CN108387496A - A kind of TRD diaphragm walls permeability detecting method - Google Patents
A kind of TRD diaphragm walls permeability detecting method Download PDFInfo
- Publication number
- CN108387496A CN108387496A CN201810064721.7A CN201810064721A CN108387496A CN 108387496 A CN108387496 A CN 108387496A CN 201810064721 A CN201810064721 A CN 201810064721A CN 108387496 A CN108387496 A CN 108387496A
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- trd
- diaphragm walls
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- water
- detecting method
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- 230000035699 permeability Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000001764 infiltration Methods 0.000 claims abstract description 9
- 230000008595 infiltration Effects 0.000 claims abstract description 9
- 238000002474 experimental method Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000010835 comparative analysis Methods 0.000 claims abstract description 4
- 230000035515 penetration Effects 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000012407 engineering method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (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 permeability detecting methods, carry out fields water injection experiment, measure drilling specific water absorption, and the infiltration coefficient of one borehole is found out with its conversion, it determines the whole water penetration of TRD diaphragm walls and its situation of change with depth, converses the infiltration coefficient under same drilling different depth, different drilling is detected, comparative analysis testing result obtains the integrality of entire TRD diaphragm walls and permeable degree.Compared to test in laboratory, testing result of the present invention is more accurate, more close with actual value.
Description
Technical field
The present invention relates to a kind of TRD diaphragm walls permeability detecting 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, but to TRD diaphragm walls
In terms of permeability, it is necessarily less than 1 × 10-7cm/s by design requirement, but in infiltrative context of detection, generally use both at home and abroad
The mode of live boring and coring experimental determination, because TRD diaphragm walls mainly consider its impervious effect, to the intensity requirement of diaphragm wall
It is not high, therefore the compression strength of TRD diaphragm walls is generally smaller, and when laboratory carries out impervious experiment, excessive hydraulic pressure compressing examination
Part causes its internal generation crack, then ruptures, often leads to test result and actual value difference is very big.
Invention content
The present invention is to solve the above-mentioned problems, it is proposed that a kind of TRD diaphragm walls permeability detecting method, the present invention can apply
Work scene is detected the permeability of TRD diaphragm walls, and compared to test in laboratory, the testing result is more accurate, closer
Important evidence is provided in the infiltrative actual value of TRD diaphragm walls, while to formulate seepage control measure and based process scheme etc..
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of TRD diaphragm walls permeability detecting method, progress fields water injection experiment, measurement drilling specific water absorption, and with
It, which converts, finds out the infiltration coefficient of one borehole, determines the whole water penetration of TRD diaphragm walls and its situation of change with depth, changes
The infiltration coefficient under same drilling different depth is calculated, different drilling is detected, comparative analysis testing result obtains whole
The integrality and permeable degree of a TRD diaphragm walls.
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：L is experiment segment length.
Compared with prior art, beneficial effects of the present invention are：
(1) compared to test in laboratory, testing result of the present invention is more accurate, more close with actual value；
(2) execute-in-place is simple, and process is less, easily-learned easily mastered；
(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, Fig. 2 are general illustrations of the present invention；
Wherein 1.TRD diaphragm walls drilling drilling, 2. earth's surfaces, 3.t1Moment initial water bit line, 4.t2Moment water level line.
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 depicted in figs. 1 and 2, a kind of TRD diaphragm walls permeability detecting method is tested by the fields water injection at scene, is surveyed
Surely drill specific water absorption, and the infiltration coefficient of one borehole is found out with its conversion, and the entirety to illustrate TRD diaphragm walls is permeable
Property and its with depth situation of change, converse the infiltration coefficient under same drilling different depth, separately take several representative drillings
Same operation is carried out, comparative analysis testing result proves the integrality of entire TRD diaphragm walls and permeable degree.
Packer permeability test cleans hole wall with clear water, then by clear water injection testing section, is allowed to from the crack of hole wall
Infiltration in peripherad wall records a SEA LEVEL VARIATION every 5min, and after a period of time, amount of seepage finally tends to
In a stationary value, 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.
Fig. 1 includes the drilling of TRD diaphragm walls and different moments water level line situation of change.
(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) borehole sidewall is cleaned with clear water, cleaned 2-3 times repeatedly, until cleaning up；
(3) clear water is refilled after cleaning up, and records initial water bit line height at this time, the i.e. water level line at t1 moment
(4) water level line height next time and the water level line at t2 moment are recorded after 5min.
(5) data preparation of record is substituted into the formula, obtains the wall permeability under the drilling bid section；
(6) after the completion of bid section detection, drilling machine continues construction drill, repeats the above process, obtains drilling difference respectively
Wall permeability under depth；
(7) after the drilling construction, continue other drillings of constructing, measure its wall permeability that drills；
(8) it is compared and analyzed in conjunction with all drilling testing results, proves the integrality of diaphragm wall and permeable degree, obtained
The permeability of whole TRD diaphragm walls.
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 (5)
1. a kind of TRD diaphragm walls permeability detecting method, it is characterized in that：Fields water injection experiment is carried out, drilling unit water suction is measured
Amount, and converted with it and find out the infiltration coefficient of one borehole, determine the whole water penetration of TRD diaphragm walls and its variation with depth
Situation converses the infiltration coefficient under same drilling different depth, is detected to different drilling, comparative analysis detection knot
Fruit obtains the integrality of entire TRD diaphragm walls and permeable degree.
2. a kind of TRD diaphragm walls permeability detecting method as described in claim 1, 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.
3. a kind of TRD diaphragm walls permeability detecting method as described in claim 1, it is characterized in that：Before detection brill is cleaned with clear water
Hole side wall, until cleaning up.
4. a kind of TRD diaphragm walls permeability detecting method as described in claim 1, 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.
5. a kind of TRD diaphragm walls permeability detecting method as described in claim 1, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064721.7A CN108387496A (en) | 2018-01-23 | 2018-01-23 | A kind of TRD diaphragm walls permeability detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064721.7A CN108387496A (en) | 2018-01-23 | 2018-01-23 | A kind of TRD diaphragm walls permeability detecting method |
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| Publication Number | Publication Date |
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| CN108387496A true CN108387496A (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810064721.7A Pending CN108387496A (en) | 2018-01-23 | 2018-01-23 | A kind of TRD diaphragm walls permeability detecting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411634A (en) * | 2020-10-23 | 2021-02-26 | 中信国安建工集团有限公司 | Intelligent construction site construction security system and security method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091229A (en) * | 2013-01-31 | 2013-05-08 | 河海大学 | Variable water head sectional permeation coefficient measuring equipment and measuring method |
| CN103822863A (en) * | 2014-02-17 | 2014-05-28 | 同济大学 | Instrument used for measuring soil permeability coefficient by onsite drilling and water injection |
-
2018
- 2018-01-23 CN CN201810064721.7A patent/CN108387496A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091229A (en) * | 2013-01-31 | 2013-05-08 | 河海大学 | Variable water head sectional permeation coefficient measuring equipment and measuring method |
| CN103822863A (en) * | 2014-02-17 | 2014-05-28 | 同济大学 | Instrument used for measuring soil permeability coefficient by onsite drilling and water injection |
Non-Patent Citations (3)
| 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》 * |
| 袁瑞佳: "原位注水试验在水利防渗墙抗渗性能检测上的对比", 《低碳世界》 * |
| 陈武: "关于防渗墙渗透系数测定的总结", 《科技创新导报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411634A (en) * | 2020-10-23 | 2021-02-26 | 中信国安建工集团有限公司 | Intelligent construction site construction security system and security method |
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Application publication date: 20180810 |