CN108301398A - A kind of TRD diaphragm walls quality evaluating method - Google Patents
A kind of TRD diaphragm walls quality evaluating method Download PDFInfo
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- CN108301398A CN108301398A CN201810063396.2A CN201810063396A CN108301398A CN 108301398 A CN108301398 A CN 108301398A CN 201810063396 A CN201810063396 A CN 201810063396A CN 108301398 A CN108301398 A CN 108301398A
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- wall
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of TRD diaphragm walls quality evaluating methods, boring and coring test diaphragm wall uniformity and unconfined compressive strength are carried out, to assess strength characteristics of the Soil-cement Wall at different depth；The experiment of varying head positive/negative-pressure water is taken to be detected the infiltration coefficient for stirring wall, measure the specific water absorption of crack rock, and infiltration coefficient is found out with its conversion, the water penetration and fissurity of confirmation crack rock and its situation of change with depth, when practical operation a SEA LEVEL VARIATION is recorded every setting time, until water level decreasing speed tends towards stability, convert its infiltration coefficient；Image and radar scanning, observation drilling inside cement and the cementing situation of undisturbed soil are carried out to each drill hole inner wall, if there are crack, hole, honeycomb or loose defects, are observed to stirring wall internal soundness and uniformity.
Description
Technical field
The present invention relates to a kind of TRD diaphragm walls quality evaluating methods.
Background technology
TRD (Trench cutting Re-mixing Deep wall) engineering method is that one kind that Japan develops in recent years is novel
Continuous wall construction method, and the most advanced in the world go along with sb. to guard him one of engineering method, the one kind of TRD engineering methods as foundation pit waterproof at present
Emerging engineering method, which has the function of voluntarily digging and solidify liquid is mixed, and is inserted into ground by chain saw type cutting tool first
Base, digging are then injected into curing agent to wall inclination depth, are mixed with the soil body in situ, and continue lateral digging, stirring, horizontal
It promotes, is built into the Soil-cement diaphragm wall of high-quality.
Currently, in terms of to the evaluation of TRD engineering method diaphragm wall quality of wall, both at home and abroad without specific standards, intensity (no lateral spacing list
Axis compression strength >=0.8MPa) and infiltration coefficient (1 × 10-7cm/s of ＜) be TRD engineering methods stirring wall quality of wall detection in most close
The index of key in previous research to take boring and coring test core sample or directly extract solidify liquid and the mixed soil after the stirring of stratum more
Liquid makes sample and is detected, and testing result is influenced by probing, can not really reflect stirring wall quality of wall；And it can not detect
Vertical depth inner wall uniformity and integrality.
Invention content
The present invention is to solve the above-mentioned problems, it is proposed that a kind of TRD diaphragm walls quality evaluating method, the present invention are able to verify that
Whether TRD mass meets design requirement, compared with design requirement before, this method more comprehensively, it is system, accurate, be more suitable for using
In TRD diaphragm wall quality evaluations.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of TRD diaphragm walls quality evaluating method, includes the following steps：
(1) boring and coring test diaphragm wall uniformity and unconfined compressive strength are carried out, is existed with assessing Soil-cement Wall
Strength characteristics at different depth；
(2) it takes the experiment of varying head positive/negative-pressure water to be detected the infiltration coefficient for stirring wall, measures the list of crack rock
Position water absorption, and finds out infiltration coefficient with its conversion, confirms water penetration and fissurity and its variation with depth of crack rock
Situation records a SEA LEVEL VARIATION when practical operation every setting time, until water level decreasing speed tends towards stability, converting, it is oozed
Saturating coefficient；
(3) image scanning, observation drilling inside cement and the cementing situation of undisturbed soil are carried out to each drill hole inner wall, if exist
Crack, hole, honeycomb or loose defect intuitively observe stirring wall internal soundness and uniformity；
(4) electromagnetic wave borehole radar is used to be scanned each drilling, stirring wall is in observation drilling surrounding a certain range
No there are apparent crack, hole or loose defects, verify stirring wall overall integrity and uniformity.
Further, in the step (2), fields water injection experiment is carried out, measures drilling specific water absorption, and convert with it
The infiltration coefficient for finding out one borehole determines the whole water penetration of TRD diaphragm walls and its situation of change with depth, converses same
Infiltration coefficient under one drilling different depth, is detected different drilling, comparative analysis testing result obtains entire TRD
The integrality of diaphragm wall and permeable degree.
Further, it is drilled in molded TRD diaphragm wall representative locations section constructions using drilling machine, acquires hole number
Amount, boring radius and the construction parameter per cyclic advance.
Further, borehole sidewall is cleaned with clear water before detection, until cleaning up.
Further, clear water is refilled after cleaning up in drilling, records initial water bit line height at this time, and fixed
Shi Jilu water level line height, until amount of seepage is finally intended to stationary value.
Further, coefficient of permeability K is：
Wherein, R-boring radius (mm)；t1、t2Begin for observation, between terminal hour, h1、h2Corresponding to time t1、t2When drilling in
The difference in height of the water filling water surface and level of ground water, A are form factor, same homogeneous soil：Test segment length.
It in the step (3), after boring and coring, through hole flushing and draws water, is carried out using lower borehole television device to hole peripheral wall
It checks, and Observational depth is recorded.
Compared with prior art, beneficial effects of the present invention are：
(1) quality evaluation mode is more abundant, and evaluation index is relatively reliable；
(2) evaluation result more comprehensively, system, evaluation confidence level it is stronger；
(3) the case where detection process does not interfere with the normal construction of TRD, and there is no cross-operation, entire detection process is fast
Speed and accuracy height.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is flow diagram of the present invention；
Specific implementation mode：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
In the present invention, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ",
The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this hair
Bright each component or component structure relationship and the relative of determination, not refer in particular to either component or element in the present invention, cannot understand
For limitation of the present invention.
In the present invention, term such as " affixed ", " connected ", " connection " shall be understood in a broad sense, and indicate may be a fixed connection,
Can also be to be integrally connected or be detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For
The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the present invention as the case may be,
It is not considered as limiting the invention.
As shown in Figure 1, as shown in Figure 1, a kind of TRD diaphragm walls quality evaluating method
(1) drilling machine is utilized to drill in molded TRD diaphragm wall representative locations section constructions, Specific construction parameter (is bored
Hole number, boring radius, every cyclic advance etc.) it can be required flexibly to choose according to site operation；
(2) boring and coring：It after taking out core sample, is put into curing box, send to laboratory and carry out intensity detection, obtain different positions
Set the core sample intensity distribution feature under drilling different depth；
(3) varying head packer permeability test in drilling：The experiment of varying head positive/negative-pressure water is taken to carry out the infiltration coefficient for stirring wall
Detection, measures the specific water absorption of crack rock, and find out infiltration coefficient with its conversion, confirms the water penetration of crack rock and splits
Gap and its situation of change with depth record a SEA LEVEL VARIATION when practical operation, until water level decreasing speed every 5min
It tends towards stability, convert its osmotic coefficient k.Calculate separately the permeability to drill under different bid sections；
(4) high definition borehole television is imaged：Each drill hole inner wall is scanned using high definition borehole television, observation drilling inside
Cement and the cementing situation of undisturbed soil, if there are crack, hole, honeycomb and it is loose the defects of, to stirring wall internal soundness and
Uniformity is intuitively observed.It after boring and coring, through hole flushing, draws water, lower borehole television device to hole peripheral wall is checked, and right
Observational depth is recorded；
(5) electromagnetic wave borehole radar detects：Each drilling is scanned using electromagnetic wave borehole radar, around observation drilling
Within the scope of 2m stir wall with the presence or absence of apparent crack, hole and it is loose the defects of, further verification stirring wall overall integrity and
Uniformity.
Fields water injection experiment is carried out, drilling specific water absorption is measured, and finds out the infiltration coefficient of one borehole with its conversion,
It determines the whole water penetration of TRD diaphragm walls and its situation of change with depth, converses the infiltration under same drilling different depth
Coefficient is detected different drilling, comparative analysis testing result, obtains the integrality of entire TRD diaphragm walls and permeable journey
Degree.
It is drilled in molded TRD diaphragm wall representative locations section constructions using drilling machine, acquisition drilling hole amount, drilling half
The construction parameter of diameter and every cyclic advance.
Borehole sidewall is cleaned with clear water before detection, until cleaning up.
Clear water is refilled after cleaning up in drilling, records initial water bit line height at this time, and time recording water
Bit line height, until amount of seepage is finally intended to stationary value.
Further, coefficient of permeability K is：
Wherein, R-boring radius (mm)；t1、t2Begin for observation, between terminal hour, h1、h2Corresponding to time t1、t2When drilling in
The difference in height of the water filling water surface and level of ground water, A are form factor, same homogeneous soil：L is experiment segment length.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (7)
1. a kind of TRD diaphragm walls quality evaluating method, it is characterized in that：Include the following steps：
(1) boring and coring test diaphragm wall uniformity and unconfined compressive strength are carried out, to assess Soil-cement Wall in difference
The strength characteristics of depth；
(2) experiment of varying head positive/negative-pressure water is taken to be detected the infiltration coefficient for stirring wall, the unit for measuring crack rock is inhaled
Water, and find out infiltration coefficient with its conversion confirms the water penetration and fissurity and its situation of change with depth of crack rock,
A SEA LEVEL VARIATION is recorded every setting time when practical operation, until water level decreasing speed tends towards stability, convert its infiltration system
Number；
(3) image scanning, observation drilling inside cement and the cementing situation of undisturbed soil are carried out to each drill hole inner wall, if exist and split
Seam, hole, honeycomb or loose defect intuitively observe stirring wall internal soundness and uniformity；
(4) electromagnetic wave borehole radar is used to be scanned each drilling, whether stirring wall is deposited in observation drilling surrounding a certain range
In apparent crack, hole or loose defect, verification stirring wall overall integrity and uniformity.
2. a kind of TRD diaphragm walls quality evaluating method as described in claim 1, it is characterized in that：In the step (2), carry out
Fields water injection is tested, and drilling specific water absorption is measured, and the infiltration coefficient of one borehole is found out with its conversion, determines that TRD is continuous
The whole water penetration of wall and its situation of change with depth converse the infiltration coefficient under same drilling different depth, to difference
Drilling be detected, comparative analysis testing result obtains the integrality of entire TRD diaphragm walls and permeable degree.
3. a kind of TRD diaphragm walls quality evaluating method as claimed in claim 2, it is characterized in that：Using drilling machine molded
TRD diaphragm wall representative locations section constructions drill, acquisition drilling hole amount, boring radius and the construction parameter per cyclic advance.
4. a kind of TRD diaphragm walls quality evaluating method as claimed in claim 2, it is characterized in that：Before detection brill is cleaned with clear water
Hole side wall, until cleaning up.
5. a kind of TRD diaphragm walls quality evaluating method as claimed in claim 2, it is characterized in that：After cleaning up in drilling
Clear water is refilled, initial water bit line height at this time, and time recording water level line height are recorded, until amount of seepage finally becomes
To in stationary value.
6. a kind of TRD diaphragm walls quality evaluating method as claimed in claim 2, it is characterized in that：Coefficient of permeability K is：
Wherein, R-boring radius (mm)；t1、t2Begin for observation, between terminal hour, h1、h2Corresponding to time t1、t2When drill in water filling
The difference in height of the water surface and level of ground water, A are form factor, same homogeneous soil：Test segment length.
7. a kind of TRD diaphragm walls quality evaluating method as described in claim 1, it is characterized in that：In the step (3), drilling
It after coring, through hole flushing and draws water, is checked using lower borehole television device to hole peripheral wall, and Observational depth is recorded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810063396.2A CN108301398B (en) | 2018-01-23 | 2018-01-23 | TRD continuous wall quality evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810063396.2A CN108301398B (en) | 2018-01-23 | 2018-01-23 | TRD continuous wall quality evaluation method |
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| CN108301398A true CN108301398A (en) | 2018-07-20 |
| CN108301398B CN108301398B (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521479A (en) * | 2018-10-11 | 2019-03-26 | 浙江交工集团股份有限公司 | A kind of Indirect testing method of diaphram wall percolating water |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006045877A (en) * | 2004-08-04 | 2006-02-16 | Kobelco Cranes Co Ltd | Underground continuous wall construction method |
| JP3931769B2 (en) * | 2002-08-30 | 2007-06-20 | コベルコクレーン株式会社 | Underground continuous groove excavation method and underground continuous groove excavator |
| CN102505701A (en) * | 2011-09-28 | 2012-06-20 | 中国水利水电第七工程局成都水电建设工程有限公司 | Self-compaction mortar and deep hole curtain pouring construction method |
| CN103410119A (en) * | 2013-06-24 | 2013-11-27 | 中国葛洲坝集团国际工程有限公司 | Method for water interception curtain grouting in leakage concrete |
| CN104596802A (en) * | 2015-01-27 | 2015-05-06 | 华东建筑设计研究院有限公司 | Slurry sampling device used for detecting TRD equal-thickness cement stirring wall |
| CN104990757A (en) * | 2015-07-29 | 2015-10-21 | 上海市机械施工集团有限公司 | Cement soil in-situ sampling device and sampling method using the same |
-
2018
- 2018-01-23 CN CN201810063396.2A patent/CN108301398B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3931769B2 (en) * | 2002-08-30 | 2007-06-20 | コベルコクレーン株式会社 | Underground continuous groove excavation method and underground continuous groove excavator |
| JP2006045877A (en) * | 2004-08-04 | 2006-02-16 | Kobelco Cranes Co Ltd | Underground continuous wall construction method |
| CN102505701A (en) * | 2011-09-28 | 2012-06-20 | 中国水利水电第七工程局成都水电建设工程有限公司 | Self-compaction mortar and deep hole curtain pouring construction method |
| CN103410119A (en) * | 2013-06-24 | 2013-11-27 | 中国葛洲坝集团国际工程有限公司 | Method for water interception curtain grouting in leakage concrete |
| CN104596802A (en) * | 2015-01-27 | 2015-05-06 | 华东建筑设计研究院有限公司 | Slurry sampling device used for detecting TRD equal-thickness cement stirring wall |
| CN104990757A (en) * | 2015-07-29 | 2015-10-21 | 上海市机械施工集团有限公司 | Cement soil in-situ sampling device and sampling method using the same |
Non-Patent Citations (1)
| Title |
|---|
| 周永炼等: ""土体工程勘察中钻孔注水试验渗透系数的计算"", 《技术与市场》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521479A (en) * | 2018-10-11 | 2019-03-26 | 浙江交工集团股份有限公司 | A kind of Indirect testing method of diaphram wall percolating water |
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| CN108301398B (en) | 2019-12-24 |
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