JPH108496A - Method for transporting sediment to disposal site such as reclamation site with improvement of sediment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously carry out reclamation and the improvement of ground by supplying filling fluid to a sediment in a course of transportation made through a sediment transporting device, and stirring and mixing them. SOLUTION: Earth and sand are transported to a disposal site such as a reclamation site as they are improved in a sediment transporting device, where a charge port 1 and a discharge port 2 are provided in the upper part of a housing H, and a transporting pipe Tp is connected to the discharge port 2. A crusher D is provided in the housing H, and a pressure feed device T for pressure feeding the sediment crushed by the crusher D through the discharge port 2 and the transporting pipe Tp to the disposal site is provided. A prescribed quantity of fluid is supplied to the sediment thrown in from the charge port 1, and the sediment and the filling fluid are stirred and mixed by the rotation of the crusher D for crushing a soil clod and a rock in the housing. In addition, when a transfer chamber in the rotor R of the pressure feed device T attains at the lowest stage, the mixture of the earth and sand and injected fluid in the transfer chamber is fed into the transporting pipe Tp by compressed air. Thus earth filling and the improvement of ground can be simultaneously carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supplying an injection fluid to earth and sand in an earth and sand transporting apparatus for transporting earth and sand to a disposal site such as a landfill site, stirring and mixing the soil, and reforming the landfill material.

[0002] In this specification, "soil and sand" is a general term for dredged sand, mud, or mountain soil from construction of a lake or the bottom of a sea, or construction soil, and the like, and "injected fluid" is a solution or milk solidified. It is a general term for materials, improvement materials, flocculants, dispersants, water reducing materials, and mixtures thereof.

[0003]

2. Description of the Related Art Conventionally, when transporting earth and sand to a disposal site such as a landfill, the earth and sand is directly pumped together with a large amount of water by a pump ship, or is transported and drained by an earth transport ship and then compressed air is used. Injections such as solidified materials have been injected into transported sediment, which has been transported to landfills and other disposal sites, and to which some moisture has been removed, and mixed with milk to stir and mix.

In order to solve various problems caused by pumping the above-mentioned earth and sand together with a large amount of water, the present inventors previously dispose of the earth and sand by using only wind power without using water. An earth and sand transportation device that can be pumped to the ground was provided and the effect was raised. (Japanese Patent Publication No. 7-76454) In other words, this earth and sand transport device has the earth and sand
A housing having a discharge port at a lower portion, a transport pipe connecting the discharge port of the housing and a disposal site such as a landfill, a crusher for crushing the earth and sand put into the housing, and crushed by the crusher. A device equipped with a pumping device for pumping the earth and sand to a disposal site such as a landfill through the discharge port of the housing and the inside of the transport pipe, and after crushing the earth and sand by a crusher provided in the housing for charging the earth and sand, The sediment is pumped to the landfill site such as a landfill through a transport pipe by a pumping device, and the sand is dropped from an open lower surface of a cyclone type discharge body disposed at the end of the sediment transport pipe for landfill.

[0005]

However, in any of the above-mentioned landfill methods, the landfill and the ground improvement have to be performed in separate steps, and both the construction period and the construction cost are high. The present invention uses the "soil transport device" of the above-mentioned prior invention, supplies an injection fluid to the soil during transportation to a disposal site such as a landfill, and reforms by stirring and mixing the soil and the injection fluid. It is another object of the present invention to provide a method for simultaneously performing landfill and ground improvement.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a method for transporting sediment to a landfill site such as a landfill site. Supply the injection fluid in an amount corresponding to the calculated amount of sediment, and inject the sediment by the rotation of the crusher in the housing and the movement of the sediment generated when the residual air in the transfer chamber in the rotor rises in the sediment. Stir and mix with the fluid,
It is a method of transporting sediment to landfills and other disposal sites while modifying the soil.

[0007] Further, the injection fluid is supplied from an arbitrary position of the transport pipe for transporting the soil into the transport pipe at a pressure higher than the internal pressure of the transport pipe, and various movements of the soil generated by the flow of the soil and air in the transport pipe. It is a method of transporting sediment to a disposal site such as a landfill while reforming the soil by mixing and mixing the earth and the injected fluid with energy.

Further, an injection fluid is supplied to the inside of the cyclone from an entrance of a cyclone type discharge body for dropping earth and sand transported by a transport pipe into a disposal site such as a landfill, and the earth and sand are injected by the moving energy of the blown earth and sand. It is a method of transporting sediment to a disposal site such as a landfill while agitating and mixing the fluid with the soil to reform the soil.

According to a first aspect of the present invention, when the injection fluid is supplied to the earth and sand in the earth and sand transporting apparatus, and the earth and the injection fluid are stirred and mixed, the amount of the earth and sand input is determined based on the rotation speed of the rotor at the lower portion of the housing into which the earth and sand are injected. Calculated, in advance, from the relationship between the amount of injection fluid and the strength due to the difference in the properties of the earth and sand confirmed by laboratory tests, the amount of injection fluid that matches the strength as a component of the landfill material with respect to the amount of earth and sand When the amount of sediment calculated from the rotation speed of the rotor is supplied from the upper part of the housing into which the earth and sand are supplied, the earth and sand and the injected fluid are transported while being mixed and stirred in the transport pipe, and transported to a landfill site such as a landfill. That is, the construction of the landfill material is finished.

According to a second aspect of the present invention, the internal pressure of the transport pipe for transporting the earth and sand is detected, and the injection fluid is supplied to the interior of the transport pipe from any position of the transport pipe at a pressure higher than the internal pressure. When transported to a landfill site such as a landfill, transportation is carried out while stirring and mixing in the landfill.

According to a third aspect of the present invention, when the earth and sand is dropped into a landfill disposal site, an injection fluid is supplied from the inlet of the cyclone type discharge body into the cyclone, and the injected fluid and the earth and sand are transferred by the moving energy of the blown earth and sand. Are mixed with stirring to modify the landfill material.

Since the present invention is configured as described above, it has the following functions. The injection fluid supplied into the housing is stirred and mixed with the earth and sand by the high-speed rotation of the crusher that crushes the earth and sand, and the compressed air remaining in the transfer chamber in the rotor after the earth and sand is sent from the housing is rotated by the rotor. Due to the movement of the earth and sand that occurs when it rises in the earth and sand, it is stirred and mixed with the earth and sand.

[0013] The injection fluid supplied into the transport pipe is a constantly changing flow of sediment in the transport pipe, that is, a flow of the sediment which is gathered by the compressed air and is to be averaged by gravity, and a central part of the sediment flow in the pipe. The vortex caused by the difference in the flow velocity caused by the friction between the pipe and the sand, and the backflow of the soil when the flow of the compressed air is stopped due to the upward inclination of the transport pipe in the transport direction, etc., is agitated and mixed with the soil.

The injection fluid supplied into the cyclone type discharge body is agitated and mixed with the earth and sand by the movement of the earth and sand in the discharge body and the discharge pressure of the earth and sand.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIGS. 1 and 2 are cross-sectional views of a housing and a rotor of a sediment transporting apparatus that transports sediment to a disposal site such as a landfill while modifying the soil. The earth and sand transportation device used in the method for transporting earth and sand while reforming according to the present invention connects the housing H having the earth and sand inlet 1 at the upper part and the outlet 2 at the lower part, and the outlet H and the disposal site. A transport pipe Tp,
A crusher D capable of crushing the earth and sand put into the housing H, and a pumping device T capable of pumping the earth and sand crushed by the crusher D to the disposal site through the discharge port 2 and the transport pipe Tp. It is an earth and sand transportation device provided with.

The pressure feeding device T has a cylindrical rotor case portion 4 formed in the housing H by opening a receiving port 3 for the earth and sand crushed by the crusher D in the peripheral wall 4a.
A rotor R rotatable within the case portion 4, and a plurality of transfer chambers 5 that are periodically communicated with the receiving port 3 when the rotor R rotates, on the outer peripheral portion of the rotor R. Blades 6 are radially protruded, and the outlet port 2 is formed at one end wall 4 a of the rotor case portion 4 at a distance from the receiving port 3, and the other end wall 4 is formed.
b, an air outlet 7 for high-pressure air is formed opposite to the outlet 2, and the transfer chambers 5 periodically communicate with the outlet 2 and the air outlet 7 when the rotor R rotates. It is configured to be. In the figure, reference numeral 8 denotes an air chamber for receiving high-pressure air from a compressor (not shown) via a conduit.

A predetermined amount of injection fluid is supplied to the earth and sand injected from the upper inlet 1 of the housing H of the earth and sand transport device, and the earth and sand and the injection fluid are separated by rotation of a crusher D for crushing the earth mass and rocks in the housing. Stir and mix. When the transfer chamber 5 in the rotor R installed at the lowermost part of the housing reaches the lowermost stage, the mixture of the earth and sand in the transfer chamber and the injection fluid is sent into the transport pipe Tp by compressed air.

At this point, the residual compressed air in the transfer chamber 5 is:
The mixture moves upward with the rotation of the rotor R, and is further stirred and mixed by the movement of the mixture by being supplied to the mixture passing through this region. In the transport pipe, the mixture sent into the transport pipe Tp is gathered by compressed air in a time lag when the mixture and the compressed air are alternately fed,
The flow of the mixture to be averaged by gravity, the vortex caused by the difference in the flow velocity caused by the friction between the center of the flow in the pipe and the pipe and the mixture, and the flow of compressed air caused by the upward inclination of the transport pipe in the transport direction Is transported to a disposal site such as a landfill while being further stirred and mixed by the backflow of the mixture at rest, and sent to the cyclone discharge body S shown in FIG. The mixture sent to the cyclone type discharger S is discharged to a disposal site such as a landfill while further stirring and mixing the mixture in the discharger by the movement of the mixture in the discharger and the discharge pressure.

Embodiment 2 A predetermined amount of injection fluid is supplied to earth and sand sent into the transport pipe Tp via the housing H from an arbitrary position of the transport pipe at a pressure exceeding the internal pressure of the transport pipe. Due to the time difference when the mixture of earth and sand and the injection fluid are alternately fed into the transport pipe, the flow of the mixture that is gathered by the compressed air and tries to be flattened by gravity, and the central part of the flow in the pipe Vortex caused by friction between the pipe and the mixture due to the difference in flow velocity, and furthermore, the landfill is agitated and mixed by the backflow of the mixture when the compressed air flow is stationary due to the upward slope of the transport pipe in the transport direction, etc. It is transported to the same disposal site and sent to the cyclone discharger S. The mixture sent to the cyclone type discharge body S is discharged to a disposal site such as a landfill while being further stirred and mixed by the movement of the mixture in the discharge body and the discharge pressure.

The manner of supplying the injection fluid to the transport pipe Tp is not limited, but a spiral flow A is generated in the direction of pipe flow of earth and sand using a plurality of nozzles N (FIG. 3, It is more effective to supply them in such a manner as shown in FIG.

Embodiment 3 A predetermined amount of injection fluid is supplied from the inlet E of the discharge body to the earth and sand transported to the disposal site such as a landfill site through the housing H and the transport pipe Tp and sent to the cyclone discharge body S.
The mixture of earth and sand and the fluid to be injected is discharged to a disposal site such as a landfill while being stirred and mixed by the movement of the earth and sand in the discharge body and the discharge pressure (see FIG. 5). In FIG. 5, F is a float.

The embodiments of the present invention have been described as the first, second and third embodiments.
Needless to say, these embodiments may be implemented alone or in combination depending on the conditions of improvement or site conditions.

[0023]

According to the present invention, the injection fluid is supplied to the earth and sand being transported by the earth and sand transportation apparatus, and the mixture is stirred and mixed. Therefore, the landfill and the ground improvement can be performed at the same time, and only the construction cost can be reduced. Instead, the construction period could be shortened. Also,
Since the injection fluid can be supplied from each part of the transportation device, economical soil improvement suitable for the properties of soil, improvement conditions, and site conditions could be performed.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a housing and a rotor of a sediment transporting apparatus used in a method of transporting sediment to a disposal site such as a landfill while reforming the soil according to the present invention.

FIG. 2 is a front sectional view of the same.

FIG. 3 is a conceptual elevation view of a method of stirring and mixing earth and sand and an injection fluid in a transport pipe.

FIG. 4 is a conceptual plan view of a method of stirring and mixing earth and sand and an injection fluid in a transport pipe.

FIG. 5 is a conceptual diagram of a stirring and mixing state of earth and sand and an injection fluid in a cyclone type discharge body.

[Explanation of symbols]

 H Housing D Crusher T Pumping device R Rotor Tp Transport pipe S Cyclone discharge body N Nozzle A Spiral flow E Inlet F Float 1 Sediment inlet 2 Discharge port 3 Sediment receiving port 4 Rotor case part 4a Perimeter wall (one side) 4b Perimeter wall (other side) 5 Transfer chamber 6 Blade 7 Air jet port 8 Air chamber

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toro Taga 2-174-4 Yanagibashi, Taito-ku, Tokyo Inside Onoda Chemico Co., Ltd. (72) Inventor Osamu Shibata 2-174-4 Yanagibashi, Taito-ku, Tokyo Onoda Inside Chemiko Co., Ltd. (72) Inventor Kenji Nakatsuru 2-17-4 Yanagibashi, Taito-ku, Tokyo Onoda Chemiko Co., Ltd.

Claims (3)

[Claims] 1. An earth and sand calculated from a rotation speed of a rotor of the earth and sand transportation device, the amount of the earth and sand being input from an upper portion of a soil and earth loading housing of the earth and sand transportation device for transporting earth and sand to a disposal site such as a landfill. Supplying a suitable amount of the injection fluid, and mixing and mixing the earth and the injection fluid by the rotation of the crusher in the housing and the movement of the earth and sand generated when the residual air in the transfer chamber in the rotor rises in the earth and sand. And transporting sediment to landfills and other landfill sites while reforming the soil. 2. Injecting fluid is supplied into the transport pipe from an arbitrary position of the transport pipe which transports the crushed earth and sand which is thrown into the earth and sand input housing of the earth and sand transport apparatus and transports the crushed earth and sand, A method of transporting sediment to a disposal site such as a landfill site while agitating and mixing the earth and sand with various kinds of kinetic energy of the earth and sand generated by the flow of the earth and air in the transport pipe, and reforming the earth and sand. 3. A cyclone-type discharge body for injecting fluid from an inlet of a cyclone-type discharging body for transporting crushed earth and sand into a sediment charging housing of the earth and sand transportation device and transporting the crushed earth and sand to a disposal site such as a landfill. The earth and sand and the injection fluid are supplied by the moving energy of the earth and sand that is supplied inside the cyclone and blown out.
A method of transporting sediment to a landfill or other disposal site while agitating and mixing in the cyclone to modify the soil.