CN205152930U - Pore pressure cell buries device underground - Google Patents
Pore pressure cell buries device underground Download PDFInfo
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- CN205152930U CN205152930U CN201520887744.XU CN201520887744U CN205152930U CN 205152930 U CN205152930 U CN 205152930U CN 201520887744 U CN201520887744 U CN 201520887744U CN 205152930 U CN205152930 U CN 205152930U
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- pore pressure
- pressure gauge
- embedded device
- paper bag
- clay ball
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Abstract
The utility model discloses a pore pressure cell buries device underground, include: drilling or sleeve pipe are located holing or overlapping intraductal a plurality of filter material layers, pore pressure cell sets up and is in in the filter material layer, just be provided with clay layer between filter material layer and the filter material layer, clay layer is formed by one or more clay ball container bag, clay ball container bag adopts water -soluble drawing paper. The utility model discloses a set up clay ball container bag and can ensure pore pressure cell's the quality of burying underground, avoid testing the data distortion of coming out, ensured the engineering quality.
Description
Technical field
The utility model relates to construction manufacture field, particularly a kind of pore pressure gauge embedded device.
Background technology
Pore pressure gauge is also often called osmometer, is the instrumentation for measuring saturated clay pore water pressure or osmotic pressure.Measured pore water pressure is in order to analyze ground rate of consolidation, and controlling to construct adds the speed of sanction, ensures the stability of crevices during construction.Bury due to pore pressure gauge the accuracy rate being related to long-term observation underground, therefore must require bury underground according to " pore water pressure test procedure " CECS55:93 and " safety monitoring of earth-rockfill dams technical specification " SL551-2012 etc.
Pore pressure gauge takes boring to bury underground more, and its program is first at precalculated position boring also setting of casing, gets into 20cm place darker in projected depth, extracts drilling rod, instrument wire is penetrated drilling rod, pull out from the other end.The tamping of clay mud ball is dropped into, as Sub-sealing Course in boring.And drop into appropriate coarse sand as lower filtering layer, then with drilling rod, pore pressure gauge is delivered to the pre-buried degree of depth, then slowly promote sleeve pipe, pore pressure gauge is made to remove sleeve pipe, now continue to drop into appropriate coarse sand, surrounding equipment sand is filled, as filtration beds, drop into clay ball tamping again as upper sealing, backmost to banket limit tamping, while carry sleeve pipe, until hell, finally test lead is introduced observation case, observe.
According to the method described above, also have a small amount of or without in heavy what and thick slurry situation, the clay ball poured into can dissolve rapidly, becomes mud (being greater than the proportion of medium coarse sand, gravelly sand etc.) at hole wall or sleeve pipe, and clay ball meeting conglomerate in sinking watching, swim in hole.The way taked at present is smash with long waddy etc., but when clay ball meets water, can smash more real and more real, even if it is also of no avail to pour block stone into, finally form the situation all not backfilling filter material up and down, in this situation, complete even if pore pressure gauge is buried underground, test data also greatly distortion out, thus affect workmanship.
Utility model content
The utility model provides a kind of pore pressure gauge embedded device, to solve the above-mentioned technical problem existed in prior art.
For solving the problems of the technologies described above, the utility model provides a kind of pore pressure gauge embedded device, comprise: boring or sleeve pipe, be positioned at multiple anti-filter bed of materials of described boring or sleeve pipe, pore pressure gauge is arranged in the described anti-filter bed of material, and being provided with argillic horizon between the described anti-filter bed of material and the anti-filter bed of material, described argillic horizon is formed by one or more clay ball paper bag, and described clay ball paper bag adopts water-soluble drawing paper.
As preferably, described clay ball paper bag coordinates with described boring or shell clearance.
As preferably, the height of described clay ball paper bag is 50cm ~ 100cm.
As preferably, described clay ball paper bag comprises: be rolled into cylindrically shaped outer layer by described drawing paper and be positioned at the clay ball of this cylindrically shaped outer layer, described cylindrically shaped outer layer two ends are airtight.
As preferably, use adhesive tape or the airtight described cylindric paper bag of stapler.
As preferably, body and the conductive cable contacts position of described pore pressure gauge are provided with jag.
As preferably, the described anti-filter bed of material adopts medium coarse sand, gravelly sand or particle diameter to be less than the shiver stone of 10mm; The thickness of the described anti-filter bed of material is 60 ~ 100cm.
As preferably, the thickness of described argillic horizon is not less than 100cm.
Compared with prior art, the utility model has the following advantages:
1, the utility model utilizes clay ball paper bag, clay ball is not directly contacted with water, adopts simultaneously and meet the drawing paper that water melts, has certain toughness etc. slowly, avoid drawing paper to affect the accuracy of measurement of follow-up pore pressure gauge, ensure that workmanship, qualification rate reaches 99.9-100%.
2, bury pore water pressure timing underground can not be damaged;
3, suit measures to local conditions, clay ball paper bag can be made with cohesive soil that is air-dry or that dry, the cost of 50% can be saved.
Accompanying drawing explanation
Fig. 1 be pore pressure gauge of the present utility model bury schematic flow sheet underground;
Fig. 2 is the structural representation of pore pressure gauge embedded device of the present utility model.
Detailed description of the invention
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail detailed description of the invention of the present utility model below in conjunction with accompanying drawing.It should be noted that, the utility model accompanying drawing all adopts the form of simplification and all uses non-ratio accurately, only in order to object that is convenient, aid illustration the utility model embodiment lucidly.
As depicted in figs. 1 and 2, the utility model provides a kind of pore pressure gauge embedded device, this device comprises: boring or sleeve pipe 10, be positioned at multiple anti-filter bed of materials 30 of described boring or sleeve pipe 10, pore pressure gauge 20 is arranged in the described anti-filter bed of material 30, and being provided with argillic horizon 40 between the described anti-filter bed of material 30 and the anti-filter bed of material 30, described argillic horizon 40 is formed by one or more clay ball paper bag, and described clay ball paper bag adopts water-soluble drawing paper.
Particularly, ask emphasis with reference to Fig. 2, the WG 20 in the present embodiment is provided with three groups, and therefore, the described anti-filter bed of material 30 has three layers, further, is positioned on the anti-filter bed of material 30 of the superiors, is provided with argillic horizon 40 too.
Described clay ball paper bag comprises: be rolled into cylindrically shaped outer layer by described drawing paper and be positioned at the clay ball of this cylindrically shaped outer layer, described cylindrically shaped outer layer two ends are airtight, further, can use adhesive tape or the airtight described cylindric paper bag of stapler.
Preferably, the manufacturing step of described clay ball paper bag comprises: first, calculates the aperture of boring or sleeve pipe 10, determines the diameter of clay ball paper bag; Then, prepare drawing paper and be also rolled into cylindric by described drawing paper, the diameter of this cylindric paper bag is slightly less than the aperture of boring or sleeve pipe 10, such as: aperture is 110mm, and the cylindric paper bag diameter of making is 100mm; As aperture 130mm, the cylindric paper bag diameter of making is 120mm; In other words, the clay ball paper bag after having manufactured and described boring or sleeve pipe 10 matched in clearance, can guarantee that described clay ball paper bag can drop to corresponding position smoothly.Then, use one end of adhesive tape or stapler inclose official form for filing a lawsuit bag, and load clay ball from the other end; Re-use the other end of adhesive tape or stapler inclose official form for filing a lawsuit bag thus complete the making of clay ball paper bag.Described clay ball paper bag after having manufactured is a complete cylinder, and this cylindrical height is 50cm ~ 100cm, so can guarantee that the verticality of clay ball paper bag and boring or sleeve pipe 10 is consistent.The utility model is by arranging described clay ball paper bag, and that can guarantee pore pressure gauge 20 buries quality underground, avoids the data distortion testing out, ensure that workmanship.
Please refer to Fig. 1, the utility model provides a kind of forming process of pore pressure gauge embedded device as follows:
Step 1: hole in precalculated position or bury sleeve pipe underground, boring or sleeve pipe 10 are understood through fine sand layer 200 in silt soil strata 100 usually, and pore pressure gauge mostly 20 is arranged in silt soil strata 100;
Step 2: the aperture according to boring or sleeve pipe 10 manufactures clay ball paper bag, cleaning boring simultaneously or sleeve pipe 10, all clean out the heavy what in boring or sleeve pipe 10 and thick slurry with water, carry brill; Further, a lot of use the chemical article with severe corrosive because drilling fluid has, cleaning step is absolutely necessary, and therefore step 2 of the present utility model synchronously can be carried out with original cleaning step, with cost-saving and raise the efficiency.
Step 3: put into pore pressure gauge 20 in boring or sleeve pipe 10; described pore pressure gauge 20 is positioned at below prescribed depth; specifically be positioned at 1 ~ 2m place below prescribed depth; this is because boring or sleeve pipe 10 wash clean again; also have oarse-grained gravelly sand or clay and sink to bottom, pore pressure gauge 20 can be protected like this.
Step 4: import the anti-filter bed of material 30 in boring or sleeve pipe 10, treat 5-6min, after the described anti-filter bed of material 30 is stable, mention described pore pressure gauge 20 to prescribed depth, preferably, the body of described pore pressure gauge 20 and the contact position place of cable 50 are provided with jag, this jag can be guaranteed when carrying dynamic pore water pressure meter 20 up and down, only cable 50 firmly, not exerting oneself in the contact site of pore pressure gauge 20 and cable 50, avoids described pore pressure gauge 20 excessive and damage with cable 50 contact position Yin Lali; As preferably, the described anti-filter bed of material 30 adopts medium coarse sand, gravelly sand or particle diameter to be less than the shiver stone of 10mm; The thickness of described filter material 30 is 60 ~ 100cm.
Step 5: described clay ball paper bag is put into boring or sleeve pipe 10, proportion due to water is far smaller than the proportion of clay ball paper bag, therefore described clay ball paper bag can sink rapidly, till cannot see the bubble in water, guarantee that clay ball paper bag sinks completely, forms argillic horizon 40; This step, if carry out in sleeve pipe, also can carry sleeve pipe above, but should not propose too much.
As preferably, the thickness of described argillic horizon 40 is not less than 100cm, therefore, needs the clay ball paper bag number put into be at least 2 in this step.
Step 6: repeat step 3 to step 5 until complete all pore pressure gauges 20 bury work underground.As shown in Figure 2, the number of the pore pressure gauge 20 in the present embodiment is 3, and therefore, step 3-5 need repeat 3 times altogether.
Further, when complete all pore pressure gauges 20 all bury action underground after, for guaranteeing stability, also need increase thickness on the argillic horizon 40 of boring or sleeve pipe 10 the superiors, specifically thickening 1 ~ 2m.
In sum, pore pressure gauge embedded device of the present utility model, comprise: boring or sleeve pipe 10, be positioned at multiple anti-filter bed of materials 30 of described boring or sleeve pipe 10, pore pressure gauge 20 is arranged in the described anti-filter bed of material 30, and being provided with argillic horizon 40 between the described anti-filter bed of material 30 and the anti-filter bed of material 30, described argillic horizon 40 is formed by one or more clay ball paper bag, and described clay ball paper bag adopts water-soluble drawing paper.The utility model buries quality underground by what arrange that clay ball paper bag can guarantee pore pressure gauge, avoids the data distortion testing out, ensure that workmanship.
Obviously, those skilled in the art can carry out various change and modification to utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (9)
1. a pore pressure gauge embedded device, it is characterized in that, comprise: boring or sleeve pipe, be positioned at multiple anti-filter bed of materials of described boring or sleeve pipe, pore pressure gauge is arranged in the described anti-filter bed of material, and being provided with argillic horizon between the described anti-filter bed of material and the anti-filter bed of material, described argillic horizon is formed by one or more clay ball paper bag, and described clay ball paper bag adopts water-soluble drawing paper.
2. pore pressure gauge embedded device as claimed in claim 1, it is characterized in that, described clay ball paper bag coordinates with described boring or shell clearance.
3. pore pressure gauge embedded device as claimed in claim 1, it is characterized in that, the height of described clay ball paper bag is 50cm ~ 100cm.
4. pore pressure gauge embedded device as claimed in claim 1, it is characterized in that, described clay ball paper bag comprises: be rolled into cylindrically shaped outer layer by described drawing paper and be positioned at the clay ball of this cylindrically shaped outer layer, described cylindrically shaped outer layer two ends are airtight.
5. pore pressure gauge embedded device as claimed in claim 4, is characterized in that, uses the two ends of adhesive tape or the airtight described cylindric paper bag of stapler.
6. pore pressure gauge embedded device as claimed in claim 1, it is characterized in that, body and the conductive cable contacts position of described pore pressure gauge are provided with jag.
7. pore pressure gauge embedded device as claimed in claim 1, is characterized in that, the described anti-filter bed of material adopts medium coarse sand, gravelly sand or particle diameter to be less than the shiver stone of 10mm.
8. pore pressure gauge embedded device as claimed in claim 1, it is characterized in that, the thickness of the described anti-filter bed of material is 60 ~ 100cm.
9. pore pressure gauge embedded device as claimed in claim 1, it is characterized in that, the thickness of described argillic horizon is not less than 100cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887744.XU CN205152930U (en) | 2015-11-09 | 2015-11-09 | Pore pressure cell buries device underground |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887744.XU CN205152930U (en) | 2015-11-09 | 2015-11-09 | Pore pressure cell buries device underground |
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| Publication Number | Publication Date |
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| CN205152930U true CN205152930U (en) | 2016-04-13 |
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| CN201520887744.XU Active CN205152930U (en) | 2015-11-09 | 2015-11-09 | Pore pressure cell buries device underground |
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| CN (1) | CN205152930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411646A (en) * | 2019-07-09 | 2019-11-05 | 中铁十四局集团大盾构工程有限公司 | Formation pore hydraulic pressure force test device, production method and its application method after a kind of shield tunnel wall |
| CN111705773A (en) * | 2020-05-12 | 2020-09-25 | 温州大学 | Movable pore water pressure tester |
-
2015
- 2015-11-09 CN CN201520887744.XU patent/CN205152930U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411646A (en) * | 2019-07-09 | 2019-11-05 | 中铁十四局集团大盾构工程有限公司 | Formation pore hydraulic pressure force test device, production method and its application method after a kind of shield tunnel wall |
| CN111705773A (en) * | 2020-05-12 | 2020-09-25 | 温州大学 | Movable pore water pressure tester |
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