CN207032256U - Deep weathered rock formation foundation ditch water sealing structure - Google Patents
Deep weathered rock formation foundation ditch water sealing structure Download PDFInfo
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- CN207032256U CN207032256U CN201720853516.XU CN201720853516U CN207032256U CN 207032256 U CN207032256 U CN 207032256U CN 201720853516 U CN201720853516 U CN 201720853516U CN 207032256 U CN207032256 U CN 207032256U
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- foundation ditch
- sealing structure
- rock formation
- water sealing
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Abstract
It the utility model is related to the technical field of foundation ditch sealing, disclose deep weathered rock formation foundation ditch water sealing structure, the water sealing structure crosses bottom of foundation ditch and the supporting construction extended in solum including lower end, overlap supporting construction and be placed in the consolidation wall formed in solum by churning, consolidation wall bottom is connected under and, lower end extends to micro- weathered rock formation through block strongly weathered sand-rock and blocks the block wall of rock fracture；The water sealing structure forms a relatively closed space for one around foundation ditch inner side in bottom of foundation ditch, the seepage action of ground water passage thoroughly blocked in weathered rock formation and coating, so that hole bottom does not almost have hydraulic connection with the underground water outside hole, therefore, the operation of drawing water at hole bottom will not have an impact to the level of ground water outside hole, the adverse effect of foundation ditch surrounding enviroment is minimized so as to which hole bottom be drawn water, the sedimentation of building has obtained good control.
Description
Technical field
The technical field of foundation ditch sealing is the utility model is related to, especially deep weathered rock formation foundation ditch water sealing structure.
Background technology
In the design and construction of base pit engineering, it is necessary to take rational method effectively to control underground water, prevent
Groundwater infiltration foundation ditch causes seepage erosion or crater wall to cave in, and prevents underground water fluctuation from causing to endanger to foundation ditch surrounding environment
Evil, operating condition is provided for excavation of foundation pit and basic engineering construction.In numerous Groundwater Control measures, water-stop curtain is conventional
Groundwater Control measure, common foundation pit waterproof curtain have formed using high pressure jet grouting between campshed stake water-stop curtain,
Water sealing structure that diaphram wall or interlocking pile double as etc..
In actual base pit engineering implementation process, it is too thick to run into the weathered rock formation rich in Bedrock Crevice Water often,
There is water-stop curtain projected depth deficiency and do not penetrate water-bearing layer, or, although water-stop curtain projected depth meets to require, due to
Construction quality problem and cause water-stop curtain to fail, these can all cause foundation ditch bottom seep water and influence the construction operation at foundation ditch bottom,
Severe patient can cause to cheat underflow soil, failure by piping, so as to jeopardize the stabilization of foundation ditch, bury great potential safety hazard.The opposing party
Face, in hole lasting infiltration will also result in the continuous decrease of level of ground water in place, cause surrounding building to settle, to surrounding
Environment damages.
Utility model content
The purpose of this utility model is to provide deep weathered rock formation foundation ditch water sealing structure, it is intended to solves existing deep weathering
Rock stratum foundation pit waterproof curtain projected depth deficiency, or water-stop curtain fail and cause bottom of foundation ditch to seep water, to base pit stability
The problem of being damaged with surrounding enviroment.
The utility model is achieved in that deep weathered rock formation foundation ditch water sealing structure, along ground down direction, shape successively
Into having solum, block strongly weathered sand-rock and micro- weathered rock formation, deep weathered rock formation foundation ditch water sealing structure includes supporting construction, led to
Cross the consolidation wall of churning formation and block the block wall of rock fracture, the lower end of the supporting construction is crossed bottom of foundation ditch, prolonged
Extend in solum, the consolidation wall is placed in the solum, and it is severely-weathered that the lower end for consolidating wall is connected to the bulk
The top surface of rock stratum, the upper end of the consolidation wall is located at below the bottom of the foundation ditch, and is overlapped with the supporting construction；The envelope
The upper end of wall is docked at the lower end of the consolidation wall, and the lower end of the end-blocking wall extends to through block strongly weathered sand-rock down
Micro- weathered rock formation.
Further, described deep weathered rock formation foundation ditch water sealing structure includes vacant section, and described vacant section around described
The consolidation wall is docked in supporting construction disposed inboard, described vacant section of lower end, and described vacant section of upper end is connected to foundation ditch bottom
Portion.
Further, the consolidation wall is enclosed by multiple high-pressure rotary jet grouting piles in vertical shape arrangement and formed, the block wall
Enclosed and formed by multiple cement injection stakes in vertical shape arrangement.
Further, the outer peripheral portion of the adjacent high-pressure rotary jet grouting pile overlaps connection, the adjacent cement injection stake
Outer peripheral portion overlap connection.
Further, the upper end of the consolidation wall and the inner side of the supporting construction overlap, and the lap of splice is not less than 3m.
Further, the block wall extends to the depth of micro- weathered rock formation and is at least 0.5m.
Further, the deep weathered rock formation foundation ditch water sealing structure includes multiple constructions extended down by bottom of foundation ditch
Hole, for multiple construction orifice rings around the disposed inboard of the supporting construction, the upper end in the construction hole is located at the bottom of foundation ditch, institute
The lower end for stating construction hole sequentially passes through the solum and block strongly weathered sand-rock, extends in micro- weathered rock formation；It is logical
Cross construction hole bottom in slip casting and extend to it is described construction hole outside form the cement injection stake, by the construction hole
Middle part inner high voltage churning and extend to it is described construction hole outside form the high-pressure rotary jet grouting pile.
Further, the deep weathered rock formation foundation ditch water sealing structure includes forming the construction guide groove in bottom of foundation ditch, institute
The inner side that construction guide groove is located at the supporting construction is stated, and along the inner side of the supporting construction around arrangement.
Further, the bottom land of the construction guide groove is equipped with armoured concrete slab, the upper end open shape in the construction hole
Into on the armoured concrete slab.
Compared with prior art, deep weathered rock formation foundation ditch water sealing structure, has thoroughly been blocked in weathered rock formation and coating
Seepage action of ground water passage, bottom of foundation ditch formed a relatively closed space, cheat the underground water outside the underground water and hole at bottom
Almost there is no hydraulic connection, therefore, cheating the operation of drawing water at bottom will not have an impact to the level of ground water outside hole, so as to which hole bottom be taken out
Water minimizes to the adverse effect of foundation ditch surrounding enviroment, and the sedimentation of building has obtained good control.
Brief description of the drawings
Fig. 1 is the profile for the deep weathered rock formation foundation ditch water sealing structure that the utility model embodiment provides；
Fig. 2 is the partial top view for the deep weathered rock formation foundation ditch water sealing structure that the utility model embodiment provides.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Realization of the present utility model is described in detail below in conjunction with specific embodiment.
Same or analogous label corresponds to same or analogous part in the accompanying drawing of the present embodiment；Retouched of the present utility model
In stating, it is to be understood that if it is based on accompanying drawing to have the orientation of the instructions such as term " on ", " under ", "left", "right" or position relationship
Shown orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply institute
The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore position is closed described in accompanying drawing
Term the being given for example only property explanation of system, it is impossible to the limitation to this patent is interpreted as, for one of ordinary skill in the art
Speech, the concrete meaning of above-mentioned term can be understood as the case may be.
It is preferred embodiment provided by the utility model shown in reference picture 1-2.
In the present embodiment, along ground down direction, solum, block strongly weathered sand-rock and micro- decomposed rock are sequentially formed with
Layer.
Deep weathered rock formation foundation ditch water sealing structure includes supporting construction 10, and supporting construction 10 is arranged around foundation pit side-wall, and
Lower end is crossed bottom of foundation ditch and extended in solum, for the earthy characteristic of solum, is taken in the lower inside of supporting construction 10
The consolidation wall 20 formed by churning is connected to, consolidation wall 20 is placed in solum, and the lower end for consolidating wall 20 is connected to bulk by force
The top surface of weathered rock formation, upper end are located at below the bottom of foundation ditch；There is the characteristic of rock fracture for block strongly weathered sand-rock, Gu
To tie and block wall 30 is connected under the lower end of wall 20, block wall 30 blocks rock fracture, in order that block wall 30 is better, closure
The lower end of wall 30 extends to micro- weathered rock formation through block strongly weathered sand-rock down.
So, the seepage action of ground water passage that water sealing structure described above has thoroughly been blocked in weathered rock formation and solum,
Bottom of foundation ditch forms a relatively closed space, and the underground water cheated outside the underground water and hole at bottom does not almost have hydraulic connection, because
This, cheating the operation of drawing water at bottom will not have an impact to the level of ground water outside hole, so as to which hole bottom be drawn water to foundation ditch surrounding enviroment
Adverse effect minimizes, and the sedimentation of building has obtained good control.
In the present embodiment, also have one section of controllable length between the upper end top surface of wall 20 and bottom of foundation ditch vacant section is consolidated
40, vacant section 40 disposed inboard around supporting construction 10, vacant section 40 of lower end docking consolidation wall 20, upper end is connected to foundation ditch
Bottom, according to foundation ditch infiltration situation, the length that vacant section 40 of control so that consolidation wall 20 and the lap of splice of supporting construction 10 expire
Sufficient sealing requirement.
In the present embodiment, consolidation wall 20 is enclosed by multiple high-pressure rotary jet grouting piles 201 in vertical shape arrangement and formed, and top
Overlapped with supporting construction 10, the lower end of high-pressure rotary jet grouting pile 201 abuts the top surface of block strongly weathered sand-rock, and upper end docks vacant section
40。
Block wall 30 is enclosed by multiple cement injection stakes 301 in vertical shape arrangement and formed, the upper end of cement injection stake 301
High-pressure rotary jet grouting pile 201 is docked, and supports the top surface in block strongly weathered sand-rock, the lower end of cement injection stake 301 passes through block down
Shape strongly weathered sand-rock extends to micro- weathered rock formation.
In the present embodiment, high-pressure rotary jet grouting pile 201 and cement injection stake 301 are cylindrical.
As other embodiment, high-pressure rotary jet grouting pile 201 and cement injection stake 301 can also be in cubic shape or irregular shape
Shape.
In the present embodiment, in order to save such as the engineering time of above-mentioned water sealing structure, guarantee operating efficiency, high-pressure rotary jet grouting pile
201 and cement injection stake 301 are concentric arrangement.
As other embodiment, pressure rotary-spraying stake 201 can also be that Under Asymmetrical is arranged with cement injection stake 301.
In the present embodiment, in order to ensure the seepage channel of completely cut off underground, the peripheral part of adjacent high-pressure rotary jet grouting pile 201
Divide and overlap connection, the outer peripheral portion of adjacent cement injection stake 301 overlaps connection.
As other embodiment, the periphery tangent connection two-by-two of adjacent high-pressure rotary jet grouting pile 201, adjacent cement injection stake
The tangent connection two-by-two of 301 periphery.
In the present embodiment, consolidate the top of wall 20 and overlapped with the lower inside of supporting construction 10, and the length overlapped is many
In 3m, the effect of tight sealing can be not only played, and has thoroughly completely cut off the phenomenon of foundation ditch infiltration, and causes above-mentioned sealing knot
Structure is more firm.
In the present embodiment, the lower end of block wall 30 extends to micro- weathered rock formation through block strongly weathered sand-rock, in order to complete
Block the seepage channel of underground so that water sealing structure effect described above is more notable, and gentle breeze is goed deep into the lower end of block wall 30
The depth of rock stratum at least 0.5m.
In the present embodiment, deep weathered rock formation foundation ditch water sealing structure is provided with multiple constructions extended down in bottom of foundation ditch
Hole 50, multiple construction holes 50 are located at bottom of foundation ditch around the disposed inboard of supporting construction 10, the upper end in hole 50 of constructing, and lower end is sequentially
Through solum and strongly weathered sand-rock, extend in micro- weathered rock formation；Pass through the cement injection in the bottom in construction hole 50, slurry
Liquid spreads along rock fracture from inside to outside from construction hole 50, blocks rock fracture, so as to form cement injection stake 301, makes rock
The water in crack can not flow freely, and play good insulating effect.
In the present embodiment, by the middle part inner high voltage churning slurries in construction hole 50, slurries destroy the construction periphery of hole 50
The soil body, and mixed with soil shear failure and be frozen into high-pressure rotary jet grouting pile 201.
Water sealing structure described above, for the tripe systems layer of deep weathered rock formation, form different parts so that sealing is imitated
Fruit is more notable.
In the present embodiment, in order that the outer peripheral portion of adjacent high-pressure rotary jet grouting pile 201 overlaps connection, the spacing in hole 50 of constructing
Less than the diameter of high-pressure rotary jet grouting pile 201, in order that the outer peripheral portion of adjacent cement injection stake 301 overlaps connection, hole 50 of constructing
Spacing again smaller than cement injection stake 301 diameter.
Specifically, high-pressure rotary jet grouting pile 201 is equal with the diameter of cement injection stake 301, is all 300mm-500mm, hole of constructing
50 spacing is less than 300mm.
As other embodiment, the diameter of high-pressure rotary jet grouting pile 201 can also be more than or less than and cement injection stake 301
Diameter.
As other embodiment, block wall 30, consolidation wall 20 are not limited to respectively by cement injection stake 301 and high-pressure rotary jet grouting pile
201 are formed.
In the present embodiment, in order to improve efficiency of construction, water sealing structure described above also includes to be formed in bottom of foundation ditch
Construction guide groove 501, for construction guide groove 501 around the disposed inboard of supporting construction 10, construction guide groove is in inverted trapezoidal shape, is built to construct
When making water sealing structure described above, it is more easy to draw hole so that construction is more convenient.
In the present embodiment, the bottom land of construction guide groove 501 is equipped with armoured concrete slab 502, in order that the cloth in construction hole 50
The positioning that construction hole 50 more precisely, is reserved with armoured concrete slab 502 is put, when construction water sealing structure described above
When, draw hole at the positioning in construction hole 50, so as to form the upper end open in construction hole 50 at the positioning in construction hole 50.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. deep weathered rock formation foundation ditch water sealing structure, it is characterised in that along ground down direction, be sequentially formed with solum, block
Shape strongly weathered sand-rock and micro- weathered rock formation, the deep weathered rock formation foundation ditch water sealing structure include supporting construction, pass through churning shape
Into consolidation wall and block rock fracture block wall, the lower end of the supporting construction crosses bottom of foundation ditch, extends to the soil body
In layer, the consolidation wall is placed in the solum, and the lower end of the consolidation wall is connected to the top of the block strongly weathered sand-rock
Face, the upper end of the consolidation wall is located at below the bottom of the foundation ditch, and is overlapped with the supporting construction；The block wall it is upper
End is docked at the lower end of the consolidation wall, and the lower end of the block wall extends to micro- decomposed rock through block strongly weathered sand-rock down
Layer.
2. deep weathered rock formation foundation ditch water sealing structure as claimed in claim 1, it is characterised in that described deep weathered rock formation
Foundation ditch water sealing structure includes vacant section, and described vacant section around the supporting construction disposed inboard, described vacant section of lower end pair
The consolidation wall is connect, described vacant section of upper end is connected to bottom of foundation ditch.
3. deep weathered rock formation foundation ditch water sealing structure as claimed in claim 1, it is characterised in that the consolidation wall is in by multiple
The high-pressure rotary jet grouting pile of vertical shape arrangement, which encloses, to be formed, the block wall enclosed by multiple cement injection stakes arranged in vertical shape and
Into.
4. deep weathered rock formation foundation ditch water sealing structure as claimed in claim 3, it is characterised in that the adjacent high-pressure rotary-spray
The outer peripheral portion of stake overlaps connection, and the outer peripheral portion of the adjacent cement injection stake overlaps connection.
5. deep weathered rock formation foundation ditch water sealing structure as claimed in claim 1, it is characterised in that the top of the consolidation wall with
The inner side overlap joint of the supporting construction, and the lap of splice is not less than 3m.
6. deep weathered rock formation foundation ditch water sealing structure as claimed in claim 1, it is characterised in that the block wall extends to micro-
The depth of weathered rock formation is at least 0.5m.
7. the deep weathered rock formation foundation ditch water sealing structure as described in claim 3 or 4, it is characterised in that the deep decomposed rock
Layer foundation ditch water sealing structure includes multiple construction holes extended down by bottom of foundation ditch, and multiple construction orifice rings are around the supporting knot
The disposed inboard of structure, the upper end in the construction hole are located at the bottom of foundation ditch, and the lower end in the construction hole sequentially passes through the soil body
Layer and block strongly weathered sand-rock, are extended in micro- weathered rock formation；By the slip casting in the bottom in the construction hole and expand
Be charged to it is described construction hole outside form the cement injection stake, by it is described construct hole middle part inner high voltage churning and extend to institute
State and form the high-pressure rotary jet grouting pile outside construction hole.
8. deep weathered rock formation foundation ditch water sealing structure as claimed in claim 7, it is characterised in that the deep weathered rock formation base
Hole water sealing structure includes forming the construction guide groove in bottom of foundation ditch, and the construction guide groove is located at the inner side of the supporting construction, and
Along the inner side of the supporting construction around arrangement.
9. deep weathered rock formation foundation ditch water sealing structure as claimed in claim 8, it is characterised in that the bottom land of the construction guide groove
Armoured concrete slab is equipped with, the upper end open in the construction hole is formed on the armoured concrete slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720853516.XU CN207032256U (en) | 2017-07-14 | 2017-07-14 | Deep weathered rock formation foundation ditch water sealing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720853516.XU CN207032256U (en) | 2017-07-14 | 2017-07-14 | Deep weathered rock formation foundation ditch water sealing structure |
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| CN207032256U true CN207032256U (en) | 2018-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386297A (en) * | 2017-07-14 | 2017-11-24 | 深圳市工勘岩土集团有限公司 | Deep weathered rock formation foundation ditch water sealing structure |
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- 2017-07-14 CN CN201720853516.XU patent/CN207032256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386297A (en) * | 2017-07-14 | 2017-11-24 | 深圳市工勘岩土集团有限公司 | Deep weathered rock formation foundation ditch water sealing structure |
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