CN204374042U - A kind of constant head apparatus for measuring permeability coefficient - Google Patents

A kind of constant head apparatus for measuring permeability coefficient Download PDF

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Publication number
CN204374042U
CN204374042U CN201520070317.2U CN201520070317U CN204374042U CN 204374042 U CN204374042 U CN 204374042U CN 201520070317 U CN201520070317 U CN 201520070317U CN 204374042 U CN204374042 U CN 204374042U
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China
Prior art keywords
experiment bucket
constant head
permeability coefficient
water
temperature control
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Expired - Fee Related
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CN201520070317.2U
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Chinese (zh)
Inventor
高可为
陈逸昕
苏奇华
陈斯乐
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高可为
陈逸昕
苏奇华
陈斯乐
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Abstract

The utility model discloses a kind of constant head apparatus for measuring permeability coefficient, the supporting leg comprising experiment bucket and weld bottom it, platen is provided with in experiment bucket, being connected with stress loop by lifting jack of platen, stress loop is fixed on the top of reaction frame, the bottom of experiment bucket is provided with ring support, and ring support is provided with metal otter board, and the outer wall of experiment bucket is welded with water-bath temperature control layer.The utility model has the advantage of, the platen arranged in experiment bucket and lifting jack, stress loop cooperatively interact, compacting operation can be carried out to test sample, the outer wall of experiment bucket is welded with water-bath temperature control layer, make specimen temperature consistent with the temperature in actual environment, improve the accuracy of measurement data, make refuse landfill can determine the best amount of recharging accurately according to measurement data, effectively solve the problem that leachate reeirculation amount is difficult to determine, improve the degradation speed of rubbish, make percolate obtain effective process.

Description

A kind of constant head apparatus for measuring permeability coefficient
Technical field
The utility model belongs to measurement, test support equipment field, is specifically related to a kind of constant head apparatus for measuring permeability coefficient.
Background technology
Along with developing rapidly of China's economy in recent years, the output of municipal refuse increases year by year, most cities adopts the mode of landfill to process municipal refuse, the mode that the many employings of refuse landfill are recharged is to process in landfill process the poisonous and hazardous percolate produced, can garbage degradation be accelerated like this, again can effective disposal of refuse percolate.But, if the excessive rubbish body middle water level that may cause of the amount of recharging raises, cause refuse landfill unstable failure; If the amount of recharging is too small, effectively can not improve the degradation rate of refuse soil and effective process of percolate, therefore, determine the operation important in inhibiting of the best amount of recharging to refuse landfill.Determine that the important indicator of the amount of recharging is the infiltration coefficient of refuse soil, the infiltration coefficient of refuse soil by temperature, refuse soil character, recharge the factors such as liquid kind and affect, existing apparatus for measuring permeability coefficient, there is no temperature control equipment, the infiltration coefficient under different temperatures can not be tested, and there is no sample compaction apparatus, accurate compacting can not be carried out to sample according to actual conditions, measurement mechanism and actual environment can not be made to be consistent, do not reach optimum measurement environment, reduce the accuracy of measurement data.
Utility model content
The purpose of this utility model is to provide a kind of constant head apparatus for measuring permeability coefficient, temperature control equipment and sample compaction apparatus is not had to solve apparatus for measuring permeability coefficient in prior art, measurement mechanism and actual environment can not be made to keep consistent, the problem of optimum measurement environment can not be reached.
For achieving the above object, the technical solution of the utility model is: a kind of constant head apparatus for measuring permeability coefficient, the supporting leg 2 comprising experiment bucket 1 and weld bottom it, the side of experiment bucket 1 is provided with spillway hole 3, the opposite side of experiment bucket 1 is provided with at least three pressure taps 4, pressure tap 4 is fixedly connected with piezometric tube 5, the bottom of experiment bucket 1 is provided with freeing port 6, experiment bucket 1 is welded on reaction frame 7 by supporting leg 2, platen 8 is provided with in experiment bucket 1, being connected with stress loop 10 by lifting jack 9 of platen 8, stress loop 10 is fixed on the top of reaction frame 7, the bottom of experiment bucket 1 is provided with ring support 11, ring support 11 is provided with metal otter board 12, the outer wall of experiment bucket 1 is welded with water-bath temperature control layer 13, the top correspondence of water-bath temperature control layer 13 is provided with the DC water pump 15 be connected with by flexible pipe 16 into water vent port 14, temperature control heating rod 17 is provided with in water-bath temperature control layer 13.
Preferably, the inwall of experiment bucket 1 is provided with at least four pulley tracks 18, is provided with the pulley 19 suitable with pulley track 18 between metal otter board 12 and ring support 11.
Preferably, the quantity of pulley track 18 is four, and pulley track 18 is arranged by 45 degree of intervals on experiment bucket 1 inwall.
Preferably, the quantity of pressure tap 4 is six.
Preferably, the porch of spillway hole 3 and pressure tap 4 is equipped with screen pack 20.
Preferably, freeing port 6 is fixedly connected with ball valve 21, ball valve 21 is fixedly connected with drainpipe 22.
Preferably, the card of platen 8 is provided with through hole 23.
The utility model has the advantage of: the platen arranged in experiment bucket and lifting jack, stress loop cooperatively interacts, effectively can carry out compacting operation to test sample, sample environment in measurement mechanism and actual environment are consistent, improve the accuracy of measurement data, the outer wall of experiment bucket is welded with water-bath temperature control layer, can temperature effectively in simulating reality environment, the temperature of test sample is regulated, make the specimen temperature in measurement mechanism consistent with the temperature in actual environment, further increase the accuracy of measurement data, make refuse landfill can determine the best amount of recharging accurately according to measurement data, effectively solve the problem that leachate reeirculation amount is difficult to determine, improve the degradation speed of rubbish, percolate is made to obtain effective process.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is plan structure schematic diagram of the present utility model.
Reference numeral implication is as follows: experiment bucket (1), supporting leg (2), spillway hole (3), pressure tap (4), piezometric tube (5), freeing port (6), reaction frame (7), platen (8), lifting jack (9), stress loop (10), ring support (11), metal otter board (12), water-bath temperature control layer (13), enter water vent port (14), DC water pump (15), flexible pipe (16), temperature control heating rod (17), pulley track (18), pulley (19), screen pack (20), ball valve (21), drainpipe (22), through hole (23).
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of constant head apparatus for measuring permeability coefficient as depicted in figs. 1 and 2, the supporting leg 2 comprising experiment bucket 1 and weld bottom it, the side of experiment bucket 1 is provided with spillway hole 3, the opposite side of experiment bucket 1 is provided with at least three pressure taps 4, pressure tap 4 is fixedly connected with piezometric tube 5, the bottom of experiment bucket 1 is provided with freeing port 6, experiment bucket 1 is welded on reaction frame 7 by supporting leg 2, platen 8 is provided with in experiment bucket 1, being connected with stress loop 10 by lifting jack 9 of platen 8, stress loop 10 is fixed on the top of reaction frame 7, the bottom of experiment bucket 1 is provided with ring support 11, measurement mechanism can carry out accurate compacting according to actual conditions to sample, measurement mechanism and actual environment are consistent, ring support 11 is provided with metal otter board 12, the outer wall of institute's experiment bucket 1 is welded with water-bath temperature control layer 13, the top correspondence of water-bath temperature control layer 13 is provided with the DC water pump 15 be connected with by flexible pipe 16 into water vent port 14, temperature control heating rod 17 is provided with in water-bath temperature control layer 13, water-bath temperature control layer 13 expands the scope of application of measurement mechanism, the infiltration coefficient under different temperatures can be measured, make measurement mechanism can regulate the temperature of test sample according to the temperature of actual environment.
In order to improve measurement efficiency, facilitate the taking-up of test sample, the inwall of experiment bucket 1 arranges four pulley tracks 18, pulley track 18 is arranged by 45 degree of intervals on experiment bucket 1 inwall, the pulley 19 suitable with pulley track 18 is provided with between metal otter board 12 and ring support 11, when taking out test sample, the test sample of carrying on metal otter board 12 is under the mating reaction of pulley track 18 and pulley 19, upwards promote, easily test sample can be taken out experiment bucket 1, effectively raise measurement efficiency.
In order to improve the precision of measurement further, make the acquisition of measurement data more accurate, the quantity arranging pressure tap 4 is six.
In order to avoid test sample flows in spillway hole 3 and pressure tap 4, be equipped with screen pack 20 in the porch of spillway hole 3 and pressure tap 4.
In order to control the water discharge of freeing port 6, ensureing the stability measured, freeing port 6 being fixedly connected with ball valve 21, ball valve 21 being fixedly connected with drainpipe 22.
The conveniently infiltration of test liquid, the card of platen 8 is provided with through hole 23.
The course of work of the present utility model is as follows: first, refuse soil sample to be tested is deposited on metal otter board 12, lifting jack 9, stress loop 10 are fixed on platen 8 after connecting with reaction frame 7, according to measurement requirement, regulate lifting jack 9 and stress loop 10, make refuse soil sample reach the stress measured and require, keep the stress of refuse soil sample and real refuse soil to be consistent; Secondly, water being passed through water vent port 14 injects in water-bath temperature control ability 13, and filled, open temperature control heating rod 17, be adjusted to the temperature of needs by measurement requirement, open DC water pump 15, water circulation in water-bath temperature control layer 13 is heated, after waiting for a period of time, ensure that even water temperature is stablized, the temperature of the temperature of refuse soil sample and real refuse soil is consistent; Again, by in percolate injection experiments bucket 1, open ball valve 21, start timing simultaneously and collect the percolate flowed out from freeing port 6, read and record the data of each piezometric tube 5 in the corresponding time, going out refuse soil infiltration coefficient at such a temperature according to formulae discovery afterwards; Finally, close temperature control heating rod 17 and DC water pump 15, after the temperature of water-bath temperature control layer 13 is reduced to normal temperature, lifting jack 9 and stress loop 10 are unloaded, call pulley track 18 coordinates with pulley 19, refuse soil sample on metal otter board 12 is taken out, cleaning measurement mechanism, ready for measuring next time.
Above-described is only preferred embodiments of the present utility model; the technical solution of the utility model is not limited thereto; should be understood that to those skilled in the art; under technology enlightenment provided by the utility model; as the common practise of this area; other equivalent modifications and improvement can also be made, also should be considered as protection domain of the present utility model.

Claims (7)

1. a constant head apparatus for measuring permeability coefficient, the supporting leg (2) comprising experiment bucket (1) and weld bottom it, the side of described experiment bucket (1) is provided with spillway hole (3), the opposite side of described experiment bucket (1) is provided with at least three pressure taps (4), described pressure tap (4) is fixedly connected with piezometric tube (5), the bottom of described experiment bucket (1) is provided with freeing port (6), it is characterized in that: described experiment bucket (1) is welded on reaction frame (7) by supporting leg (2), platen (8) is provided with in described experiment bucket (1), being connected with stress loop (10) by lifting jack (9) of described platen (8), described stress loop (10) is fixed on the top of reaction frame (7), the bottom of described experiment bucket (1) is provided with ring support (11), described ring support (11) is provided with metal otter board (12), the outer wall of described experiment bucket (1) is welded with water-bath temperature control layer (13), the top correspondence of described water-bath temperature control layer (13) is provided with the DC water pump (15) be connected with by flexible pipe (16) into water vent port (14), temperature control heating rod (17) is provided with in described water-bath temperature control layer (13).
2. a kind of constant head apparatus for measuring permeability coefficient as claimed in claim 1, it is characterized in that: the inwall of described experiment bucket (1) is provided with at least four pulley tracks (18), between described metal otter board (12) and ring support (11), be provided with the pulley (19) suitable with pulley track (18).
3. a kind of constant head apparatus for measuring permeability coefficient as claimed in claim 2, is characterized in that: the quantity of described pulley track (18) is four, and described pulley track (18) is arranged by 45 degree of intervals on experiment bucket (1) inwall.
4. a kind of constant head apparatus for measuring permeability coefficient as claimed in claim 3, is characterized in that: the quantity of described pressure tap (4) is six.
5. a kind of constant head apparatus for measuring permeability coefficient as claimed in claim 4, is characterized in that: the porch of described spillway hole (3) and pressure tap (4) is equipped with screen pack (20).
6. a kind of constant head apparatus for measuring permeability coefficient as claimed in claim 5, is characterized in that: described freeing port (6) is fixedly connected with ball valve (21), described ball valve (21) is fixedly connected with drainpipe (22).
7. a kind of constant head apparatus for measuring permeability coefficient as claimed in claim 6, is characterized in that: the card of described platen (8) is provided with through hole (23).
CN201520070317.2U 2015-01-30 2015-01-30 A kind of constant head apparatus for measuring permeability coefficient Expired - Fee Related CN204374042U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520070317.2U CN204374042U (en) 2015-01-30 2015-01-30 A kind of constant head apparatus for measuring permeability coefficient

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Application Number Priority Date Filing Date Title
CN201520070317.2U CN204374042U (en) 2015-01-30 2015-01-30 A kind of constant head apparatus for measuring permeability coefficient

Publications (1)

Publication Number Publication Date
CN204374042U true CN204374042U (en) 2015-06-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105588796A (en) * 2015-12-17 2016-05-18 扬州大学 Device for accurately and rapidly determining permeability coefficient of soil
CN109932299A (en) * 2019-03-20 2019-06-25 山东大学 Infiltration experiment device and method under the conditions of a kind of simulated ground stress

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105588796A (en) * 2015-12-17 2016-05-18 扬州大学 Device for accurately and rapidly determining permeability coefficient of soil
CN105588796B (en) * 2015-12-17 2018-01-23 扬州大学 A kind of device of accurate quick measure soil permeability coefficient
CN109932299A (en) * 2019-03-20 2019-06-25 山东大学 Infiltration experiment device and method under the conditions of a kind of simulated ground stress
CN109932299B (en) * 2019-03-20 2020-08-25 山东大学 Penetration test device and method under simulated ground stress condition

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EXPY Termination of patent right or utility model
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Granted publication date: 20150603

Termination date: 20160130