Patent Application
20100143039
This application claims priority to Chinese Patent Application No. 200810239060.3, filed on Dec. 5, 2008, entitled “Sand Disturbance System and Method Thereof”, the content of which is incorporated herein by reference in its entirety.
The present invention relates to Water and Sediment Regulation technology, particularly to a sand disturbance system and a sand disturbance method executed by the system.
From time immemorial, water lack and sand excessiveness and the imbalance between water and sand are the roots of the Yellow River inundation. The Yellow River carries 16 hundred millions tons of sand into downstream, and 4 hundred millions tons of sand deposits on the downstream riverbed such that the downstream riverbed uplifts in an average rate of 10 cm/year. At present, the downstream riverbed is average 4 to 6 meters higher than river adjacent land, which forms the world famous “aboveground river”.
In recent years, our country put forward control measures for “Water and Sediment Regulation” aiming at the fact of the Yellow River, that is, the riverbed undercutting is realized by virtue of the kinetic energy of water and with assistance of artificial disturbance of riverbed sediment, such that the maximum sand is transferred to the sea. Where artificial disturbance of riverbed sediment mainly adopts sand disturbance boat with air compressor and high pressure muzzle, exerts a high pressure impact about 0.5 meters above the sediment deposition surface to disturb the deposited sediment of the area sufficiently. The high pressure muzzle of this kind of sand disturbance boat has a small impact area when exerts high pressure impact on sediment deposition surface, for large-area sediment deposition reach of the Yellow River, the effect of sand disturbance is not obvious. However, in the prior art, the control usually is performed only in seriously sediment deposited areas, and the disturbed sand will deposit next reach. Therefore, it is not possible to achieve the purpose of complete control of sediment, and it has a very high cost for the sand control of the whole river so that it is difficult to achieve the complete control.
The object of the present invention is to provide a sand disturbance system and method thereof to increase the effect of sand disturbance and completely control inundation.
In order to achieve above object, the present invention provides a sand disturbing system which includes a sand disturbance boat, wherein the sand disturbance boat includes:
at least one floating body floating on water current; and
at least one baffle disposed on the floating body, and inserted into the water current when disturbing sand, wherein a spacing is present between an edge of the baffle and a riverbed, and the baffle is adapted to disturbing sediment on the riverbed when the water current flows through the spacing.
In order to achieve above object, the present invention also provides a sand disturbing method, including:
inserting a baffle disposed on a floating body of a sand disturbance boat into water current, wherein a spacing is present between an edge of the baffle and a riverbed; and
the baffle driving the floating body to run downstream with a push of the water current, wherein sediment is disturbed and flowed away when the water current flows through the spacing.
It can be seen from the above technical solution that the present invention adopts baffle obstruct water current, makes the water current rapidly through a spacing between baffle edge and a riverbed to disturb and flows away sediment. This technical means overcomes the technical problem in prior art that when the high pressure muzzle of sand disturbance boat exerts a high pressure impact on sediment deposition surface, the impacted area is smaller with respect to the Yellow River vast sediment deposition reach, and sand disturbance effect is not obvious. Moreover, with the running of floating body, the sand regulation can be performed in areas of Long River, which completely control the sediment deposition problem. The present invention can enhance disturb sand effect and completely control inundation, and the implementing method is simple and easy to be promoted in the Yellow River and a variety of river water areas.
In figures:
As shown in
Embodiment 1 of the Sand Disturbance System
As shown in
In the embodiment, the floating body 1 is connected to the wheel disc 3 by using the flexible chain 4, one end of the flexible chain 4 is fixedly connected to the floating body 1 and the other end of the flexible chain 4 winds around the wheel disc 3. When the floating body 1 runs downstream with the push of the water current, the flexible chain 4 is dragged to drive the wheel disc 3 to rotate together. In the application, the advantage of using the flexible chain 4 and the wheel disc 3 is that the floating body 1 can be controlled and drawn back to the start position by winding the flexible chain 4 after the floating body 1 runs a distance.
The sand disturbing process of sand disturbance system in the embodiment is as follows:
Firstly, a baffle is inserted into the water current and the baffle drives a floating body to run together downstream with the push of the water current; the baffle obstructs the water current, such that the water current flows through a spacing between a baffle edge and a riverbed, disturbs and flows away sediment of riverbed; and the sediment of riverbed passed by the floating body is disturbed and flowed away. In the process, the floating body drags the flexible chain to be loosened from the wheel disc, then the wheel disc rotates in the loosened direction of the flexible chain.
In the embodiment, the sand disturbance system obstructs the water current by the baffle immerges in the water current all the time, which increases the kinetic energy of the water current through the spacing between baffle edge and riverbed. The kinetic energy of the water current is used sufficiently to directly disturb and flow away sediment, which completely controls the inundation and enhance the effect of disturbing sand. Moreover, the system has a simple structure and is prone to form a large-scale disturbing sand project in vast water area, in particular to disposed in the Yellow River, the water current of which carries abundant sediment and is not suit for sailing, therefore the open water area can be used to construct large-scale sand disturbance project which is consisted by sand disturbance system according to the embodiment. In the large-scale sand disturbance project, the width of baffle or floating body is disposed according to the flux of the Yellow River to disturb the maximum sand, and a plurality of sand disturbance boats are disposed in series from the middle reaches of the Yellow River to the Yellow River estuary. Through the disturbance of sand disturbance boat, which loosens or flows up the riverbed sediment and changes riverbed section morphology, such that the section becomes narrow and deep. By use of the sand transfer ability of sand disturbance water current according to the embodiment, abundant sand can be transferred to sea, in particular the coarse sand on riverbed is disturbed and transferred to sea, which enhance the riverway's sand transfer ability. Through promoting the sand disturbance system according to the embodiment in large area, the sate of “aboveground river” of the Yellow River can be changed completely.
When the Yellow River floods, the sand disturbance boat of the embodiment can widen the riverway in a short time, increase the riverway's water passing ability, and control the inundation of the Yellow River.
Furthermore, the sand disturbance system in the embodiment also includes generator 5, which is connected to the rotation axis of the wheel disc 3 by transmission 9, when the wheel disc 3 rotates, the generator 5 is driven for generating power.
The above technical solution not only uses the structure of floating body and baffle to realize sand disturbance, but also use the movement of floating body running downstream to drive the wheel disc to rotate, and the wheel disc's rotation transfers to the generator for generating power.
Embodiment 2 of the Sand Disturbance System.
As shown in
The technical solution of the present embodiment enables the floating body not only to run downstream for sand disturbance but also to run upstream back to the starting position under the power device's driving so as to restart the next sand disturbance.
During the sand disturbance stops and the floating body 1 runs upstream back, the baffle 2 is preferably moved out of the water current so as to reduce resistance, as shown in
In the above technical solution, the baffle pivotally connected to the floating body may conveniently changes positions. When the floating body is running downstream for sand disturbance, the baffle is inserted into water; and when it is running upstream and the sand disturbance stops, the baffle is moved away from water to reduce resistance. Furthermore, during sand disturbance downstream, the amount of the thrust borne by the baffle may be adjusted by adjusting the angle of the baffle with water so as to accommodate different practical needs.
Embodiment 3 of the Sand Disturbance System
As shown in
The technical solution of the present embodiment enables a plurality of floating bodies not only disturb sand at the same time when running downstream, but also run upstream back to the starting position under one power device's driving.
In the Embodiment, when a plurality of floating bodies 1 disturb sand downstream, a plurality of baffles 2 are inserted into the river at the same time; During the sand disturbance stops and a plurality of floating bodies 1 runs upstream back, a plurality of baffles 2 are moved out of the water current so as to reduce resistance. Specifically, When a plurality of floating bodies 1 run downstream for sand disturbance, the second power device 8 drives the pivot spindle 7 of each floating body 1 to rotate so as to drive each baffle 2 to rotate, and to keep a spacing between the baffle 2 and the riverbed. When the floating bodies 1 runs upstream and the sand disturbance stops, the second power device 8 drives the pivot spindle 7 of each floating body 1 to rotate so as to drive the baffle 2 to rotate and until the baffle 2 is upwarping and moves away from the water current.
In the above technical solution, a plurality of sand disturbance boats are disposed in series along water current, a plurality of floating bodies 1 running simultaneously enhances the disturbance to the sediment of riverbed, and one power device drives wheel discs to rotate with winding the first flexible chain to drive all the floating bodies run upstream.
Furthermore, in this embodiment, the generator 5 can also be disposed to be connected to the rotation axis of wheel disc 3 via transmission 9, and when a plurality of sand disturbance boats in this embodiment run downstream, the push force of the water current to baffle 2 increases, such that when the wheel disc 3 is driven to rotate, the power of generating power of the generator 5 increases.
Embodiment 4 of the Sand Disturbance System
As shown in
Two flexible chains wind around the wheel disc independently. During work, one of the flexible chains is in winding state, and the other flexible chain is in loose state; One of floating bodies runs downstream with the push of water current, obstructs water current to disturb sand, and drives the wheel disc to rotate; the other floating body runs upstream under the drive of the rotated wheel disc, and the two floating bodies run downstream and upstream alternately.
Furthermore, in the embodiment, the generator 5 is connected to the rotation axis of wheel disc 3 via a transmission 9 and a commutator 10 when the two floating bodies 1 run downstream and upstream alternately, the commutator 10 can change the rotating direction of the rotation axis of the wheel disc 3, such that the generator 5 generates power continuously.
In the above technical solution, the two floating bodies disturb sand alternately and the running scopes which are not overlapped can avoid the interlacement and jam between the floating body and flexible chain.
Embodiment 5 of the Sand Disturbance System
As shown in
the combination of two group wheel discs, flexible chains and floating bodies are further used, wherein the two floating bodies disturb sand alternately, the two wheel discs drive one generator for generating power, and an engaging and disengaging gear control the connecting and disconnecting of the wheel disc with the generator. The two floating bodies generate power downstream and return back upstream alternately, wherein, the power device drives the floating body to be back upstream. Therefore, the generator can generate power continuously with the drive of the two wheel discs. The returning velocity of the floating body upstream is preferably higher than the velocity of the other floating body running downstream, which can ensure that the returned floating body has the time interval for receiving the baffle to avoid the abrupt power change of generating power and ensure that the generator can generate power continuously.
Embodiment 6 of the Sand Disturbance System
As shown in
The third power device of the sand disturbance system in the embodiment drives the floating body to form a preset relative velocity difference with the water current, which increases correspondingly the kinetic energy of the water currents through the spacing between the baffle edge and the riverbed and makes the floating body disturb sand neatly.
Embodiment of the Sand Disturbance Method
As shown in
Step 100: The baffle disposed on the floating body is inserted into the water current, a spacing is present between the baffle edge and the riverbed, and an angel is formed between the baffle and the flowing direction of the water;
Step 200: The baffle drives the floating body to run downstream with the push of water current, and the water current is obstructed by the baffle and flows through the spacing to flow away sediment.
Wherein the floating body is connected to one end of a flexible chain; the other end of the flexible chain is wound around a wheel disc fixedly disposed relatively to the water current. Therefore, when the baffle drives the floating body to run downstream with the push of water current, the step 300 can further be executed. The step 300 is that the floating body drags the wound flexible chain to be loosened and the dragged flexible chain drives the wheel disc to rotate. The connected flexible chain can receive the floating body back conveniently to the start position when the sand disturbance stops.
The sand disturbance method of the embodiment can be specifically executed by the embodiments of the sand disturbance system according to the present invention. The baffle inserted into the water current drives the floating body to run downstream together with the push of the water current, the water current is obstructed and flows through the spacing between the baffle edge and the riverbed to disturb and flow away the sediment of the riverbed. With the running of the floating body, the sediment on the area the floating body passed all can be disturbed and flowed away.
In the technical solution of the embodiment, the obstructing of baffle to the water current increases the kinetic energy of water currents through the spacing between the baffle edge and the riverbed such that the sediment on the bottom and two sides of the riverbed is disturbed and flowed away, which increases the sand disturbance effect.
Furthermore, based on the embodiment, the horizontal movement of the floating body is transformed to the rotation of the wheel disc via the flexible chain for generating power. Therefore, the rotation axis of the wheel disc can be connected to a generator, when the flexible chain drives the wheel disc to rotate, the rotating wheel disc drives the generator for generating power.
The adoption of the above solution not only realizes the sand disturbance and sand control but also is used for generating power, which makes use of the water resource and enhances the economic benefit.
Based on the embodiment, to ensure the operational continuity of the floating body disturbing sand, the following steps can be executed after the floating body runs until the flexible chain is loosened from the wheel disc, and the floating body is driven to return upstream.
Step 400: A first power device is started to drive the floating body to run upstream.
Step 500: During the floating body running upstream, the wheel disc rotates to wind up the flexible chain.
The above first power device may be fixedly disposed relatively to the water current and be connected to the wheel disc to drive the floating body to run upstream through driving the wheel disc to rotate.
In order to reduce the resistance of the floating body returning upstream, before starting the first power device, the baffle may be moved away from the water current, for example, when one end of the baffle is pivotally connected to the floating body, as described in above embodiment of the sand disturbance system, the horizontal pivot spindle between one end of the baffle and the floating body is be driven until the pivotally connected baffle rotates to warp over the water surface or float on the surface so as to be moved away from the water for resistance reduction.
The sand disturbance method in accordance with the present invention may be further provided with one wheel disc, two flexible chains and two floating bodies. When one of the two floating bodies runs downstream and drags the flexible chain to drive the wheel disc to rotate, the rotation axis of the wheel disc drive the generator for generating power. And the rotation of the wheel disc winds around the other flexible chain to drive the other floating body to run upstream. The two floating bodies run downstream and upstream alternately, and the commutator enables to change the rotating direction of the wheel disc, which can insure that the generator can generate power continuously. The above technical solution can be realized by adopting the device in the embodiment 4 of the sand disturbance system according to the present invention.
The sand disturbance method in accordance with the present invention may be further provided with two groups of wheel discs, flexible chains and floating bodies which are connected together, one group includes a first wheel disc, a first flexible chain and a first floating body, which operate as the above described method embodiment, and the other group includes a second wheel disc, a second flexible chain and a second floating body, which also operate as the above described method embodiment. The work flow of the two system's cooperative work is specifically as follows: when the first floating body runs downstream and the first flexible chain is dragged to drive the first wheel disc to rotate, the rotation axis of the rotating first wheel disc is engaged with a generator via a first clutch and drives the generator to rotate for generating power via a commutator, at the same time, the second wheel disc connected to the second floating body is disconnected to the generator, and the power device drives the second disc to rotate. The rotating second wheel disc winds the second flexible chain connected to the second wheel disc, and the second flexible chain drags the floating body connected to second flexible chain to run upstream in water current. The two floating bodies run downstream and upstream alternately and the clutches respectively connected to the two floating bodies engage with the generator when the connected floating body runs downstream and disconnected from the generator when the connected floating body runs downstream. The velocity of the power device driving one floating body to run upstream may be equal to, preferably higher than that of the other floating body running downstream, which ensures that the returned floating body has a time interval to receive the baffle and avoids the abrupt change of power to ensure the continuous generating power of the generator. The above technical solution can be realized by adopting the device in the embodiment 5 of the sand disturbance system according to the present invention.
In the sand disturbance method according to the invention, a third power device such as an engine may be disposed. When disturbing sand, the third power device drives the floating body to run so as to form a velocity difference between the floating body and the water current. The velocity difference is a preset value which may be a positive one or a negative one. When the preset velocity difference is a positive one, the third power device drives the floating body to run downstream and when the preset velocity difference is a negative one, the third power device drives the floating body to run upstream. In the embodiment, the relative velocity difference between the floating body and the water current can be up to the preset value through adjusting the power of the third power device, that is, when the floating body is driven to run upstream, the power of the third power device is much higher than that of the floating body runs downstream. The sand disturbance method of the embodiment forms a preset relative velocity difference between the floating body and the water current through the power device's driving, which increases the kinetic energy of the water currents through the spacing between the baffle edge and the riverbed and makes the floating body perform sand disturbance neatly.
The sand disturbance method of the present invention may specifically executed by any one embodiment of the sand disturbance system in accordance with the present invention. However, it is not only limited to this. The sand disturbance system adapting the baffle obstruct water current and make the water current through the spacing between the baffle edge and the riverbed to current away the sediment of riverbed may also be used to execute the sand disturbance method of the present invention.
Though illustration and description of the present disclosure have been given with reference to preferred embodiments thereof, it should be appreciated by persons of ordinary skill in the art that various changes in forms and details can be made without deviation from the spirit and scope of this disclosure, which are defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 200810239060.3 | Dec 2008 | CN | national |
