CN204903309U - Soil cement seepage deformation testing arrangement - Google Patents
Soil cement seepage deformation testing arrangement Download PDFInfo
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- CN204903309U CN204903309U CN201520674570.9U CN201520674570U CN204903309U CN 204903309 U CN204903309 U CN 204903309U CN 201520674570 U CN201520674570 U CN 201520674570U CN 204903309 U CN204903309 U CN 204903309U
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- soil cement
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- gland
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Abstract
The utility model discloses a soil cement seepage deformation testing arrangement, including pressure chamber, soil cement laying -out chamber, flood peak control system and confined pressure system, the pressure chamber includes the sealed cowling and installs in the upper cover and the base at sealed cowling both ends through the fastener, and the sealed cowling is for taking the cylindric steel cylinder of internal screw thread, and soil cement laying -out chamber includes to cup joint in the gland of sealed cowling inner chamber, a plurality of setting through the external screw thread and be used for the cover locate the rubber membrane in the soil cement sample outside and place in the permeable stone at soil cement sample both ends between gland and base, the pressure chamber inner chamber with the play water end (W. E. ) of confined pressure system intercommunication, the permeable stone of soil cement laying -out chamber upper end and flood peak control system's play water end (W. E. ) intercommunication, the permeable stone of soil cement laying -out chamber lower extreme are equipped with disappointing hole with surveying seepage flow buret intercommunication and cover on, and the lateral wall of sealed cowling is equipped with manometer and water inlet. The utility model has the advantages of compact structure, convenient operation, cheap cost, accommodation are extensively.
Description
Technical field
The utility model relates to the soil test such as Hydraulic and Hydro-Power Engineering, civil engineering work field, especially for the proving installation of the soil cement seepage deformation characterisitic parameter of low-permeability.
Background technology
Soil cement is mixed according to a certain ratio by water, cement, soil, has environmental friendliness and cost is low, is widely used in reservoir grout curtain, the engineerings such as dam cut-off wall.Soil cement is as the important component part of impervious body, and its seepage deformation characteristic is the important parameter of seepage control engineering design.Indoor physical model test is effective way and the method for determining soil cement seepage deformation characteristic.Such as: the people such as Zheng Ruihua propose " large-scale cohesionless soil permeability experiment system and application " (see " experimental technique and management " the 5th phase in 2007), the people such as Gu Jin summary propose " research of servocontrol soil-rock mixture pressure permeation instrument " (see " engineering geology journal " 2009 17 (5)), the permeability coefficient of cement soil determinator (CN101603913B) of Song Xinjiang development, the soil cement seepage deformation instrument (CN202421030U) of the development such as Zhu Chonghui, crude tailings gelling aggregate seepage flow with consolidation combined test device (CN104729922A) of the development such as Xu Wenbin, concrete for hydraulic structure load permeance property proving installation (CN101074912A) of development such as to turn round and look at when rushing.
In general, domestic and international existing permeation deformation test apparatus once can only be tested a sample, for determining soil cement critical hydraulic gradient, test of many times need be carried out, and the cycle of seepage failure test is longer, and existing apparatus many employings triaxial apparatus tectonic stress environment, with high costs.
Therefore, develop a kind of soil cement seepage deformation proving installation, multiple sample is tested simultaneously, reasonably to determine the indexs such as the critical hydraulic gradient of seepage control engineering design, become the problem that this area related personnel is badly in need of researching and solving.
Utility model content
The technical problems to be solved in the utility model overcomes the deficiencies in the prior art, provides the soil cement seepage deformation proving installation of a kind of compact conformation, easy to operate, low cost, wide accommodation.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is:
A kind of soil cement seepage deformation proving installation, comprise pressure chamber, soil cement setting-out chamber, head control system and confined pressure system, described pressure chamber is comprised seal closure and is installed in upper cover and the base at seal closure two ends by securing member, described seal closure is that (internal diameter is preferably 400 ~ 500mm to tapped cylindric steel cylinder, wall thickness 8 ~ 15mm), described soil cement setting-out chamber comprises the gland being connected to seal closure inner chamber by external thread sleeve, multiple being arranged to be used for the rubber diaphragm be sheathed on outside soil cement sample and the permeable stone being positioned over soil cement sample two ends between described gland and base, described pressure chamber inner chamber is communicated with the water side of described confined pressure system, the permeable stone of upper end, described soil cement setting-out chamber is communicated with the water side of described head control system, the permeable stone of lower end, soil cement setting-out chamber is communicated with survey seepage flow buret, cover on described and be provided with bleeder port, the sidewall of seal closure is provided with tensimeter and water inlet.
As further improvement of the utility model:
Above-mentioned soil cement seepage deformation proving installation, preferably, described head control system comprises nitrogen cylinder, high pressure water tank and many drilling rods (external diameter is preferably 50mm), (internal diameter is preferably 500mm to the pressure vessel of described high pressure water tank, height is 1200mm, wall thickness 15mm) top is provided with air intake opening, water inlet, tensimeter and bleeder port, bottom is provided with multiple water delivering orifice, described nitrogen cylinder is communicated with the air intake opening of high pressure water tank by the flexible pipe being provided with reduction valve, each water delivering orifice of high pressure water tank is all by being provided with soft pipe connection drilling rod of flowmeter, the water side of drilling rod is communicated with the permeable stone of gland with upper end, soil cement setting-out chamber through described upper cover.
Above-mentioned soil cement seepage deformation proving installation, preferably, described confined pressure system comprises nitrogen cylinder and small pressure container, described small pressure container comprises cylinder steel cylinder, and (internal diameter is preferably 50mm, height is 180mm, wall thickness 12mm) and the upper flange lid at sealing cylinder steel cylinder two ends and lower flange lid, described upper flange covers and is provided with air intake opening and water inlet, nitrogen cylinder is communicated with by the air intake opening of the flexible pipe with small pressure container that are provided with reduction valve, described cylinder steel cylinder sidewall is provided with tensimeter and water delivering orifice, the water delivering orifice of cylinder steel cylinder is communicated with by the water inlet of flexible pipe with described seal closure.
Above-mentioned soil cement seepage deformation proving installation, preferably, cover on described and be provided with multiple drilling rod through hole and be equipped with orifice tube (internal diameter is preferably 89mm) in each drilling rod through hole, described drilling rod passes described upper cover through orifice tube and drilling rod through hole, sealed by orifice closure between drilling rod and orifice tube, the water inlet end of drilling rod arranges tensimeter.
Above-mentioned soil cement seepage deformation proving installation, preferably, described base comprises circular steel plate, and (diameter is preferably 550mm, thick 15mm), described circular steel plate is arranged the projection being used for fixing soil cement sample, each high spot all arranges 1 seepage flow hole, and the permeable stone of lower end, described soil cement setting-out chamber to be positioned in described projection and to be communicated with the survey seepage flow buret through described seepage flow hole.
Above-mentioned soil cement seepage deformation proving installation, preferably, described gland comprises the cross external thread steel plate (thickness is preferably 15mm) be connected with seal closure thread in inner cavity, described cross external thread steel plate is provided with sample gland, sample gland is provided with tapped through hole, and described drilling rod passes described gland by described tapped through hole.
Above-mentioned soil cement seepage deformation proving installation, preferably, is provided with anchor ear outside described rubber diaphragm.
Above-mentioned soil cement seepage deformation proving installation, preferably, the bottom of described high pressure water tank is provided with travel(l)ing rest.
Compared with prior art, the utility model has the advantage of:
(1) the utility model provides an annular water confined pressure system by base, upper cover, seal closure, rubber pattern, gland, head control system and confined pressure system, replaces triaxial apparatus and applies soil cement ambient stress, greatly can reduce expense.
(2) the utility model can arrange multiple soil cement setting-out chamber and corresponding experimental system thereof, can test simultaneously, thus reasonably can determine the critical hydraulic gradient of certain proportioning soil cement to multiple sample.
(3) head of the present utility model and pressure environment are all applied by nitrogen cylinder and reduction valve, can carry out tired packer permeability test to study the permanance of soil cement.
Accompanying drawing explanation
Fig. 1 is the structural representation of soil cement seepage deformation proving installation of the present utility model.
Marginal data:
1, nitrogen cylinder; 2, reduction valve; 3, flexible pipe; 4, air intake opening; 5, water inlet; 6, tensimeter; 7, bleeder port; 8, inlet valve; 9, high pressure water tank; 10, travel(l)ing rest; 11, water delivering orifice; 12, orifice closure; 13, orifice tube; 14, upper cover; 15, drilling rod; 16, gland; 17, soil cement sample; 18, seal closure; 19, permeable stone; 20, securing member; 21, small pressure container; 22, seepage flow buret is surveyed; 23, base; 24, flowmeter.
Embodiment
For the ease of understanding the utility model, hereafter will do to describe more comprehensively, meticulously to the utility model in conjunction with Figure of description and concrete preferred embodiment, but protection domain of the present utility model is not limited to following specific embodiment.
As shown in Figure 1, soil cement seepage deformation proving installation embodiment of the present utility model, comprise pressure chamber, soil cement setting-out chamber, head control system and confined pressure system, pressure chamber comprises upper cover 14, base 23 and seal closure 18, seal closure 18 is tapped cylindric steel cylinder, upper cover 14 and base 23 are sealedly attached to the two ends of cylindric steel cylinder respectively by securing member 20, and upper cover 14 is provided with bleeder port 7, and the sidewall of cylindric steel cylinder is provided with tensimeter 6 and water inlet 5 and inlet valve 8.Soil cement setting-out chamber comprises 16,3, the gland (also can arrange more) being connected to cylindric steel cylinder inner chamber by external thread sleeve and is used for the rubber membrane be sheathed on outside soil cement sample 17 and the permeable stone 19 being positioned over soil cement sample 17 two ends, rubber membrane and permeable stone 19 are all arranged between gland 16 and base 23, are also provided with anchor ear outside rubber membrane.Pressure chamber's inner chamber is communicated with the water side of confined pressure system, and the permeable stone 19 of upper end, soil cement setting-out chamber is communicated with the water side of head control system, and the permeable stone 19 of lower end, soil cement setting-out chamber is communicated with survey seepage flow buret 22.Rubber membrane in soil cement setting-out chamber flexibility can be close to soil cement sample under the effect of confined pressure system, thus avoids the problem of soil cement sample sidewall seepage, and forms corresponding ambient stress.The utility model provides an annular water confined pressure system by base, upper cover, seal closure, rubber pattern, gland, head control system and confined pressure system, replaces triaxial apparatus and applies soil cement ambient stress, greatly can reduce expense.Multiple soil cement setting-out chamber and corresponding experimental system thereof are set, can test multiple sample simultaneously, thus reasonably can determine the critical hydraulic gradient of certain proportioning soil cement.
In the present embodiment, head control system comprises nitrogen cylinder 1, high pressure water tank 9 and 3 drilling rods 15, the pressure vessel top of high pressure water tank 9 is provided with air intake opening 4, water inlet 5, tensimeter 6 and bleeder port 7, bottom is provided with 3 water delivering orifices 11, nitrogen cylinder 1 is communicated with by the air intake opening 4 of the flexible pipe 3 with high pressure water tank 9 that are provided with reduction valve 2, and each water delivering orifice 11 of high pressure water tank 9 is all communicated with a drilling rod 15 by the flexible pipe 3 being provided with flowmeter 24; Upper cover 14 is provided with 3 drilling rod through holes and is provided with orifice tube 13 in each drilling rod through hole, and drilling rod 15 passes upper cover 14 through orifice tube 13 and drilling rod through hole, and sealed by orifice closure 12 between drilling rod 15 and orifice tube 13, the water inlet end of drilling rod 15 arranges tensimeter 6; Gland 16 comprises the cross external thread steel plate be connected with seal closure 18 thread in inner cavity, cross external thread steel plate is provided with sample gland, sample gland is provided with tapped through hole, the water side of drilling rod 15 is communicated with the permeable stone 19 of upper end, soil cement setting-out chamber through after the drilling rod through hole of upper cover 14 and the tapped through hole of gland 16, and the bottom of high pressure water tank 9 is provided with travel(l)ing rest 10.
In the present embodiment, base 23 comprises circular steel plate, and circular steel plate is arranged the projection being used for fixing soil cement sample 17, each high spot all arranges 1 seepage flow hole, the permeable stone 19 of lower end, soil cement setting-out chamber is positioned in projection, and is communicated with the survey seepage flow buret 22 through seepage flow hole.
In the present embodiment, confined pressure system comprises nitrogen cylinder 1 and small pressure container 21, small pressure container 21 comprises upper flange lid and the lower flange lid at cylinder steel cylinder and sealing cylinder steel cylinder two ends, upper flange covers and is provided with air intake opening 4, water inlet 5 and inlet valve 8, nitrogen cylinder 1 is communicated with by the air intake opening 4 of the flexible pipe 3 with small pressure container 21 that are provided with reduction valve 2, cylinder steel cylinder sidewall is provided with tensimeter 6 and water delivering orifice 11, and the water delivering orifice 11 of cylinder steel cylinder is communicated with the water inlet 5 of seal closure 18 with inlet valve 8 by flexible pipe 3.
In the present embodiment, the cylindric cylinder diameter of seal closure 18 is that 400 ~ 500mm(is preferably 460mm), wall thickness 8 ~ 15mm(is preferably 10mm).The cross external thread steel plate of gland 16 is thick is 15mm.The circular steel board diameter of base 23 is 550mm, thick 15mm.The external diameter of drilling rod 15 is 50mm; The internal diameter of orifice tube 13 is 89mm.The pressure vessel internal diameter of high pressure water tank 9 is 500mm, and height is 1200mm, wall thickness 15mm.The cylinder steel cylinder internal diameter of small pressure container 21 is 50mm, and height is 180mm, wall thickness 12mm.
The principle of work of soil cement seepage deformation proving installation of the present utility model is:
(1) sample and proving installation are installed.First 3 soil cement samples 17 are arranged on the base 23 of placement permeable stone 19, after the painting of soil cement sample 17 sidewall is thin-layer bituminous, outside soil cement sample 17, overlap rubber membrane; Then seal closure 18 and survey seepage flow buret 22 are spliced with base 23, on soil cement sample 17 top, permeable stone 19 is all installed, and screws cross external thread steel plate, gland 16 is pushed down and fixes soil cement sample 17, drilling rod 15 and gland 16 are connected; Thereafter by upper cover 14 by securing member 20(such as bolt) be sealedly attached to the top of seal closure 18, then orifice closure 12 to be arranged on the orifice tube 13 of upper cover 14, and to lock drilling rod 15 by screwing orifice closure 12; Last at drilling rod 15 top setting pressure table 6, and by flexible pipe 3, drilling rod 15 and high pressure water tank 9, high pressure water tank 9 are connected with nitrogen cylinder 1 with small pressure container 21, small pressure container 21 with nitrogen cylinder 1, seal closure 18.
(2) confined pressure is applied.Open the inlet valve 8 of seal closure 18 and the inlet valve 8 of small pressure container 21, make be full of water in seal closure 18 and discharge air, treat that bleeder port 7 water outlet of upper cover 14 then closes two inlet valves 8 continuously, and open the nitrogen cylinder 1 of confined pressure system, be forced into setting value by reduction valve 2.
(3) saturation water soil sample.Open the inlet valve 8 of high pressure water tank 9, make be full of water in drilling rod 15 and discharge air, treat that bleeder port 7 water outlet of high pressure water tank 9 then closes inlet valve 8 continuously, and open the nitrogen cylinder 1 of head control system, be forced into 0.1MPa by reduction valve 2.
(4) measure its anti-permeability strength and calculate critical hydraulic gradient.Seepage flow buret 22 to be measured starts water outlet, then starting head classification increases step by step, and initial value is 0.1MPa, and every one-level loads one hour, and added value gets 0.1MPa, and records its rate of discharge under every one-level by surveying seepage flow buret 22, obtains P ~ Q relation curve.Curve has two flex points, and hydraulic gradient corresponding to its second flex point is critical hydraulic gradient, and can evaluate its permanance to a certain extent.
Below be only preferred implementation of the present utility model, all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, not departing from the some improvements and modifications under the utility model principle prerequisite, protection domain of the present utility model should be considered as.
Claims (9)
1. a soil cement seepage deformation proving installation, it is characterized in that: comprise pressure chamber, soil cement setting-out chamber, head control system and confined pressure system, described pressure chamber is comprised seal closure and is installed in upper cover and the base at seal closure two ends by securing member, described seal closure is tapped cylindric steel cylinder, described soil cement setting-out chamber comprises the gland being connected to seal closure inner chamber by external thread sleeve, multiple being arranged to be used for the rubber diaphragm be sheathed on outside soil cement sample and the permeable stone being positioned over soil cement sample two ends between described gland and base, described pressure chamber inner chamber is communicated with the water side of described confined pressure system, the permeable stone of upper end, described soil cement setting-out chamber is communicated with the water side of described head control system, the permeable stone of lower end, soil cement setting-out chamber is communicated with survey seepage flow buret, cover on described and be provided with bleeder port, the sidewall of seal closure is provided with tensimeter and water inlet.
2. soil cement seepage deformation proving installation according to claim 1, it is characterized in that: described head control system comprises nitrogen cylinder, high pressure water tank and many drilling rods, the pressure vessel top of described high pressure water tank is provided with air intake opening, water inlet, tensimeter and bleeder port, bottom is provided with multiple water delivering orifice, described nitrogen cylinder is communicated with the air intake opening of high pressure water tank by the flexible pipe being provided with reduction valve, each water delivering orifice of high pressure water tank is all by being provided with soft pipe connection drilling rod of flowmeter, the water side of drilling rod is communicated with the permeable stone of gland with upper end, soil cement setting-out chamber through described upper cover.
3. soil cement seepage deformation proving installation according to claim 2, it is characterized in that: described confined pressure system comprises nitrogen cylinder and small pressure container, described small pressure container comprises upper flange lid and the lower flange lid at cylinder steel cylinder and sealing cylinder steel cylinder two ends, described upper flange covers and is provided with air intake opening and water inlet, nitrogen cylinder is communicated with by the air intake opening of the flexible pipe with small pressure container that are provided with reduction valve, described cylinder steel cylinder sidewall is provided with tensimeter and water delivering orifice, and the water delivering orifice of cylinder steel cylinder is communicated with by the water inlet of flexible pipe with described seal closure.
4. soil cement seepage deformation proving installation according to claim 3, it is characterized in that: cover on described and be provided with multiple drilling rod through hole and be equipped with orifice tube in each drilling rod through hole, described drilling rod passes described upper cover through orifice tube and drilling rod through hole, sealed by orifice closure between drilling rod and orifice tube, the water inlet end of drilling rod arranges tensimeter.
5. soil cement seepage deformation proving installation according to claim 4, it is characterized in that: described base comprises circular steel plate, described circular steel plate is arranged the projection being used for fixing soil cement sample, each high spot all arranges 1 seepage flow hole, and the permeable stone of lower end, described soil cement setting-out chamber to be positioned in described projection and to be communicated with the survey seepage flow buret through described seepage flow hole.
6. soil cement seepage deformation proving installation according to claim 5, it is characterized in that: described gland comprises the cross external thread steel plate be connected with seal closure thread in inner cavity, described cross external thread steel plate is provided with sample gland, sample gland is provided with tapped through hole, and described drilling rod passes described gland by described tapped through hole.
7. soil cement seepage deformation proving installation according to claim 6, is characterized in that: the steel cylinder internal diameter of described seal closure is 400 ~ 500mm, wall thickness 8 ~ 15mm; The cross external thread steel plate of described gland is thick is 15mm; The circular steel board diameter of described base is 550mm, thick 15mm; Described drilling rod external diameter is 50mm; Described orifice tube internal diameter is 89mm; The pressure vessel internal diameter of described high pressure water tank is 500mm, and height is 1200mm, wall thickness 15mm; The cylinder steel cylinder internal diameter of described small pressure container is 50mm, and height is 180mm, wall thickness 12mm.
8. the soil cement seepage deformation proving installation according to any one of claim 1-7, is characterized in that: be provided with anchor ear outside described rubber diaphragm.
9. the soil cement seepage deformation proving installation according to any one of claim 2-7, is characterized in that: the bottom of described high pressure water tank is provided with travel(l)ing rest.
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| CN201520674570.9U CN204903309U (en) | 2015-09-02 | 2015-09-02 | Soil cement seepage deformation testing arrangement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107764654A (en) * | 2017-09-21 | 2018-03-06 | 山东大学 | A kind of more test block seepage flow test devices and application method |
| CN108362626A (en) * | 2018-05-16 | 2018-08-03 | 浙江工业大学 | A kind of fexible unit measuring concrete water, impervious coefficient |
| CN108414416A (en) * | 2018-01-29 | 2018-08-17 | 中国矿业大学 | A kind of more sample infiltration coefficients test and comparison means and method |
| CN114047100A (en) * | 2021-10-20 | 2022-02-15 | 长沙理工大学 | Test device for measuring rising height and rate of porous medium capillary water |
| CN114235593A (en) * | 2021-12-16 | 2022-03-25 | 河海大学 | Hydraulic building high-molecular waterproof coating hydraulic pressure bonding failure test device and test method |
| CN117347237A (en) * | 2023-08-24 | 2024-01-05 | 南京交通职业技术学院 | Flexible wall structure for preventing dirt mud solidification heavy metal infiltration |
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2015
- 2015-09-02 CN CN201520674570.9U patent/CN204903309U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764654A (en) * | 2017-09-21 | 2018-03-06 | 山东大学 | A kind of more test block seepage flow test devices and application method |
| CN108414416A (en) * | 2018-01-29 | 2018-08-17 | 中国矿业大学 | A kind of more sample infiltration coefficients test and comparison means and method |
| CN108362626A (en) * | 2018-05-16 | 2018-08-03 | 浙江工业大学 | A kind of fexible unit measuring concrete water, impervious coefficient |
| CN114047100A (en) * | 2021-10-20 | 2022-02-15 | 长沙理工大学 | Test device for measuring rising height and rate of porous medium capillary water |
| CN114047100B (en) * | 2021-10-20 | 2023-12-15 | 长沙理工大学 | Test device for measuring capillary water elevation and capillary water velocity of porous medium |
| CN114235593A (en) * | 2021-12-16 | 2022-03-25 | 河海大学 | Hydraulic building high-molecular waterproof coating hydraulic pressure bonding failure test device and test method |
| CN114235593B (en) * | 2021-12-16 | 2024-04-19 | 河海大学 | Hydraulic bond damage test device and test method for high molecular waterproof coating of hydraulic building |
| CN117347237A (en) * | 2023-08-24 | 2024-01-05 | 南京交通职业技术学院 | Flexible wall structure for preventing dirt mud solidification heavy metal infiltration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20190902 |