CN109610525A - A kind of method of quick judgement water-stop curtain construction quality - Google Patents

A kind of method of quick judgement water-stop curtain construction quality Download PDF

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Publication number
CN109610525A
CN109610525A CN201811474430.1A CN201811474430A CN109610525A CN 109610525 A CN109610525 A CN 109610525A CN 201811474430 A CN201811474430 A CN 201811474430A CN 109610525 A CN109610525 A CN 109610525A
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China
Prior art keywords
water level
level observation
observation well
water
well
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CN201811474430.1A
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Chinese (zh)
Inventor
冯耀宗
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China MCC17 Group Co Ltd
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China MCC17 Group Co Ltd
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Priority to CN201811474430.1A priority Critical patent/CN109610525A/en
Publication of CN109610525A publication Critical patent/CN109610525A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00Testing foundations or foundation structures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/12Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/18Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material

Abstract

The invention discloses a kind of methods for quickly judging water-stop curtain construction quality, belong to the realm of building construction.The present invention inside and outside water-stop curtain stake by equidistantly drilling out inside water level observation well and outside water level observation well, and its inside is carried out to clean underlying pipeline, investment sandstone filtrate is filtered, finally is backfilled and tamped in pipeline external, carrying out the water-head on the inside of pumping with constant rate detection in water level observation well and outside well, judge whether to meet the rule outside interior drop with drop and water-head greater than 150mm, the water level observation well at this need to be marked by meeting the requirements, subsequent accurate detection is facilitated to carry out extended emphasis detection, it is incongruent, inside water level observation well and adjacent inside water level observation well and central point need to only be detected.

Description

A kind of method of quick judgement water-stop curtain construction quality
Technical field
The invention belongs to the realm of building construction, are specifically related to a kind of method for quickly judging water-stop curtain construction quality.
Background technique
Building foundation buried depth is generally deeper and deeper, and underground water is more and more abundant.The pressure-bearing present in underground space construction Influence of the water layer to foundation pit, need to block water to its foundation pit and drainage measure, usually setting water-stop curtain block water, drop according to this Influence of the low artesian aquifer to foundation pit, after dewatering operation is carried out on the inside of water-stop curtain building enclosure.
Currently used water-stop curtain is high-pressure rotary jet grouting pile, after construction, need to carry out integrality to water-stop curtain stake With the detection of the related datas such as permeability, but do not have in the prior art one targetedly range precisely detected, so this A process needs a large amount of drilling wells precisely to be detected, therefore needs water level in a large amount of drilling time and sensed water level inspection well Time largely effects on the construction efficiency of engineering, wastes a large amount of fund.Lacking can preliminary, fast qualitative and for subsequent detection There is provided one has targetedly term of reference, and then judges the method for water-stop curtain pile driving construction quality.
So proposing a kind of method for quickly judging water-stop curtain construction quality, precisely detected for reducing water-stop curtain Construction volume, operation and the time of quality testing, accurate detection subsequent to water-stop curtain provides one more targetedly Detection range.
Summary of the invention
It need to when the technical problem to be solved by the present invention is in order to solve the prior art to water-stop curtain progress quality testing A large amount of drilling engineering and the time for needing water level in a large amount of drilling time and sensed water level inspection well, largely effect on work The construction efficiency of journey wastes a large amount of bankroll problem, so proposing a kind of method for quickly judging water-stop curtain construction quality.With In tentatively being judged water-stop curtain, fast qualitative and provide one as subsequent detection there is targetedly term of reference, And then substantially reduce construction cost and reduce water-stop curtain construction volume, operating time and the quality testing precisely detected when Between, greatly improve its construction efficiency.
To achieve the goals above, the present invention uses following scheme: a kind of side quickly judging water-stop curtain construction quality Method, comprising the following steps:
Step 1: being used respectively according to Construction of Engineering Pile drawing in the inner side and outer side of the water-stop curtain stake four edges of rectangle Deep drilling rig equidistantly drills out each inside water level observation well and corresponding outside water level observation well;
Step 2: successively using steel pipe and filtering from top to bottom to each inside water level observation well and outside water level observation well Pipe progress is underlying, and carries out cleaning wellhole while putting into sandstone filtrate immediately filter out above impurity to screen pipe at 1-2m, Quartz sand is finally respectively adopted from top to bottom and clay is carried out being backfilled to earth's surface and be tamped;
Step 3: selecting any inside water level observation well to carry out pumping with constant rate, and at the same time right respectively using water-level gauge The inside water level observation well and corresponding outside water level observation well carry out the reading of height of water level;
Step 4: the comparison of water level reading value is carried out to inside water level observation well and corresponding outside water level observation well, Judge whether the water level reading value of inside water level observation well and corresponding outside water level observation well meets outside interior drop with the rule of drop It restrains and water-head is greater than 150mm;
Step 5: successively carrying out step 3 and step 4 to other inside inspection wells and corresponding outside water level observation well Operation, until completing the detection of all inside water level observation well and outside water level observation well.
Further, in step 1, the diameter of each inside water level observation well and outside water level observation well is 150-200mm, and inside water level observation well and outside water level observation well are respectively positioned on artesian aquifer or less and are less than water-stop curtain stake Effective length.
Further, each outside water level observation well and the angle of vertical direction are 0.2-0.4 °.
Further, the cloth that each inside water level observation well needs to avoid engineering pile in drawing sets up an office.
Further, the distance of the inside water level observation well and corresponding outside water level observation well is 1.0-1.5m; The spacing of the inside water level observation well and adjacent inside water level observation well is 1.2-1.5m.
Further, it in step 2, is cleaned when cleaning wellhole using tap water, sandstone filtrate is the grain composition of 2-5mm.
Further, in step 3, it is high that water level is carried out to inside water level observation well and corresponding outside water level observation well When the reading of degree, respectively using 60s, 120s and 180s as time interval, to inside water level observation well and corresponding outside water level The height of water level of inspection well is read three times respectively.
Further, in step 4, judge that the water level of inside water level observation well and corresponding outside water level observation well is read When the rule and water-head whether value meets outside interior drop with drop are greater than 150mm, the water level read access time of inside water level observation well It is necessarily less than with the water level read access time interval of corresponding outside water level observation well equal to 60s.
Further, in the water level reading value of inside water level observation well and corresponding outside water level observation well meets It, need to inside water level observation well and corresponding outside water to the position when the outer rule and water-head with drop of drop is greater than 150mm Position inspection well is marked, and expanded scope is needed to carry out emphasis detection when reminding subsequent accurate detection;If not meeting, without mark Note takes central point to carry out essence the inside water level observation well of the position and adjacent inside water level observation well when subsequent accurate detection Quasi- detection.
Compared with prior art, the present invention can obtain following technical effect:
1, the present invention is drilled out according to four edges of the drawing to water-stop curtain stake using 1.2-1.5m as spacing at equal intervals Inside water level observation well and outside water level observation well carry out water-stop curtain to be divided into multiple portions by equidistantly drilling out each well Point, Subarea detecting is carried out, the miscellaneous work for boring a large amount of water level detecting wells in accurate detection process can be greatlyd save.It greatly improves Drilling construction efficiency saves time drilling well duration.The spacing of inside water level observation well and outside water level observation well is 1.0-1.5m, Facilitate constructor carry out the short time in the water level value of water level observation well is read out, guarantee its water level value read timeliness and Accuracy.The angle of outside water level observation well and vertical direction is 0.2-0.4 °, since water layer water is held by water-stop curtain in outside Prevention, can be generated in the outside of water-stop curtain and be higher than the radian far from water-stop curtain side water level, so choose the angle, with The height for balancing the part reduces the error of its detection, improves the accuracy of detection.
2, sandstone filtrate is filled using 2-5mm continuous grading to 1-2m above screen pipe in the present invention;By sandstone Filtrate is filtered the silt inside wellhole, can eliminate influence of the silt to water level detecting accuracy in well, avoid mud Sand is largely extracted out in pump process, and then largely effects on the precision of water level detecting, while preventing damage of the silt to machine. It avoids the bottom space of water-stop curtain stake from negative pressure occur, influence the sinking of its foundation pit surrounding soil and then endangers Adjacent Buildings.
3, the present invention judges whether the water level reading value of inside water level observation well and corresponding outside water level observation well accords with The outer rule and water-head with drop of drop is greater than 150mm in closing.By to inside water level observation well and corresponding outside water-level observation The detection for the height of water level that well carries out can effectively and clearly carry out the quality condition of the water-stop curtain stake of the position preliminary Judgement, it is qualified to be marked, provide a more targetedly term of reference for subsequent accurate detection, be subsequent fine Quasi- detection carries out extended emphasis detection to the position and provides convenience.Incongruent needs to two neighboring inside water level Inspection well takes middle line to carry out further detection and can be completed to the quality testing within the scope of this.Quality inspection can be greatlyd save in this way The operating time of survey improves it and detects working efficiency, while also saving construction cost.
4, the water level of the water level read access time of inside water level observation well of the invention and corresponding outside water level observation well Read access time interval is necessarily less than equal to 60s, can be guaranteed the reading to water level within a short period of time in this way, be effectively reduced underground Soil property permeability guarantees timeliness and accuracy that its water level value is read to the infiltrative influence of water-stop curtain, improves inspection The accuracy of survey.When carrying out the reading of height of water level to inside water level observation well and corresponding outside water level observation well, respectively To be less than or equal to the time interval of 60s, 120s and 180s, to inside water level observation well and corresponding outside water level observation well Height of water level is read three times respectively, is detected three times by per period, can reduce detection error in this way, improves its inspection The quality of survey.
A kind of method quickly judging water-stop curtain construction quality proposed by the present invention, tentatively sentences water-stop curtain Disconnected, fast qualitative and provide one for subsequent detection there is targetedly term of reference, so substantially reduce construction cost with Water-stop curtain is reduced in the time of the construction volume, operating time and the quality testing that precisely detect, greatly improves its construction efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of water level observation well and outside water level observation well on the inside of foundation pit surrounding;
Fig. 2 is the sectional view in Fig. 1 at A-A.
In figure: 10, water-stop curtain stake, 11, inside water level observation well, 12, outside water level observation well.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
Embodiment 1:
Referring to figs. 1 and 2, a kind of method of quick judgement water-stop curtain construction quality, comprising the following steps:
Step 1: being used respectively according to Construction of Engineering Pile drawing in the inner side and outer side of 10 surrounding of water-stop curtain stake of rectangle Deep drilling rig equidistantly drills out each inside water level observation well 11 and corresponding outside water level observation well 12;Each inside water level The diameter of inspection well 11 and outside water level observation well 12 is 200mm, and inside water level observation well 11 and outside water level observation well 12 are respectively positioned on artesian aquifer or less and are less than the effective length of water-stop curtain stake 10;Each outside water level observation well 12 and Vertical Square To angle be 0.4 °;The cloth that each inside water level observation well 11 needs to avoid engineering pile in drawing sets up an office;Inside water-level observation The distance of well 11 and corresponding outside water level observation well 12 is 1.2m;Inside water level observation well 11 and adjacent inside water level are seen The spacing of well logging 12 is 1.5m.
Step 2: successively to each inside water level observation well 11 and outside water level observation well 12 from top to bottom using steel pipe and Screen pipe progress is underlying, and cleans wellhole using tap water immediately, while the sandstone filtrate for putting into 2-5mm grain composition is filtered Except impurity, it is filled to above screen pipe at 1.5m, quartz sand is finally respectively adopted from top to bottom and clay be backfilled to earth's surface simultaneously Compacting.
Step 3: selecting any inside water level observation well 11 to carry out pumping with constant rate, and at the same time distinguishing using water-level gauge The reading of height of water level is carried out to the inside water level observation well 1 and corresponding outside water level observation well 12, respectively with 60s, 120s and 180s is time interval, equal to the height of water level of inside water level observation well 11 and corresponding outside water level observation well 12 It reads respectively three times.
Step 4: carrying out the ratio of water level reading value to inside water level observation well 11 and corresponding outside water level observation well 12 Compared with, judge inside water level observation well 11 and corresponding outside water level observation well 12 water level reading value whether meet it is same outside interior drop The rule and water-head of drop are greater than 150mm;The water level read access time of inside water level observation well 11 and corresponding outside water level are seen The water level read access time interval of well logging 12 is necessarily less than equal to 60s;Inside water level observation well 11 and corresponding outside water level are seen The water level reading value of well logging 12 meet outside interior drop with rule drop and water-head be greater than 150mm when, need to inside water to the position Position inspection well 11 and corresponding outside water level observation well 12 are marked, and need expanded scope to carry out when reminding subsequent accurate detection Emphasis detection.
Step 5: step 3 successively is carried out to other inside water level observation wells 11 and corresponding outside water level observation well 12 With the operation of step 4, until completing the detection of all inside water level observation well 11 and outside water level observation well 12.
Embodiment 2:
Unlike the first embodiment:
Step 4: in the water level reading value of inside water level observation well 11 and corresponding outside water level observation well 12 do not meet Drop it is outer with rule drop and water-head be greater than 150mm when, then without label, to the inside water level of the position when subsequent accurate detection Inspection well 11 takes central point precisely to be detected with adjacent inside water level observation well 11.
A kind of method quickly judging water-stop curtain construction quality proposed by the present invention, it is adaptable for field condition, Securely and reliably, a large amount of construction times, mechanical equipment and personnel's investment are saved, construction cost is reduced.By to by water-stop curtain Carry out the detection for being divided into multiple subranges, and in the detection process for it is subsequent it is accurate detection provide one have targetedly examine Range is surveyed, can simultaneously be greatly shortened the time of drilling well and water level detecting, when reducing unnecessary construction volume and detection Between, construction cost is also reduced, its construction efficiency is greatly improved, can be promoted on a large scale.The successful implementation in Engineering Projects.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (9)

1. a kind of method for quickly judging water-stop curtain construction quality, which comprises the following steps:
Step 1: being used respectively according to Construction of Engineering Pile drawing in the inner side and outer side of water-stop curtain stake (10) four edges of rectangle Deep drilling rig equidistantly drills out each inside water level observation well (11) and corresponding outside water level observation well (12);
Step 2: successively to each inside water level observation well (11) and outside water level observation well (12) from top to bottom using steel pipe and Screen pipe progress is underlying, and carries out cleaning wellhole while putting into sandstone filtrate immediately carrying out filtering out 1-2m above impurity to screen pipe Place, quartz sand is finally respectively adopted from top to bottom and clay is carried out being backfilled to earth's surface and be tamped;
Step 3: selecting any inside water level observation well (11) to carry out pumping with constant rate, and at the same time right respectively using water-level gauge The inside water level observation well (11) and corresponding outside water level observation well (12) carry out the reading of height of water level;
Step 4: carrying out the ratio of water level reading value to inside water level observation well (11) and corresponding outside water level observation well (12) Compared with judging whether inside water level observation well (11) and the water level reading value of corresponding outside water level observation well (12) meet interior drop Outer rule and water-head with drop is greater than 150mm;
Step 5: successively carrying out step 3 to other inside water level observation wells (11) and corresponding outside water-level observation (12) well With the operation of step 4, until completing the detection of all inside water level observation well (11) and outside water level observation well (12).
2. a kind of method for quickly judging water-stop curtain construction quality according to claim 1, which is characterized in that step 1 In, the diameter of each inside water level observation well (11) and outside water level observation well (12) is 150-200mm, and inside water Position inspection well (11) and outside water level observation well (12) are respectively positioned on artesian aquifer or less and are less than the effective of water-stop curtain stake (10) Stake is long.
3. a kind of method for quickly judging water-stop curtain construction quality according to claim 2, which is characterized in that Ge Gesuo The angle for stating outside water level observation well (12) and vertical direction is 0.2-0.4 °.
4. a kind of method for quickly judging water-stop curtain construction quality according to claim 2, which is characterized in that Ge Gesuo The cloth that water level observation well (11) needs to avoid engineering pile in drawing on the inside of stating sets up an office.
5. a kind of method for quickly judging water-stop curtain construction quality according to claim 2, which is characterized in that in described The distance of side water level observation well (11) and corresponding outside water level observation well (12) is 1.0-1.5m;The inside water-level observation The spacing of well (11) and adjacent inside water level observation well (11) is 1.2-1.5m.
6. a kind of method for quickly judging water-stop curtain construction quality according to claim 1, which is characterized in that step 2 In, it is cleaned when cleaning wellhole using tap water, sandstone filtrate is the grain composition of 2-5mm.
7. a kind of method for quickly judging water-stop curtain construction quality according to claim 1, which is characterized in that step 3 In, when carrying out the reading of height of water level to inside water level observation well (11) and corresponding outside water level observation well (12), respectively Using 60s, 120s and 180s as time interval, to inside water level observation well (11) and corresponding outside water level observation well (12) Height of water level is read three times respectively.
8. a kind of method for quickly judging water-stop curtain construction quality according to claim 1, which is characterized in that step 4 In, judge whether the water level reading value of inside water level observation well (11) and corresponding outside water level observation well (12) meets interior drop When outer rule and water-head with drop is greater than 150mm, the water level read access time of inside water level observation well (11) and corresponding outer The water level read access time interval of side water level observation well (12) is necessarily less than equal to 60s.
9. a kind of method for quickly judging water-stop curtain construction quality according to claim 8, which is characterized in that inside water The water level reading value of position inspection well (11) and corresponding outside water level observation well (12) meets the rule outside interior drop with drop And water-head is when being greater than 150mm, it need to inside water level observation well (11) and corresponding outside water level observation well to the position (12) it is marked, expanded scope is needed to carry out emphasis detection when reminding subsequent accurate detection;If not meeting, without marking, after Center is taken to click through with adjacent inside water level observation well (11) the inside water level observation well (11) of the position when continuous precisely detection Row precisely detection.
CN201811474430.1A 2018-12-04 2018-12-04 A kind of method of quick judgement water-stop curtain construction quality Pending CN109610525A (en)

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CN110763400A (en) * 2019-09-16 2020-02-07 光大环保(盐城)固废处置有限公司 Method and system for detecting defects of vertical impervious curtain
CN111042218A (en) * 2019-11-20 2020-04-21 天津建岩岩土工程有限公司 Method for detecting leakage of pile body
CN111622269A (en) * 2020-06-01 2020-09-04 中国地质科学院矿产综合利用研究所 Method for preventing and controlling pollution of ion type rare earth shallow groundwater

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CN110763400A (en) * 2019-09-16 2020-02-07 光大环保(盐城)固废处置有限公司 Method and system for detecting defects of vertical impervious curtain
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