductive cement can be the electroconductive cement product of commercialization, and the main component of general electroconductive cement includes：Steel is fine
Dimension, slag, graphite, carbon fiber, carbonaceous aggregate.
Nacl refers to crude salt, and crude salt has dividing for lake salt, well salt and sea salt.
Metal dust includes single metal dust, alloy powder and some the infusible compound powder with metalline
End, is the main raw material(s) of powder metallurgy.The metal dust preferred size changed used in resist product of the present invention is less than 1mm's
Metallic particles group, can be argentum powder, copper powder, iron powder, stainless steel powder, glass putty, zinc powder etc., or combinations thereof.
Claims (10)
1. be used to changing electric resistance of soil changes resist, it is characterised in that include for conductive composite powder preparation；
The composite powder preparation includes the raw material of following weight portion：5-15 part graphite powders, 1-10 part mineral rubbers, 1-10 part trees
Fat, 1-10 part electroconductive cements, 1-10 part metal dusts, 1-6 part Nacls.
2. it is according to claim 1 to change resist, it is characterised in that also including water；
The water is 40-100: 6-40 with the weight of the composite powder preparation.
3. it is according to claim 1 and 2 to change resist, it is characterised in that the composite powder preparation is selected from following weight parts
Composition of raw materials：
5 parts of graphite powders, 1 part of mineral rubber, 1 part of resin, 1 part of electroconductive cement, 1 part of metal dust, 1 part of Nacl；
15 parts of graphite powders, 10 parts of mineral rubbers, 10 parts of resins, 10 parts of electroconductive cements, 10 parts of metal dusts, 6 parts of Nacls；
10 parts of graphite powders, 5 parts of mineral rubbers, 5 parts of resins, 5 parts of electroconductive cements, 5 parts of metal dusts, 3 parts of Nacls；
5 parts of graphite powders, 10 parts of mineral rubbers, 1 part of resin, 10 parts of electroconductive cements, 1 part of metal dust, 1 part of Nacl；
15 parts of graphite powders, 1 part of mineral rubber, 10 parts of resins, 10 parts of electroconductive cements, 1 part of metal dust, 6 parts of Nacls；
6 parts of graphite powders, 2 parts of mineral rubbers, 2 parts of resins, 2 parts of electroconductive cements, 2 parts of metal dusts, 2 parts of Nacls；
7 parts of graphite powders, 3 parts of mineral rubbers, 3 parts of resins, 3 parts of electroconductive cements, 3 parts of metal dusts, 3 parts of Nacls；
8 parts of graphite powders, 4 parts of mineral rubbers, 4 parts of resins, 4 parts of electroconductive cements, 4 parts of metal dusts, 4 parts of Nacls；
9 parts of graphite powders, 5 parts of mineral rubbers, 5 parts of resins, 5 parts of electroconductive cements, 5 parts of metal dusts, 5 parts of Nacls；
10 parts of graphite powders, 6 parts of mineral rubbers, 6 parts of resins, 6 parts of electroconductive cements, 6 parts of metal dusts, 6 parts of Nacls；
11 parts of graphite powders, 7 parts of mineral rubbers, 7 parts of resins, 7 parts of electroconductive cements, 7 parts of metal dusts, 4 parts of Nacls；
12 parts of graphite powders, 8 parts of mineral rubbers, 8 parts of resins, 8 parts of electroconductive cements, 8 parts of metal dusts, 5 parts of Nacls；
13 parts of graphite powders, 9 parts of mineral rubbers, 9 parts of resins, 9 parts of electroconductive cements, 9 parts of metal dusts, 3 parts of Nacls；
14 parts of graphite powders, 10 parts of mineral rubbers, 10 parts of resins, 10 parts of electroconductive cements, 10 parts of metal dusts, 5 parts of Nacls；
15 parts of graphite powders, 10 parts of mineral rubbers, 10 parts of resins, 10 parts of electroconductive cements, 10 parts of metal dusts, 5 parts of Nacls；
6 parts of graphite powders, 3 parts of mineral rubbers, 4 parts of resins, 5 parts of electroconductive cements, 6 parts of metal dusts, 3 parts of Nacls；
7 parts of graphite powders, 7 parts of mineral rubbers, 9 parts of resins, 8 parts of electroconductive cements, 3 parts of metal dusts, 2 parts of Nacls；Or,
9 parts of graphite powders, 2 parts of mineral rubbers, 7 parts of resins, 2 parts of electroconductive cements, 7 parts of metal dusts, 6 parts of Nacls.
4. it is according to claim 2 to change resist, it is characterised in that the weight proportion of the composite powder preparation and the water
It is selected from：6∶40、40∶100、30∶70、6∶100、10∶98、22∶58、23∶82、24∶61、21∶93、25∶96、18∶88、23∶81、
31: 97,19: 53,33: 72,30: 77,20: 85 or 10: 97.
5. resist is changed according to claim 1 or 3, it is characterised in that the resin is natural resin；
The metal dust is selected from one or more in following powder：Argentum powder, copper powder, iron powder, stainless steel powder, glass putty and zinc
Powder.
6. a kind of preparation method for changing resist, it is characterised in that include：By the raw material of following weight parts：5-15 part graphite powders, 1-
10 parts of mineral rubbers, 1-10 part resins, 1-10 part electroconductive cements, 1-10 part metal dusts, 1-6 part Nacls, mixing, prepare
Conductive composite powder preparation.
7. the preparation method for changing resist according to claim 6, it is characterised in that also include：By the composite powder system
Agent mixes according to 40-100: 6-40 weight with water.
8. it is a kind of change electric resistance of soil method, it is characterised in that change resist using described in claim 1, will it is described be combined
After powder formulation and water mixing, fill, be poured in soil；Or,
By changing resist filling, being poured in soil described in claim 2.
9. method according to claim 8, it is characterised in that the soil is the soil around grounding device.
10. claim 1-5 is arbitrary described changes application of the resist in terms of electric resistance of soil and earth work is changed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2016111693582 | 2016-12-16 | ||
| CN201611169358 | 2016-12-16 |
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| CN111259558A (en) * | 2020-01-21 | 2020-06-09 | 武汉大学 | Method for three-dimensional visualization of colloid motion distribution in unsaturated soil |
| CN112447310A (en) * | 2020-11-13 | 2021-03-05 | 广东电网有限责任公司 | Resistance reducing agent and preparation method and application thereof |
| CN113035404A (en) * | 2021-03-12 | 2021-06-25 | 广东电网有限责任公司 | Resistance reducing agent, foundation pit, preparation method and application thereof |
| CN113285250A (en) * | 2021-05-17 | 2021-08-20 | 东莞市长益光电有限公司 | Conductive grounding device and using method |
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