CN102175212B - Device and method for detecting hydraulic head of landfill site percolate guide discharging layer - Google Patents
Device and method for detecting hydraulic head of landfill site percolate guide discharging layer Download PDFInfo
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- CN102175212B CN102175212B CN2011100315652A CN201110031565A CN102175212B CN 102175212 B CN102175212 B CN 102175212B CN 2011100315652 A CN2011100315652 A CN 2011100315652A CN 201110031565 A CN201110031565 A CN 201110031565A CN 102175212 B CN102175212 B CN 102175212B
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Abstract
The invention discloses a device and method for detecting a hydraulic head of a landfill site percolate guide discharging layer. A pulley gear, a return pipe and a guide pipe with an opening at the front end are placed on a seepage-proofing gasket layer required for monitoring a percolate hydraulic head, a soil engineering composite drainage network is wrapped on the opening at the front end of the guide pipe, the pulley gear is respectively connected with the front end of the guide pipe and one end of the return pipe, the guide pipe and the return pipe are laid on an elevation reference point along the bottom of the percolate guide discharging layer, a steel wire rope sequentially penetrates through the return pipe, a pulley in the pulley gear and the guide pipe, one end of the steel wire rope can be connected with a section settlement meter probe or an underground water level meter probe and then connected with a pulley on a base of the elevation reference point, and the other end of the steel wire rope is exposed out of the return pipe and is then in a free state. The section settlement meter probe is pulled into the guide pipe so as to measure the elevation of each point through the steel wire rope, and the underground water level meter probe is pulled into the guide pipe so as to measure the position of ground water, and the percolate hydraulic head of the monitoring point is accurately measured in a process of settling a seepage-proofing layer through combined measurement of the section settlement meter probe and the underground water level meter probe.
Description
Technical field
The present invention relates to percolate head proving installation and method of testing, especially relate to a kind of landfill percolate lead layer head proving installation and method of testing.
Background technology
The first generation refuse landfill that China builds up the 80s and 90s in last century; Especially be positioned at the landfill yard of southern moistening area of heavy rainfull; Owing to lack the dirty shunting measure of effective rain in the landfill operation district, an interior percolate guide system is prone to take place to become silted up stifled and China's house refuse initial water content is crossed high reason, causes the interior percolate water level of landfill body too high; How in below the landfill face 5 meters; So that the percolate head on the impervious lining layer not only threatens junk-heap body stable much larger than " household refuse landfill sites pollution control criterion " (GB 16889-2008) desired 30cm, also increases percolate leakage pollution risk.
In order to assess the steady state (SS) of refuse landfill, be necessary very much junk-heap body is carried out the percolate water level monitoring.The percolate water level monitoring comprises the percolate head on junk-heap body master water level, backwater position and the impervious lining layer.Junk-heap body master water level, backwater position mainly are to realize through on junk-heap body, setting vertical water level pipe, and the monitoring of percolate head is a technical barrier in landfill yard engineering field always on the impervious lining layer.The monitoring of percolate head is general on the existing impervious lining layer adopts following two kinds of methods: (1) vertical water level pipe and level communicating pipe the simultaneous determination method; The maximum shortcoming of this method can't be tested the sedimentation of impervious lining layer in the garbage loading embeading process; Cause its test result less than normal, can't reflect actual conditions, the impervious lining layer at the bottom of need directly passing level communicating pipe on the other hand; Be prone to cause the destruction of impervious lining layer, cause environmental pollution; (2) pore pressure gauge test, this method are difficult to ensure the long durability of pore pressure gauge in percolate soaks, and also are difficult to select suitable range to be tested.
Summary of the invention
The object of the invention is to provide a kind of landfill percolate lead layer head proving installation and method of testing; Adopt the method for section sedimentometer and underground water table meter simultaneous determination percolate lead layer head, can accurately confirm the percolate head on the refuse landfill impervious lining layer.
The technical scheme that the present invention adopted is:
One, a kind of landfill percolate lead layer head proving installation:
Invention comprises conduit, return pipe, pulley gear, section sedimentometer, underground water table meter, wire rope, soil engineering composite drainage network and pedestal.The conduit of pulley gear, return pipe and front end perforate all is placed on the impervious lining layer that need carry out the monitoring of percolate head; The front end tapping of conduit is coated with soil engineering composite drainage network; Pulley gear is connected with the front end of conduit and an end of return pipe respectively; Conduit and return pipe are routed to the height datum point on the face of land along percolate lead layer bottom, after wire rope passed the pulley and conduit in return pipe, the pulley gear successively, an end of wire rope can be with after section sedimentometer probe or underground water table meter probe be connected; Again with the pedestal of height datum point on pulley be connected, the other end of wire rope is in free state after exposing return pipe.
Two, a kind of landfill percolate lead layer head method of testing:
All be connected an end of conduit and return pipe on the pulley gear; Be embedded in percolate head monitoring place of percolate lead layer bottom with pulley gear; The other end of conduit and return pipe is laid to pedestal; And in conduit and return pipe, wire rope is installed, be coated with soil engineering composite drainage network at the partially perforation of conduit; Wherein:
1) during the initial measurement of higher degree of conduit: the elevation that adopts gps system test height datum point; Section sedimentometer reel fixed placement is on pedestal; Test section sedimentometer probe is fixed in section sedimentometer probe on the conduit wire rope at the reading of height datum point then, and the wire rope in the pulling return pipe is sent section sedimentometer probe into conduit; The reading of the 0.5 meter test conduit each point in interval; Until the conduit tapping is percolate head monitoring point, and the length of record from the conduit mouth of pipe to this point is percolate head monitoring point length, after the completion section sedimentometer probe is pulled out conduit;
The conduit measurement of higher degree when 2) monitoring: the elevation that adopts gps system test height datum point; Section sedimentometer reel fixed placement is on pedestal; Test section sedimentometer probe is fixed in section sedimentometer probe on the conduit wire rope at the reading of height datum point then, and the wire rope in the pulling return pipe is sent section sedimentometer probe into conduit; The reading of the 0.5 meter test conduit each point in interval; When the length of lead entering conduit reached percolate head monitoring point length, record reading this moment was pulled out conduit with section sedimentometer probe after the completion.
The percolate head is measured when 3) monitoring: underground water table meter probe is fixed on the conduit wire rope; Wire rope in the pulling return pipe is sent into the underground water table meter in the conduit; Warning device sounds when underground water table meter probe touches the water level face, the scale on the record underground water table meter this moment lead, the i.e. length of underground water table meter lead from mouth of pipe entering conduit; Be called water level gauge length, after the completion underground water table meter pulled out conduit.
4) percolate lead layer head calculates: according to the elevation of the test result calculations percolate head monitoring point of section sedimentometer; In conjunction with the elevation of underground water table length according to the test result calculations subsurface infiltration liquid water level face of section sedimentometer, the difference of both elevations is percolate head monitoring point percolate lead layer head this moment.
The beneficial effect that the present invention has is:
1) this device is buried underground conveniently, has excellent corrosion resisting performance, and operation is very easy;
2) through the simultaneous determination of section sedimentometer and underground water table meter, realize the accurate measurement of lead layer percolate head monitoring point percolate head in the lead layer settling process;
3) in test process, avoided the composite pad system is caused breakage, prevent the percolate leakage pollution environment;
4) can also obtain the sedimentation of percolate lead layer in the garbage loading embeading process.
Description of drawings
Fig. 1 is structure and the test synoptic diagram that the present invention installs the section sedimentometer.
Fig. 2 is structure and the test synoptic diagram that the present invention installs the underground water table meter.
Fig. 3 is the detail structure chart of pulley gear.
Fig. 4 is the schematic diagram of section sedimentometer and underground water table meter simultaneous determination percolate height.
Among the figure: 1, conduit, 2, return pipe, 3, pulley gear, 4, the section sedimentometer; 5, underground water table meter, 6, percolate head monitoring point, 7, wire rope, 8, soil engineering composite drainage network; 9, pedestal, 10, the percolate lead layer, 11, the impervious lining layer; 12, height datum point, 13, perforate, 14, percolate water level face.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Like Fig. 1, Fig. 2, shown in Figure 3, the present invention includes conduit 1, return pipe 2, pulley gear 3, section sedimentometer 4, underground water table meter 5, wire rope 7, soil engineering composite drainage network 8 and pedestal 9; The conduit 1 of pulley gear 3, return pipe 2 and front end perforate all is placed on the impervious lining layer 11 that need carry out the monitoring of percolate head; Front end perforate 13 places of conduit 1 are coated with soil engineering composite drainage network 8; Pulley gear 3 is connected with the front end of conduit 1 and an end of return pipe 2 respectively; Conduit 1 and return pipe 2 are routed to the height datum point 12 on the face of land along percolate lead layer 10 bottoms, after wire rope 7 passes the pulley and conduit 1 in return pipe 2, the pulley gear 3 successively, an end of wire rope 7 can with section sedimentometer 4 probes or underground water table meter 5 pop one's head in be connected after; Again with the pedestal 9 of height datum point on pulley be connected, the other end of wire rope 7 is in free state after exposing return pipe 2.
Implementation process of the present invention is following:
The present invention includes pulley gear, conduit, wire rope, return pipe, soil engineering composite drainage network, section sedimentometer, underground water table meter, height datum point.A conduit is through partially perforation; Its tapping is placed on the impervious lining layer that need carry out the monitoring of percolate head; Tapping is coated with soil engineering composite drainage network; The partially perforation conduit leans on inboard end of landfill yard and the bigger connecting pipe welding of pulley gear diameter, the other end and conduit welding, the connecting pipe welding that return pipe and pulley gear diameter are less; Conduit and return pipe are routed to the height datum point on the face of land along percolate lead layer bottom, wire rope passes return pipe, pulley gear, partially perforation conduit and conduit successively.
Conduit adopts the identical HPDE pipe of diameter; General length of HDPE pipe is 6 meters; Should be according to the distance calculation HDPE pipe Len req of percolate head monitoring point 6 with pedestal 9; Wherein a conduit adopts the mode of artificial perforate on the HPDE pipe, to enclose perforate around one, and return pipe can adopt the HDPE pipe of diameter 33mm, welds together between the conduit of partially perforation and pulley gear and return pipe and the pulley gear; Must weld and guarantee water-tight between conduit and the conduit, wire rope adopts the stainless steel wire rope of diameter 3mm.
After impervious lining layer and percolate lead layer construction completion,, on the percolate lead layer, be excavated to pedestal from percolate head monitoring point building pedestal and height datum point from the nearest face of land, percolate head monitoring point; Depth impervious barrier surface is placed on return pipe, pulley gear, partially perforation conduit and other conduits on the impervious barrier successively, and wherein the tapping of partially perforation conduit is placed on percolate head monitoring point; Tapping is coated with soil engineering composite drainage network, and wire rope is passed return pipe, pulley gear, conduit successively, and the conduit of partially perforation leans on inboard end of landfill yard and the bigger connecting pipe welding of pulley gear diameter; The other end and a conduit welding; Weld between conduit and the conduit and lay, the connecting pipe welding that return pipe and pulley gear diameter are less, length along the test of conduit route from the conduit mouth of pipe to percolate head monitoring point to pedestal; Be called percolate head monitoring point length; Adopt gravel backfill return pipe, pulley gear and all conduits, adopt the elevation of gps system test height datum point, section sedimentometer reel fixed placement is on pedestal; Test section sedimentometer probe is at the reading of height datum point; Then section sedimentometer probe is fixed on the conduit wire rope, the wire rope in the pulling return pipe is sent section sedimentometer probe into conduit, at interval the reading of 0.5 meter test conduit each point; Reach percolate head monitoring point length until getting into conductor length, after the completion section sedimentometer probe is pulled out conduit.
In the time need carrying out the monitoring of percolate head behind the garbage loading embeading; Adopt the elevation of gps system test height datum point; Section sedimentometer reel fixed placement is on pedestal, and test section sedimentometer probe is fixed in section sedimentometer probe on the conduit wire rope at the reading of height datum point then; Wire rope is sent section sedimentometer probe into conduit in the pulling return pipe; The reading of 0.5 meter test conduit each point reaches percolate head monitoring point length until getting into conductor length at interval, after the completion section sedimentometer probe is pulled out conduit.
Underground water table meter probe is fixed on the conduit wire rope; Wire rope is sent underground water table meter probe into conduit in the pulling return pipe; Sound the scale on the record underground water table meter this moment lead, the i.e. length of underground water table meter probe lead from mouth of pipe entering conduit until underground water table meter warning device; Be called underground water table meter length, after the completion underground water table meter probe pulled out conduit.
Elevation according to the test result calculations percolate head monitoring point of section sedimentometer; In conjunction with underground water table meter length and according to the elevation of the test result calculations subsurface infiltration liquid water level face 14 of section sedimentometer, the difference of both elevations is percolate head monitoring point percolate lead layer head (as shown in Figure 4) this moment.Increase with the garbage loading embeading height, can require this percolate head monitoring point percolate head to be continued to monitor according to monitoring according to this method.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (2)
1. a landfill percolate lead layer head proving installation is characterized in that: comprise conduit (1), return pipe (2), pulley gear (3), section sedimentometer (4), underground water table meter (5), wire rope (7), soil engineering composite drainage network (8) and pedestal (9); The conduit (1) of pulley gear (3), return pipe (2) and front end perforate all is placed on the impervious lining layer (11) that need carry out the monitoring of percolate head; The front end tapping of conduit (1) is coated with soil engineering composite drainage network (8); Pulley gear (3) is connected with the front end of conduit (1) and an end of return pipe (2) respectively; Conduit (1) and return pipe (2) are routed to the height datum point on the face of land along percolate lead layer bottom; After wire rope (7) passes the pulley and conduit (1) in return pipe (2), the pulley gear (3) successively; One end of wire rope (7) can be with after section sedimentometer (4) probe or underground water table meter (5) probe be connected, again with the pedestal (9) of height datum point on pulley be connected, the other end of wire rope (7) is in free state after exposing return pipe (2).
2. according to a kind of landfill percolate lead layer head method of testing of the said device of claim 1; It is characterized in that: all be connected an end of conduit and return pipe on the pulley gear; Be embedded in percolate head monitoring place of percolate lead layer bottom with pulley gear; The other end of conduit and return pipe is laid to pedestal, and in conduit and return pipe, wire rope is installed, and is coated with soil engineering composite drainage network in the front end perforate of conduit; Wherein:
1) during the initial measurement of higher degree of conduit: the elevation that adopts gps system test height datum point; Section sedimentometer reel fixed placement is on pedestal; Test section sedimentometer probe is fixed in section sedimentometer probe on the conduit wire rope at the reading of height datum point then, and the wire rope in the pulling return pipe is sent section sedimentometer probe into conduit; The reading of the 0.5 meter test conduit each point in interval; Until the conduit tapping is percolate head monitoring point, and the length of record from the conduit mouth of pipe to this point is percolate head monitoring point length, after the completion section sedimentometer probe is pulled out conduit;
The conduit measurement of higher degree when 2) monitoring: the elevation that adopts gps system test height datum point; Section sedimentometer reel fixed placement is on pedestal; Test section sedimentometer probe is fixed in section sedimentometer probe on the conduit wire rope at the reading of height datum point then, and the wire rope in the pulling return pipe is sent section sedimentometer probe into conduit; The reading of the 0.5 meter test conduit each point in interval; When the length of lead entering conduit reached percolate head monitoring point length, record reading this moment was pulled out conduit with section sedimentometer probe after the completion;
The percolate head is measured when 3) monitoring: underground water table meter probe is fixed on the conduit wire rope; Wire rope in the pulling return pipe is sent into the underground water table meter in the conduit; Warning device sounds when underground water table meter probe touches percolate water level face, the scale on the record underground water table meter this moment lead, the i.e. length of underground water table meter lead from mouth of pipe entering conduit; Be called water level gauge length, after the completion underground water table meter pulled out conduit;
4) percolate lead layer head calculates: according to the elevation of the test result calculations percolate head monitoring point of section sedimentometer; In conjunction with the elevation of underground water table length according to the test result calculations subsurface infiltration liquid water level face of section sedimentometer, the difference of both elevations is percolate head monitoring point percolate lead layer head this moment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100315652A CN102175212B (en) | 2011-01-29 | 2011-01-29 | Device and method for detecting hydraulic head of landfill site percolate guide discharging layer |
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| CN2011100315652A CN102175212B (en) | 2011-01-29 | 2011-01-29 | Device and method for detecting hydraulic head of landfill site percolate guide discharging layer |
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| CN102175212A CN102175212A (en) | 2011-09-07 |
| CN102175212B true CN102175212B (en) | 2012-06-27 |
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| CN104316026B (en) * | 2014-10-27 | 2017-02-15 | 长沙理工大学 | Cross-cutting instrument sensor traction method in road broadening subgrade |
| CN106840304A (en) * | 2017-02-20 | 2017-06-13 | 中国电建集团华东勘测设计研究院有限公司 | A kind of permanent monitoring holes of underground water and preparation method thereof |
| CN111336988B (en) * | 2020-04-02 | 2022-08-02 | 南京南瑞水利水电科技有限公司 | Double-drainage loop water pipe type settlement meter |
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| DE2610654A1 (en) * | 1976-03-13 | 1977-09-15 | Jaeger Bernhard Dipl Ing | Rubbish tip internal settlement measurement - uses hose embedded in tip allowing position measurement by water pressure test |
| CN101846613B (en) * | 2010-05-25 | 2011-08-24 | 浙江大学 | Clogging simulation test device for drainage layer of refuse landfill under different-temperature conditions |
| CN202083385U (en) * | 2011-01-29 | 2011-12-21 | 浙江大学 | Hydraulic head testing device for leachate discharge guiding layer in landfill site |
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