CN107882530B - Water conservancy construction drilling blocking rod and preparation method thereof - Google Patents

Water conservancy construction drilling blocking rod and preparation method thereof Download PDF

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Publication number
CN107882530B
CN107882530B CN201711060511.2A CN201711060511A CN107882530B CN 107882530 B CN107882530 B CN 107882530B CN 201711060511 A CN201711060511 A CN 201711060511A CN 107882530 B CN107882530 B CN 107882530B
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cement
drilling
layer
parts
parcel layer
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CN107882530A (en
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任晔平
格菁
杨建成
朱元彩
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Shandong Yellow River survey, design and Research Institute Co.,Ltd.
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SHANDONG HUANGHE SURVEY DESIGN RESEARCH INSTITUTE
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Priority to CN201911062212.1A priority patent/CN110725659B/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/06—Quartz; Sand
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/22—Glass ; Devitrified glass
    • C04B14/24—Glass ; Devitrified glass porous, e.g. foamed glass
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302—Water reducers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/50—Defoamers, air detrainers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/12—Acids or salts thereof containing halogen in the anion
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/16—Acids or salts thereof containing phosphorus in the anion, e.g. phosphates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/38—Polysaccharides or derivatives thereof
    • C04B24/383—Cellulose or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
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  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Bulkheads Adapted To Foundation Construction (AREA)
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Abstract

The invention relates to a water conservancy construction drilling hole plugging rod and a preparation method thereof, and discloses a plugging rod for plugging a deep drilling hole and sealing by better contact with the inner wall of the drilling hole and a preparation method thereof. Its characterized in that includes hood, reinforcing bar and cement parcel layer, and the hood cover is arranged reinforcing bar one in and is served, and reinforcing bar surface coating has cement parcel layer, and both ends reserve the reinforcing bar of certain length, and the one end and the hood laminating of cement parcel layer, the other end are the toper, and a plurality of rubber circles have been put along the axial cover to cement parcel layer, rubber circle inner circle is embedded in the cement parcel in situ, and the outer lane is higher than cement parcel layer surface, adjacent two cement parcel layer between the rubber circle is the inclined plane.

Description

Water conservancy construction drilling blocking rod and preparation method thereof
Technical Field
The invention discloses a water conservancy construction drill hole blocking rod and a preparation method thereof, relates to a blocking rod for blocking an orifice of a drill hole in a water conservancy construction process and a preparation method thereof, and belongs to the field of metal processing. In particular to a plugging rod for plugging a deep drilling hole and sealing by better contacting with the inner wall of the drilling hole and a preparation method thereof.
Background
At present, in the water conservancy construction process, drilling is needed to be a main mode of construction fixing and detection sampling, after construction is completed, the drilling needs to be plugged, due to the fact that the drilling depth is deep, the hole diameter is small, the problem that plugging is discontinuous and the like often occurs during plugging, plugging sealing performance is poor, currently common drilling plugging is implemented by grouting plugging, grout is injected into the drilling to enable the grout to be solidified in the drilling, due to the fact that the drilling is deep, grouting amount is difficult to control, particularly when a hole or a crack occurs around a hole wall, grouting amount is difficult to predict, time is needed for grout solidification after grouting, air is mixed inside the drilling during grout solidification, after solidification, air gaps inside the drilling are communicated, objects with plugging materials can permeate through the gaps, and finally overflow from the opening of the drilling, air bags are also used for plugging the drilling, put into the drilling with the gasbag in, then aerify the gasbag, make the gasbag inflation, carry out the shutoff to the drilling, the gasbag is changeing downthehole, along with long-term use, the condition of disappointing or damage can appear, and then can not play the effect of drilling shutoff, because the gasbag has elasticity, can have the clearance with drilling inner wall contact position, can not laminate completely, the infiltration is revealed easily to appear, the sealed poor condition of shutoff, and there is not rigidity gasbag itself, bearing behind its shutoff mainly relies on gas, when placing the gasbag in the drilling, the depths be difficult to place and target in place, the shutoff is aerifyd in the influence.
Disclosure of Invention
In order to improve the situation, the invention provides a water conservancy construction drilling hole plugging rod and a preparation method thereof, and provides a plugging rod for plugging a deep drilling hole and sealing by better contact with the inner wall of the drilling hole and a preparation method thereof.
The water conservancy construction drilling blocking rod comprises a top cap, reinforcing steel bars and a cement wrapping layer, wherein the top cap is sleeved on one end of each reinforcing steel bar, the surface of each reinforcing steel bar is wrapped with the cement wrapping layer, the reinforcing steel bars with certain lengths are reserved at two ends of each reinforcing steel bar, one end of each cement wrapping layer is attached to the top cap, the other end of each cement wrapping layer is conical, a plurality of rubber rings are axially sleeved on each cement wrapping layer, inner rings of the rubber rings are embedded in the cement wrapping layers, outer rings of the rubber rings are higher than the surface of each cement wrapping layer, and the cement wrapping layer between every two adjacent rubber rings is an inclined.
The invention discloses a use method of a water conservancy construction drilling blocking rod, which is characterized by comprising the following steps of: put into the drilling with the other end of reinforcing bar in, it uses to do the guide bar, then push down the hood through external force, promote the reinforcing bar to downthehole removal, cement parcel layer also atress gets into downthehole simultaneously, the hole is along the extension of cement parcel layer toper end, the cement parcel layer is compact and close to the drilling inner wall extrusion, and form reverse parcel extrusion to cement parcel layer, make the inclined plane that forms between drilling inner wall and the rubber circle that corresponds closely laminate, then continue to push down the hood, make in the gradual entering drilling of rubber circle, make the sealed pad that forms respectively with the drilling inner wall contact between the adjacent rubber circle, and then form the inseparable combination in the degree of depth, carry out the shutoff to drilling.
The purpose of the design of rubber circle is for cement parcel layer and drilling inner wall form the inflation laminating, dies the cement parcel layer card in the drilling, and it is sealed to laminate the cement parcel layer segmentation, prevents to reveal that the shutoff is not tight.
The invention relates to a preparation method of a water conservancy construction drilling blocking rod, which comprises the following steps:
1) cutting the reinforcing steel bars into equal lengths: 50cm-80 cm;
2) preparing cement paste to reach the used density;
the density of the cement slurry is 1.25-1.31g/cm3；
The cement paste comprises the following components in parts by mass: 80-100 parts of cement, 35-45 parts of a lightening admixture liquid silicon dioxide, 24-40 parts of expanded and vitrified micro bubbles, 10-18 parts of cellulose ether, 2-8 parts of a lace polycarboxylic acid water reducing agent, 4-8 parts of basic aluminum chloride, 3-6 parts of sodium hexametaphosphate and 1.2-2.4 parts of a defoaming agent;
preferably, each liter of the cement paste comprises 0.12-0.24g of fiber;
preferably, the liquid silica has an average particle diameter of 0.15 to 0.18 μm;
preferably, the average diameter of the expanded and vitrified micro bubbles is 0.28 to 0.32 μm, and the compressive strength reaches over 124 MPa;
further, the cellulose ether is hydroxypropyl methyl cellulose;
the defoaming agent is one of polydimethylsiloxane, polyoxypropylene glycerol ether and emulsified silicone oil;
3) pouring the proportioned cement paste into a cement paste pool, spraying the surface of the steel bar by using clear water, and hanging the steel bar on a hanging frame one by one;
4) then, descending the hanging rack to enable the reinforcing steel bars to be immersed in the cement paste, and standing for 5 min; then, lifting the hanging frame to enable the steel bars to be completely separated from the cement paste surface, standing until the cement paste surface layer is solidified to form a wrapping layer of the bottom layer, and finishing the primary slurry hanging step;
5) repeating the step 4, 20-30 times to finish the step of wrapping the cement paste, and forming a cement wrapping layer with the thickness of 5-8cm on the surface of the reinforcing steel bar;
6) when the step 4 is repeated for the last 3-5 times, sleeving a plurality of rubber rings on the surface of the cement wrapping layer, wherein the distance between the rubber rings is 8-10cm, and the diameter of the cross section of each rubber ring is 5-8 mm;
finally, the cement paste for slurry hanging is segmented at the position of the rubber ring and flows downwards under the action of gravity, so that the inclined plane of a cement paste core between two adjacent rubber rings is formed, and the inner ring of each rubber ring is wrapped and fixed;
in the cement paste wrapping process, the cement paste flows downwards under the action of gravity, so that the top of the cement wrapping layer is conical;
7) cutting off a cement wrapping layer at the bottom end of the steel bar, installing a top cap on the steel bar, performing top cap installation operation, and completing the preparation of the drilling blocking rod.
The invention also relates to a drilling rod plugging slurry hanging device which comprises a bidirectional pump, heating plates, a tray, a ceramic lining, a main box, a rubber ring, a box cover and a slurry box, wherein the tray is arranged at the bottom of the main box and forms a closed cavity with the main box, a plurality of round holes are uniformly formed in the bottom of the main box and communicated with the tray, the ceramic lining is arranged in the round holes, a plurality of groups of heating plates are arranged on the tray, the box cover is arranged on the main box, a plurality of through holes are formed in the box cover and correspond to the round holes in the main box, the rubber ring is arranged in the through holes, and the slurry box is arranged on one side of the main box and communicated with the main box through the bidirectional pump.
The invention relates to a use method of a drilling hole plugging rod slurry hanging device, which comprises the following steps: inserting the equal length reinforcing steel bar sections into the circular holes at the bottom of the main box, closing the box cover to enable the reinforcing steel bars to correspondingly penetrate through the through holes, electrifying and heating the heating plate to enable the reinforcing steel bars to expand and form close fit with the ceramic lining, putting the prepared cement into the slurry box, starting the two-way pump to pump the slurry into the main box and then contact with the surface of the reinforcing steel bars, soaking the reinforcing steel bars in the slurry for a period of time, reversely collecting the slurry by the two-way pump, pumping the slurry in the main box back into the slurry box, penetrating heat out through the reinforcing steel bars by the heating plate to enable the temperature in the main box to rise, promoting the slurry on the surface of the reinforcing steel bars to be coagulated, pumping the cement in the slurry box into the main box by the two-way pump, reciprocating for a plurality of times to form a cement coating layer on the surface of the reinforcing steel bars, finally pumping the cement on the inner side of the main, and (5) cooling and shrinking the reinforcing steel bar, and taking out the reinforcing steel bar from the ceramic lining to finish the step of coating the surface of the reinforcing steel bar with slurry.
The rubber ring is designed to form an elastic gap with the steel bar so as to discharge internal moisture and achieve the purpose.
Has the beneficial effects.
The structure is simple, and the device is convenient and practical.
And secondly, the device can be better attached to the inner wall of the drilled hole.
Thirdly, the cost is low, and the popularization is easy.
Drawings
Fig. 1 is a schematic structural diagram of a water conservancy construction drilling blocking rod.
Fig. 2 is a schematic structural diagram of a drilling plugging rod slurry hanging device.
In the attached drawings
Wherein the parts are: the concrete pump comprises a top cap (1), reinforcing steel bars (2), a cement wrapping layer (3), a rubber ring (4), a heating plate (5), a tray (6), a ceramic lining (7), a main body box (8), a rubber ring (9), a box cover (10), a slurry box (11) and a bidirectional pump (12).
The specific implementation mode is as follows:
the invention relates to a water conservancy construction drilling blocking rod and a preparation method thereof, which are realized by the following steps:
the water conservancy construction drilling blocking rod comprises a top cap (1), reinforcing steel bars (2) and cement wrapping layers (3), wherein the top cap (1) is sleeved on one end of each reinforcing steel bar (2), the cement wrapping layers (3) are wrapped on the surfaces of the reinforcing steel bars (2), reinforcing steel bars (2) with certain lengths are reserved at the two ends of each reinforcing steel bar, one end of each cement wrapping layer (3) is attached to the top cap (1), the other end of each cement wrapping layer is conical, a plurality of rubber rings (4) are axially sleeved on each cement wrapping layer (3), the inner rings of the rubber rings (4) are embedded into the cement wrapping layers (3), the outer rings of the cement wrapping layers (3) are higher than the surfaces of the cement wrapping layers (3), and the cement wrapping layers (3) between every two adjacent rubber rings (4) are inclined.
The invention discloses a use method of a water conservancy construction drilling blocking rod, which is characterized by comprising the following steps of: the other end of a steel bar (2) is placed into a drill hole and used as a guide rod, then the steel bar (2) is pushed down through a top cap (1) by external force to move into the drill hole, meanwhile, a cement wrapping layer (3) is also stressed to enter the drill hole, the inner hole is expanded along the conical end of the cement wrapping layer (3), the cement wrapping layer (3) extrudes the inner wall of the drill hole tightly and compactly, and reverse wrapping extrusion is formed on the cement wrapping layer (3), so that the inclined plane formed between the inner wall of the drill hole and the corresponding rubber ring (4) is tightly attached, then the top cap (1) is continuously pushed down to enable the rubber rings (4) to gradually enter the drill hole, a sealing gasket formed between the adjacent rubber rings (4) is respectively contacted with the inner wall of the drill hole to form tight combination in depth to plug the drill hole, the rubber ring (9) is designed to form expansion attachment between the cement wrapping layer (3) and the inner wall of the drill hole, deadly in the drilling with cement parcel layer (3) card, with cement parcel layer (3) segmentation laminating sealed, prevent to reveal that the shutoff is not tight, reach and carry out the sealed purpose of shutoff to water conservancy construction drilling.
The invention relates to a water conservancy construction drilling blocking rod and a preparation method thereof, which are characterized by comprising the following steps of:
1) cutting the reinforcing steel bar (2) into equal lengths, wherein the lengths are as follows: 60 cm;
2) a cement slurry was prepared to a density of 1.27g/cm 3.
The cement paste comprises the following components in parts by mass: 100 parts of cement, 40 parts of lightening admixture liquid silicon dioxide, 32 parts of expanded and vitrified micro bubbles, 15 parts of cellulose ether, 5 parts of lace polycarboxylic acid water reducing agent, 6 parts of basic aluminum chloride, 5 parts of sodium hexametaphosphate and 1.8 parts of defoaming agent, wherein each liter of cement paste comprises 0.18g of fiber,
3) pouring the proportioned cement paste into a cement paste pool, spraying the surface of the steel bar (2) by using clear water, and hanging the steel bar (2) on hanging racks one by one;
4) then, descending the hanging frame to enable the reinforcing steel bars (2) to be immersed in the cement paste, and standing for 5 min; then, lifting the hanging frame to enable the reinforcing steel bars (2) to completely leave the surface of the cement paste, standing until the surface layer of the cement paste is solidified to form a wrapping layer of the bottom layer, and finishing the preliminary slurry hanging step;
5) repeating the step 4 and 25 times to finish the step of wrapping cement paste, and forming a cement wrapping layer (3) with the thickness of 5-8cm on the surface of the reinforcing steel bar (2);
6) when the step is repeated for 4 to 4 times, a plurality of rubber rings (9) are sleeved on the surface of the cement wrapping layer (3), the distance between the rubber rings (4) is 9cm, and the diameter of the section of each rubber ring (4) is 7 mm;
finally, the cement paste for slurry hanging is segmented at the position of the rubber ring (4) and flows downwards under the action of gravity, so that the inclined plane of a cement paste mold core between two adjacent rubber rings (4) is formed, and the inner ring of the rubber ring (4) is wrapped and fixed;
in the cement paste wrapping process, the cement paste flows downwards under the action of gravity, so that the top of the cement wrapping layer (3) is conical;
7) cutting off a cement coating layer (3) at the bottom end of the steel bar (2), installing the top cap (1) on the steel bar (2), performing top cap (1) installation operation, and completing the preparation of the drilling blocking rod.
The invention also relates to a drilling rod plugging slurry hanging device which is characterized by consisting of a bidirectional pump (12), a heating plate (5), a tray (6), a ceramic lining (7), a main body box (8), a rubber ring (9), a box cover (10) and a slurry box (11), wherein the tray (6) is arranged at the bottom of the main body box (8), and forms a closed cavity with the main body box (8), the bottom of the main body box (8) is uniformly provided with a plurality of round holes, and is communicated with a tray (6), a ceramic lining (7) is arranged in the round hole, a plurality of groups of heating plates (5) are arranged on the tray (6), a box cover (10) is arranged on a main body box (8), a plurality of through holes are arranged on the box cover (10), and the mud box (11) is arranged at one side of the main body box (8) and is communicated with the main body box (8) through a bidirectional pump (12).
When the cement mortar filling machine is used, reinforcing steel bars (2) with equal length are respectively inserted into a round hole at the bottom of a main box (8), a box cover (10) is closed, the reinforcing steel bars (2) correspondingly penetrate out of a through hole, then a heating plate (5) is electrified and heated, the reinforcing steel bars (2) are thermally expanded and are tightly matched with a ceramic lining (7), then prepared cement is placed into a cement mortar box (11), a bidirectional pump (12) is started, the bidirectional pump (12) pumps the cement mortar into the main box (8) and is in surface contact with the reinforcing steel bars (2), after the reinforcing steel bars (2) are soaked in the cement mortar for one end, the bidirectional pump (12) reversely collects the cement mortar, the cement mortar in the main box (8) is pumped back into the cement mortar box (11), the heating plate (5) penetrates out the heat through the reinforcing steel bars (2), the temperature in the main box (8) rises, and the coagulation of the cement mortar on the surface of the reinforcing steel, then two-way pump (12) work will be the cement of mud case (11) in will pumping in main part case (8), reciprocal many times, at reinforcing bar (2) surface formation cement coating (3), will take out main part case (8) inboard cement at last, close the power for the grout on reinforcing bar (2) naturally condenses, and reinforcing bar (2) cooling shrink takes out from ceramic lining (7), the design of rubber ring (9) is for and forming elastic gap between reinforcing bar (2) to inside moisture branch is discharged, reaches reinforcing bar (2) surface and hangs the mesh of thick liquid.

Claims (5)

1. The utility model provides a water conservancy construction drilling blocking rod, includes hood, reinforcing bar and cement parcel layer, the hood cover is arranged reinforcing bar one in and is served, and reinforcing bar surface coating has cement parcel layer, and the reinforcing bar of certain length is reserved at both ends, the one end and the hood laminating of cement parcel layer, and the other end is the toper, and a plurality of rubber circles have been put along the axial cover to cement parcel layer, rubber circle inner circle is embedded in the cement parcel in situ, and the outer lane is higher than cement parcel layer surface, adjacent two cement parcel layer between the rubber circle is the inclined plane, its characterized in that: the preparation method of the blocking rod comprises the following steps:
1) cutting the reinforcing steel bars into equal lengths: 50cm-80 cm;
2) preparing cement paste to reach the used density;
3) pouring the proportioned cement paste into a cement paste pool, spraying the surface of the steel bar by using clear water, and hanging the steel bar on a hanging frame one by one;
4) then, descending the hanging rack to enable the reinforcing steel bars to be immersed in the cement paste, and standing for 5 min; then, lifting the hanging frame to enable the steel bars to be completely separated from the cement paste surface, standing until the cement paste surface layer is solidified to form a wrapping layer of the bottom layer, and finishing the primary slurry hanging step;
5) repeating the step 4, 20-30 times to finish the step of wrapping the cement paste, and forming a cement wrapping layer with the thickness of 5-8cm on the surface of the reinforcing steel bar;
6) when the step 4 is repeated for the last 3-5 times, sleeving a plurality of rubber rings on the surface of the cement wrapping layer, wherein the distance between the rubber rings is 8-10cm, and the diameter of the cross section of each rubber ring is 5-8 mm;
7) cutting off a cement coating layer at the bottom end of the steel bar, then installing a top cap on the steel bar, carrying out top cap installation operation, and completing the preparation of the drilling blocking bar;
during the use, put into the drilling with the other end of reinforcing bar in, do the guide bar usefulness, then push down the hood through external force, promote the reinforcing bar and move to downthehole, cement parcel layer also receives the power and gets into downthehole simultaneously, the hole is along the extension of cement parcel layer toper end, cement parcel layer is compact and close with the extrusion of drilling inner wall, and form reverse parcel extrusion to cement parcel layer, make the inclined plane that forms between drilling inner wall and the rubber circle that corresponds closely laminate, then continue to push down the hood, make in the gradual entering drilling of rubber circle, make the sealed pad that forms respectively with the contact of drilling inner wall between the adjacent rubber circle, and then form the inseparable combination in the degree of depth, carry out the shutoff to drilling.
2. The water conservancy construction drilling hole blocking rod according to claim 1, wherein the density of the cement slurry is 1.25-1.31g/cm3。
3. The water conservancy construction drilling hole blocking rod according to claim 1, characterized in that the cement paste comprises the following components in parts by mass: 80-100 parts of cement, 35-45 parts of a lightening admixture liquid silicon dioxide, 24-40 parts of expanded and vitrified micro bubbles, 10-18 parts of cellulose ether, 2-8 parts of a lace polycarboxylic acid water reducing agent, 4-8 parts of basic aluminum chloride, 3-6 parts of sodium hexametaphosphate and 1.2-2.4 parts of a defoaming agent.
4. The water conservancy construction drill hole stopper rod of claim 3, characterized in that the cellulose ether is hydroxypropyl methyl cellulose.
5. The water conservancy construction drilling hole blocking rod according to claim 3, wherein the defoaming agent is one of polydimethylsiloxane, polyoxypropylene glyceryl ether and silicone emulsion.
CN201711060511.2A 2017-11-02 2017-11-02 Water conservancy construction drilling blocking rod and preparation method thereof Active CN107882530B (en)

Priority Applications (2)

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