JPH01247607A - Underground heat accumulation type snow melting method and device therefor - Google Patents

Abstract

PURPOSE:To prevent the flood phenomenon due to the water due to the melting of snow by feeding snow into an underground heat accumulation type snow melting tank which leads to a sand layer or conglomerate layer under the ground and melting snow speedily and at a low cost by utilizing the accumulated heat on the periphery of the tank. CONSTITUTION:A snow melting tank 1 which leads from the ground surface 3 to a sand layer or conglomerate layer 7 under the ground is buried, and a cover plate 4 is installed onto the upper surface of the snow molting tank 1, and snow 2 is thrown in by opening the cover plate 4 in winter, and after throwing-in, the cover plate 4 is closed tightly. A heating body 5 built in the intermediate part of the side wall of the tank is allowed to generate heat for a certain time, and said heat is irradiated inside the snow melting tank 1, and snow is molten, and the heat is accumulated in the ground layer on the periphery of the tank. After the stop of heat generation, the heat accumulated in the ground layer on the periphery of the tank is irradiated naturally inside the tank, and the snow 2 thrown in is molten, and the water generated by the melting of snow is allowed to permeate into the sand layer or conglomerate layer 7 under the ground from the lower opened port 8 of the snow melting tank 1.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method and device for treating snow that accumulates in residential areas, plazas, walkways, etc., and in particular to a method and device for treating snow that accumulates in residential areas, plazas, walkways, etc. The present invention also relates to a method and apparatus for preventing flooding caused by snowmelt water during the snowmelt season and for allowing snowmelt water to permeate into the ground to replenish groundwater resources.

[Conventional technology]

In recent years, snow-melting methods using groundwater have become widely used to melt snow that has fallen on roads and buildings in snowy, cold regions. Water that flows down from roads and buildings into gutters directly flows into rivers and eventually into the ocean, gradually depleting local groundwater resources and worsening social problems such as poor soil quality.

On the other hand, snow removal from residential areas, plazas, walkways, etc. has been carried out by manual snow removal, mechanical snow removal, ground water sprinkling, and electricity snow removal, but all of these methods require labor, fuel costs, and electric power. This method had the disadvantage of being expensive, such as fees.

[Problem to be solved by the invention]

In order to solve the above problems, the inventors of the present invention have conducted repeated experiments with a snow removal method using an underground snow removal tank that connects to the underground sand layer or sand layer. It has been found that the snow 2 placed in the tank 1a melts into a mushroom-like shape as shown in Figure 4 by receiving natural heat from the strata surrounding the tank 1a within a few days.Based on this knowledge, the present invention was developed. This is the completed version.

The present invention solves the above-mentioned problem of conventional snow removal processing methods, which require a lot of labor, fuel, electricity, and other costs. The object of the present invention is to provide an underground heat storage snow melting method and device that prevents flooding due to water, and also allows snowmelt water to permeate into the ground to replenish groundwater resources and prevent ground subsidence.

[Means to solve the problem]

As a result of intensive research into specific means for achieving the above object, the present invention has been developed by introducing snow into an underground heat storage snow melting tank installed underground, and depositing snow into the middle part of the side wall of the underground heat storage snow melting tank. It has a built-in heating element, and in the winter, the heating element generates heat for a certain period of time, storing heat in the strata around the snow removal tank, and radiates heat into the tank to melt the snow put inside the tank.After the heat generation stops, The feature is that the heat stored in the strata around the snow melting tank is radiated into the snow melting tank to melt the snow that has been put in, and the melted snow water naturally permeates underground through the opening at the bottom of the snow melting tank. It is something.

Furthermore, the underground heat storage snow removal tank is characterized by having a built-in heating wire for defreezing around the outer frame on which the lid plate is attached.6 [Operation] In the present invention, the underground heat storage snow removal tank Snow is poured into the tank, and the natural heat in the ground and the heat generated by the heating element built into the side wall of the tank are used, and after the heat generation has stopped, the heat radiated from the geothermal heat storage into the tank due to the heat generated by the heating element is used. It has the effect of actively melting the snow put into the tank from the middle part of the tank, thereby promoting snow melting, and in the process of the snow melt water naturally penetrating underground from the bottom opening, the soil is purified by the sand layer and the sand layer. It does not cause contamination of groundwater and has the effect of increasing the supply of groundwater resources.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the embodiment used in the underground heat storage snow removal method of the present invention buries a snow removal tank 1 that extends from the ground surface 3 to the underground sand layer or sand layer 7. The shape of this snow removal tank 1 may be any suitable shape, such as a cylinder or a rectangular box.
Materials include concrete, steel, resin, and FRP.

A lid plate 4 is provided on the top surface of the snow removal tank 1 installed in the ground in this manner. In winter, the lid plate 4 is opened and snow 2 is poured in as shown in Fig. 1. After the snow is poured, the lid plate 4 is closed. It is sealed, and a heating element 5 built in the middle part of the side wall of the tank generates heat for a certain period of time and radiates the heat inside the snow melting tank to melt the snow thrown into the tank.The heat is stored in the strata around the tank, and after the heat generation stops. The heat stored in the strata around the tank is naturally radiated into the tank to melt the snow 2 as shown in Figure 2, and the melted snow water is poured underground through the lower opening 8 of the snow melting tank 1. By infiltrating the sand layer or sand layer 7 of the soil, it is possible to prevent flooding caused by snow melt water and to replenish groundwater resources.

Note that a very small amount of power is sufficient for the heating element 5 to generate heat.

Next, the reason why the heating element 5 is built into the middle part of the side wall of the snow removal tank 1 in this embodiment will be explained.

Figure 3 shows the case of an experiment in which a snow removal tank 1a without a built-in heating element was buried so as to extend from the ground surface 3 to the underground sand layer or sand layer 7. Over a few days, Snow 2 receives natural heat from the strata surrounding 4+11a and melts into the shape shown in Figure 4.

That is, in this case, the temperature distribution of the strata around the snow removal tank 1a is as shown in FIG.
The snow 2 inside starts to melt near the peripheral wall of the lower part of the tank 1a, where the temperature is relatively high, and gradually forms a mushroom shape and slides downward, melting into the shape shown in FIG.

Then, the melted snow water permeates into the underground sand layer or sand layer 7 through the lower opening 8 of the snow melting tank 1a.

Therefore, in the snow-blowing tank 1a, the heating element 5 is built into the portion where the snow 2 remains in contact with the side wall of the snow-blowing tank 1a in the state shown in FIG. It was found that the snow melting effect in the tank could be further promoted by heating for a certain period of time.

In addition, in this embodiment shown in FIG. 1, when the heating element 5 generates heat, the strata around the side wall of the snow removal tank 1 has a temperature distribution as shown in FIG. 2, and heat can be stored in the surrounding strata, so that after the heat generation stops, Also, the snow 2 thrown in can be melted for a long time by dissipating heat into the snow melting jfa 1.

It is also possible to use a rainwater underground infiltration facility as a snow melting tank, and by using a rainwater underground infiltration facility, it is also possible to store the thermal energy of rainwater in the strata surrounding the snow melting tank. In addition, the melting of the snow put into the infiltration facility is accelerated by direct rainwater, further increasing the snow-melting effect.

Furthermore, in another embodiment shown in FIG. 5, the snow-blowing tank 1 installed underground removes the cover plate 4 in winter and pours snow into it to melt the snow using underground heat. This is because water seeps in between the outer frame where the lid plate is attached and freezes.

Since the lid plate 4 becomes difficult to open, in this embodiment, a heating wire 6 for thawing the freeze is built in around the outer frame on which the lid plate is attached, and when electricity is applied to the heating wire, the heating wire generates heat to thaw the freeze. Since the lid plate 4 can be opened and closed easily, loading and removing snow can be done easily.

〔Effect of the invention〕

The underground heat storage snow removal method using the above-mentioned snow removal tank of the present invention is to install a snow removal tank underground that extends to the sand layer or sand layer, and to deposit snow into the snow removal tank, and to deposit the accumulated snow into the middle of the tank side wall. The built-in heating element generates heat for a certain period of time and dissipates the heat into the snow melting tank, which actively melts the snow thrown into the tank from the middle of the tank.The heat is stored in the strata around the snow melting tank, and after the heat generation stops. The heat stored around the snow melting tank can be dissipated into the snow melting tank to promote the melting of the snow that has been put into the tank, and the melting water can penetrate into the ground, making it possible to quickly and at low cost. This method makes it possible to melt snow, prevent flooding caused by snowmelt water, and replenish groundwater resources, making maintenance and management easier, and has the effect of reducing facility and maintenance costs.

Furthermore, since a heating wire for defrosting the snow is built into the outer frame around which the lid plate of the snow removal tank is attached, it can be easily opened and closed when dumping snow into the snow removal tank in winter.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional hot spring diagram showing the installation of the underground heat storage snow melting tank in the embodiment of the present invention, showing the state before heat generation, and Figure 2 is a hot spring diagram showing the cross section of the underground heat storage snow melting tank installation showing the state after the heat generation has stopped. , Figures 3 and 4 are cross-sectional diagrams of hot springs with underground heat storage and snow removal tanks installed, showing conventional examples;
FIG. 5 is an enlarged sectional view of the upper part of an underground heat storage snow melting tank showing another embodiment. 61...Ground heat storage snow melting tank; 2...Snow;
3... Ground surface, 4... Lid, 5... Heating element, 6... Heating wire for defrosting, 7... Sand layer or sand layer.

Claims (3)

[Claims] (1) Using an underground heat storage snow melting tank that connects to the underground sand layer or sand layer, after putting snow into the snow melting tank in winter,
An underground heat storage snow melting method characterized in that the snow melting tank is sealed and snow is melted using heat stored around the tank. (2) A heating element is built into the middle part of the side wall of the underground heat storage snow removal tank, and in winter, the heating element generates heat for a certain period of time, dissipating the heat into the snow removal tank and melting the snow thrown into the tank. In addition, heat is stored in the strata around the snow melting tank, and after the heat generation stops, the heat stored in the strata around the snow melting tank is radiated into the snow melting tank to melt the snow that has been put into the snow melting tank. An underground heat storage snow melting method. (3) A heating element is built into the middle part of the side wall of the underground heat storage snow removal tank,
An underground heat storage snow melting device characterized in that a heating wire for defreezing is built in around an outer frame on which a lid plate of the underground heat storage snow melting tank is attached.