CN106120836B - The mobile holder of heavy grade dam foundation grouting and its construction method - Google Patents
The mobile holder of heavy grade dam foundation grouting and its construction method Download PDFInfo
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- CN106120836B CN106120836B CN201610692240.1A CN201610692240A CN106120836B CN 106120836 B CN106120836 B CN 106120836B CN 201610692240 A CN201610692240 A CN 201610692240A CN 106120836 B CN106120836 B CN 106120836B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/40—Foundations for dams across valleys or for dam constructions
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Abstract
The invention discloses a kind of mobile holders of heavy grade dam foundation grouting, including the platform of steel frame construction, first support, second support, third holder；Three face of platform upper is welded with that safety barrier, interval is welded with first support, second support, third holder on lower vertical direction, several planks is equipped on platform, front end both sides are welded with snap ring；First support, second support and the stepped distribution of third holder, the gradient of plane is identical as the gradient of pregrouting dam foundation where three's bottommost edge cross bar.Also disclose a kind of heavy grade dam foundation grout construction method：Preparation of construction；Divide sequence, setting-out fixed point；Holder is moved and is fixed；Drilling machine pinpoints；Drilling；Packer permeability test；Grouting；Whole hole, sealing of hole；Elementary section inspection hole inspection.Mobile supporting structure is simple, firm, convenient and practical；Construction method is simple for process, easy to spread, can flowing water work continuously, accelerate construction speed, strengthen dam bank slope consolidation and curtain mass effect.
Description
Technical field
The present invention relates to dam foundation antiseepage career fields, are in the milk mobile more particularly to a kind of heavy grade dam foundation
Frame and its construction method.
Background technology
In recent years, country advocates energetically is recycled economic development, and water resource has obtained abundant development and utilization, large quantities of big
Medium and small reservoirs are rising.It is in engineering fronts always as the dam consolidation of stabilization, antiseepage foundation stone and curtain work, and passes
The heavy grade bank slope basis of system consolidates and the used fixing bracket body supporting way of curtain construction, the difficult needs for meeting development.
Be usually located at riverbed area consolidation and curtain since topography is flat, operation is without very difficulty, but two sides side slope
When carrying out well cementing work especially on heavy grade dam foundation (bank slope), it can not be improved since topography is precipitous, mountain shape is dangerous
Working efficiency, and restricted seriously by equipment vertical drilling, traditional operational method is to make use of momentum to set up fixed full hall bearing type foot
Hand cradle platform carries out, and equipment movement (being inclined to and lateral) is just dumb since then, and the material resources such as manpower and frame body input is big,
Each frame body is molded utilization scope and is limited, and takes up an area extensively, and design and code requirement brill filling can not accurately in place, not along bank slope when dividing sequence
Disconnected built rise and will point sequence carry out, process is slow, and antiseepage quality, safe operation, to bore filling process be low.
Therefore it is urgent to provide a kind of novel heavy grade dam foundation grout construction methods to solve the above problems.
Invention content
Technical problem to be solved by the invention is to provide a kind of mobile holders of heavy grade dam foundation grouting, provide simultaneously
A kind of construction method using the mobile holder, this method is simple for process, economical and efficient.
In order to solve the above technical problems, one aspect of the present invention is：A kind of heavy grade dam foundation is provided
The mobile holder of grouting, including the platform of steel frame construction, first support, second support, third holder；Three face of platform upper is welded with
Interval is welded with first support, second support, third holder on safety barrier, lower vertical direction, is equipped on platform several
Bar plank, the front end both sides of platform are welded with snap ring；First support is rectangle steel frame construction, and second support is intermediate equipped with one
The rectangle steel frame construction of cross bar, third holder are the intermediate square steel frame construction for being equipped with X-shaped steel frame, first support, second
Holder and the stepped distribution of third holder, the gradient of plane where three's bottommost edge cross bar and pregrouting dam foundation
The gradient is identical.
In a preferred embodiment of the present invention, first support and platform are close to the distance between dam foundation side and the
Two holders are equal with the distance between third holder, keep the frame structure of the holder more firm.
In a preferred embodiment of the present invention, the steel frame construction of the holder is all made of the welding of 9cm angle steel, makes the branch
The intensity of frame can meet the needs of static and dynamic loadings with rigidity.
In a preferred embodiment of the present invention, the thickness that plank is laid on platform is 5cm, can both put the machines such as drilling machine
Tool, and can ensure that construction personnel carries out boring on platform and fill operation.
In a preferred embodiment of the present invention, it is additionally provided with tripod on platform, the drilling rod for fixing drilling machine.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of big dam foundation of heavy grade is provided
The construction method of the mobile holder of plinth grouting, comprises the following steps that：
(1) preparation of construction：The data such as the construction area hydrology, meteorology, geology and environment are collected, surveying and locating basic point is established,
Horizontal layout is carried out to construction site, makes and processes the mobile holder, hoisting equipment is installed, above-mentioned operation carries out qualification and tests
It receives；
(2) divide sequence, setting-out fixed point：According to the grouting sequence of curtain after first consolidating and first downstream, again upstream, rear intermediate row
Hole sequence carries out a point sequence to pregrouting dam foundation, requires to carry out live fixed point using total powerstation and identify according to above-mentioned point of sequence
Upstream and downstream viewing position；
(3) holder moves：It is completed by the hoisting equipment pulling mobile holder at dam crest position is arranged；
(4) holder is fixed：After the mobile holder movement in place, steel wire rope and the movement are drawn in top using fixed peg
The snap ring of holder is connected, lower part on the concrete face of dam, at the end positions of third holder bottommost edge cross bar drill anchor
Gu two anchor poles fix the mobile holder；
(5) drilling machine pinpoints：Each hole position is accurately positioned by drilling machine realization, grout hole position and the deviation for designing hole position are not more than
10cm, grouting hole depth is not less than design hole depth；
(6) it drills：Drilling machine is selected to carry out bore operation according to grouting method；
(7) packer permeability test：Packer permeability test is carried out to pilot hole or grouting experimental port, packer permeability test is using single-point method to dam
Segmentation carries out from top to bottom on basis；
(8) it is in the milk：Slurries are conveyed using mixing plant to grouting equipment be in the milk until qualification per hole section；
(9) whole hole, sealing of hole：According to stratum and groundwater condition, size performance, grouting pressure, slurries injection rate and grouting
Segment length, which integrates, determines that each grout compartment grouting terminates, and full section uses complete opening grouting method of pore sealing sealing of hole after being in the milk；
(10) elementary section inspection hole inspection：After the completion of a certain number of consolidations of one unit or curtain hole grouting task, press
Consolidation or curtain effect inspection pore pressure water inspection are carried out according to design and code requirement, can carry out down one of project after qualified covers
Lid；Grouting checks and should be carried out after grouting that inspection hole is segmented drilling, segmentation obstruction, segmentation from top to bottom using single-point method
Packer permeability test.
In a preferred embodiment of the present invention, the grouting method according to geological conditions and engine request include from upper and
Lower segmental grouting method, from bottom to top segmental grouting method, comprehensive grouting method and bore hole-top-enclosed grouting method；According to geological conditions, grouting
The difference of slurries and grouting method, including circulating grouting method, pure pressure type grouting method.
Further, in step (6), boring method should be determined according to geological conditions, grouting method and boring requirement, when
When using grouting method from top to bottom and bore hole-top-enclosed grouting method, drilling machine choice rotary drill, diamond or carbide drill
Drilling machine；When using grouting method from bottom to top, drilling machine choice rotary drill or impact rotating churn.
In a preferred embodiment of the present invention, in step (9), it is 0.5 that complete opening grouting method of pore sealing, which is with the ratio of mud,
Fresh ordinary cement slurries change thin pulp or ponding in hole, when using segmental grouting method from top to bottom and segmental grouting method from bottom to top
When, sealing of hole grouting pressure is averaged grouting pressure or 2MPa using complete opening section, when using bore hole-top-enclosed grouting method, sealing of hole grouting pressure
It is 1h that power, which uses the hole maximum grouting pressure, sealing of hole grouting time,.
In a preferred embodiment of the present invention, the construction method be suitable for 30~55 ° of the gradient, hole depth be 100m in,
Dam concrete foundation consolidation and Curtain Grouting Construction of the whole hole aperture not less than φ 56mm, mobile holder total load head less than 2t.
The beneficial effects of the invention are as follows：Mobile supporting structure of the present invention is simple, firm, convenient and practical, makes simply,
It can be fast moved on heavy grade dam foundation, realize that telephone-moving, positioning, drilling, grouting, sealing of hole are primary using the movement holder
It completes, process is fast, and quality is easy to ensure；The construction method is simple for process, easy to spread, is filled using dividing sequence to bore up and down, can
Flowing water is worked continuously, and convenient for arranging various processes, is rationally utilized labour, is accelerated construction speed, reduce construction cost, together
When also strengthen dam bank slope consolidation and curtain mass effect.
Description of the drawings
Fig. 1 is the structural schematic diagram of heavy grade dam foundation grouting of the present invention one preferred embodiment of mobile holder；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the A-A sectional views of Fig. 2；
Fig. 4 is the B-B sectional views of Fig. 2；
Fig. 5 is the C-C sectional views of Fig. 2；
Fig. 6 is the fundamental diagram of the mobile holder of heavy grade dam foundation grouting；
Fig. 7 is the flow chart of the heavy grade dam foundation grout construction method；
The label of each component is as follows in attached drawing：1, platform, 2, first support, 3, second support, 4, third holder, 5, safety
Guardrail, 6, plank, 7, tripod, 8, drilling machine, 9, snap ring, 10, steel wire rope, 11, hoist engine, 12, fixing bolt, 13, longitudinally guiding
Pulley, 14, laterally steering pulley, 15, anchor pole, 16, dam foundation, 17, dam abutment ground.
Specific implementation mode
The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
It please refers to Fig.1 and Fig. 2, the embodiment of the present invention includes：
A kind of mobile holder of heavy grade dam foundation grouting, including the platform 1 of steel frame construction, first support 2, second support
3, third holder 4.1 top of platform, three face is welded with that safety barrier 5, interval is welded with first support 2, the on lower vertical direction
Two holders 3, third holder 4, safety barrier 5 are formed by steel pipe or reinforcement welding, and several planks 6 are equipped on platform 1 (in figure
It show 5), in a preferred embodiment, the thickness that plank 6 is laid on platform 1 is 5cm, can both put the machines such as drilling machine 8
Tool, and can ensure that construction personnel carries out boring on the platform 1 and fill operation.Control hole inclined tripod 7 can be also set on platform, used
In the drilling rod of fixed drilling machine 8.The front end both sides of platform 1 are welded with snap ring 9, for mounting the steel wire rope for dragging the holder movement
10。
As shown in figure 3, first support 2 is rectangle steel frame construction, as shown in figure 4, second support 3 is intermediate horizontal equipped with one
The rectangle steel frame construction of bar, as shown in figure 5, third holder 4 is the intermediate square steel frame construction for being equipped with X-shaped steel frame, first
Holder 2, second support 3 and the 4 stepped distribution of third holder, the gradient and inoculated of plane where three's bottommost edge cross bar
The gradient for starching dam foundation 16 is identical.First support 2 is with platform 1 close to the distance between 16 side of dam foundation and second support
3 is equal with the distance between third holder 4, and such frame structure is more firm.The mobile supporting structure is simple, steelframe knot
Structure is all made of the welding of 9cm angle steel, so that the intensity of the holder can meet the needs of static and dynamic loadings with rigidity.The movement
The size of holder is depending on the needs for boring filling job area and static and dynamic loadings.
In use, the mobile holder is transferred on the bottom ramp of dam, with steel wire rope 10 and it is placed in dam abutment ground
Hoist engine 11 on 17 connects, referring to Fig. 6, one end of steel wire rope 10 is fixed on the fixing bolt 12 in dam ramp, the other end
Across the snap ring 9 of the mobile holder front end, successively by fixing bolt 12, the longitudinally guiding pulley being placed on dam abutment ground 17
13, be connected with hoist engine 11 after laterally steering pulley 14, fixing bolt 12 be fixed in such a way that I-steel, fixed pulley add concrete away from
Anchor point at 5-10 meters from dam abutment ground, longitudinally guiding pulley 13 play steady guiding steel wire rope, laterally steering pulley
14 plane steering-effectings can be used for controlling the height of steel wire rope 10, keep steel wire rope 10 parallel with the gradient of dam, and can support
The Integral Loading of the mobile holder.Start the motor of hoist engine 11, rope traction system drives the mobile holder by both
Fixed speed is up moved to the point for needing well cementing, at this time on the concrete face of dam, 4 bottommost edge of third holder cross
It with electric hand drill drill two holes at the end positions of bar, is inserted into reinforcing bar and fixes the mobile holder as anchor pole 15, then utilize brill
Itself locomotive function of machine 8 is accurately located to well cementing point, completes to bore filling operation.The mobile holder is by the big dam foundation of heavy grade
The slope cementing operations of plinth 16 become grading operation, easy to use, and each use of frame body is both needed to strictly be safeguarded, maintain,
The rope traction system safety being especially connected to, will execute according to code requirement.
The mobile supporting structure is simple, firm, convenient and practical, makes simply, can be on heavy grade dam foundation 16
Fast move and high-efficiency high-quality complete bore fill operation.
Referring to Fig. 7, the heavy grade dam foundation grout construction method based on the mobile holder, including following technique step
Suddenly：
(1) preparation of construction：
1. collect the data such as the construction area hydrology, meteorology, geology and environment, to operating personnel carry out safely, confide a technological secret,
Establish surveying and locating basic point；
2. pair construction site carries out horizontal layout：Main includes water supply, power supply system, mixing plant and corresponding cement storehouse
It builds, road traffic is answered unimpeded inside and outside field；
3, previous process acceptance(check), scene have grouting condition；Partitioned project commencement report has been provided；Profession is set
Standby, personnel, equipment be intact, in place；
4, the mobile holder, which has made, machines, and passes through security inspection；Hoisting equipment has been installed in place, and is had
Upper and lower pulling condition.
(2) divide sequence, setting-out fixed point：
1, divide sequence：According to the grouting sequence of curtain after first consolidating and first downstream, upstream, rear intermediate round sequence be to pre- again
Grouting dam foundation carries out a point sequence, ordinary circumstance, and consolidation grouting is carried out by two sequences, grout curtain by three sequences.It is made of two rounds
Curtain downstream round should first be perfused, it is rear that upstream round is perfused, divide two sequences or three sequences again per round；Single row of holes curtain should be divided into three
Sequence is in the milk.Preferably arrange that pilot hole, pilot hole are chosen in a sequence in the first filling row of curtain or main curtain hole, its spacing is preferably
16-24m, or 10% arrangement by the round number；
2, setting-out pinpoints：Require to carry out live fixed point using total powerstation according to above-mentioned point of sequence and mark upstream and downstream can apparent place
It sets；
(3) holder moves：It is completed by the hoisting equipment pulling mobile holder at dam crest position is arranged, is started every time
The mobile holder should check the unblocked object of lower channel, the intact of hoisting equipment, maintenance in place, hand over and be recorded there are special；
(4) holder is fixed：After the mobile holder movement in place, steel wire rope and the movement are drawn in top using fixed peg
The snap ring of holder is connected, lower part on the concrete face of dam, at the end positions of third holder bottommost edge cross bar drill anchor
Gu two anchor poles fix the mobile holder；
(5) drilling machine pinpoints：It is moved by drilling machine itself, rotating function realization is accurately positioned each hole position, the covering model of hole position
Enclose the platform size and extension 300mm for the mobile holder.The deviation of grout hole position and design hole position is not more than 10cm, grouting
For hole depth not less than design hole depth, actual apertures position, hole depth should have record；
(6) it drills：After the bore operation of heavy grade dam foundation is become platform operations, you can carry out normal drilling and make
Industry, the same grading operation of operating type, the wherein boring method in grout curtain hole should be wanted according to geological conditions, grouting method and drilling
Ask determining.The grouting method according to geological conditions and engine request include from top to bottom segmental grouting method, be segmented from bottom to top
Grouting method, comprehensive grouting method and bore hole-top-enclosed grouting method；According to the difference of geological conditions, be in the milk slurries and grouting method, including
Circulating grouting method, pure pressure type grouting method.When using grouting method, bore hole-top-enclosed grouting method from top to bottom, swinging is preferably used
Drilling machine and diamond or carbide drill drilling；When using grouting method from bottom to top, rotary drill or impact can be used
Rotary drill is crept into.Boring procedure should be recorded, and rock stratum, variation of lithological are met, and fallen brill, bit freezing, collapse hole, chip off-falling, returned
When the abnormal conditions such as water discoloration, dehydration, water burst, it should record in detail；
(7) packer permeability test：To pilot hole or grouting experimental port carry out packer permeability test, packer permeability test value can be used as grouting according to
According to packer permeability test pressure is generally the 80% of grouting pressure, not larger than 1Mpa, and pressure water checks that section is generally 5-6m, using list
Point method is segmented dam foundation progress from top to bottom.The corruptible stratum of performance after end-on water can be rinsed without crack, and preferably
Packer permeability test is done or not done less.Related special record should be carried out simultaneously, and has third party supervision, other station；
(8) it is in the milk：Slurries are conveyed using mixing plant to grouting equipment be in the milk until qualification per hole section；
(9) whole hole, sealing of hole：The termination condition of each grout compartment grouting should be according to stratum and groundwater condition, size performance, filling
The comprehensive determinations such as pressure, slurries injection rate and grouting segment length are starched, following principle should be met：When grout compartment is in maximum design pressure
Under, after injection rate is not more than 1L/min, continues that 30min is perfused, can terminate to be in the milk；When complex geologic conditions, groundwater velocity it is big,
When injection rate is larger, grouting pressure is relatively low, the time of Continuous Perfusion should be appropriately extended.Full section is in the milk after being in the milk using complete opening
Method of pore sealing sealing of hole should change thin pulp or ponding in hole, sealing of hole grouting pressure with the fresh ordinary cement slurries that the ratio of mud is 0.5
For：Using segmental grouting method from top to bottom and from bottom to top segmental grouting method when, can be used complete opening section be averaged grouting pressure or
2MPa；When using bore hole-top-enclosed grouting method, the hole maximum grouting pressure can be used.Sealing of hole grouting time can be 1h；
(10) elementary section inspection hole inspection：The a certain number of consolidations of one unit or curtain hole grouting task are completed and are had
After certain age, consolidation or curtain effect inspection pore pressure water inspection are carried out according to design and code requirement, can be carried out after qualified
Lower one of project covering.Wherein curtain inspection hole should arrange on the basis of analyzing construction information at following position：Curtain center
On line；The position of the complex geologic conditions such as basement rock is broken, tomography and cranny development, strong karst；The big hole section of last sequence hole injection rate
Near；Hole scattering is excessive, filling process is abnormal etc., and think through analysis of data may be on the influential position of curtain quality.It fills
Slurry checks that should terminate (grout curtain 14d, consolidation grouting 3d) in grouting carries out afterwards, and inspection hole should be segmented brill from top to bottom
Into, segmentation obstruction, segmentation packer permeability test, preferably use single-point method.
The construction method is suitable for 30~55 ° of the gradient, hole depth, and for 100m, interior, aperture is advisable with small diameter, but whole hole
Dam concrete foundation consolidation and Curtain Grouting Construction of the aperture not less than φ 56mm, mobile holder total load head less than 2t.It is applied described
In work method, well cementing facility equipment etc. is realized within the scope of heavy grade dam foundation using the mobile holder and is positioned, and is utilized
Drilling machine own rotation function realizes hole position precisely fixed point；The mobile holder, which is realized to bore using 3T hoisting equipments, fills machinery in great Po
It is slided on degree, positioning back frame body bottom carries out fixed realization safety work purpose up and down using anchor pole, top using fixed pulley；It is fixed
After point, you can a series of operation such as drilled, press water, grouting, and securely and reliably, continuous productive process is apparent；Consolidation and curtain hole
Divide sequence grouting it is unrestricted, carried out back and forth up and down using the mobile holder.
Construction method of the present invention is simple for process, easy to spread, using the movement holder realize telephone-moving, positioning, drilling,
Grouting, sealing of hole are once completed, and process is fast, and quality is easy to ensure；Using up and down divide sequence bore fill, can flowing water work continuously, be convenient for
Various processes are arranged, labour is rationally utilized, accelerates construction progress, reduce construction cost, while also strengthening dam bank slope
Consolidation and curtain mass effect.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (5)
1. the construction method of the mobile holder of heavy grade dam foundation grouting, the mobile holder of heavy grade dam foundation grouting include
Platform, first support, second support, the third holder of steel frame construction；Three face of platform upper is welded with safety barrier, lower vertical
Interval is welded with first support, second support, third holder on direction, and several planks, the front end of platform are equipped on platform
Both sides are welded with snap ring；First support is rectangle steel frame construction, and second support is the intermediate rectangle steelframe for being equipped with a cross bar
Structure, third holder are the intermediate square steel frame construction for being equipped with X-shaped steel frame, and first support, second support and third holder are in
Ladder-like distribution, the gradient of plane is identical as the gradient of pregrouting dam foundation where three's bottommost edge cross bar；First
Frame is equal with the distance between third holder with second support close to the distance between dam foundation side with platform；The holder
Steel frame construction be all made of 9cm angle steel welding；The thickness that plank is laid on platform is 5cm；Tripod is additionally provided on platform；It is described
Construction method comprises the following steps that：
（1）Preparation of construction：The construction area hydrology, meteorology, geology and environmental data are collected, surveying and locating basic point is established, to construction
Scene carries out horizontal layout, makes and processes the mobile holder, installs hoisting equipment, and above-mentioned operation carries out qualified examination；
（2）Divide sequence, setting-out fixed point：According to the grouting sequence of curtain after first consolidating and first downstream, upstream, rear intermediate round are suitable again
Ordered pair pregrouting dam foundation carries out a point sequence, requires to carry out live fixed point using total powerstation according to above-mentioned point of sequence and identify upper and lower
Swim viewing position；
（3）Holder moves：It is completed by the hoisting equipment pulling mobile holder at dam crest position is arranged；
（4）Holder is fixed：After the mobile holder movement in place, steel wire rope and the mobile holder are drawn in top using fixed peg
Snap ring be connected, lower part is on the concrete face of dam, borehole anchorage two at the end positions of third holder bottommost edge cross bar
Root anchor pole fixes the mobile holder；
（5）Drilling machine pinpoints：Each hole position is accurately positioned by drilling machine realization, grout hole position and the deviation for designing hole position are not more than
10cm, grouting hole depth is not less than design hole depth；
（6）Drilling：Drilling machine is selected to carry out bore operation according to grouting method；
（7）Packer permeability test：Packer permeability test is carried out to pilot hole or grouting experimental port, packer permeability test is using single-point method to dam foundation
Segmentation carries out from top to bottom；
（8）Grouting：Slurries are conveyed using mixing plant to grouting equipment be in the milk until qualification per hole section；
（9）Whole hole, sealing of hole：According to stratum and groundwater condition, size performance, grouting pressure, slurries injection rate and grouting segment length
Degree synthesis determines that each grout compartment grouting terminates, using complete opening grouting method of pore sealing sealing of hole after full section grouting；
（10）Elementary section inspection hole inspection：After the completion of a certain number of consolidations of one unit or curtain hole grouting task, according to setting
Meter and code requirement carry out consolidation or curtain effect inspection pore pressure water inspection, and one of project covering can be carried out down after qualified；It fills
Slurry checks and should be carried out after grouting that inspection hole is segmented drilling, segmentation obstruction, segmentation pressure water using single-point method and tries from top to bottom
It tests.
2. the construction method of the mobile holder of heavy grade dam foundation grouting according to claim 1, which is characterized in that described
Grouting method includes segmental grouting method, from bottom to top segmental grouting method, synthesis from top to bottom according to geological conditions and engine request
Grouting method and bore hole-top-enclosed grouting method；According to the difference of geological conditions, be in the milk slurries and grouting method, including circulating grouting
Method, pure pressure type grouting method.
3. the construction method of the mobile holder of heavy grade dam foundation grouting according to claim 2, which is characterized in that in step
Suddenly（6）In, when using grouting method from top to bottom and bore hole-top-enclosed grouting method, drilling machine choice rotary drill, diamond or hard
Matter alloy bit drilling machine；When using grouting method from bottom to top, drilling machine choice rotary drill or impact rotating churn.
4. the construction method of the mobile holder of heavy grade dam foundation grouting according to claim 1, which is characterized in that in step
Suddenly（9）In, complete opening grouting method of pore sealing is that the fresh ordinary cement slurries for being 0.5 with the ratio of mud change thin pulp or ponding in hole, when adopting
With segmental grouting method from top to bottom and from bottom to top segmental grouting method when, sealing of hole grouting pressure is averaged grouting pressure using complete opening section
Or 2MPa, when using bore hole-top-enclosed grouting method, sealing of hole grouting pressure is using the hole maximum grouting pressure, sealing of hole grouting time
1h。
5. the construction method of the mobile holder of heavy grade dam foundation grouting according to any one of claim 1 to 4, special
Sign is that the construction method is suitable for 30~55 ° of the gradient, hole depth is that interior, the whole holes 100m aperture is not less than φ 56mm, mobile branch
Dam concrete foundation consolidation and Curtain Grouting Construction of the frame total load head less than 2t.
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| CN107667629A (en) * | 2017-08-16 | 2018-02-09 | 河南恒睿机械制造有限公司 | A kind of high gradient slope draws walking spray shotcrete and broadcasts operation slope-climbing machine automatically |
| CN111720054B (en) * | 2020-07-03 | 2021-06-11 | 中国水利水电第四工程局有限公司 | Horizontal base of geological drilling machine for drilling consolidation grouting hole |
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| KR20130114384A (en) * | 2012-04-09 | 2013-10-17 | 주식회사 대흥미래기술 | Fundamental structure fabricating method for fixing a steel assembly |
| CN203879380U (en) * | 2014-01-27 | 2014-10-15 | 铁道第三勘察设计院集团有限公司 | Horizontal drilling machine for high pressure injection grouting of railway bed slope |
| CN104878766A (en) * | 2015-05-28 | 2015-09-02 | 南京明辉建设有限公司 | Long side slope protection concrete continuous rapid pouring and form-drawing system and construction method |
| CN204728347U (en) * | 2015-06-19 | 2015-10-28 | 中国葛洲坝集团第六工程有限公司 | High rock slope steel structure platform |
| CN105780786A (en) * | 2016-03-07 | 2016-07-20 | 三峡大学 | Screw type self-balancing operation platform for side slope construction |
| CN206143793U (en) * | 2016-08-20 | 2017-05-03 | 安徽水利开发股份有限公司 | Heavy grade dam foundation grouting moves movable support |
-
2016
- 2016-08-20 CN CN201610692240.1A patent/CN106120836B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130114384A (en) * | 2012-04-09 | 2013-10-17 | 주식회사 대흥미래기술 | Fundamental structure fabricating method for fixing a steel assembly |
| CN203879380U (en) * | 2014-01-27 | 2014-10-15 | 铁道第三勘察设计院集团有限公司 | Horizontal drilling machine for high pressure injection grouting of railway bed slope |
| CN104878766A (en) * | 2015-05-28 | 2015-09-02 | 南京明辉建设有限公司 | Long side slope protection concrete continuous rapid pouring and form-drawing system and construction method |
| CN204728347U (en) * | 2015-06-19 | 2015-10-28 | 中国葛洲坝集团第六工程有限公司 | High rock slope steel structure platform |
| CN105780786A (en) * | 2016-03-07 | 2016-07-20 | 三峡大学 | Screw type self-balancing operation platform for side slope construction |
| CN206143793U (en) * | 2016-08-20 | 2017-05-03 | 安徽水利开发股份有限公司 | Heavy grade dam foundation grouting moves movable support |
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| CN106120836A (en) | 2016-11-16 |
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