CN103882879A - Device and method for detecting depth of foundation pit dewatering - Google Patents
Device and method for detecting depth of foundation pit dewatering Download PDFInfo
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- CN103882879A CN103882879A CN201410119862.6A CN201410119862A CN103882879A CN 103882879 A CN103882879 A CN 103882879A CN 201410119862 A CN201410119862 A CN 201410119862A CN 103882879 A CN103882879 A CN 103882879A
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Abstract
The invention discloses a device and method for detecting the depth of foundation pit dewatering. The detecting device is composed of a hole-forming pipe, a detecting pipe and a ruler rod. The top of the hole-forming pipe is sleeved with a smashing-preventing plate embedded with a gradienter, water leaking holes are distributed in the side wall of the hole-forming pipe, and the bottom end of the hole-forming pipe is a closed end and is provided with a solid conical head. The detecting pipe is arranged inside the hole-forming pipe, the bottom end of the detecting pipe is closed, small water inlet holes are distributed in the side wall of the detecting pipe, and the detecting pipe is wrapped by a sand separating net. The ruler rod is arranged inside the detecting pipe and is made of light materials, the upper portion of the ruler rod is provided with a scale ruler, and the bottom end of the ruler rod is provided with a light hollow ball. The top portion of the ruler rod is sleeved with a vertical cover. When the device is used for detecting the water level, water leaks into the hole-forming pipe, is deposited in a sand depositing area and filtered through the sand separating net and then enters the detecting pipe, the ruler rod inside the detecting pipe rises under the action of buoyancy, the water level height on the scale ruler of the ruler rod is read, and then water level detecting is finished. The device is low in cost, simple in structure, convenient to operate, free of the effect of sediment during detecting, accurate and reliable in detecting result and wide in application range.
Description
Technical field
The present invention relates to field of measuring technique, particularly relate to a kind of foundation pit dewatering depth detection apparatus.
Background technology
At present, if the groundwater table of construction work region is higher, in the construction stage of underground structure, the dewatering of need to taking measures, to meet the construction environment requirement in Underground Construction stage.In prior art, owing to there being certain distance between adjacent dewatering well, the groundwater table absolute altitude of two adjacent dewatering well middle parts all adopts calculated value, designing precipitation water level in " underground waterproof engineering inspection of quality specification " regulation foundation ditch should be lower than foundation ditch bottom surface 0.5m, therefore, need to groundwater table strictly be detected and be controlled, the existing device general structure complexity for groundwater table actual measurement, apply complicated know-why as ultrasonic wave etc., application cost is high, and require harsh to operating personnel's technical level, and the huge scope of application of equipment is narrow, in addition, existing water level detecting equipment is very easily subject to the impact of silt in the time detecting, and testing result is undesirable.In view of above situation, need a kind of cost low, simple in structure, easy to operate, be not subject to silt while detecting affect testing result accurately and reliably and foundation pit dewatering depth detection apparatus applied widely, the requirement detecting to meet Water Level in Foundation Pit.
Summary of the invention
The object of the invention is to provide a kind of foundation pit dewatering depth detection apparatus and detection method, solve the existing device general structure complexity for groundwater table actual measurement, apply complicated know-why as high in ultrasonic wave etc., application cost, operating personnel's technical level is required to problem harsh and that the huge scope of application of equipment is little; Solve existing water level detecting equipment simultaneously and in the time detecting, be very easily subject to the impact of silt, the problem that testing result is undesirable.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of foundation pit dewatering depth detection apparatus, comprise the scale bar in outermost pore-forming pipe and pipe, it is characterized in that: the sidewall of described pore-forming pipe is furnished with water seepage hole, bottom is that sealed end is provided with the integrated underground solid conehead of being convenient to shoot, bottom in described pore-forming pipe pipe is desilting zone, the detector tube that inserts pore-forming pipe is arranged at the top of desilting zone, the bottom of described detector tube is sealed, sidewall is distributed with into water aperture, at least one deck is every husky net for its outer wrapping, and the section diameter that pore-forming pipe is stretched out in described detector tube upper end is larger than pore-forming pipe diameter; Described scale bar is placed in the inside of detector tube, adopts light material to make, and the top body of rod is provided with the rule for reading height of water level, and bottom is provided with the light hollow ball that increases buoyancy; Stretch out from the scale bar preformed hole at vertical cover center on the top of described scale bar, and described vertical cover is to cover the cylindrical cap that is combined in the top of detector tube and is stuck in detector tube periphery.
As the preferred technical solution of the present invention, in the time of construction, the top cover of described pore-forming pipe has the anti-plate of pounding, and the described anti-plate of pounding is provided with and stretches into the backstay that pore-forming pipe inside, external diameter and pore-forming bore adapt, and described backstay side is preventing pounding on plate face to be embedded with level gauge.
As present invention further optimization technical scheme, suitable for reading outer of described pore-forming pipe is arranged with the reinforcement edge fixing for stay cord.
As present invention further optimization technical scheme, described water seepage hole is the evagination hole that can prevent by outside soil clogging, is blossom type and arranges, is located at the latter half of pore-forming pipe sidewall.
As present invention further optimization technical scheme, the length that described detector tube stretches in pore-forming pipe is 2/3～5/6 of pore-forming pipe total length.
As present invention further optimization technical scheme, described level gauge embedding is positioned in rubber ring, and the inside and outside of rubber ring fixed with level gauge, the anti-plate face bonded adhesives of pounding plate respectively.
The invention still further relates to a kind of detection method of utilizing above-mentioned foundation pit dewatering depth detection apparatus to carry out, comprise the following steps:
Step 1, pore-forming pipe is vertically stood up on ground, then pore-forming pipe passes into the anti-backstay of pounding on plate and inserts pore-forming pipe inside;
Step 3, parcel is put into the inside of pore-forming pipe every the detector tube of sand net, its top large outer-diametric portion is stuck in the top of pore-forming pipe;
Step 4, scale bar is put into detector tube, the top of scale bar, through the scale bar preformed hole on vertical cover, is contained in the vertical enclosure at the top of detector tube, ensures that scale bar is always in vertical state;
Step 6, after groundwater table has detected, by rope be stuck in strengthen along upper, slowly pull rope that pore-forming pipe is extracted;
After step 7, pore-forming pipe are extracted, insert in the hole of its insertion with dry fine sand in time.
Compared with prior art, technical advantage of the present invention is: the device structure the present invention relates to is simple, energy continuous detecting, and testing result is directly perceived, measures fast detecting result accurate; Pore-forming pipe adopts evagination hole, is pounded the fashionable soil clogging evagination hole that prevents ground at pore-forming pipe; Described pore-forming pipe bottom is provided with solid conehead, can prevent pore-forming pipe pounded bury destroyed when middle; At the bottom of described pore-forming pipe pipe, than low at the bottom of the pipe of detector tube, form desilting zone, can collect the silt that pore-forming pipe infiltrates in infiltration process; Wrap up every husky net in the outside of detector tube, has effectively blocked the inflow of silt; Scale bar adopts light material, has reduced the impact on underground water level detecting result; After extracting pore-forming pipe when construction, insert in hole with dry fine sand in time, can not exert an influence to ground.Finally, the pore-forming pipe of this equipment, detector tube, scale bar, anti-ly pound plate, vertically cover Deng Junke processing factory and carry out batch preprocessing, machining accuracy is high, and end product quality is easily guaranteed.
brief description of the drawings:
Fig. 1 is the overall structure schematic diagram of foundation pit dewatering depth detection apparatus of the present invention;
Fig. 2 is the structural representation of the pore-forming pipe 1 that the present invention relates to;
Fig. 3 is the structural representation of the detector tube 2 that the present invention relates to;
Fig. 4 is the structural representation of the scale bar 3 that the present invention relates to;
Fig. 5 is the plan structure schematic diagram of the vertical cover 4 that the present invention relates to;
Fig. 6 is the cross-sectional view of A-A in Fig. 5;
Fig. 7 is the anti-structural representation of pounding plate 7 the present invention relates to;
Fig. 8 is the cross-sectional view of B-B in Fig. 7.
Reference numeral: 1-pore-forming pipe, 11-water seepage hole, the solid conehead of 12-, 13-strengthen that edge, 2-detector tube, 3-scale bar, 31-rule, 32-light hollow ball, 4-are vertically covered, 5-scale bar preformed hole, 6-prevent pounding plate, 71-backstay, 72-level gauge, 73-plate face every husky net, 7-.
Detailed description of the invention
The object of the invention is for better the foundation pit dewatering degree of depth being detected, guaranteeing that engineering is produced carries out smoothly, to solve the construction infection problem of underground water to foundation phase, ensures the construction safety in foundation construction stage.
Below in conjunction with accompanying drawing, the present invention will be further described with concrete enforcement, as shown in Fig. 1～6, a kind of foundation pit dewatering depth detection apparatus, comprise the scale bar 3 in outermost pore-forming pipe 1 and pipe, it is characterized in that: the top cover of described pore-forming pipe 1 has the anti-plate 7 of pounding, the described anti-plate face 73 of pounding plate is provided with and stretches into the backstay 71 that pore-forming pipe inside, external diameter and pore-forming bore adapt, described backstay 71 sides are embedded with level gauge 72 anti-pounding on plate, prevent that pounding plate 7 is welded by the thick steel plate of 10mm and the thick steel cylinder of φ 16mm, the long 70mm of steel plate, wide 25mm; Steel cylinder is than the little 4mm of pore-forming bore.Anti-steel plate one end of pounding plate 7 is provided with φ 22 holes, and for level gauge 72 is installed, level gauge 72 embeddings are positioned in rubber ring, rubber ring inside and outside respectively with level gauge, steel plate stick with glue connect fixing; The sidewall of described pore-forming pipe 1 is furnished with water seepage hole 11, described water seepage hole 11 is for can prevent by the evagination hole of outside soil clogging, being blossom type arranges, be located at the latter half of pore-forming pipe sidewall, bottom is that sealed end is provided with the integrated underground solid conehead 12 of being convenient to shoot, and the bottom in described pore-forming pipe pipe is desilting zone, and wherein pore-forming pipe 1 adopts φ 25 coating steel pipes to make, thickness of steel pipe 2.5mm, long 1163mm; Detector tube adopts φ 18 and φ 25 stainless-steel pipes to make, thickness of steel pipe 0.5mm, long 1050mm.Pore-forming pipe lower end 600mm is provided with evagination hole, and blossom type arranges, steel tube surface 1.5mm is protruded in evagination hole, can prevent from being pounded to bury at pore-forming pipe 1 stopping up evagination hole when middle; The reinforcement edge of wide 5mm, high 10mm is established in pore-forming pipe upper end, for prevent upper end pore-forming pipe in the time sinking to soil destroyed and has detected after as lifting fixed point.The detector tube 2 that inserts pore-forming pipe is arranged at the top of desilting zone, the length that described detector tube 2 stretches in pore-forming pipe 1 is 2/3～5/6 of pore-forming pipe total length, the bottom of described detector tube 2 is sealed, the section diameter that pore-forming pipe is stretched out in upper end is larger than pore-forming pipe diameter, top 50mm is φ 25 stainless steel tubes, all the other 1000mm are φ 18 stainless steel tubes, and card is hung in pore-forming pipe 1; Detector tube 2 is put into pore-forming pipe 1000mm, exposes 50mm, and the 500mm place, lower end of detector tube 2 is provided with the circular hole of φ 1mm, blossom type layout, and detector tube 2 use are wrapped up every husky net 6, can prevent that silt from entering in detector tube, in order to avoid affect testing result.Described scale bar 3 is placed in the inside of detector tube 2, employing light material is made, scale bar upper end is provided with the rule 31 of 50cm, indicate scale every 10cm, be used for reading height of water level, scale bar external diameter 10mm, long 1210mm, bottom is provided with φ 12 light hollow balls 32, to increase the buoyancy of scale bar in water; The top of described detector tube 2 is provided with for controlling the vertical vertical cover 4 of scale bar; Stretch out from the φ 12 scale bar preformed holes 5 at vertical cover 4 centers on the top of described scale bar 3, the cylindrical cap that described vertical cover 4 adopts UPVC to make, cover is combined in the top of detector tube 2 and is stuck in detector tube periphery, and the external diameter of the head portion of internal diameter and detector tube 2 adapts.Suitable for reading outer of described pore-forming pipe 1 is arranged with for the fixing reinforcement of stay cord along 13.Described pore-forming pipe 1, detector tube 2, scale bar 3, anti-ly pound plate 7, vertically cover 4 by factory's sizing processing.
The invention still further relates to a kind of detection method of utilizing above-mentioned foundation pit dewatering depth detection apparatus to carry out, comprise the following steps:
Step 1, pore-forming pipe 1 is vertically stood up on ground, then pore-forming pipe passes into the anti-backstay 71 of pounding on plate 7 and inserts pore-forming pipe 1 inside;
Step 3, parcel is put into the inside of pore-forming pipe 1 every the detector tube 2 of husky net 6, its top large outer-diametric portion is stuck in the top of pore-forming pipe 1;
Step 4, scale bar 3 is put into detector tube 2, the top of scale bar 3 is through the scale bar preformed hole 5 on vertical cover 4, by vertically covering 4 tops that are sleeved on detector tube 2, ensures that scale bar 3 is always in vertical state;
Step 6, after groundwater table has detected, by rope be stuck in strengthen along on 13, slowly pull rope that pore-forming pipe 1 is extracted;
After step 7, pore-forming pipe are extracted, insert in the hole of its insertion with dry fine sand in time.
Claims (7)
1. a foundation pit dewatering depth detection apparatus, comprise the scale bar (3) in outermost pore-forming pipe (1) and pipe, it is characterized in that: the sidewall of described pore-forming pipe is furnished with water seepage hole (11), bottom is that sealed end is provided with the integrated underground solid conehead (12) of being convenient to shoot, bottom in described pore-forming pipe pipe is desilting zone, the detector tube (2) that inserts pore-forming pipe is arranged at the top of desilting zone, the bottom of described detector tube (2) is sealed, sidewall is distributed with into water aperture, its outer wrapping at least one deck every husky net (6), the section diameter that pore-forming pipe is stretched out in described detector tube (2) upper end is larger than pore-forming pipe diameter, described scale bar (3) is placed in the inside of detector tube, adopts light material to make, and the top body of rod is provided with the rule (31) for reading height of water level, and bottom is provided with the light hollow ball (32) that increases buoyancy, stretch out from the scale bar preformed hole (5) at vertical cover (4) center on the top of described scale bar (3), and described vertical cover (4) is for covering the cylindrical cap that is combined in the top of detector tube and is stuck in detector tube periphery.
2. a kind of foundation pit dewatering depth detection apparatus according to claim 1, it is characterized in that: the anti-plate (7) of pounding is equipped with at the top of described pore-forming pipe (1), the described anti-plate (7) of pounding is provided with and stretches into the backstay (71) that pore-forming pipe inside, external diameter and pore-forming bore adapt, and on the plate face (73) on described backstay (71) side, is embedded with level gauge (72).
3. a kind of foundation pit dewatering depth detection apparatus according to claim 1, is characterized in that: suitable for reading outer of described pore-forming pipe (1) is arranged with for the fixing reinforcement of stay cord along (13).
4. a kind of foundation pit dewatering depth detection apparatus according to claim 1, is characterized in that: described water seepage hole (11), for can prevent by the evagination hole of outside soil clogging, is blossom type and arranges, is located at the latter half of pore-forming pipe sidewall.
5. a kind of foundation pit dewatering depth detection apparatus according to claim 1, is characterized in that: described level gauge (72) embedding is positioned in rubber ring, rubber ring inside and outside respectively with level gauge, the anti-plate face of pounding plate stick with glue connect fixing.
6. a kind of foundation pit dewatering depth detection apparatus according to claim 1, is characterized in that: the length that described detector tube (2) stretches in pore-forming pipe (1) is 2/3～5/6 of pore-forming pipe total length.
7. a detection method of utilizing the foundation pit dewatering depth detection apparatus described in claim 1～4 any one to carry out, is characterized in that: comprise the following steps:
Step 1, pore-forming pipe (1) is vertically stood up on ground, then pore-forming pipe passes into the anti-backstay (71) of pounding on plate (7) and inserts pore-forming pipe (1) inside;
Step 2, pound plate (7) with hand hammer tapping is anti-, pore-forming pipe (1) is slowly vertically pounded in ground, until the degree of depth of pore-forming pipe (1) below ground meets the demands, pound the balance that keeps level gauge (72) into process;
Step 3, will wrap up the inside of putting into pore-forming pipe (1) every the detector tube (2) of husky net (6), its top large outer-diametric portion is stuck in the top of pore-forming pipe (1);
Step 4, scale bar (3) is put into detector tube (2), the top of scale bar (3) is through the scale bar preformed hole (5) on vertical cover (4), to vertically cover (4) and be sleeved on the top of detector tube (2), ensure that scale bar (3) is always in vertical state;
Step 5, water infiltrate interior detector tube (2) inside that enters through the sedimentation of desilting zone with after the filtration of husky net (6) of pore-forming pipe, the scale bar (3) of detector tube inside rises under buoyancy, and on the rule of scale bar (3), reading height of water level is the water level elevation of ground within the scope of detector tube;
Step 6, after groundwater table has detected, rope is stuck in and strengthens along (13) above, slowly pull rope that pore-forming pipe (1) is extracted;
Step 7, pore-forming pipe (1) are inserted in the hole of its insertion with dry fine sand after extracting in time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410119862.6A CN103882879B (en) | 2014-03-28 | 2014-03-28 | A kind of foundation pit dewatering depth detection apparatus and detection method |
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| CN201410119862.6A CN103882879B (en) | 2014-03-28 | 2014-03-28 | A kind of foundation pit dewatering depth detection apparatus and detection method |
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| CN103882879A true CN103882879A (en) | 2014-06-25 |
| CN103882879B CN103882879B (en) | 2016-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737938A (en) * | 2016-02-24 | 2016-07-06 | 石家庄铁道大学 | Underground water level and deep-seated displacement same-hole monitoring device |
| CN107270992A (en) * | 2017-07-05 | 2017-10-20 | 徐忠 | A kind of liquid level emasuring device of the flotation device of tailings processing |
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| JP2011064619A (en) * | 2009-09-18 | 2011-03-31 | Hokoku Eng Kk | Method for measuring groundwater level |
| CN202024806U (en) * | 2011-04-27 | 2011-11-02 | 刘威 | Underground water level observation device |
| CN202247918U (en) * | 2011-08-05 | 2012-05-30 | 中铁十四局集团有限公司 | Downcast well pipe |
| CN102564676A (en) * | 2012-02-12 | 2012-07-11 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN203834493U (en) * | 2014-03-28 | 2014-09-17 | 中建城市建设发展有限公司 | Detecting device for foundation pit precipitation depth |
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2014
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62240819A (en) * | 1986-04-14 | 1987-10-21 | Nakano Bosai Gijutsu Kenkyusho:Kk | Underground water level measurement with hair-planted filter type bored pipe |
| CN2643293Y (en) * | 2003-10-15 | 2004-09-22 | 江苏省水利科学研究所 | Simple ground water level observer |
| JP2011064619A (en) * | 2009-09-18 | 2011-03-31 | Hokoku Eng Kk | Method for measuring groundwater level |
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| CN203834493U (en) * | 2014-03-28 | 2014-09-17 | 中建城市建设发展有限公司 | Detecting device for foundation pit precipitation depth |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737938A (en) * | 2016-02-24 | 2016-07-06 | 石家庄铁道大学 | Underground water level and deep-seated displacement same-hole monitoring device |
| CN105737938B (en) * | 2016-02-24 | 2018-11-02 | 石家庄铁道大学 | A kind of level of ground water is with deep displacement with hole monitoring device |
| CN107270992A (en) * | 2017-07-05 | 2017-10-20 | 徐忠 | A kind of liquid level emasuring device of the flotation device of tailings processing |
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| Publication number | Publication date |
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| CN103882879B (en) | 2016-04-27 |
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