CN103033460B - The determinator of soil body horizontal osmotic coefficient and method thereof - Google Patents
The determinator of soil body horizontal osmotic coefficient and method thereof Download PDFInfo
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- CN103033460B CN103033460B CN201210576870.4A CN201210576870A CN103033460B CN 103033460 B CN103033460 B CN 103033460B CN 201210576870 A CN201210576870 A CN 201210576870A CN 103033460 B CN103033460 B CN 103033460B
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Abstract
The invention provides the determinator of soil body horizontal osmotic coefficient, it comprises: consolidation box, it places the soil sample that central filler has suction unit, suction unit runs through soil sample, hole is had bottom consolidation box, the side of suction unit is aimed in one end of hole, and the other end of hole leads to the outside of consolidation box; Division board, it covers the side of soil sample, and has hole in the region of corresponding suction unit; Piston, it covers the opposite side of soil sample and the opposite side of suction unit.The present invention also provides the assay method of soil body horizontal osmotic coefficient.The determinator of soil body horizontal osmotic coefficient provided by the invention, respectively by the vertical drainage path of division board and the piston closes soil body, to measure the consolidation deformation of the soil body in horizontal drainage situation, and then calculates the horizontal-hole blasting obtaining soil sample.This determinator is easy to safeguard and install have very strong practicality, conventional chambers consolidometer can be utilized to complete the mensuration of horizontal-hole blasting, effectively utilize existing resource.
Description
Technical field
The present invention relates to engineering material test instrument field, particularly relate to determinator and the method thereof of soil body horizontal osmotic coefficient.
Background technology
In Geotechnical Engineering, perviousness is a fundamental characteristics of the soil body, generally represents with infiltration coefficient.Due to the anisotropy of weak soil in deposition process, the soil body is caused to have different infiltration coefficients in different directions.When applying sedimentation and the prediction TERM DEFORMATION such as dykes and dams, roadbed of numerical method prediction geotextile consolidated subsoil, the size of soil body osmotic coefficient decides the time reaching final settlement, and in the ground reinforced at geotextile, the time that sedimentation completes depends on the size of horizontal-hole blasting.Therefore, the accuracy of TERM DEFORMATION after the direct impact prediction settlement of foundation of accuracy that measures of horizontal-hole blasting and work.
The technology of the infiltration coefficient of the indoor measurement soil body of the existing cohesive soil little for water permeability is generally consolidation permeability test, the method is tested based on one-dimensional consolidation, by the distortion of sample under mensuration constant pressure and the relation of time, and inquire into infiltration coefficient according to consolidation theory.
Publication number is the Chinese patent of 2630839, its practical New Name is " coarse-grained soil infiltration coefficient and soil body penetration deformation tester ", disclose the top hoop of test specimen tube upper end, the end hoop of lower end is connected with upper and lower top cover respectively, upper and lower top cover is arranged threeway, spring spindle, fixing porous plate, can arrange vertical support frame or horizontal stand under test specimen tube.This utility model structure is simple, easy to operate, can survey multiple parameters, but the device of this utility model cannot measure the horizontal-hole blasting of the very little cohesive soil of infiltration coefficient.
Publication number is the Chinese patent of 1737530, its denomination of invention is " a kind of method of testing infiltration coefficient and ratio of resistance seepage slope ", disclose a kind of method of testing infiltration coefficient and ratio of resistance seepage slope, comprise following steps: A. uses the stationary installation be made up of permeable stone Rock And Soil to be fixed on one and can apply on the base of seepage water pressure; B. bottom sample, add infiltration hydraulic pressure Ps; C., after applying seepage water pressure, infiltration water is through sample, and flowed out by the freeing port above stationary installation, freeing port connects water measure equipment; D. seepage water pressure, time and seepage flow is measured, calculation permeability coefficient and ratio of resistance seepage slope.The Rock And Soil infiltration coefficient adopting method of the present invention to measure has very high fiduciary level and precision.But this real invention testing apparatus is complicated, required experimentation cost is large, and when measuring the infiltration coefficient of cohesive soil, required pressure is large, the time is long, cannot accomplish to be out of shape and infiltration coefficient is synchronously measured.
Summary of the invention
Technical matters to be solved by this invention there is provided determinator and the method thereof of soil body horizontal osmotic coefficient, to solve the problem can not measuring soil body horizontal osmotic coefficient in prior art simply.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: the determinator providing a kind of soil body horizontal osmotic coefficient, it comprises: consolidation box, the soil sample that central filler has suction unit is placed in described consolidation box, described suction unit runs through described soil sample, have hole bottom described consolidation box, the side of described suction unit is aimed in one end of described hole, and the other end of described hole leads to the outside of described consolidation box; Division board, described division board covers the side of described soil sample, and has hole in the region of the described suction unit of correspondence; Piston, described piston covers the opposite side of described soil sample and the opposite side of described suction unit.
Further, the determinator of described soil body horizontal osmotic coefficient also comprises soil sample hole making drill.
Further, described soil sample hole making drill is the Circular Thin soil sample barrel of band sword pin.
Further, described suction unit is geotextile.
Further, the determinator of described soil body horizontal osmotic coefficient also comprises the graduated glass tube of mark, and described glass tube is connected with the other end of described hole.
Further, the determinator of described soil body horizontal osmotic coefficient also comprises poly (methyl methacrylate) plate, and the side of described poly (methyl methacrylate) plate covers the opposite side of described soil sample, and described piston contacts with the opposite side of described poly (methyl methacrylate) plate.
Further, described piston has outstanding element away from the side centre of surface of soil sample.
Further, the center of described piston has threaded hole, and described outstanding element mates with described threaded hole, and is fixed on described threaded hole place.
Present invention also offers a kind of assay method of soil body horizontal osmotic coefficient, adopt the determinator of above-mentioned soil body horizontal osmotic coefficient, this assay method comprises: division board is put into consolidation box; Cut soil sample, and described soil sample is put into described consolidation box, the cross section of described soil sample is identical with the cross section of described consolidation box, the central filler suction unit of described soil sample, described suction unit runs through described soil sample, and is in state of saturation, and described division board covers the side of described soil sample; Piston is put into described consolidation box, described piston covers and compresses the opposite side of described soil sample and the opposite side of suction unit; Under described consolidation box is placed on loading system, soil sample is loaded, record the consolidation deformation amount under every one-level load and time; Soil body horizontal osmotic coefficient is calculated according to consolidation deformation amount and time.
Further, use soil sample hole making drill to open circular hole to soil sample, described circular hole runs through described soil sample, in described circular hole, fill geotextile, and described geotextile is by reaching capacity after immersion.
The determinator of soil body horizontal osmotic coefficient provided by the invention, respectively by the vertical drainage path of division board and the piston closes soil body, to measure the consolidation deformation of the soil body in horizontal drainage situation, and then calculates the horizontal-hole blasting obtaining soil sample.This determinator is easy to safeguard and install have very strong practicality, conventional chambers consolidometer can be utilized to complete the mensuration of horizontal-hole blasting, effectively utilize existing resource.
Accompanying drawing explanation
The cross-sectional view of the determinator of the soil body horizontal osmotic coefficient that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the soil sample hole making drill that Fig. 2 provides for the embodiment of the present invention;
The steps flow chart schematic diagram of the assay method of the soil body horizontal osmotic coefficient that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the determinator of a kind of soil body horizontal osmotic coefficient that the present invention proposes and method thereof are described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only for object that is convenient, the aid illustration embodiment of the present invention lucidly.
Core concept of the present invention is, the determinator of the soil body horizontal osmotic coefficient that the present invention proposes, respectively by the vertical drainage path of division board and the piston closes soil body, to measure the consolidation deformation of the soil body in horizontal drainage situation, and then calculate the horizontal-hole blasting obtaining soil sample.This determinator is easy to safeguard and install have very strong practicality, conventional chambers consolidometer can be utilized to complete the mensuration of horizontal-hole blasting, effectively utilize existing resource.
The cross-sectional view of the determinator of the soil body horizontal osmotic coefficient that Fig. 1 provides for the embodiment of the present invention.With reference to Fig. 1, a kind of determinator of soil body horizontal osmotic coefficient is provided, it comprises: consolidation box 11, the soil sample 13 that central filler has suction unit 12 is placed in described consolidation box 11, described suction unit 12 runs through described soil sample 13, have hole bottom described consolidation box 11, the side of described suction unit 12 is aimed in one end of described hole, and the other end of described hole leads to the outside of described consolidation box; Division board 14, described division board 14 covers the side of described soil sample 13, and has hole in the region of the described suction unit 12 of correspondence; Piston 15, described piston 15 covers the opposite side of described soil sample 13 and the opposite side of described suction unit 12.
In embodiments of the present invention, the determinator of described soil body horizontal osmotic coefficient also comprises the graduated glass tube 16 of mark, and described glass tube 16 is connected with the other end of described hole, with the water yield be squeezed out by the water level observation in glass tube 16.
The structural representation of the soil sample hole making drill that Fig. 2 provides for the embodiment of the present invention.With reference to Fig. 2, the determinator of described soil body horizontal osmotic coefficient also comprises soil sample hole making drill, and in the present embodiment, described soil sample hole making drill is the Circular Thin soil sample barrel of band sword pin, cylindrical cavity is opened to soil sample, and makes cylindrical cavity run through soil sample 13.In cylindrical cavity, fill suction unit 12, in the present embodiment, suction unit 12 is geotextile.
Described piston 15 has outstanding element 17 away from the side centre of surface of soil sample 13, and the center of described piston 15 has threaded hole 18, and described outstanding element 17 mates with described threaded hole 18, and is fixed on described threaded hole 18 place.In the present embodiment, described outstanding element 17 is screw rods, after completing the mensuration of horizontal-hole blasting, is extracted by piston 15 by the screw rod on piston 15, soil sample 13 is taken out afterwards, cleaning instrument.Because piston 15 is metal quality, when clearing up the soil sample 13 that it is stained be not as easy as organic glass, therefore, the determinator of described soil body horizontal osmotic coefficient also comprises poly (methyl methacrylate) plate 19, the side of described poly (methyl methacrylate) plate 19 covers the opposite side of described soil sample 13, and described piston 15 contacts with the opposite side of described poly (methyl methacrylate) plate 19.After completing the mensuration of soil body horizontal osmotic coefficient, as long as clear up the poly (methyl methacrylate) plate 19 contacted with soil sample 13, and without the need to clearing up piston 15, be convenient to reuse.
The steps flow chart schematic diagram of the assay method of the soil body horizontal osmotic coefficient that Fig. 3 provides for the embodiment of the present invention.As shown in Figure 3, the assay method of the soil body horizontal osmotic coefficient that the embodiment of the present invention provides, comprises the following steps:
S21, division board is put into consolidation box;
S22, cut soil sample, and described soil sample is put into described consolidation box, the cross section of described soil sample is identical with the cross section of described consolidation box, the central filler suction unit of described soil sample, described suction unit runs through described soil sample, and is in state of saturation, and described division board covers the side of described soil sample;
S23, piston is put into described consolidation box, described piston covers and compresses the opposite side of described soil sample and the opposite side of suction unit;
S24, described consolidation box is placed on loading system under soil sample is loaded, record the consolidation deformation amount under every one-level load and time;
S25, calculate soil body horizontal osmotic coefficient according to consolidation deformation amount and time.
Use soil sample hole making drill to open circular hole to soil sample 13, described circular hole runs through described soil sample 13, in described circular hole, fill geotextile, and described geotextile is by reaching capacity after immersion.Particularly, circular hole is put into by the geotextile immersion saturated later layer layer sheared.Close the bottom surface drainage path of soil sample 13 with division board 14, soil sample 13 is placed the upper drainage path that piston 15 closes soil sample, and piston 15 is cylindrical plate in the present embodiment.The load step of consolidation test conveniently applies consolidation pressure to soil sample 13 afterwards, allows soil sample 13 carry out discharging consolidation in the horizontal direction under pressure, the relation of Measuring Time and consolidation deformation, to solve the horizontal-hole blasting of soil sample further.
Under consolidation box is placed on loading system by the program tested according to indoor one-dimensional consolidation, load to soil sample according to loading sequence, record the consolidation deformation under every one-level load and time, every grade of load duration is 24 hours, in the present embodiment, according to the sequence of event consolidation deformation Δ h of 6s, 10s, 15s, 30s, 60s, 2min, 4min, 8min, 15min, 30min, 1h, 2h, 4h, 8h, 12h, 16h, 20h, 24h, obtain the time square root under every one-level load
with consolidation deformation Δ h.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a determinator for soil body horizontal osmotic coefficient, is characterized in that, comprising:
Consolidation box, place the soil sample that central filler has suction unit in described consolidation box, described suction unit runs through described soil sample, has hole bottom described consolidation box, the side of described suction unit is aimed in one end of described hole, and the other end of described hole leads to the outside of described consolidation box; Also comprise the graduated glass tube of mark, described glass tube is connected with the other end of described hole, with the water yield be squeezed out by the water level observation in glass tube;
Division board, described division board covers the side of described soil sample, and has hole in the region of the described suction unit of correspondence;
Piston, described piston covers the opposite side of described soil sample and the opposite side of described suction unit; Described suction unit is the geotextile of immersion saturated.
2. the determinator of soil body horizontal osmotic coefficient according to claim 1, is characterized in that, also comprises soil sample hole making drill.
3. the determinator of soil body horizontal osmotic coefficient according to claim 2, is characterized in that, described soil sample hole making drill is the Circular Thin soil sample barrel of band sword pin.
4. the determinator of soil body horizontal osmotic coefficient according to claim 1, is characterized in that, also comprises poly (methyl methacrylate) plate, and the side of described poly (methyl methacrylate) plate covers the opposite side of described soil sample, and described piston contacts with the opposite side of described poly (methyl methacrylate) plate.
5. the determinator of soil body horizontal osmotic coefficient according to claim 1, is characterized in that, described piston has outstanding element away from the side centre of surface of soil sample.
6. the determinator of soil body horizontal osmotic coefficient according to claim 5, is characterized in that, the center of described piston has threaded hole, and described outstanding element mates with described threaded hole, and is fixed on described threaded hole place.
7. an assay method for soil body horizontal osmotic coefficient, is characterized in that, adopts the determinator as the soil body horizontal osmotic coefficient in claim 1 ~ 6 as described in any one, comprising:
Described division board is put into described consolidation box;
Cut soil sample, and described soil sample is put into described consolidation box, the cross section of described soil sample is identical with the cross section of described consolidation box, the central filler suction unit of described soil sample, described suction unit runs through described soil sample, and is in state of saturation, and described division board covers the side of described soil sample;
Piston is put into described consolidation box, described piston covers and compresses the opposite side of described soil sample and the opposite side of suction unit;
Under described consolidation box is placed on loading system, soil sample is loaded, record the consolidation deformation amount under every one-level load and time;
Soil body horizontal osmotic coefficient is calculated according to consolidation deformation amount and time.
8. the assay method of soil body horizontal osmotic coefficient according to claim 7, it is characterized in that, use soil sample hole making drill to open circular hole to soil sample, described circular hole runs through described soil sample, in described circular hole, fill geotextile, described geotextile is by reaching capacity after immersion.
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| CN201210576870.4A CN103033460B (en) | 2012-12-26 | 2012-12-26 | The determinator of soil body horizontal osmotic coefficient and method thereof |
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| CN201210576870.4A CN103033460B (en) | 2012-12-26 | 2012-12-26 | The determinator of soil body horizontal osmotic coefficient and method thereof |
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| CN103033460B true CN103033460B (en) | 2015-11-25 |
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| CN104089867B (en) * | 2014-07-15 | 2016-04-27 | 安徽理工大学 | A kind of Rock And Soil water absorption test device |
| CN104359800B (en) * | 2014-10-27 | 2017-07-28 | 同济大学 | Detect that antiseepage curtain wall stops the laboratory testing rig of ion diffusion effect |
| CN108663299A (en) * | 2018-04-20 | 2018-10-16 | 中国电建集团贵阳勘测设计研究院有限公司 | One kind being used for rock original position horizontal permeation test method |
| CN116183460B (en) * | 2022-12-21 | 2024-03-15 | 中山大学 | Roadbed filler permeability testing device and method |
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