JP2003082970A - Installation construction method of heat exchange into ground for retrieving shallow layer geothermal energy and hole drilling device thereof - Google Patents
Installation construction method of heat exchange into ground for retrieving shallow layer geothermal energy and hole drilling device thereofInfo
- Publication number
- JP2003082970A JP2003082970A JP2001279793A JP2001279793A JP2003082970A JP 2003082970 A JP2003082970 A JP 2003082970A JP 2001279793 A JP2001279793 A JP 2001279793A JP 2001279793 A JP2001279793 A JP 2001279793A JP 2003082970 A JP2003082970 A JP 2003082970A
- Authority
- JP
- Japan
- Prior art keywords
- hollow pipe
- ground
- hole
- heat exchanger
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
- F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T2010/50—Component parts, details or accessories
- F24T2010/53—Methods for installation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、比較的浅い層の地
熱を利用して一般住宅や集合住宅、ハウス農業等の冷暖
房や給湯、道路の融雪等を行う場合に、冷媒が循環する
熱交換器を地中に設置するための工法とその設置のため
の地盤穿孔装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heat exchange in which a refrigerant circulates when performing geothermal heating in a relatively shallow layer to perform heating and cooling, hot water supply, snow melting on roads, etc. in general houses, apartment houses, and house agriculture. The present invention relates to a construction method for installing a vessel in the ground and a ground drilling device for the installation.
【０００２】[0002]
【従来の技術】浅層の地熱は、地球上どの場所でも、地
下２ｍから１００ｍ程度の地盤で、約７℃から２１℃の
間で一定している。この地熱は無料かつ無限のエネルギ
ー（再生可能エネルギー）であり、熱を作り出すための
化学燃焼が不要であることから、地球温暖化の原因とな
る二酸化炭素や、その他の空気汚染物質も発生しないな
ど、多くの利点がある。2. Description of the Related Art Geothermal heat in a shallow layer is constant at a temperature of about 7 ° C to 21 ° C on the ground 2m to 100m underground anywhere on the earth. This geothermal energy is free and unlimited energy (renewable energy), and because it does not require chemical combustion to generate heat, it does not generate carbon dioxide or other air pollutants that cause global warming. , Has many advantages.
【０００３】ヒートポンプの熱源として浅層の地熱を利
用する場合、地盤を穿孔して熱交換器を地中に設置する
ことが必要となる。この場合、従来の施工法では、
（１）中空ロッド（鋼管）の先端に地盤を破砕、掘削す
るためのビットを装着し、これに押込み力を与えながら
ロッドを回転させる方法（ロータリー法）。
（２）ロッドを所定の高さから落下させて穿孔する方法
（パーカッション法）。
（３）上記２方法を併用したロータリー・パーカッショ
ン法。
などが採用されているが、これらはいずれも穿孔に時間
がかかり、コストも相当にかかってしまう。In the case of utilizing the shallow ground heat as the heat source of the heat pump, it is necessary to pierce the ground and install the heat exchanger in the ground. In this case, in the conventional construction method, (1) a method of mounting a bit for crushing and excavating the ground at the tip of a hollow rod (steel pipe) and rotating the rod while applying a pushing force to the bit (rotary method). (2) A method of dropping a rod from a predetermined height to perforate it (percussion method). (3) A rotary percussion method using the above two methods together. Etc. have been adopted, but all of them require a long time for perforation and also cost considerably.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、土質の種類
や物性に関係なく穿孔能率が良くて、短時間で穿孔で
き、低コストでヒートポンプ式空調システム等の熱交換
器を地中の所定深度まで設置することができる方法とそ
れに使用する施工装置を提案するものである。DISCLOSURE OF THE INVENTION The present invention has a high efficiency of piercing regardless of the type and physical properties of soil, enables piercing in a short time, and provides a heat exchanger such as a heat pump type air conditioning system at a predetermined cost in the ground. We propose a method that can be installed to a depth and a construction device used for it.
【０００５】[0005]
【発明を解決するための手段】本発明では、所定径（例
えば直径１０〜２０cm）の鋼管等の中空管を振動機（バ
イブロハンマー）と気水噴流（水噴流と空気噴流の同時
噴射）を利用して地中の所定深度（例えば２〜１００
ｍ）まで挿入し、これを引抜くことによってまず穿孔す
る。この方法によれば、１分間に２ｍ程度の穿孔が可能
であり、穿孔コストを５０００円／ｍ以下にすることも
できる。According to the present invention, a hollow pipe such as a steel pipe having a predetermined diameter (for example, a diameter of 10 to 20 cm) is provided with a vibrator (vibro hammer) and a steam jet (simultaneous injection of a water jet and an air jet). Using a certain depth in the ground (for example 2-100
First, perforate by inserting up to m) and pulling it out. According to this method, it is possible to perforate about 2 m per minute, and the perforation cost can be reduced to 5000 yen / m or less.
【０００６】この孔に冷媒が循環する管体である熱交換
器を入れ、所定の材料で埋め戻すことにより施工する。A heat exchanger, which is a pipe through which a refrigerant circulates, is placed in this hole, and the work is carried out by backfilling with a predetermined material.
【０００７】即ち、本発明は、頭部にバイブロハンマー
をまた下端に気水噴流噴射ノズルを備えた穿孔用の鋼管
等の中空管を用い、該中空管をバイブロハンマーによる
振動と気水噴流を併用して地中所定深度まで貫入し、次
いで該中空管内にベントナイト泥水を注入充填した後、
中空管を引き抜いて孔壁を保持し、次に該孔内にセメン
トミルクを注入すると共に下端がＵ字型に折り返された
管状の熱交換器を孔内下端まで挿入して固定する浅層地
熱エネルギー回収用熱交換器の地中への設置工法に関す
るものである。That is, according to the present invention, a hollow pipe such as a steel pipe for drilling having a vibro hammer at the head and a steam jet nozzle at the lower end is used, and the hollow pipe is vibrated by the vibro hammer and the steam Penetrate to a predetermined depth in the ground using a jet flow, and then inject and fill bentonite mud in the hollow pipe,
Shallow layer that pulls out the hollow tube to hold the hole wall, then injects cement milk into the hole and inserts and fixes a tubular heat exchanger whose bottom end is folded back in a U shape to the bottom end inside the hole. The present invention relates to a method of installing a heat exchanger for recovering geothermal energy in the ground.
【０００８】そして、上記中空管の地中への貫入に際し
ては、外周縁が中空管の外径よりも大きな下向き円錐形
をなすキャップを中空管下端に装着することにより、中
空管と周囲土壌との摩擦抵抗を低減することにより貫入
を更に容易とすることができ、該キャップは中空管引き
抜きの際に穿孔した孔下端に残置する。以下、本発明の
実施形態を図により説明する。When the hollow tube is penetrated into the ground, a cap having a downward conical shape whose outer peripheral edge is larger than the outer diameter of the hollow tube is attached to the lower end of the hollow tube. Penetration can be further facilitated by reducing the frictional resistance between the cap and the surrounding soil, and the cap is left at the lower end of the hole drilled when the hollow tube is pulled out. Hereinafter, embodiments of the present invention will be described with reference to the drawings.
【０００９】[0009]
【発明の実施の形態】図１は、本発明の工法を施工する
装置の一例を示すもので、１は穿孔のために地盤に挿入
する中空管（ケーシング）で、土質により直径１０〜２
０cm程度の鋼管や強化ポリエチレン管などが用いられ、
その頭部にはバイブロハンマーが設置されており、全体
をクレーン車等の吊り索３により吊持されている。ま
た、中空管１の下端外側には気水噴流（水噴流と空気噴
流を同時に噴射する）を噴射するノズル４が下向きに取
付けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of an apparatus for carrying out the construction method of the present invention, in which 1 is a hollow pipe (casing) which is inserted into the ground for drilling, and has a diameter of 10 to 2 depending on the soil quality.
0 cm steel pipe or reinforced polyethylene pipe is used,
A vibro hammer is installed on its head, and the whole is suspended by a suspension line 3 such as a crane truck. Further, a nozzle 4 for injecting a steam jet (which jets a water jet and an air jet at the same time) is attached downward to the outside of the lower end of the hollow tube 1.
【００１０】バイブロハンマー２から発生する振動に
は、上下振動のほか、円錐振動、ねじれ振動があるが、
通常は上下振動による。この上下振動の発生機構は、対
称な偶数軸に偏心重鍾を取付け、これを鉛直面に対称に
逆回転させることにより、水平方向の振動を消滅させ、
上下方向のみの振動を発生させるようにしたもので、こ
の場合の起振力（Ｆ）は、次のような式で与えられる。Vibrations generated from the vibro hammer 2 include conical vibration and torsional vibration in addition to vertical vibration.
Usually due to vertical vibration. This vertical vibration generation mechanism eliminates the horizontal vibration by attaching an eccentric weight to the symmetrical even-numbered shaft and rotating it in the reverse direction symmetrically with respect to the vertical plane.
The vibration is generated only in the vertical direction, and the exciting force (F) in this case is given by the following equation.
【００１１】Ｆ＝ｎＭｒｗ2 ｓｉｎθ ここに、ｎ：偏心重錘の数 Ｍ：偏心重錘の質量 ｒ：偏心重錘の重心の回転半径 ｗ2：回転角速度F = nMrw 2 sin θ Here, n: number of eccentric weights M: mass of eccentric weights r: radius of gyration of eccentric weights w 2 : rotational angular velocity
【００１２】従って、大きな起振力を得るためには、偏
心重鍾の重量、回転半径、回転角速度等を大きくするこ
とが必要となる。ただし、振動数８０００〜１００００
Ｃ／min.程度の比較的小さな起振力でも次に記述する気
水噴流との併用で、高能率で中空管１を地盤に貫入さ
せ、また引き抜くことが可能となる。Therefore, in order to obtain a large excitation force, it is necessary to increase the weight, the radius of gyration, the angular velocity of rotation, etc. of the eccentric weight. However, the frequency is 8000 to 10000
Even with a relatively small oscillating force of about C / min., It is possible to penetrate the hollow tube 1 into and out of the ground with high efficiency by using it together with the steam jet described below.
【００１３】前記気水噴流を噴射するノズル４先端は、
その中心から高圧水が、またその周囲に設けられた円環
状スリットから高圧の圧縮空気が噴射されるようになっ
ており、気水噴流発生装置としてはウォータージェット
発生用の超高圧ポンプ５、特に施工後の水処理を考え
て、小型で高圧・小流量のプランジャポンプ又はダイヤ
フラムポンプが用いられ、その圧力は５００Kg／cm2以
下、流量は１０〜４０ｌ／min.程度とし、土質の物性に
よって変えるようにする。また、圧縮空気を得るための
コンプレッサ６は、圧力３Kg／cm2以下、流量２ｍ3／mi
n.以下でよい。The tip of the nozzle 4 for injecting the steam jet is
High-pressure water is jetted from its center and high-pressure compressed air is jetted from an annular slit provided around it. As a steam jet generator, a super-high-pressure pump 5 for water jet generation, especially Considering the water treatment after construction, a compact, high-pressure, small-flow-rate plunger pump or diaphragm pump is used, the pressure is 500 Kg / cm 2 or less, and the flow rate is about 10-40 l / min. To do so. The compressor 6 for obtaining compressed air has a pressure of 3 kg / cm 2 or less and a flow rate of 2 m 3 / mi.
n.
【００１４】７は超高圧水用ポンプ５に水を送る給水タ
ンク、８はバイブロハンマー２の操作盤を示し、そのほ
か図示されていないが、Ｕ字管状熱交換器を孔中に固定
するためのセメントミルクを供給するスラリーポンプも
必要となり、このポンプは圧力５０Kg／cm2、流量１０
ｌ／min.程度とする。Reference numeral 7 denotes a water supply tank for sending water to the ultra-high pressure water pump 5, 8 denotes an operation panel of the vibro hammer 2, and other not shown, for fixing the U-shaped tubular heat exchanger in the hole. A slurry pump for supplying cement milk is also required, and this pump has a pressure of 50 kg / cm 2 and a flow rate of 10
1 / min.
【００１５】図２は、中空管１の先端部分を示すもの
で、９は先端に前記ノズル４を備える気水供給管で、前
記ポンプ５、６からの高圧の水と空気を流送する配管で
あり、この気水供給管は途中が中空管１内に配管される
ようにしてもよい。ノズル４は中空管１下端よりやや下
方にあって下向きに設けられる。１０は中空管１下端に
装着する金属製又は硬質樹脂製のキャップで、下向き円
錐形をなす全体傘形をしていて、その基部の軸部分を中
空管１の下端内に密に嵌入し得るようになっており、上
記円錐形の外周縁は中空管１の外径よりも大きく、その
一部を切欠１０ａして気水供給管９下端のノズル４を該
切欠部１０ａに固定する。FIG. 2 shows the distal end portion of the hollow tube 1, and 9 is a steam supply pipe having the nozzle 4 at the distal end, for sending high pressure water and air from the pumps 5 and 6. This is a pipe, and the steam supply pipe may be arranged in the hollow pipe 1 partway. The nozzle 4 is provided slightly below the lower end of the hollow tube 1 and faces downward. Reference numeral 10 denotes a metal or hard resin cap to be attached to the lower end of the hollow tube 1, which has a downwardly conical overall umbrella shape, and the shaft portion of its base is tightly fitted into the lower end of the hollow tube 1. The outer peripheral edge of the conical shape is larger than the outer diameter of the hollow tube 1, and a portion of the outer peripheral edge is cut out 10a to fix the nozzle 4 at the lower end of the water / water supply pipe 9 to the cutout 10a. To do.
【００１６】上記キャップ１０を中空管１先端部に装着
することにより、中空管１周辺にかかる土壌との摩擦を
小さくすることができるので、貫入抵抗が小さくなり、
穿孔能率が向上する。また、中空管１を地盤から引き抜
いたときには、このキャップ１０は孔下端に残置するこ
とになる。By attaching the cap 10 to the tip of the hollow tube 1, the friction with the soil around the hollow tube 1 can be reduced, so that the penetration resistance is reduced.
Drilling efficiency is improved. Further, when the hollow pipe 1 is pulled out from the ground, the cap 10 is left at the lower end of the hole.
【００１７】次に、本発明の工法の一例を図３以下で説
明する。
（１）まず、バイブロハンマー２、その操作盤８、気水
ジェットを発生させるための高圧ポンプ５、６、地盤に
打込む鋼管等の中空管１などの所定の機材を所定の場所
に設置する。図３は、バイブロハンマー２を設置した中
空管１がクレーン車のクレーンに吊持された状態を示し
ている。Next, an example of the construction method of the present invention will be described with reference to FIG. (1) First of all, a predetermined equipment such as a vibro hammer 2, its operation panel 8, high-pressure pumps 5 and 6 for generating a steam jet, and a hollow pipe 1 such as a steel pipe driven into the ground are installed in a predetermined place. To do. FIG. 3 shows a state in which the hollow pipe 1 provided with the vibro hammer 2 is suspended by a crane of a mobile crane.
【００１８】（２）次に、穿孔用の中空管１先端に前記
コーン型キャップ１０を取付け、先端ノズル４から気水
噴流を噴射しながらバイブロハンマー２を作動させて、
中空管１を地下所定深度まで打込む（図４参照）。(2) Next, the cone type cap 10 is attached to the tip of the hollow tube 1 for perforation, and the vibro hammer 2 is operated while jetting a steam jet from the tip nozzle 4,
The hollow pipe 1 is driven to a predetermined underground depth (see FIG. 4).
【００１９】（３）次に、バイブロハンマー２と中空管
１のジョイント部を離し、バイブロハンマー２だけを吊
り上げ、土中に残した中空管１内にベントナイト泥水１
１あるいは粘土水、ポリマー泥水等のゲル状材料を注入
充填する（図５）。これは、後に中空管１を引抜いたと
きに、孔壁の崩壊を防ぐためである。(3) Next, the joint portion between the vibro hammer 2 and the hollow pipe 1 is separated, only the vibro hammer 2 is lifted, and the bentonite muddy water 1 is placed in the hollow pipe 1 left in the soil.
1 or a gel-like material such as clay water or polymer mud water is injected and filled (FIG. 5). This is to prevent collapse of the hole wall when the hollow tube 1 is pulled out later.
【００２０】（４）次いで、再びバイブロハンマー２を
中空管１頭部にジョイントし、バイブロハンマーを逆作
動させて中空管を引き抜く（図６）。(4) Next, the vibro hammer 2 is again joined to the head of the hollow tube 1 and the vibro hammer is reversely operated to pull out the hollow tube (FIG. 6).
【００２１】（５）そして、ベントナイト泥水１１が充
填されている孔にセメントミルク１２を注入しながら攪
拌し、この孔に下端がＵ字型に折り返されているアルミ
管、ポリエチレン管等の管状の熱交換器１３を孔下端部
まで挿入し、固化させて固定する（図７）。なお、熱交
換器１３としては、図７のようなシングルＵ字管型のほ
か、ダブルＵ字管型あるいは単なる同軸型（コアキシャ
ル型）など、いろいろなタイプがあり、穿孔の大きさや
熱効率等に応じて最適なタイプを選択することになる
が、シングルＵ字管型のものが最も一般的である。(5) Then, the cement milk 12 is injected into the hole filled with the bentonite mud water 11 and stirred, and a tubular pipe such as an aluminum pipe or a polyethylene pipe whose lower end is folded back in a U-shape is formed. The heat exchanger 13 is inserted to the lower end of the hole, solidified and fixed (FIG. 7). As the heat exchanger 13, there are various types such as a single U-shaped tube type as shown in FIG. 7, a double U-shaped tube type or a simple coaxial type (coaxial type). The optimum type is selected depending on the type, but the single U-shaped type is the most common.
【００２２】このようにして地中所定深度に挿入固定さ
れた熱交換器１３には、フロンやプロピレングリコール
水溶液等の不凍性の冷媒が封入されており、管状の熱交
換器１３全体が閉回路を構成され、冷媒はポンプ１４に
より閉回路内を循環する。In this way, the heat exchanger 13 inserted and fixed at a predetermined depth in the ground is filled with an antifreezing refrigerant such as CFC or propylene glycol aqueous solution, and the tubular heat exchanger 13 is entirely closed. A circuit is formed, and the refrigerant circulates in the closed circuit by the pump 14.
【００２３】地上に出ている熱交換器１３の一部はヒー
トポンプ１５に組み込まれ、熱源として用いられて、冷
暖房（図８参照）や給湯、融雪等に利用される。熱交換
器１３を介して浅層の地熱から得られる温度は比較的低
温ではあるが、これをヒートポンプの熱源として用いる
ことにより、多方面で利用可能な高温のエネルギーに変
換することができるのである。A part of the heat exchanger 13 on the ground is incorporated in the heat pump 15 and is used as a heat source for cooling and heating (see FIG. 8), hot water supply, snow melting and the like. Although the temperature obtained from the geothermal heat of the shallow layer via the heat exchanger 13 is relatively low, by using this as a heat source of the heat pump, it can be converted into high-temperature energy that can be used in various fields. .
【００２４】[0024]
【発明の効果】本発明は上述のようにしてなり、次のよ
うな効果を有する。
(1) 中空管の地盤への貫入に際して、バイブロハンマー
と気水噴流（水噴流と空気噴流の同時噴射）を併用する
ので、土質の種類や物性の差異に関係なく迅速に貫入及
び引き抜きができて、熱交換器挿入孔を高能率で築造す
ることができる。例えば、１分間で２ｍ貫入でき、人間
の頭大の砂礫層や一軸圧縮強度が２ＭＰａ程度の軟岩層
でも、通常の地盤と同じ掘削速度で穿孔できる。As described above, the present invention has the following effects. (1) When the hollow pipe penetrates into the ground, a vibro hammer and a steam jet (simultaneous jet of water jet and air jet) are used together, so that the penetration and extraction can be performed quickly regardless of the difference in soil type and physical properties. As a result, the heat exchanger insertion hole can be constructed with high efficiency. For example, 2 m can be penetrated in 1 minute, and even a human-sized gravel layer or a soft rock layer having a uniaxial compressive strength of about 2 MPa can be drilled at the same excavation speed as the normal ground.
【００２５】特に、中空管下端にコーン型キャップを装
着することにより、中空管と周囲土壌との摩擦抵抗を大
幅に低減できるので、例えば直径１５cmの孔を５０ｍ穿
孔するのに、３０分間程度で済む。In particular, by mounting a cone type cap on the lower end of the hollow tube, the frictional resistance between the hollow tube and the surrounding soil can be significantly reduced. For example, a hole having a diameter of 15 cm can be drilled for 50 m for 30 minutes. It is enough.
【００２６】(2) 地盤への貫入に気水噴流を使用し、中
空管の回転や落下（パーカッション）によらないので、
中空管は薄肉の鋼管や強化ポリエチレン管が使用できて
経済的であり、バイブロハンマーから発生する振動や騒
音も、国土交通省や都道府県で定めている規制値の範囲
内で施工できる。(2) Since a steam jet is used for penetration into the ground and does not depend on rotation or drop (percussion) of the hollow pipe,
The hollow pipe is economical because thin steel pipes and reinforced polyethylene pipes can be used, and vibration and noise generated from the vibro hammer can also be installed within the range of regulations set by the Ministry of Land, Infrastructure, Transport and Tourism and prefectures.
【００２７】(3) 貫入後の中空管内にゲル状のベントナ
イト泥水を充填するので、砂層や礫層のような崩壊性の
地盤で施工する場合、中空管を引抜いても、孔壁が崩壊
するようなことがない。(3) Since gel-like bentonite muddy water is filled into the hollow pipe after penetration, when constructing on a collapsible ground such as a sand layer or a gravel layer, even if the hollow pipe is pulled out, the hole wall collapses. There is nothing to do.
【００２８】なお、ベントナイト泥水の代わりに、通常
の水を使用し、穿孔した孔に下方を嵌入した地上１〜２
ｍ程度の高さのスタンドパイプを立て、静水圧の水頭を
高くとるようにして、孔壁にかかる静水圧を大きくする
ことにより、孔壁の安定を図ることもできる。Ordinary water is used instead of bentonite muddy water, and 1-2 above the ground where the lower part is fitted into the perforated hole.
It is also possible to stabilize the hole wall by erecting a stand pipe having a height of about m and increasing the hydrostatic head to increase the hydrostatic pressure applied to the hole wall.
【００２９】(4) 穿孔した孔内に挿入した熱交換器を地
上のヒートポンプと結ぶことにより、戸建住宅や集合住
宅、ハウス農業の冷暖房、給湯、道路の融雪など、回収
した地熱による利用分野は広い。(4) By connecting the heat exchanger inserted in the perforated hole to a heat pump on the ground, it can be used by collected geothermal heat such as heating and cooling of detached houses and apartments, greenhouses for water supply, snow melting on roads, etc. Is wide.
【図１】本発明の工法を施工する装置全体の説明図であ
る。FIG. 1 is an explanatory diagram of an entire apparatus for applying a construction method of the present invention.
【図２】地盤へ貫入する中空管の先端部分の説明図であ
る。FIG. 2 is an explanatory diagram of a tip end portion of a hollow pipe that penetrates into the ground.
【図３】本発明工法による施工の一過程を示す説明図で
ある。FIG. 3 is an explanatory diagram showing a process of construction by the method of the present invention.
【図４】本発明工法による施工の一過程を示す説明図で
ある。FIG. 4 is an explanatory view showing a process of construction by the method of the present invention.
【図５】本発明工法による施工の一過程を示す説明図で
ある。FIG. 5 is an explanatory view showing a process of construction by the method of the present invention.
【図６】本発明工法による施工の一過程を示す説明図で
ある。FIG. 6 is an explanatory view showing a process of construction by the method of the present invention.
【図７】本発明工法による施工の一過程を示す説明図で
ある。FIG. 7 is an explanatory diagram showing a process of construction by the method of the present invention.
【図８】本発明工法により地中に設置した熱交換器を利
用して暖冷房を行う場合（図は暖房）の空調システムの
説明図である。FIG. 8 is an explanatory diagram of an air conditioning system in the case of performing heating / cooling using a heat exchanger installed in the ground by the method of the present invention (heating is shown).
１−中空管 ２−バイブロハンマー ３−吊り索 ４−気水噴流噴射ノズル ５−超高圧ポンプ ６−コンプレッサ ７−超高圧水用ポンプ ８−操作盤 ９−気水供給管 １０−先端キャップ １１−ベントナイト泥水 １２−セメントミルク １３−Ｕ字型熱交換器 １４−循環ポンプ １５−ヒートポンプ １６−暖冷房用室内ユニット 1-hollow tube 2-vibro hammer 3-hanging rope 4-Air-water jet injection nozzle 5-Ultra high pressure pump 6-compressor 7- Pump for ultra high pressure water 8-Operation panel 9-Air / water supply pipe 10-tip cap 11-Bentonite muddy water 12-cement milk 13-U-shaped heat exchanger 14-circulation pump 15-heat pump 16- Indoor unit for heating and cooling
Claims (3)
水噴流噴射ノズルを備えた穿孔用の鋼管等の中空管を用
い、該中空管をバイブロハンマーによる振動と気水噴流
を併用して地中所定深度まで貫入し、次いで該中空管内
にベントナイト泥水を注入充填した後、中空管を引き抜
いて孔壁を保持し、次に該孔内にセメントミルクを注入
すると共に下端がＵ字型に折り返された管状の熱交換器
を孔内下端まで挿入して固定することを特徴とする浅層
地熱エネルギー回収用熱交換器の地中への設置工法。1. A hollow pipe such as a steel pipe for perforation having a vibro hammer at the head and a steam jet nozzle at the lower end is used, and the hollow pipe is used together with vibration by the vibro hammer and steam jet. The hollow pipe to a predetermined depth, then inject and fill the hollow pipe with bentonite muddy water, and then pull out the hollow pipe to hold the hole wall, then inject cement milk into the hole and lower the U-shape. A method of installing a heat exchanger for shallow geothermal energy recovery in the ground, characterized by inserting and fixing a tubular heat exchanger folded back into a mold to the lower end of the hole.
外周縁が中空管の外径よりも大きな下向き円錐形をなす
キャップを中空管下端に装着して中空管と周囲土壌との
摩擦抵抗を低減することにより貫入を容易とし、該キャ
ップは中空管引き抜きの際に穿孔した孔下端に残置する
ようにした請求項１記載の浅層地熱エネルギー回収用熱
交換器の地中への設置工法。2. When the hollow pipe penetrates into the ground,
By attaching a downward conical cap whose outer peripheral edge is larger than the outer diameter of the hollow pipe to the lower end of the hollow pipe to reduce frictional resistance between the hollow pipe and surrounding soil, facilitating penetration, and the cap is The method for installing a heat exchanger for recovering shallow geothermal energy in the ground according to claim 1, wherein the hollow tube is left at the lower end of the hole when the hollow tube is pulled out.
水噴流噴射ノズルを備えた穿孔用の鋼管等の中空管の下
端に外周縁が中空管の外径よりも大きな下向き円錐形を
なすキャップを該中空管の地中貫入の際に装着してなる
ことを特徴とする浅層地熱エネルギー回収用熱交換器設
置用穿孔装置。3. A downward conical shape whose outer peripheral edge is larger than the outer diameter of the hollow pipe at the lower end of a hollow pipe such as a steel pipe for drilling having a vibro hammer on the head and a steam jet nozzle at the lower end. A perforating apparatus for installing a heat exchanger for shallow geothermal energy recovery, characterized in that an eggplant cap is attached when the hollow tube penetrates underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001279793A JP2003082970A (en) | 2001-09-14 | 2001-09-14 | Installation construction method of heat exchange into ground for retrieving shallow layer geothermal energy and hole drilling device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001279793A JP2003082970A (en) | 2001-09-14 | 2001-09-14 | Installation construction method of heat exchange into ground for retrieving shallow layer geothermal energy and hole drilling device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003082970A true JP2003082970A (en) | 2003-03-19 |
Family
ID=19103904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001279793A Pending JP2003082970A (en) | 2001-09-14 | 2001-09-14 | Installation construction method of heat exchange into ground for retrieving shallow layer geothermal energy and hole drilling device thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003082970A (en) |
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|---|---|---|---|---|
| JP2004316828A (en) * | 2003-04-18 | 2004-11-11 | Taiheiyo Cement Corp | Underground buried pipe |
| EP1705294A1 (en) * | 2005-03-22 | 2006-09-27 | Roxbury Limited | Method and apparatus for introducing elongate members into the ground |
| JP2007023577A (en) * | 2005-07-14 | 2007-02-01 | Karuto Kk | Excavating method for soil and method for burying pipe for purification in dug hole |
| KR100873566B1 (en) | 2007-08-14 | 2008-12-12 | 차재선 | Geothermal exchanger installing by penetrating rig and its construction method |
| JP2009162019A (en) * | 2008-01-09 | 2009-07-23 | Tohoku Electric Power Co Inc | Burying construction method and burying construction apparatus for elongated workpiece |
| CN102002949A (en) * | 2010-11-16 | 2011-04-06 | 江苏科技大学 | Pipe burying device and method for ground source heat pump |
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| JP2012172937A (en) * | 2011-02-23 | 2012-09-10 | Chiyoda Kako Kensetsu Kk | Construction method of pipe for heat extraction |
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| JP2015530557A (en) * | 2012-09-21 | 2015-10-15 | 天津市格瑞思機電新技術有限公司Ｔｉａｎｊｉｎ Ｇｅｒｕｉｓｉ Ｎｅｗ Ｔｅｃｈｎｏｌｏｇｙ Ｏｆ Ｍｅｃｈａｎｉｃａｌ Ａｎｄ Ｅｌｅｃｔｒｉｃａｌ Ｃｏ．Ｌｔｄ | Regional geothermal heat pump and public water supply network system for middle water |
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| EP1705294A1 (en) * | 2005-03-22 | 2006-09-27 | Roxbury Limited | Method and apparatus for introducing elongate members into the ground |
| JP2007023577A (en) * | 2005-07-14 | 2007-02-01 | Karuto Kk | Excavating method for soil and method for burying pipe for purification in dug hole |
| KR100873566B1 (en) | 2007-08-14 | 2008-12-12 | 차재선 | Geothermal exchanger installing by penetrating rig and its construction method |
| JP2009162019A (en) * | 2008-01-09 | 2009-07-23 | Tohoku Electric Power Co Inc | Burying construction method and burying construction apparatus for elongated workpiece |
| WO2011126359A3 (en) * | 2010-04-06 | 2011-12-15 | Geothex Holding B.V. | Method for introducing an elongated element, in particular geo-thermal heat exchanger, into the soil |
| NL1037890C2 (en) * | 2010-04-06 | 2011-10-13 | Demar Heiwerken B V | METHOD FOR INSERTING A LONG-TERM ELEMENT INTO A BOTTOM |
| JP2012057824A (en) * | 2010-09-06 | 2012-03-22 | Kume Sekkei:Kk | Heat exchange pile and installation method thereof |
| CN102002949A (en) * | 2010-11-16 | 2011-04-06 | 江苏科技大学 | Pipe burying device and method for ground source heat pump |
| JP2012172937A (en) * | 2011-02-23 | 2012-09-10 | Chiyoda Kako Kensetsu Kk | Construction method of pipe for heat extraction |
| JP2012255633A (en) * | 2011-06-10 | 2012-12-27 | Asahi Kasei Homes Co | Heat transfer filling material, underground heat exchange device, and filling method of heat transfer filling material |
| JP2012255632A (en) * | 2011-06-10 | 2012-12-27 | Asahi Kasei Homes Co | Heat transfer packing material, and geothermal heat exchanging apparatus |
| JP2015530557A (en) * | 2012-09-21 | 2015-10-15 | 天津市格瑞思機電新技術有限公司Ｔｉａｎｊｉｎ Ｇｅｒｕｉｓｉ Ｎｅｗ Ｔｅｃｈｎｏｌｏｇｙ Ｏｆ Ｍｅｃｈａｎｉｃａｌ Ａｎｄ Ｅｌｅｃｔｒｉｃａｌ Ｃｏ．Ｌｔｄ | Regional geothermal heat pump and public water supply network system for middle water |
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