CN109295976A - A kind of bottom grouting system being applicable in deep well grounding electrode feed rod and grouting method - Google Patents

A kind of bottom grouting system being applicable in deep well grounding electrode feed rod and grouting method Download PDF

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Publication number
CN109295976A
CN109295976A CN201811100781.6A CN201811100781A CN109295976A CN 109295976 A CN109295976 A CN 109295976A CN 201811100781 A CN201811100781 A CN 201811100781A CN 109295976 A CN109295976 A CN 109295976A
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China
Prior art keywords
grouting
floral tube
slip casting
layer floral
feed rod
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Granted
Application number
CN201811100781.6A
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Chinese (zh)
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CN109295976B (en
Inventor
王小明
程小久
汪华安
刘东生
李海云
孙合平
颜斌
冉启华
洪艳楼
许兵
罗鸣
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Hebei Shang Shan Petroleum Machinery Co Ltd
Guangdong Kenuo Surveying Engineering Co Ltd
China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
Original Assignee
Hebei Shang Shan Petroleum Machinery Co Ltd
Guangdong Kenuo Surveying Engineering Co Ltd
China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
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Application filed by Hebei Shang Shan Petroleum Machinery Co Ltd, Guangdong Kenuo Surveying Engineering Co Ltd, China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd filed Critical Hebei Shang Shan Petroleum Machinery Co Ltd
Priority to CN201811100781.6A priority Critical patent/CN109295976B/en
Publication of CN109295976A publication Critical patent/CN109295976A/en
Application granted granted Critical
Publication of CN109295976B publication Critical patent/CN109295976B/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/58Electrically-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
    • H01R4/66Connections with the terrestrial mass, e.g. earth plate, earth pin

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The present invention relates to a kind of bottom grouting system for being applicable in deep well grounding electrode feed rod, the grouting system including bottom steel column, internal layer floral tube, outer layer floral tube, slip casting socket, check valve, plug containing centralizer, Grouting Pipe and steel sleeve composition.Check valve is opened by the pressure of the plug containing centralizer when the grouting system starts slip casting, so that steel bushing outer tube layer moisture is replenished in time to steel sleeve, prevents feed rod from causing moisture to evaporate since temperature raises when draining into ground and feed system is failed.

Description

A kind of bottom grouting system being applicable in deep well grounding electrode feed rod and grouting method
Technical field
The present invention relates to DC transmission engineering grounding technology fields, more particularly to a kind of applicable deep well grounding electrode feed rod Bottom grouting system and grouting method.
Background technique
Important component of the direct current grounding pole as DC transmission engineering, now common land earthing pole technology has level Earthing pole and two kinds of vertical grounding electrode.That there are occupied areas is larger for existing earthing pole, addressing is difficult, to pole location periphery shallow-layer ring Border influences the disadvantages of big.Deep well grounding electrode technology can effectively evade the above problem, after the completion of deep-well drilling, in order to subsequent Equipment smoothly transfers installation, needs first to transfer retaining wall steel sleeve, then carries out the decentralization of drainage feed rod, in order to increase feed Stick and formation-engaging surfaces product, accelerate diffusing efficiency, reduce feed rod corrosion rate, deep well grounding electrode diffusing section needs to fill coke Particle, in order to make coke granule quickly and be completely filled in deep-well diffusing section, need to design a kind of combinable feed rod with The bottom grouting system of steel sleeve.
Coke granule is the important component of earthing pole, in conventional horizontal grounding pole and vertical grounding electrode construction, Frequently with the mode directly filled, but deep well grounding electrode aperture is small, buried depth is big, equipment is more, can not take the mode directly filled, Therefore the mode for being considered as pile bottom grouting fill and is filled out, and pile bottom grouting is in the explorations such as petroleum, natural gas, underground heat and production practice In be widely used, but be chiefly used in well shaft fixing technology, there are bigger differences with deep well grounding electrode coke fill process.
There is no the working procedures and electrical equipment installation requirement that consider deep well grounding electrode for existing bottom grouting equipment, Gu Well and unidirectional grout technique and deep well grounding electrode coke fill process need to have feedback in considering deep-well there are bigger difference In the case where torch, coke slurries can be carried out can be complete in diffusing section after the slip casting of bottom and quickly to fill out by designing one kind The grouting equipment filled installs deep well grounding electrode, breaks through engineering roadblock and is of great significance.
Summary of the invention
Based on this, the object of the present invention is to provide a kind of suitable for deep well grounding electrode feed rod, coke can be starched Liquid carries out the grouting system that can completely and quickly fill in diffusing section after the slip casting of bottom.
A kind of bottom grouting system being applicable in deep well grounding electrode feed rod, comprising:
Bottom steel column;
Internal layer floral tube, one end and the top of the bottom steel column are affixed;
Outer layer floral tube is set in outside internal layer floral tube, and one end and the bottom steel column are affixed;
Slip casting socket, it is affixed with the other end of the internal layer floral tube and outer layer floral tube, it offers and the internal layer floral tube The grouting port of connection;
Check valve is arranged in the slip casting socket, and in no grouting pressure, the head of the check valve resists institute State the grouting port of slip casting socket;It under grouting pressure, contracts under the head of the check valve, slurries can pass through check valve;
Plug containing centralizer, when slip casting, one end is inserted into the grouting port of the slip casting socket and resists the check valve;
Grouting Pipe is docked with the other end of the plug containing centralizer;
Steel sleeve is set in outside the plug containing centralizer and Grouting Pipe, and one end and the slip casting socket are affixed.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, in the slip casting socket Portion opens up fluted, and the check valve is arranged in the groove, and when slip casting, one end insertion of the plug containing centralizer is described recessed Slot simultaneously resists the check valve.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, the outer layer floral tube with The diameter of the steel sleeve is equal.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, the internal layer floral tube Diameter is not more than the half of outer layer floral tube diameter, while being not less than a quarter of outer layer floral tube diameter.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, the outer layer floral tube and The equal length of internal layer floral tube.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, the outer layer floral tube and The coaxial arrangement of internal layer floral tube.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, the outer layer floral tube and The tube wall of internal layer floral tube offers several through-holes.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, the outer layer floral tube and One end of internal layer floral tube and the bottom steel column weld, and the other end and the slip casting socket weld.
As the further improvement of the above-mentioned bottom grouting system for being applicable in deep well grounding electrode feed rod, the Grouting Pipe is flower Pipe, connect with feed rod.
In addition, the present invention also includes a kind of grouting method for being applicable in deep well grounding electrode feed rod, comprising the following steps:
Carry out deep-well drilling;
Steel sleeve is connect with bottom equipment, transfers bottom equipment and steel sleeve into deep-well, the bottom equipment includes Bottom steel column, internal layer floral tube, outer layer floral tube, slip casting socket and check valve, wherein the outer layer floral tube is set in internal layer floral tube Outside, one end and bottom steel column of the internal layer floral tube and outer layer floral tube are affixed, and the other end and slip casting socket are affixed, the check valve It is arranged in slip casting socket, the steel sleeve and slip casting socket are affixed;
Grouting equipment is transferred into the steel sleeve, the grouting equipment is docked with the slip casting socket, is then infused Slurry, the check valve are opened under grouting pressure, fill slurries to the borehole wall and steel sleeve across internal layer floral tube and outer layer floral tube Between tube wall, stop slip casting, the closed check valve after slip casting;
Extract the grouting equipment out;
Feed rod grouting equipment is transferred into the steel sleeve, the feed rod grouting equipment includes the feed sequentially connected Stick, Grouting Pipe and plug containing centralizer, wherein the Grouting Pipe is grouting tube;Described in one end insertion of the plug containing centralizer Then slip casting socket carries out slip casting;The check valve is opened under grouting pressure, makes slurries from Grouting Pipe and plug containing centralizer It pumps out, fills between feed rod and steel sleeve.
Compared with the prior art, the bottom grouting system for being applicable in deep well grounding electrode feed rod and method of the present invention be extremely It has the following technical effect that less
1, check valve is opened by the pressure of the plug containing centralizer when the grouting system starts slip casting, so that outside steel sleeve Layer moisture is replenished in time to steel sleeve, prevents feed rod from causing moisture to evaporate since temperature raises when draining into ground and makes Feed system failure.
2, the grouting system is recycled multiple slip casting, guarantees the success of coke liquid grout.
3, the grouting system uses bottom slip casting, and the coke liquid density of slip casting can be used slightly larger than the water in deep-well Substitute mode carries out slip casting, and grouting amount and slip casting time are controllable, can the final coke liquid depth of cracking closure of accurate judgement.
4, slip casting is controlled using check valve, is opened under grouting pressure effect when slip casting starts in check valve, slip casting is complete Bi Hou, check valve are automatically closed, and substep slip casting and can not interfere with each other, and the time interval of slip casting twice is unlimited, electrically set to be other Standby installation is found time.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the bottom grouting system of the present invention for being applicable in deep well grounding electrode feed rod;
Fig. 2 is the flow chart of the grouting method of the present invention for being applicable in deep well grounding electrode feed rod.
Specific embodiment
It, can will be after coke slurries carry out bottom slip casting the present invention provides a kind of suitable for deep well grounding electrode feed rod The grouting system that can completely and be quickly filled in diffusing section.
Attached drawing 1 is please referred to, Fig. 1 shows that the present invention is applicable in a reality of the bottom grouting system of deep well grounding electrode feed rod Apply example.However, the present invention can be presented as many different forms, and it should not be construed as being limited to specific reality presented herein Apply example.
Unless otherwise defined, otherwise, term (including technical and scientific terms) used herein is interpreted as With the identical meaning of the meaning that is generally understood with the technical staff in field belonging to the present invention.Also, it is to be understood that Term used herein be interpreted as having with the consistent meaning of meaning in this specification and related fields, and do not answer It is explained by ideal or excessively formal meaning, unless being clearly specified that herein.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
As shown in FIG. 1, FIG. 1 is the structural representations of the bottom grouting system of the present invention for being applicable in deep well grounding electrode feed rod Figure.
A kind of bottom grouting system being applicable in deep well grounding electrode feed rod includes bottom steel column 1, internal layer floral tube 2, outer layer flower The grouting system that pipe 3, slip casting socket 4, check valve 5, plug containing centralizer 6, Grouting Pipe 7 and steel sleeve 8 form, in deep-well drilling After the completion, it will be put in shaft bottom under the grouting system, then carries out slip casting, the plug containing centralizer 6 resists check valve 5, makes Obtaining check valve 5, lower contracting, check valve 5 are opened under stress, and coke liquid is inserted by steel sleeve 8 and then from Grouting Pipe 7 and containing centralizer First 6 pump out, and complete the slip casing by pressure of coke liquid between feed rod and steel sleeve, after the completion of slip casting, plug containing centralizer 6, Grouting Pipe 7 And steel sleeve 8 stays in deep-well.
The present embodiment is applicable in individually below each component part of the bottom grouting system of deep well grounding electrode feed rod into Row detailed description.
The bottom steel column 1 is embedded in deep-well bottom as the pedestal of the grouting system to keep slip casting not to be blocked.? In the present embodiment, the length of the bottom steel column 1 is not less than 0.5m.
The internal layer floral tube 2 also functions to filtration, one end and the bottom for the slurries of Grouting Pipe 7 to be discharged The top of steel column 1 is affixed.
The outer layer floral tube 3 also functions to filtration, is set in internal layer floral tube for the slurries of Grouting Pipe 7 to be discharged Outside, one end and the bottom steel column 1 are affixed.
Specifically, the outer layer floral tube 3 is made of steel sleeve 8, i.e., its diameter is identical as the steel sleeve 8, length Portion is less than 4m.The diameter of the internal layer floral tube 2 is not more than the half of 3 diameter of outer layer floral tube, while being not less than outer layer floral tube 3 The a quarter of diameter.The equal length of the outer layer floral tube 3 and internal layer floral tube 2, and be coaxially disposed.In addition, the outer layer flower The tube wall of pipe 3 and internal layer floral tube 2 offers several through-holes, which is not less than 1cm, and each layer is no less than 3 holes, opens Pitch of holes is not more than 30cm.The internal layer floral tube 2 and outer layer floral tube 3 are welded and fixed with the bottom steel column 1.
The slip casting socket 4, undertaking effect, for fixing the check valve 5 and plug containing centralizer 5, and connection Inside and outside layer steel pipe and steel sleeve 8.The other end of the slip casting socket 4 and the internal layer floral tube 2 and outer layer floral tube 3 is affixed, opens Equipped with the grouting port being connected to the internal layer floral tube 2.Specifically, the diameter of the slip casting socket 4 is identical as steel sleeve 8, and its Middle part open up it is fluted, groove overall length be not less than 0.4m.
The check valve 5 flows to internal layer floral tube 2 from Grouting Pipe 7 for preventing or discharging slurries, is arranged in the slip casting In socket 4, in no grouting pressure, the head of the check valve 5 resists the grouting port of the slip casting socket 4;In slip casting It under pressure, contracts under the head of the check valve 5, slurries can pass through check valve 5.
The plug containing centralizer 6, has centering, so that Grouting Pipe 7 is directed at grouting port and fixation, is also used for unidirectional Valve 5 applies pressure to realize valve opening, and when slip casting, one end is inserted into the grouting port of the slip casting socket 4 and is resisted described unidirectional Valve 5 makes steel sleeve is inside and outside to form the passage of water, there is enough stratum water source supplement inside pipe casing moisture evaporations when draining into ground Amount.
The Grouting Pipe 7, is used for slip casting, and one end is docked with the other end of the plug containing centralizer 6.Specifically, institute Stating Grouting Pipe 7 is floral tube, and length is not less than 2m, and open pore size and outer layer floral tube 3 are consistent.The Grouting Pipe 7 is connect with feed rod, pressure When power slip casting, coke liquid carries out base pressure slip casting by the Grouting Pipe 7 and plug containing centralizer 6 of feed club head, and slip casting is complete It is not extracted after finishing, a part as feed system is stayed in well.
The steel sleeve 8 is set in the plug containing centralizer 6 for protection electrical equipment and the component of firm drilling Outside Grouting Pipe 7, one end and the slip casting socket 4 are affixed.
Working principle: after the completion of deep-well drilling, first by bottom steel column 1, internal layer floral tube 2, outer layer floral tube 3, slip casting plug 4, it is put in shaft bottom under after the completion of check valve 5 is connected with steel sleeve, is inserted into a grouting equipment to the drilling borehole wall and steel sleeve pipe Coke liquid is filled between wall, is stopped slip casting after coke liquid grout, the grouting equipment is then extracted, then by feed rod, slip casting Pipe 7 and the assembling of plug containing centralizer, transfer in steel sleeve 8 and connect with slip casting socket 4, finally carry out slip casting, complete feed rod With the slip casing by pressure of 8 coke liquid of steel sleeve, after the completion of slip casting, plug containing centralizer 6, Grouting Pipe 7 and steel sleeve 8 stay in depth A part in well, as deep well grounding electrode.
As shown in Fig. 2, Fig. 2 is the flow chart of the grouting method of the present invention for being applicable in deep well grounding electrode feed rod.In addition, The present invention also includes a kind of grouting method for being applicable in deep well grounding electrode feed rod, comprising the following steps:
Step 1: carrying out deep-well drilling;
Step 2: steel sleeve being connect with bottom equipment, transfers bottom equipment into deep-well, the bottom equipment includes bottom Portion's steel column 1, internal layer floral tube 2, outer layer floral tube 3, slip casting socket 4 and check valve 5, wherein the outer layer floral tube 3 is set in internal layer flower Outside pipe 2, one end and bottom steel column 1 of the internal layer floral tube 2 and outer layer floral tube 3 are affixed, and the other end and slip casting socket 4 are affixed, institute It states check valve 5 to be arranged in slip casting socket 4, the steel sleeve 8 and slip casting socket 4 are affixed;
Step 3: decentralization grouting equipment is into the steel sleeve 8, and the grouting equipment is docked with the slip casting socket 4, so After carry out slip casting, the check valve 5 is opened under grouting pressure, and slurries is made to pass through internal layer floral tube 2 and the filling of outer layer floral tube 3 to well Between 8 tube wall of wall and steel sleeve, stop slip casting after slip casting, the check valve 5 is closed;
Step 4: extracting the grouting equipment out;
Step 5: for decentralization feed rod grouting equipment into the steel sleeve 8, the feed rod grouting equipment includes sequentially connecting Feed rod, Grouting Pipe 7 and the plug containing centralizer 6 connect, wherein the Grouting Pipe 7 is grouting tube;Plug containing centralizer 6 The slip casting socket 4 is inserted into one end, then carries out slip casting;The check valve 5 is opened under grouting pressure, makes slurries from Grouting Pipe 7 and plug containing centralizer 6 pump out, fill between feed rod and steel sleeve 8.
After slip casting, the plug containing centralizer 6 and Grouting Pipe 7 are stayed in deep-well.
Compared with the prior art, the bottom grouting system of the present invention for being applicable in deep well grounding electrode feed rod at least has Following technical effect:
1, check valve is opened by the pressure of the plug containing centralizer when the grouting system starts slip casting, so that outside steel sleeve Layer moisture is replenished in time to steel sleeve, prevents feed rod from causing moisture to evaporate since temperature raises when draining into ground and makes Feed system failure.
2, the grouting system is recycled multiple slip casting, guarantees the success of coke liquid grout.
3, the grouting system uses bottom slip casting, and the coke liquid density of slip casting can be used slightly larger than the water in deep-well Substitute mode carries out slip casting, and grouting amount and slip casting time are controllable, can the final coke liquid depth of cracking closure of accurate judgement.
4, slip casting is controlled using check valve, is opened under grouting pressure effect when slip casting starts in check valve, slip casting is complete Bi Hou, check valve are automatically closed, and substep slip casting and can not interfere with each other, and the time interval of slip casting twice is unlimited, electrically set to be other Standby installation is found time.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.

Claims (10)

1. a kind of bottom grouting system for being applicable in deep well grounding electrode feed rod characterized by comprising
Bottom steel column;
Internal layer floral tube, one end and the top of the bottom steel column are affixed;
Outer layer floral tube is set in outside internal layer floral tube, and one end and the bottom steel column are affixed;
Slip casting socket, it is affixed with the other end of the internal layer floral tube and outer layer floral tube, it offers and is connected to the internal layer floral tube Grouting port;
Check valve is arranged in the slip casting socket, and in no grouting pressure, the head of the check valve resists the note Starch the grouting port of socket;It under grouting pressure, contracts under the head of the check valve, slurries can pass through check valve;
Plug containing centralizer, when slip casting, one end is inserted into the grouting port of the slip casting socket and resists the check valve;
Grouting Pipe is docked with the other end of the plug containing centralizer;
Steel sleeve is set in outside the plug containing centralizer and Grouting Pipe, and one end and the slip casting socket are affixed.
2. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: the note Open up fluted in the middle part of slurry socket, the check valve is arranged in the groove, and when slip casting, one end of the plug containing centralizer is inserted Enter the groove and resists the check valve.
3. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: described outer Layer floral tube is equal with the diameter of the steel sleeve.
4. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: in described The diameter of layer floral tube is not more than the half of outer layer floral tube diameter, while being not less than a quarter of outer layer floral tube diameter.
5. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: described outer The equal length of layer floral tube and internal layer floral tube.
6. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: described outer Layer floral tube and the coaxial arrangement of internal layer floral tube.
7. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: described outer The tube wall of layer floral tube and internal layer floral tube offers several through-holes.
8. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: described outer One end and the bottom steel column of layer floral tube and internal layer floral tube are welded, and the other end and the slip casting socket weld.
9. the bottom grouting system according to claim 1 for being applicable in deep well grounding electrode feed rod, it is characterised in that: the note Slurry pipe is floral tube, is connect with feed rod.
10. a kind of grouting method for being applicable in deep well grounding electrode feed rod, which comprises the following steps:
Carry out deep-well drilling;
Steel sleeve is connect with bottom equipment, transfers bottom equipment and steel sleeve into deep-well, the bottom equipment includes bottom Steel column, internal layer floral tube, outer layer floral tube, slip casting socket and check valve, wherein the outer layer floral tube is set in outside internal layer floral tube, institute One end and the bottom steel column for stating internal layer floral tube and outer layer floral tube are affixed, and the other end and slip casting socket are affixed, the check valve setting In slip casting socket, the steel sleeve and slip casting socket are affixed;
Grouting equipment is transferred into the steel sleeve, the grouting equipment is docked with the slip casting socket, then carries out slip casting, institute Check valve is stated to open under grouting pressure, make slurries pass through internal layer floral tube and outer layer floral tube fill to the borehole wall and steel bushing tube wall it Between, stop slip casting, the closed check valve after slip casting;
Extract the grouting equipment out;
Transfer feed rod grouting equipment into the steel sleeve, the feed rod grouting equipment include the feed rod sequentially connected, Grouting Pipe and plug containing centralizer, wherein the Grouting Pipe is grouting tube;The slip casting is inserted into one end of the plug containing centralizer Then socket carries out slip casting;The check valve is opened under grouting pressure, pumps slurries from Grouting Pipe and plug containing centralizer Out, filling is between feed rod and steel sleeve.
CN201811100781.6A 2018-09-20 2018-09-20 Bottom grouting system suitable for deep well grounding electrode feed rod Active CN109295976B (en)

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CN1952466A (en) * 2005-10-11 2007-04-25 冉训 Underground gas storage well shaft and its fixing method
CN102582999A (en) * 2012-03-02 2012-07-18 冉训 Multilayer fuel gas storage well cylinder used for high-pressure underground fuel gas storage well and molding-fixing method thereof
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WO2021036608A1 (en) * 2019-08-26 2021-03-04 南方电网科学研究院有限责任公司 Deep well grounding electrode and deep well grounding electrode monitoring system

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