KR100324889B1 - Filling method to protect hidden pipe - Google Patents

Abstract

The present invention relates to a method for filling a protective layer of various buried pipes, such as sewage, water, and gas pipes, and more specifically, in a normal state in which a leak does not occur after buried pipes during buried construction in general civil engineering or construction sites. The present invention relates to a method of embedding a tube using coarse clay formed to hold the tube.

Therefore, the method of filling the protective layer of the buried pipe of the present invention, first, the bottom portion of the bone 100 of a predetermined depth is formed in the tube protective layer 300, wherein if the ground of the bottom of the bone 100 is soft, the additional poor ground replacement Layer 200 is first formed. The pipe 400 to be protected is installed on the upper portion of the tube protection layer 300 to form a high-clay soil filling layer 500 filled with high-clay, and the field-occurring soil is filled thereon to form a field-generating soil filling layer 600. And it is characterized in that it is configured to form a final pavement or road layer (700).

Description

Filling protective layer of buried pipe {FILLING METHOD TO PROTECT HIDDEN PIPE}

The present invention is buried in the civil engineering or building construction site using the coarse clay formed to maintain a steady state of the pipe does not occur in the construction of various pipes, such as sewage, water and gas pipes after the installation of the pipe It relates to a method of filling the protective layer of the buried pipe.

Originally, the sewage pipes originated from artificially constructed waterways for the purpose of drainage. It is said that the sewage pipes were born because there are many problems to be used as sewage pipes to transfer the sewage to the treatment plant.

In the past, water leakage through underground sewage pipes was not a problem, but now it has a significant problem. The sewage treatment plant is constructed first in the Shigahwa area, which is a maintenance area for inflow and public sewerage. It is well known that the damage of water supplies is serious.

In order to solve these problems, it is inevitable that the accuracy and seamless construction and after-sales management of the pipeline work are inevitable, so that a huge reinforcement budget will be invested afterwards to prevent waste of time and manpower, and to develop a reliable refilling method to protect the pipeline. Was required.

As is well known to those skilled in the art for this method, in order to bury the pipes of various purposes such as sewage pipes, water pipes, gas pipes and the like for the protection of the pipes that can be broken in the future pressure from the outside After removing large and miscellaneous materials such as rocks and stones at the point where they are to be buried, the pipes are installed and connected, and the pipes are filled by backfilling the raw soil generated during the burrowing process. In order to protect the pipes from the ground, the slopes of high quality sand or soil are inclined to fit the construction specifications at the lower point of the pipeline to be buried, and after the pipes are connected, the high quality sand or soil is laid again. Therefore, the pipe laying work was carried out.

The high-quality sand or soil generally refers to soil from which foreign matters, such as stones of 40 m / m or more in size, mud lumps of 75 m / m or more, tree roots, garbage and coagulated soil, are removed. Therefore, the use of quality raw soil in the actual construction site has a problem that must be accompanied by an additional process for removing such foreign matter.

Conventional methods for backfilling soil have not taken into account the nature, soil and dynamic properties of the soil. In addition, when groundwater occurs in the ground after digging, pipes are connected and laid after excluding groundwater only. After a considerable period of time, groundwater flows back to the point where the pipes are buried, so that the ground subsides and, in case of severe ground, this leads to the road. It can be seen that collapse often occurs.

As a means to prevent the inflow of groundwater, the concrete retaining wall was installed on the upper part of the pipe or the ground was cleaned up such as foundation pile construction at the lower part of the pipe.

In addition, if you look at the investment ratio of the sewage treatment business, 50 ~ 60% of the sewage treatment plant part, 30 ~ 40% of the sewage pipe part, and 5-10% of the other part will be spent. Although the government and related academia have researched and developed a considerable portion of sewage treatment methods for improvement, the sewage pipe part, which accounts for 30 to 40% of the total construction cost, has been implemented in the form of following the method that has been used conventionally without any technical development. It is a cause of construction failure by uniformly applying the conventional method without considering other topographical conditions and other civil engineering conditions.

In particular, due to the nature of underground pipelines and the installation of subsidiary projects such as site construction, most of them may be neglected and poorly constructed. Excessive costs are required, and such repair works cause traffic jams, causing civil complaints due to the inconvenience of the people.

In this connection, in the undergrounding of sewage pipes, water pipes, and gas pipes, which are buried underground, conventionally, as shown in FIG. 1, a valley 1 is formed by digging at an appropriate depth and a predetermined length, and a base concrete layer is formed on the bottom surface of the valley 1. (2) is provided and supported with a plurality of pipes (3) connected to the foundation concrete layer (2) and in the valleys (1) to protect the pipes (3) supported by the foundation concrete layer (2) It has a pipe protective layer (4) which is filled with soil so as to be filled with soil, and on the pipe protective layer (4) has a configuration in which the pavement (5), such as concrete or asphalt, is parallel to the existing road surface, the base concrete during construction There is a possibility of civil complaints due to the long curing time of the layers, and even after water, such as domestic sewage and sewage flows into the valley, the water remains in the soil and the durability of the pavement increases as the groundwater level increases. Of course, there are problems such as degradation is provided as a cause of subsidence.

In order to solve this problem, the Republic of Korea Utility Model Registration No. 0179497 is a bone 10 is made to a certain depth as shown in Figure 2 and the bottom surface of the bone 10 has a plurality of holes in the longitudinal direction in some of the circumferential surface The formed drain pipe 20 is connected in two rows, and an inner portion of the drain pipe 20 connected in two rows is provided with a pipe support part 30 in which soil and a hardener are mixed at an appropriate ratio, and the pipe support part 30 is appropriate. A plurality of recesses are formed at intervals, and both sides of the pipe support part 30 are filled with gravel 40 so as to cover the through-hole formed in the drain pipe 20, and the pipe support part 30 has a plurality of pipes. It is connected in the longitudinal direction in the supported state and the pipe support 50 is installed in each recessed portion of the pipe support portion 30 in a state of supporting the connection portion of the pipe (80) The valley 10 is filled with soil to protect the pipes supported by the pipe support 30, and includes a pipe protection layer 60, and the paving material 70 is parallel to the existing road surface on the pipe protection layer 60. ), Which is covered with a pipe buried structure, which is covered with water, such as household sewage generated in each home or business, when water flows into the pipe buried part, the water is immediately drained through the drain pipe, so the groundwater level As the water content is lowered, the moisture content in the soil is lowered, thereby improving durability of the pavement and thus preventing ground subsidence, thereby preventing the pipe from being damaged.

However, unlike the present invention, it is apparent that there is a problem in that water, such as household sewage generated in each home or business, is infiltrated and that it is not substantially a fundamental countermeasure by draining it through a drain pipe.

The present invention has been made to solve the problems of the prior art as described above, the main object of the present invention is to prevent the breakage and depression of the pipeline buried underground.

Another object of the present invention is to maintain the perfect pipeline construction to promote the treatment efficiency of the sewage treatment plant.

It is another object of the present invention to prevent generation of sewage due to inflow of unknown water and breakage and depression of pipelines, thereby preventing pollution of groundwater and helping to generate and permanently protect the natural environment.

Still another object of the present invention is to allow the extension of the service life by receiving more robust protection while maintaining the existing service life through the sewer pipe wrapped with the pipe protection layer and the filling layer.

1 and 2 is a cross-sectional view showing a conventional pipe laying method,

3 is a cross-sectional view showing a protective layer filling method of a buried pipe of the present invention,

4 is a cross-sectional view taken along the line A-A of FIG.

<Explanation of symbols for the main parts of the drawings>

1. Goal 2. Foundation concrete layer

3. Pipe 4. Pipe Protection Layer

5. Packing material 10.

20.Drainage pipe 30.Pipe support

40 Pebbles 50.Pipe support

60.Pipe protective layer 70.Packaging material

80.Plumbing 100.Goal

200. Poor Substitute Substitution Layer 300. Pipe Protection Layer

400. Piping 500.

600. Filled soil on site 700. Pavers or road layer

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be more apparent from the following detailed description based on the accompanying drawings in order to achieve the above object.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

In the method of filling the protective layer of various buried pipes, such as sewage, water supply, and gas pipes of the present invention, the bottom portion of the bone 100 dug at a predetermined depth and width is formed with a tube protective layer 300, wherein the bottom of the bone 100 is formed. If the ground is soft, a separate poor ground replacement layer 200 is to be formed first. A pipe 400 to be installed on the upper portion of the pipe protection layer 300 is installed, and a filling layer 500 filled with coarse clay made to be used for improvement of defective ground or soft ground and for forming a protective layer of buried pipe. Filling the site-produced soil on it to form a site-produced soil filling layer 600, and various embedded pipes, characterized in that configured to form the final pavement or road layer 700 on the site-produced soil filling layer 600 It relates to a method of filling a tube protective layer for the protection of.

The present invention configured as described above will be described in more detail with reference to FIG. 3. In order to bury various pipes such as sewage pipes, water pipes, and gas pipes, according to the related pipe buried construction instructions, the buried parts are excavated with a predetermined depth. A valley 100 having a width is formed. At this time, the bottom part of the bone 100 may be a soft ground or a poor ground layer according to the construction site according to the mixing ratio of the cement in order to prevent the damage of the pipe with the accompanying settlement of the buried pipe due to ground subsidence By increasing the strength by increasing the strength can be formed the poor ground replacement layer 200 to improve the poor ground to have the effect of more than the conventional soil cement (piling) foundation (piling) foundation work.

A pipe protection layer 300 is formed on the bottom of the valley 100 or on the top of the poor ground replacement layer 200 to install a pipe 400 to be buried on an upper surface of the pipe protection layer 300. Cement, quicklime, and waste tire flakes are mixed by using a mixer while appropriately adjusting cement, quicklime, and waste tire flakes on the site-generated soil generated during the rupture, and then sprayed and solidified by using a paraffin. Filling the soil to form a high-clay soil layer 500 to protect the tube.

The tube protective layer 300 and the high-clay soil filling layer 500 is added to the field-occurring soil by adding 2-7% of the general cement to the weight ratio of the site-occurring soil, and then mixing and stirring the solidifying agent using a water-soluble paraffin using a mechanical spraying machine. It is formed using coarse clay made by uniform mixing and stirring at the same time as uniform flesh.

In general, the addition rate of the general cement is generally added within 7% because it is not used well because the crack phenomenon may occur when 10% or more of cement is added during the construction of the soil cement. In addition, in order to prevent the impact of the tube protection layer 300 and the high-clay soil filling layer 500 and the impact of the various pipes in the process of making the high-clay soil, the waste tire finely crushed waste tire 10 with 1 to 2% It is made by adding more to 50%, and if the bottom is poor ground, it is to be formed by using the coarse clay made by adding 2 to 5% of quicklime with 1 to 2% of cement.

As described above, if the soil is poor in soil, the limestone is slightly added with cement to the soil to produce pozzolanic reaction by stabilizing the particles of soil and then mixing the special solidifying agent to stabilize the tube protective layer and foundation. The ground can be formed, and the waste tire flakes are used together with the cement in the field-produced soil to prevent the impact of the pipeline, and it can be compacted by spraying a hardener to prevent breakage and depression of the pipeline.

When the voltage protection according to the site conditions is applied to the tube protective layer 300 and the high-clay soil filling layer 500 formed as described above, the high impermeability, which is a characteristic of the solidifying agent, is exhibited, and the impermeability (10 ^-5 cm / sec or less) To increase the impermeability) and to minimize the uniaxial compressive strength to prevent tube breakage and depression from the top of the filling layer, and to pass through the tube protection layer or the filling layer even if the outflow occurs due to the breakage and depression of the pipe. It has a unique performance that can play a primary role, such as being filtered by the self-cleaning ability of the soil.

In particular, the groundwater inflow is an absolute challenge in the sewage pipelines and conduit laying conditions installed along the riverside, so that groundwater can be prevented and ground subsidence can be prevented by installing this method. The compaction machine refers to compacting the material in a dense state while applying energy to the floor by weight and vibration, and uniaxial compressive strength refers to the uniaxial direction of the column-shaped specimens of the soil rather than the three-dimensional directions (up, down, left and right). Up and down) refers to the strength that represents the maximum stress during compression that occurs during compression failure.

After filling with the soil generated in the field on the high-density soil filling layer 500, which is compacted according to the field conditions as described above, after forming the field-producing soil filling layer 600 and compacting work, the soil-filling layer 600 is finally made on the field-producing soil filling layer 600. As the paving material or road layer 700 is made, the pipe laying work is finished.

Hereinafter, a specific embodiment for solving the above object the present invention will be described.

(Example)

10 to 50% of crushed waste tires are added to the field-produced soil generated after the burrowing work for embedding the pipe, and 2 to 7% of cement is added thereto, and the above water is sufficiently mixed to make the mixed composition After solidifying and spreading the solidifying agent using water-soluble paraffin, which promotes solidification of Patent Registration No. 0211348 and water-proof effect evenly with a mechanical sprayer, the mixture is sufficiently stirred and mixed so that the composition and solidifying agent are mixed well. According to the characteristics of the soil soil to be constructed, the soil is laid at a height of 10-30 cm, and the construction guidelines for sewer pipes, water pipes, gas pipes, etc., namely, the types of pipes (steel pipe, cast iron pipe = 10cm, VR pipe, PC pipe = 20cm, PE pipe = 30cm) and the bottom of the pipe embedding point is to lay 10 ~ 20cm high quality sand as the foundation hole of rigid pipe. It is desirable to use 10 ~ 20cm, and if you stick to the compaction rate of soil while sticking to the guidelines as specified in the sewer protection and foundation work section of the sewage facility standard suggested by the Ministry of Environment of Korea, it can be seen in Table 1 below. As can be seen, the uniaxial strength of the pipe protection layer exerts 5 ~ 15㎏ / ㎠ or more, so that the pipeline does not interfere with water pressure and earth pressure, and it also shows sufficient support for the load of the vehicle and impervious force, resulting in sewage due to breakage and depression of the pipeline The sewage flow rate is 10 ^-5 cm / sec or less and impermeable water is leaked. If sewage leaks, even if the sewage is generated, the sewage passed according to the thickness of the foundation ground protection layer is not polluted, but not polluted. It can be seen that the groundwater turns into a leak, and in the case of poor ground, it is mixed by adding 2-5% of quicklime with 2-5% of cement. By stabilizing the particles of the soil and spraying the hardener can form a poor ground replacement layer after the compaction of the voltage.

Experimental results on uniaxial compressive strength and permeability coefficient Curing date Compressive strength (kg / ㎠) Permeability coefficient (cm / sec) Field Generated Soil Paraffin + Cement Paraffin + Cement One 3.73 15.56 3.66 x 10 ^-8 7 4.42 17.20 7.32 x 10 ^-9 14 4.37 16.33 4.78 x 10 ^-9 28 4.58 18.54 4.71 x 10 ^-9

※ Test conditions: 5% each of water-soluble paraffin A type / cement / lime lime / fly ash

※ Sample molding: 95% of γ _dmax (maximum density of dry state in compaction test) / 3% wet side of W _OMC (optimum moisture content ratio)

As described above, it is possible to exert sufficient strength and impermeability even by using only the hardener prepared by using cement and paraffin in the field-produced soil, but crushed waste tires containing elasticity and ductile components to protect the rigid properties of various pipelines Or it can be seen that the use of waste vinyl can prevent the breakage of the pipe, it is possible to adjust the addition ratio of the waste tire based on the water content and volume specific gravity, the difference in the elasticity of the tube protective layer according to the addition rate of the crushed waste tire It can be seen that it occurs, the best conditions were found to be used when added to about 30 to 50%.

Particularly, in the case of pipeline construction in the soft ground area, the construction cost was greatly increased by constructing foundation piles, but the soft ground improvement was improved by constructing 30 ~ 50cm of coarse clay in this method. It can be seen that the effect appears. It is well known that there is an existing soil cement method for soft ground improvement, and it is well known that it is used as a soft ground improvement method. It can be seen that it is a groundbreaking method of exerting solidification and inducing solidification of soil and cement or quicklime with crushed waste tires or waste vinyl to exert strength and improve impermeability.

As mentioned above, if the field-produced soil used for the backfilling of various pipelines is formed like this method, and the pipe protection layer and the filling layer are formed together, the initial investment and construction cost will be increased, but it will be damaged and damaged. Due to the maintenance cost and the inflow of unknown water such as underground leaching water, the inflow of sewage treatment plant is exceeded by 20 ~ 30%, which prevents enormous obstacles to the operation efficiency of the sewage treatment plant. Due to this, it is possible to solve the difficulties that there is no area to be enlarged, to reduce the cost of dealing with the excess capacity, and to operate and maintain by automation due to the stable inflow water quality in the long term. By laying it, it is possible to prevent settlement by the weight and load of the pipeline, so it has sufficient compensation effect. Can be confirmed that the tube protection layer and the filling layer composition method.

The present invention can be variously modified and can take various forms and only the specific embodiments thereof are described in the detailed description of the invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

As described above, according to the present invention, the treatment method of the sewage treatment plant is promoted through the above-described method, and the discharge of sewage is prevented due to the inflow of unknown water and the breakage and depression of the pipeline, thereby preventing the contamination of the groundwater and helping the generation. It will be able to protect the natural environment permanently.

In addition, the pipe protection layer and the filling layer composition exhibiting voltage compaction and high tension even when the pipe is crushed or damaged due to poor construction are not easily collapsed, so the need for dredging is prevented by preventing the sedimentation of soil in the pipe. The tube protection layer can be constructed with obvious gradients, thus eliminating the risk of backflow.

When the sewage treatment plant is installed on the ground, it is easy to monitor for accidents and abnormalities, and there are many trained personnel in terms of maintenance, whereas the underground pipelines are not easy to monitor and check. If this occurs, not only is difficult to find, but also the ability to cope with the situation is slow.

In addition, it is as important as the sewage treatment plant and takes about 40% of the project cost of its own sewage treatment plant. This construction requires considerable attention to laying sewer pipes.

The pipe protection layer and the filling layer of this method have almost no inflow of sediment into the pipeline even when the pipeline is broken or recessed due to high tension, and prevents the inflow of groundwater or unknown water to block the excess flow into the sewage treatment plant. Or it can reduce the dredging cycle every two to three years, which can save the budget, and by forming the ground protection layer, the foundation gives a constant slope of the bottom to facilitate the flow of sewage, so that the solids and sediments It is an excellent method for forming the tube protection layer and the filling layer that prevents the deposition phenomenon and reduces the odor emission due to the damaged sediment. In addition, it can be seen that various impediments are eliminated because the pipe filling layer is wrapped in each tube such as other perfusions (water supply, communication, gas, etc.) buried underground.

In addition, it is possible to prevent the sewage from infiltrating the soil due to sinking and breakage of the pipeline and contaminating the surrounding soil, which has become the main culprit of environmental pollution such as groundwater. It is clear that the layered sewage pipe is a very advantageous invention that can be extended with a more durable protection while maintaining the existing life span.

Claims (5)

In a method for protecting a buried pipe for various purposes, The bone 100 is made to a predetermined depth, the bottom portion 200 of the bone is formed with a tube protective layer 300 to protect the tube to be embedded 10-30 cm or more, the pipe (top) 400) and the connection between the ground, filling the space around the pipe to form a high-kilometer filling layer (500) 10 ~ 30cm or more, and filling the field-produced soil on the high-kilometer filling layer on-site soil filling layer 600 Forming, and finally forming a protective material or road layer 700, characterized in that configured to form a protective layer of buried pipe. The method according to claim 1, The kaolin is a method of forming a protective layer of various buried pipes, characterized in that the mixture after the addition of cement to the field-produced soil, the solidifying agent using a water-soluble paraffin in the mixed composition while uniformly spraying with a mechanical spray. The method according to claim 1, When the bottom part is in poor ground, general cement is added to the field-produced soil, and mixed with quicklime to stabilize the particles of soil, and then the solidification agent is sprayed to form a poor ground replacement layer so that it is necessary to perform additional ground improvement work. Method for forming a protective layer of the buried pipe characterized in that there is no. The method according to claim 1, The protective layer of the buried pipe, characterized in that the bottom portion to form a tube protective layer and a high-clay soil filling layer to impart a buffering effect by adding a lump crushed waste tire to the weight ratio of the site-to-earth weight when the bottom portion needs a smooth action and impact prevention Creation method. The method according to any one of claims 2 to 4, A method of forming a protective layer for buried pipes, characterized by controlling the ability of the impermeable power to be adjusted by adjusting the input amount of the solidifying agent added according to the weight ratio and the water content of the soil generated on-site.