A kind of ground vibration vibration isolating method of environmental protection
Technical field
The invention belongs to industry and track traffic vibration control technology field in vibration control technology, be specifically related to the large-scale woody plant ground vibration of a kind of deep-rootedness system of taproot vibration isolating method.
Background technology
Along with scientific and technological development, among the more and more intensive life that is stored in us of machining factory and track traffic, thing followed hazard of vibration is also more and more subject to people's attention.In service in machining and bullet train, strong ground vibration will be caused, this vibration is propagated towards periphery with the form of viscoelastic wave, healthy, live and work environmental quality, the safety of building and the normal use of precision instrument on people within the scope of factory area and Along Railway may cause serious impact, caused domestic and international many research workers' very big concern, hazard of vibration has been listed in one of the world's seven overall situation public hazards.
The Main Means that solves at present ambient vibration is both at home and abroad barrier vibration isolation.The principle of barrier vibration isolation is based upon on wave reflection, scattering and diffraction basis, its essence is that elastic wave is about multiple heteroplasmonic multiple scattering problems.Barrier is divided into two kinds of continuous barrier and discontinuous barriers.Continuous barrier is the forms such as free ditch, bentonite slurry, concrete core wall, flyash; The forms such as the porose row of noncontinuity barrier, concrete single-row stake, multiline pile.Barrier vibration isolation divides near field active vibration isolation and far field passive vibration isolation.Barrier near field active vibration isolation belongs to vibration of foundation problem on horizontal variation ground, near the position of artificial vibration source, barrier being set, reduces the outside emittance of vibration source; Barrier far field passive vibration isolation is equivalent to the Scattering of Rayleigh problem that heteroplasmon (barrier) causes, is away from artificial vibration source and the place that must reduce vibration, barrier is being set, is reducing the input of vibration.Operation principle of the present invention is similar to Vibration Isolation by Piles in Rows: be vibration wave and propagate in semi-infinite foundation, while running into Spatial Heterogeneous Environment body, vibration wave can produce reflection, refraction, diffraction, makes vibration wave energy obviously weak, thereby plays the effect of vibration isolation and damping.
Make a general survey of present various vibration isolation ways, all had very ripe development, and played good effect in vibration isolation application.But along with constantly serious and people's appealing more and more higher to green ecological environment of land pollution, instantly also there is no one not only environmental protection but also practicality Vibration Absorbing System Design reliably.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ground vibration vibration isolating method of environmental protection, replaces discontinuous barrier vibration isolation system Zhong Duopai village vibration isolation; And in vibration isolation, can also intercept to a certain extent noise of air, fresh air, greening environment, reduces air pollution.
For solving the problems of the technologies described above, the invention provides a kind of ground vibration vibration isolating method of environmental protection, described method is to realize vibration vibration isolation the large-scale woody plant of the vibrationproof district plantation deep-rootedness system of taproot.This large-scale woody system of taproot willow, comprises acrial part and underground root system.While starting to cultivate, be willow sapling, root system is less, but while cultivation, hole bottom be dug to 10 meters of left and right, and the soil digging out is processed and a backfill part.
Contents processing comprises: soil is soft, apply the inducer of fertilizer and induction root growth, then soil is backfilled to degree of depth 2m, then poplar seedlings is planted into, and deep irrigation water once irrigates, and guarantees that root system grows within a certain period of time desired depth and guarantees to survive.
The implantation methods of the large-scale woody plant of the described deep-rootedness system of taproot adopts the plantation of many row's blossom types, and described blossom type plantation adopts the mode of front and rear row interval plantation.Select suitable plantation row according to vibration isolation region and environment, so that normally survival and growth of the large-scale woody plant of the deep-rootedness system of taproot.
The large-scale woody plant of the described deep-rootedness system of taproot selects Main root depth can reach the willow of 20 meters.The otherness of Main root depth, main root shape and wave impedance and the foundation soil of large-scale system of taproot woody plant is all conducive to it for Vibration Isolation Engineering.The Main root depth of deep-rootedness system of taproot woody plant can reach 20 meters, removes nethermost soft, also can meet the requirement of 10 meters of the general required vibration isolation barrier degree of depth.
The plantation step of the large-scale woody plant of the described deep-rootedness system of taproot is:
(1) choosing tree, chooses the large-scale woody plant willow of the deep-rootedness system of taproot, and the diameter of a cross-section of a tree trunk 1.3 meters above the ground is at 28~32cm, and guarantees not affect its activity after this Plants stem implants in soil.In the time of choosing tree, by the physiological habit of the large-scale woody plant of the local deep-rootedness system of taproot is studied, select trees tree crown less, uprightly tall and straight, growing space is required to less trees; Select trees main root thick, and directly enter underground darker trees; Select trees tree stem in 30cm left and right, but tree stem is larger, transplanting survival rate is lower, therefore selects trees tree stem to be no more than 50cm as far as possible; Select trees can bury stem and transplant, bottom partial tree stem is transplanted with underground and do not affect it and survive and grow together with tree root, the present invention preferably selects willow to bury stem and transplants.
(2) play tree, more than rising and deep-cutting in tree process and to reach 3m to main root, to ensure its survival rate and vibration isolation requirement in the future.Play the tree degree of depth more than 3m, the root soil diameter that sticks together should be tree 6~10 times of stem.
(3) prune, play tree and in time willow is carried out to beta pruning afterwards, and root Tu Tuo is tied with packing material, prevent its loose sticking together.
(4) transport, in transportation, if distance is far away, ensures that every 12h sprays water once to trunk.
(5) open cave, before transport arrives, should on pre-vibration isolation band, dig hole according to Vibration Absorbing System Design, excavate hole according to the arrangement mode of blossom type in advance at vibration isolation band.While opening cave, use and stir installation and hole bottom soil is stirred on one side soft, add water with drilling pipe on one side, in water, have the micro-phosphorus, potassium, nitrogen of induction root growth etc., so that induction root system is grown downwards.The processing degree of depth will reach 10m and be advisable.Hole layout is advisable with blossom type, and because arboreal growth space requirement is larger, the row of planting is generally no less than 2 rows, and 3 rows are advisable.Trees ' root and power-equipment or orbital distance are at least not less than 8~12m, and each row's hole spacing is 6a, and row is 2a with row's spacing, and wherein the size of a requires to limit according to different vibration isolation, and under regular situation, span is generally at 0.8m-1.2m.
(6) plant trees, the willow being transported to is implanted in the cave of blossom type arrangement.By poplar seedlings plant into, and deep irrigation water once irrigates.For the vibration isolation band coming into operation immediately, stirring the degree of depth will be in about 10m, for the engineering in project period also, can be according to engineering operation time limit and progress, and the suitable cropping depth that reduces.
(7) support tree, after transplanting, in time trees are carried out to insect protected diseases prevention and antisitic defect nursing.Through growth after a while, root system of plant reaches after desired depth, reaches pre-provisioning request, and vibration isolating effect is carried out to on-the-spot test.
Technical solution of the present invention can play vibration isolation effect, and can intercept to a certain extent noise of air propagation, greening environment, and the principle that reduces air pollution institute foundation is:
1, the vibration isolation essence of discontinuous barrier system is exactly that elastic wave is about multiple heteroplasmonic multiple scattering problems.The wave impedance of the large-scale woody plant rhizome of the deep-rootedness system of taproot obviously differs from the wave impedance of foundation soil, and therefore ripple is propagated in foundation soil, and running into trees rhizome has good dispersion effect.
2, in discontinuous barrier vibration isolation, circular barrier is best to the dispersion effect of vibration wave, and trees rhizome is approximate circle cylinder, and the existence of lateral root in addition, has certain Beneficial Effect to vibration isolating effect.
3, large quantity research shows, plant can absorb to a certain extent or absorbed air in pernicious gas and harmful dust, can reach the effect purifying air.
4, the large-scale woody plant of the deep-rootedness system of taproot generally can reach 30m left and right height, and therefore many row plant vibration isolation bands are equivalent between vibration source and the external world, form a soundproof wall effectively, and the sound that vibration source is sent has certain reducing effect.
5, replacing campshed with the large-scale woody plant of the deep-rootedness system of taproot, can afforest people's living environment, is city increasing colour, improves people's life satisfaction degree.
Adopt the beneficial effect of technique scheme to be: the ground vibration vibration isolating method of the environmental protection of technical solution of the present invention, be that large-scale green deep-rootedness system of taproot woody plant large area is planted in factory area, track traffic scope along the line, replace discontinuous barrier vibration isolation system Zhong Duopai village vibration isolation; And in vibration isolation, can also intercept to a certain extent noise of air, fresh air, greening environment, reduces air pollution.
Brief description of the drawings
Fig. 1 is the large-scale woody plant cultivation of the medium-and-large-sized deep-rootedness system of taproot of the present invention process schematic diagram,
Fig. 2 is the floor plan of plant cultivation position in the present invention,
Fig. 3 is that the facade of plant cultivation in the present invention is arranged schematic diagram,
Fig. 4 is the medium-and-large-sized woody plant process of growth of the present invention schematic diagram,
Fig. 5 is the Analysis results of numerical simulation of vibration isolating effect in the present invention,
Wherein, Fig. 1 plants H for opening acupoint depth, in Fig. 2 R be planting area edge apart from vibration source distance, in Fig. 2 and Fig. 3, Q is vibration source, in Fig. 4, A1 is the tree of just having planted, A2 is the tree that grows to expection situation, and H1 is the kind roots deep of just having planted, and H2 is the degree of depth that grows to the usage tree root of expection situation, in Fig. 4, transverse axis is blind zone extended distance, the longitudinal axis is amplitude damping factor, and F1 is deep-rootedness system of taproot woody plant vibration isolating effect, the empty ditch vibration isolating effect of F2.
Embodiment
Below in conjunction with specification and Figure of description, technical scheme of the present invention and method are further described, so that those skilled in the art understand.
The invention provides a kind of ground vibration vibration isolating method of environmental protection, vibration vibration isolating method is to realize vibration vibration isolation in vibrationproof district plantation willow.As shown in figure mono-, willow comprises that acrial part and subterraneous root pastern divide.When cultivation, select willow sapling, root system is less, hole bottom is dug to 10 meters, soil is soft, apply fertilizer and the inducer of inducing root growth, then soil is backfilled to degree of depth 2m place, then poplar seedlings is planted into, and deep irrigation water once irrigates, and guarantees that root system grows within a certain period of time desired depth and guarantees to survive.
In the time that willow is planted, as shown in Figure 2, adopt the plantation of many row's blossom types, select suitable plantation row according to vibration isolation region and environment, so that normally survival and growth of the large-scale woody plant of the deep-rootedness system of taproot.
Select Main root depth can reach the willow of 20 meters, the Main root depth of deep-rootedness system of taproot woody plant can reach 20 meters, removes nethermost soft, also can meet the requirement of 10 meters of the general required vibration isolation barrier degree of depth.
The plantation step of the large-scale woody plant of the described deep-rootedness system of taproot is:
(1) choosing tree, chooses the large-scale woody plant willow of the deep-rootedness system of taproot, and the diameter of a cross-section of a tree trunk 1.3 meters above the ground is at 28~32cm, and guarantees not affect its activity after willow stem implants in soil.Select trees tree stem in 30cm left and right, but tree stem is larger, transplanting survival rate is lower, therefore selects trees tree stem to be no more than 50cm as far as possible; Select trees can bury stem and transplant, bottom partial tree stem is transplanted with underground and do not affect it and survive and grow together with tree root, the present invention preferably selects willow to bury stem and transplants.
(2) play tree, more than rising and deep-cutting in tree process and to reach 3m to main root, the root soil diameter that sticks together should be 18~30m of tree stem.
(3) prune, play tree and in time willow is carried out to beta pruning afterwards, and root Tu Tuo is tied with packing material, prevent its loose sticking together.
(4) transport, in transportation, if distance is far away, ensures that every 12h sprays water once to trunk.
(5) open cave, before transport arrives, should on pre-vibration isolation band, dig blossom type hole according to Vibration Absorbing System Design.While opening cave, use and stir installation and hole bottom soil is stirred on one side soft, add water with drilling pipe on one side, in water, have the micro-phosphorus, potassium, nitrogen of induction root growth etc., so that induction root system is grown downwards.The processing degree of depth will reach 10m and be advisable.Hole layout is advisable with blossom type, and because arboreal growth space requirement is larger, the row of planting is generally no less than 2 rows, and 3 rows are advisable.Trees ' root and power-equipment or orbital distance are at least not less than 12m, and each row's hole spacing is 6m, and row is 2m with row's spacing.
(6) plant trees, the willow being transported to is implanted in the cave of blossom type arrangement.By poplar seedlings plant into, and deep irrigation water once irrigates.For the vibration isolation band coming into operation immediately, stirring the degree of depth will be in about 10m, for the engineering in project period also, can be according to engineering operation time limit and progress, and the suitable cropping depth that reduces.
(7) support tree, after transplanting, in time trees are carried out to insect protected diseases prevention and antisitic defect nursing.Through growth after a while, root system of plant reaches after desired depth, reaches pre-provisioning request, and vibration isolating effect is carried out to on-the-spot test.
In the present invention, disclosed deep-rootedness woody plant is willow, but the present invention's proposition is a kind of technical scheme, and deep-rootedness woody plant is not only confined to select willow, and all have deep-rootedness, the good trees of growth characteristics all can replace use.
Above-mentioned combination specification and Figure of description are exemplarily described invention; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as this non-essential improvement that has adopted method design of the present invention and technical scheme to carry out; or without improving, the design of invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.