CN103444293B - The improvement method of beach saline land Regional City street tree underground - Google Patents
The improvement method of beach saline land Regional City street tree underground Download PDFInfo
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Abstract
The present invention relates to the improvement method of a kind of beach saline land Regional City street tree underground, mainly for the improvement of the street tree region underground desalting system built for many years and street tree Root growing space, comprise the steps: 1), by street tree areas outside, namely mat formation removing in the solonchak on pavement, tabia and pavement, and carry out soil moved in improve the original replacement to original solonchak; 2), dn60PVC permeability cell is laid at root system of plant integrated distribution layer, paving mode is horizontal wave, permeability cell two passes from original street tree at a certain angle, outlet exceeds greenery patches 2-3cm, and ooze pipe at original street tree pouring layer depth laying dn60PVC, oozing outside pipe uses non-woven fabrics to wrap up, and is connected with the salt discharge inspection shaft of the desalting system of underground, former street tree region.The present invention ensures street tree growth and sustainable development, gives full play to street tree ecological benefits.
Description
Technical field
The present invention relates to a kind of improvement method of alkaline land soil, improving one's methods of a kind of urban path tree soil of greenbelt improved system proposed mainly for coastal sludge matter varieties in saline-alkali areas soil alkaline, the limiting factor such as subterranean water level is high, soil property clings and conventional method are not enough.
Background technology
Street tree refers to be planted in road both sides, form streetscape to vehicle and pedestrian's sunshade, there are the trees of certain intervals, it has view, purify air, increase give shade, climate comfort, raising traffic safety, fire prevention, the function such as reduction noise, therefore street tree occupies critical role in urban green space system, the quality of a urban path tree directly affects ecological functions and the overall image in city, also concerns the quality of life of the people.Coastal sludge matter varieties in saline-alkali areas urban path tree greening except have the soil compaction of general urban green space, human activity, without except the common features such as level, biologically active reduction, also be subject to soil alkaline, structure is poor, high salinity underground water, osmotic coefficient are low, soil depletion, liquid manure gas heat is inharmonious, usually cause that street tree survival rate is low, storage rate is not high or plant undergrowth and do not reach due afforestation effect and landscape function, cannot the demand of adapt to economic development development and human living.Therefore carry out system improvement to Regional City, shale saline land, strand street tree soil of greenbelt, the root growth for street tree is created good soil environment and is had important practical significance and more practical value.
At present, coastal saline-alkali area urban afforestation common method mainly contains Sand-gravel-cushion Technioue, blind pipe method, drench layer and add the forms such as blind pipe, Sand-gravel-cushion Technioue in the early stage effect is comparatively remarkable, but do not remove street tree soil by influence on groundwater, the problem of outlet of soil salt is not solved yet, blind pipe or blind pipe+pouring layer solve underground water and soil salt problem well, but street tree root system of plant Vegetation space problem is not solved very well, namely trade tree plant is usually raw wide 1 meter, in the planting groove of dark about 1 meter, both sides or salt content is high, the primary saline soil that soil density is high, or side is the roadbed treatment of road construction and concrete or bituminous paving, opposite side is solonchak and certain level tabia, floor tile is laid on top layer, the limitation of these ways mainly contains: 1. soil density is high, cause desalination difficulty, for plant root growth brings salinity to endanger, 2. soil density height hinders the interspersed growth of root system of plant, 3. concrete, pitch or floor tile ooze ability under reducing the ventilation of soil and moisture, 4. the use of tabia easily causes alkalization of soils etc. in planting groove, and these influence factors make street tree often occur rotten, salt damage or undergrowth, even occur the phenomenons such as dead.
Summary of the invention
The technical problem to be solved in the present invention is: for the deficiencies in the prior art, provides improving one's methods of a kind of beach saline land area street tree soil of greenbelt improved system, ensures street tree growth and sustainable development, gives full play to street tree ecological benefits.
The technical solution used in the present invention is:
Improving one's methods of a kind of beach saline land area street tree soil of greenbelt improved system, mainly for the improvement of the street tree region underground desalting system built for many years and street tree Root growing space, comprises the steps:
1), by street tree areas outside, namely mat formation removing in the solonchak on pavement, tabia and pavement, and removing width is 60-100cm, the degree of depth is 90-120cm, and carries out soil moved in improve the original replacement to original solonchak, replaces with planting soil;
2), dn60PVC permeability cell is laid at root system of plant integrated distribution layer (i.e. 60-70cm place, street tree areas outside underground), paving mode is horizontal wave, permeability cell two passes from original street tree at a certain angle, outlet exceeds greenery patches 2-3cm, and drench layer depth (i.e. 90-120cm) original street tree and lay dn60PVC and ooze pipe, oozing outside pipe uses non-woven fabrics to wrap up, and is connected with the salt discharge inspection shaft of the desalting system of underground, former street tree region.
Preferably, above-mentioned improving one's methods also comprises step 3), first spread 30 thick medium sands on the top layer of street tree areas outside, and then lay water-permeable brick, and fine sand sweeps seam.
Preferably, described step 1) in planting soil be the planting soil of salt content less than 0.4%.
Preferably, described step 2) in permeability cell two pass from original street tree with the angle of 30-60 degree.
Preferably, described water-permeable brick is of a size of 200 × 100 × 60 (mm).
The present invention is above-mentioned, and the underground of improving one's methods for street tree construction area has built the region of complete desalting system, the construction of desalting system is the conventional known technology of this area, as: " the shallow diving beach salty soil area hidden pipe salt discharge technology " patent No.: ZL99123842.7.
Present invention also offers the improvement method of a kind of beach saline land area street tree soil of greenbelt, the method is that the space of newly planting street tree underground builds, and comprises the steps:
1), hidden pipe desalting system is built in underground, street tree region;
2), when street tree planting, will plan that street tree construction area and outside (i.e. pavement) solonchak are removed, and carry out soil moved in improve the original replacement, and replace with planting soil, pavement removes that width is 60-100cm, the degree of depth is 90-120cm;
3), dn60PVC permeability cell is laid at 60-70cm place, street tree areas outside underground, paving mode is horizontal wave, permeability cell two angle at a certain angle passes from street tree region, outlet exceeds greenery patches 2-3cm, the center laying dn60PVC removing solonchak overall width underground 90-120cm degree of depth street tree and pavement oozes pipe, and is connected with the salt discharge inspection shaft of desalting system; Then backfill 10-20cm and drench layer material;
Preferably, above-mentioned improving one's methods also comprises step 4), first spread 30 thick medium sands on the top layer of street tree areas outside, and then lay water-permeable brick, and fine sand sweeps seam.
Preferably, described step 2) in planting soil be the planting soil of salt content less than 0.4%.
Preferably, described step 3) in permeability cell two pass from street tree region with the angle of 30-60 degree.
Preferably, described pouring layer material is liquid slag or stone nitre.
Preferably, described water-permeable brick is of a size of 200 × 100 × 60 (mm).
Step 1) in the construction of desalting system mentioned be the conventional known technology of this area, as " the shallow diving beach salty soil area hidden pipe salt discharge technology " patent No.: ZL99123842.7.
The beneficial effect that the present invention has:
The present invention is directed in the urban path tree greening of coastal saline-alkali area and have problems and the expansion of proposition new plantation street tree underground space structure or built street tree Root growing space and soil improvement method.
The present invention is directed to that the plant growth insufficient space, the soil density that exist in the design of original street tree are high, ooze difficulty, outside and the harm of exterior bottom solonchak under moisture and the one that proposes is improved one's methods.Bottom street tree areas outside, lay the salt discharge that is connected with original desalting system ooze and manage, ooze pipe outer wrapping non-woven fabrics, solve soil salt and underground water queueing problem, use non-woven wraps and economize de-stone nitre layer, avoid oozing pipe plug solarization, minimizing input; The middle permeability cell laid is conducive to the ventilatory problem of root system of plant distribution layer, solves the rotten problem of original plant, is also conducive to rainwater in irrigation or greenery patches and arrives root system of plant layer fast, be also conducive to lower soil salinity simultaneously and control; Top layer is laid the seepage that fine sand and water-permeable brick be conducive to rainwater and is utilized, and eliminates the consolidation of original tabia and infiltration and ventilatory problem.
Accompanying drawing explanation
Fig. 1 looks generalized section to the master that the street tree underground space of underground, the street tree region desalting system built for many years constructs;
Fig. 2 oozes pipe sectional schematic diagram to the street tree areas outside underground dn60PVC of underground, the street tree region desalting system built for many years.
Fig. 3 is the vertical view constructed the street tree underground space of underground, the street tree region desalting system built for many years.
Fig. 4 is that the space structure master newly planting street tree underground looks generalized section.
In Fig. 1,2,3, A is street tree region, and B is planting soil; C mats formation for closing on; D is for drenching layer; E is 200 × 100 × 60 water-permeable bricks; F is 30 thick medium sands (river sand); G is liquid slag; H is that street tree region underground dn60PVC oozes pipe, and I is that the dn60PVC of street tree areas outside underground oozes pipe; J is dn60PVC permeability cell; M is non-woven fabrics; K is salt discharge inspection shaft; L is that the two screw thread of dn110 oozes pipe (entering municipal catch-basin).
In Fig. 4, A is earth's surface, greenery patches, and B is planting soil; C mats formation for closing on; D is for drenching layer; E is 200 × 100 × 60 water-permeable bricks; ; F is 30 thick medium sands (river sand); G is liquid slag; H is that the dn60PVC that the center of street tree and pavement removing solonchak overall width is laid oozes pipe; J is dn60PVC permeability cell.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but do not limit protection scope of the present invention.
Embodiment 1
Improving one's methods of a kind of beach saline land area street tree soil of greenbelt improved system, the method has built the improvement of complete hidden pipe desalting system for the underground of street tree construction area, comprises the steps:
1. to be mated formation in (i.e. pavement) solonchak, tabia and pavement outside the A of street tree region removing, removing width is 80cm, the degree of depth and original street tree are drenched bottom layer D and maintain an equal level, i.e. 120cm, and soil moved in improve the original replacement is carried out to original solonchak, replace with the planting soil B (Fig. 1) of salt content less than 0.4%;
2. dn60PVC permeability cell J is laid at root system of plant integrated distribution layer (i.e. 60-70cm place, street tree areas outside underground), paving mode is horizontal wave, permeability cell two passes from original street tree with the angle of 45 degree, outlet exceeds greenery patches 2-3cm, and drench original street tree the dn60PVC that layer depth lays street tree areas outside underground and ooze pipe I, ooze and use non-woven fabrics M to carry out wrapping up (Fig. 2) outside pipe and be connected (Fig. 3) with salt discharge inspection shaft K.
3. first spread 30 thick medium sand F in street tree region A outer skin, and then lay 200 × 100 × 60 water-permeable brick E, and fine sand sweeps seam.
The Chinese scholar tree street tree renovation and utilization on paulownia on Mu Ning road, development zone, Tianjin of the scheme of embodiment 1 and Huanghai Sea road achieves positive effect.
Embodiment 2
As shown in Figure 4, the improvement method of a kind of beach saline land area street tree soil of greenbelt, the method is that the space of newly planting street tree underground builds, and comprises the steps:
1), hidden pipe desalting system is built in A underground, street tree region;
2), when street tree planting, will plan that street tree construction area and outside (i.e. pavement) solonchak are removed, and carry out soil moved in improve the original replacement, and replace with the planting soil B of salt content less than 0.4%, pavement removes that width is 80cm, the degree of depth is 120cm;
3), outside the A of street tree region, dn60PVC permeability cell J is laid at 60-70cm place, underground, paving mode is horizontal wave, permeability cell two passes from street tree region with 45 degree, outlet exceeds greenery patches 2-3cm, the dn60PVC that the center of laying street tree and pavement removing solonchak overall width in the center that underground 120cm degree of depth street tree and pavement remove solonchak overall width is laid oozes pipe H, and is connected with the salt discharge inspection shaft of desalting system; Then backfill 20cm and drench layer material, described pouring layer material is liquid slag G;
4) top layer and outside the A of street tree region first spreads 30 thick medium sand F, and then lays 200 × 100 × 60 (mm) water-permeable brick E, and fine sand sweeps seam.
Claims (2)
1. the improving one's methods of beach saline land area street tree soil of greenbelt improved system, mainly for the improvement of the street tree Root growing space of underground, the street tree region desalting system built for many years, is characterized in that: comprise the steps:
1), by street tree areas outside, namely mat formation removing in the solonchak on pavement, tabia and pavement, and removing width is 60-100cm, the degree of depth is 90-120cm, and carries out soil moved in improve the original replacement to original solonchak, replaces with planting soil; Described planting soil is the planting soil of salt content less than 0.4%;
2), at root system of plant integrated distribution layer, namely dn60PVC permeability cell is laid at 60-70cm place, street tree areas outside underground, paving mode is horizontal wave, permeability cell two passes from original street tree with the angle of 30-60 degree, outlet exceeds greenery patches 2-3cm, and ooze pipe at street tree areas outside underground 90-120cm laying dn60PVC, ooze outside pipe and use non-woven fabrics to wrap up, and be connected with the salt discharge inspection shaft of the desalting system of underground, former street tree region;
3), on the top layer of street tree areas outside first spread 30 thick medium sands, and then lay water-permeable brick, and fine sand sweeps seam.
2. an improvement method for beach saline land area street tree soil of greenbelt, the method is that the space of newly planting street tree underground builds, and it is characterized in that: comprise the steps:
1), hidden pipe desalting system is built in underground, street tree region;
2), when street tree planting, will plan that street tree construction area and outside solonchak are removed, and carry out soil moved in improve the original replacement, and replace with planting soil, pavement removes that width is 60-100cm, the degree of depth is 90-120cm; Described planting soil is the planting soil of salt content less than 0.4%;
3), dn60PVC permeability cell is laid at 60-70cm place, street tree areas outside underground, paving mode is horizontal wave, permeability cell two passes from street tree region with the angle of 30-60 degree, outlet exceeds greenery patches 2-3cm, the center laying dn60PVC removing solonchak overall width underground 90-120cm degree of depth street tree and pavement oozes pipe, and is connected with the salt discharge inspection shaft of desalting system; Then backfill 10-20cm and drench layer material;
4), on the top layer of street tree areas outside first spread 30 thick medium sands, and then lay water-permeable brick, and fine sand sweeps seam.
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| CN104494127B (en) * | 2014-12-16 | 2017-03-29 | 康莱德国际环保植被（北京）有限公司 | Salt-soda soil leaky pipe manufacturing equipment |
| CN105210799A (en) * | 2015-09-28 | 2016-01-06 | 王光林 | The implantation methods of street tree |
| CN105917787B (en) * | 2016-06-12 | 2018-09-11 | 天津泰达绿化集团有限公司 | A kind of beach saline land rapidly and efficiently improves greening method |
| CN106718596B (en) * | 2016-12-28 | 2023-04-18 | 北京市园林绿化科学研究院 | Deep water replenishing and rejuvenating device for street trees and construction method and application |
| CN107950106A (en) * | 2017-11-28 | 2018-04-24 | 西安理工大学 | A kind of closed drainage in salt-soda soil-oxygen renewal double effect system |
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Address after: No. 26 Muning Road, Economic and Technological Development Zone, Binhai New Area, Tianjin, 300457 Patentee after: Tianjin TEDA Green Technology Group Co.,Ltd. Address before: No. 26 Muning Road, Economic and Technological Development Zone, Binhai New Area, Tianjin, 300457 Patentee before: Tianjin TEDA Green Technology Group Co.,Ltd. |