JP3060274B2 - Sand shore erosion prevention device using wood material - Google Patents
Sand shore erosion prevention device using wood materialInfo
- Publication number
- JP3060274B2 JP3060274B2 JP6039002A JP3900294A JP3060274B2 JP 3060274 B2 JP3060274 B2 JP 3060274B2 JP 6039002 A JP6039002 A JP 6039002A JP 3900294 A JP3900294 A JP 3900294A JP 3060274 B2 JP3060274 B2 JP 3060274B2
- Authority
- JP
- Japan
- Prior art keywords
- sand
- wood material
- erosion prevention
- prevention device
- tower
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Revetment (AREA)
Description
【０００１】[0001]
【産業上の利用分野】 本発明は、我が国の木材素材を
活用して、海浜の流出する土砂を堆積させ、砂浜を造成
させる海岸侵食防止装置に係るもので、詳しくは木材素
材による砂抄海岸侵食防止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 a coastal erosion prevention device for depositing earth and sand flowing out of a beach and creating a sandy beach by utilizing a wood material of Japan. The present invention relates to an erosion prevention device.
【０００２】[0002]
【従来の技術】従来、この種の海岸侵食防止装置は、セ
メント及び鉄等によるコンクリート製品を活用したもの
で、汀線を境にして沖合装置と防止装置に分けられる。
沖合装置として、波の波力を減ずる消波堤及び海上に浮
上する離岸堤、陸側には、波返しの機能を持つ直立型の
擁壁、護岸及び緩傾斜護岸等が知られている。2. Description of the Related Art Conventionally, this type of coastal erosion prevention device utilizes a concrete product made of cement, iron, or the like, and is divided into an offshore device and an prevention device at a shoreline.
As offshore equipment, breakwaters that reduce the wave power of waves and breakwaters that float on the sea, and on the land side, upright retaining walls with wave-returning functions, seawalls, and gentle slope seawalls are known. .
【０００３】[0003]
【発明が解決しようとする課題】従来の技術は、海岸侵
食防止装置の素材として、セメント、鉄等によるコンク
リート製品が主体で、その構造物は堅く波浪の衝撃に弾
力性を欠き、近年においては、酸性雨による風化が懸念
されているところである。従来の技術で述べたもののう
ち、前者においては、装置の海上運搬、据付けによる経
済性、装置の海底への埋設に伴う被災、海上浮上による
景観上の問題点を有していた。In the prior art, concrete materials such as cement, iron, etc. are mainly used as a material for the shore erosion prevention device, and the structure is rigid and lacks elasticity against the impact of waves. However, weathering due to acid rain is a concern. Among the techniques described in the prior art, the former has problems of transporting and transporting the device at sea, economical effects of installation, damage caused by burying the device on the sea floor, and problems of landscape due to floating on the sea.
【０００４】また、後者においては、護岸前面の海浜や
海底の先掘を助長し、前浜の消失、施設の被災、土地有
効利用上の問題点を有していた。[0004] In the latter case, the excavation of the seashore and the seabed in front of the revetment is promoted, and there are problems in disappearance of the foreshore, damage to facilities, and effective use of land.
【０００５】本発明は、従来の技術の有するこのような
問題点に鑑みてなされたものでありその目的とするとこ
ろは、我が国に産する最大部材である木材素材とその伝
統的造作技術によって、波の波動運動を有効利用して砂
を堆積させ、海浜を創出する国土保全施設として、木材
素材による砂抄海岸侵食防止装置を提供するものであ
る。The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to provide a timber material, which is the largest member produced in Japan, and its traditional manufacturing technology. An object of the present invention is to provide a sand shore erosion prevention device made of a wood material as a national land conservation facility for creating a beach by effectively utilizing the wave motion of waves to deposit sand.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明における木材素材による砂抄海岸侵食防止装
置は、対向する一対の長大桁に、内方及び外方に向かう
傾斜した凹状の装着部を設けてなる長方形梯子台状の波
受台に、四角形状であって、内方に向かう凹状の装着部
を有する対向する一対の外枠に、一定間隔の空隙を設け
た複数の横木を装着させてなる簀の子状の砂抄枠を装着
させ、これらを支保するため、櫓状枠組した階段状の支
保柱先端部に固定してなる支保櫓台、この基礎部をそり
状の砂そり台に固定して構築するものである。In order to achieve the above-mentioned object, a sand shore erosion prevention device made of wood material according to the present invention is provided with a pair of long girders facing each other. On a rectangular ladder-shaped wave receiving table provided with a mounting portion, a plurality of rungs provided with a space at regular intervals in a pair of opposing outer frames having a rectangular and inwardly concave mounting portion. A support tower that is fixed to the tip of a stair-shaped support pillar with a tower-shaped frame to support them by attaching a sand-shaped sand frame that is made of sand and a sled-shaped sand sled. It is built on a table.
【０００７】上記装置の素材は、国内最大の部材で潮害
に強く、加工が容易で、波浪の衝撃に耐える枠組構造と
した金具を一切用いない木材素材のみによるものであ
る。[0007] The material of the above-mentioned device is the only member made of wood, which is the largest member in Japan, is resistant to tide damage, is easy to process, and does not use any metal fittings having a frame structure capable of withstanding the shock of waves.
【０００８】また、波受台の主桁は、波の受け易い角度
とし、砂抄枠の上端部が部材内に留まる部材の大きいも
のが好ましい。Further, it is preferable that the main girder of the wave receiving stand has an angle at which waves can be easily received, and a large member whose upper end portion of the sand-making frame stays in the member.
【０００９】また、砂抄枠の砂抄横木は、波の進行エネ
ルギーを消失させるよう小木片を埋込み一定間隔の空隙
を設けて簀の子状とし、海浜の土質の粒径によって空隙
隔間を変えることができる。[0009] The sand-shaft crossing of the sand-shaping frame is formed by embedding small pieces of wood so that the traveling energy of waves is buried therein, providing gaps at regular intervals to make the shape of a cage, and changing the gap between the gaps according to the grain size of the soil on the beach. Can be.
【００１０】また、支保櫓台の構造は、砂浜海岸での杭
打込の困難さを解消するよう施工箇所で簡単に組立てる
ことができる。In addition, the structure of the support tower can be easily assembled at a construction site so as to eliminate difficulty in driving a pile on a sandy beach.
【００１１】また、砂そり台は、潮の満干の影響を受け
る海浜で、装置の埋込み施工が容易にできるよう砂地を
滑らせることができる。Further, the sand sled can slide on the sandy land on the beach which is affected by the tide.
【００１２】[0012]
【作用】本発明の装置は、海岸の汀線にほぼ平行な潮の
満干の中間点に、波受台の長軸を汀線の垂直方向に、装
置の並列若しくは２基の装置の中間部に砂抄枠を装着す
る組合わせを基本として、５０ｍ以内程度の一定間隔に
直線的または千鳥状に配置して埋設させることにより固
定される。The device of the present invention is constructed such that sand is placed at the midpoint of the tide, almost parallel to the shoreline of the shore, with the long axis of the basin in the vertical direction of the shoreline, in parallel with the devices or in the middle of two devices On the basis of the combination in which the papermaking frames are mounted, they are fixed by being arranged linearly or in a staggered pattern at regular intervals of about 50 m or less and embedded.
【００１３】そして、装置の砂そり土台の各部所は、砂
の埋設に伴う土圧によって更に固定され、波浪の衝撃的
波力に耐える構造になる。[0013] Each part of the sand sled base of the apparatus is further fixed by the earth pressure accompanying the burying of the sand, and has a structure that can withstand the shocking wave force of the waves.
【００１４】また、新たな砂浜の形成に伴って、汀線が
沖合いに前進することにより、本装置を既設位置の前面
に設置することによって、更に海浜の造成ができる。[0014] In addition, with the formation of a new sandy beach, the shoreline advances offshore, and by installing the present apparatus in front of the existing position, it is possible to further construct a beach.
【実施例】実施例について図面を参照して説明する。An embodiment will be described with reference to the drawings.
【００１５】図１、３、４、５において、波受台（Ａ）
は、末口径２５ｃｍ、長さ６ｍ程度の丸太材を側面、下
面及び上部両端を角落しした長大桁（１）に、砂抄枠
（Ｂ）の装着部として幅２５ｃｍ、深さ８ｃｍの凹状の
溝を刻み、内側面に装着部（Ｅ１、Ｅ２、Ｅ３、Ｅ４）
及び外側面に装着部（Ｅ５、Ｅ６）下面に支保櫓台
（Ｃ）上部の装着部（Ｇ１、Ｇ２、Ｇ３、Ｇ４、Ｇ５、
Ｇ６）を設け、対向する長大桁（１）を一辺１５ｃｍ角
の波受台横木（２）３本を用いて梯子台状に固定する。In FIGS. 1, 3, 4, and 5, a wave receiving stand (A)
Is a large girder (1) with a bottom diameter of about 25 cm and a length of about 6 m, with the sides, bottom and upper edges cut off. Carve a groove and attach to the inner surface (E1, E2, E3, E4)
And mounting portions (G1, G2, G3, G4, G5,
G6) is provided, and the opposing long girders (1) are fixed in a ladder base shape using three wave receiving stand crossbars (2) each having a side of 15 cm square.
【００１６】図１、２、３、５において、砂抄枠（Ｂ）
は、一辺２５ｃｍ、長さ１．５ｍの角材を用いた外枠
（３）に、幅８ｃｍ、深さ８ｃｍ、長さ１．２ｍの凹状
の溝を刻んだ砂抄横木（４）の装着部（Ｆ１、Ｆ２）
に、径１２ｃｍ程度の小径木丸太材の両側面を角落しし
た複数の砂抄横木（４）の両端部を小木片（５）を用い
て一定間隔に固定し、四角形簀の子状の枠組とする。In FIGS. 1, 2, 3, and 5, the sand frame (B)
Is a mounting part of a sand harvesting crossbar (4) in which a concave groove of 8 cm wide, 8 cm deep and 1.2 m long is cut in an outer frame (3) using a square piece having a side of 25 cm and a length of 1.5 m. (F1, F2)
Then, the both ends of a plurality of small sand logs (4) obtained by cutting off both sides of a small-diameter wooden log material having a diameter of about 12 cm are fixed at regular intervals using small wood pieces (5) to form a quadrangular cage. .
【００１７】図１、３、４において、砂そり土台（Ｄ）
は、末口径２５ｃｍ、長さ５ｍ程度の丸太材を上、下面
及び先端下部を角落ししたそり桁（１０）を径１６ｃ
ｍ、長さ約３ｍの４本のそり横木（１１）で、そり状の
枠組として固定し、上部に支保櫓台（Ｃ）の装着部（Ｈ
１、Ｈ２、Ｈ３、Ｈ４、Ｈ５、Ｈ６）を設ける。In FIGS. 1, 3 and 4, a sand sled base (D)
Is a sled girder (10) whose upper, lower and lower ends are rounded with a round log with a diameter of about 25 cm and a length of about 5 m.
m, 4 sled crossbars (11) with a length of about 3 m, fixed as a sled-shaped framework, and a mounting section (H)
1, H2, H3, H4, H5, H6).
【００１８】図１、３、４、５において、支保櫓台
（Ｃ）は、径１８ｃｍ、長さ２．５ｍ〜３．２ｍの６本
の支保柱（６）を前項の砂そり土台の装着部（Ｇ）に据
付け、径１６ｃｍ、長さ１．９ｍの４本の通貫（７）、
長さ３ｍの６本の櫓横木（８）及び径１２ｃｍ、長さ
２．２ｍの４本の筋交（９）の丸太材を用いて、高さ
２．５ｍ〜３．２ｍ、幅３ｍ、長さ約４ｍの櫓状の枠組
みとして固定する。In FIGS. 1, 3, 4, and 5, the support tower (C) has six support pillars (6) having a diameter of 18 cm and a length of 2.5 m to 3.2 m, and is mounted on the sand sled base described in the preceding paragraph. Installed in the part (G), four penetrations (7) with a diameter of 16 cm and a length of 1.9 m,
2.5m-3.2m high, 3m wide, using 6 oar crossbars (8) with a length of 3m and four braces (9) with a diameter of 12cm and a length of 2.2m (9). It is fixed as a tower-shaped framework with a length of about 4m.
【００１９】装置設置箇所の陸地側において、先ず砂そ
り土台（Ｄ）に支保櫓台（Ｃ）の下部を連結させ、支保
櫓台（Ｃ）の支保柱（３）の先端部に波受台（Ａ）を堅
牢に固定した後、砂抄枠（Ｂ）を砂抄枠装着部（Ｅ１、
Ｅ２、Ｅ３、Ｅ４）に下方から挿し込んで固定する。On the land side of the installation site, first, the lower part of the support tower (C) is connected to the sand sled base (D), and the wave receiving stand is attached to the tip of the support pillar (3) of the support tower (C). After firmly fixing (A), the sand frame (B) is attached to the sand frame mounting portion (E1,
E2, E3, E4) from below and fix.
【００２０】次に、海浜の流出した設置箇所の満干の中
間点付近を、干潮時に幅１２ｍ、奥行１０ｍの長方形状
に深さ約２ｍ程度掘削し、前述した既設体を高さの低い
方を海側に向け、砂上を滑らせて設置する。Next, at the low tide, the vicinity of the middle point of the full flow at the location where the beach was spilled was excavated at a low tide into a rectangular shape having a width of 12 m and a depth of about 10 m at a depth of about 2 m. Sliding on the sand toward the sea side.
【００２１】装置の設置は、装置の並列及び２基の装置
の中間に砂抄枠（Ｂ）を波受台（Ａ）の砂抄枠装着部
（Ｅ５、Ｅ６）に固定して設置する二方法ができる。The apparatus is installed by fixing the sand frame (B) to the sand frame mounting portions (E5, E6) of the wave receiving stand (A) in the middle of the two apparatuses in parallel. The way can be.
【００２２】前項の装置を基本体として、基本体を汀線
に沿って５０ｍ以内程度の一定間隔に、直線的、千鳥状
に配置し、砂の堆積をさせることによって、海浜の造成
ができる。With the above-mentioned apparatus as a basic body, a beach can be formed by arranging the basic bodies linearly and staggered at regular intervals of about 50 m or less along the shoreline and depositing sand.
【発明の効果】本発明は、上述のとおり構成されている
ので、次の記載する効果を呈する。Since the present invention is configured as described above, it has the following effects.
【００２３】請求項１の木材素材による砂抄海岸侵食防
止装置は、素材が国内産で潮害にも強く、素材代価も経
済的で容易に購入でき、造作も簡単で短期に構築可能で
ありまた、外観も優れ、海浜の景観にも調和する。The sand shore erosion prevention device made of wood material according to claim 1 is made of a domestic material that is resistant to tide, is economical in price, can be easily purchased, and can be constructed easily and in a short time. In addition, the appearance is excellent, and it harmonizes with the beach scenery.
【００２４】請求項２の装置は、波受台の長大桁及び四
角形簀の子状の砂抄枠は緩傾斜して装着させてあるの
で、波の進行を受けやすく、波の抵抗を軽減し、暴風時
の超大波力においても破壊することがない。According to the second aspect of the present invention, since the long girder of the wave receiving table and the sand-like frame of the quadrangular cage are mounted at a gentle inclination, the apparatus is susceptible to the propagation of waves, the resistance of waves is reduced, and There is no destruction even at the time of super wave power.
【００２５】請求項３の装置は、四角形簀の子状の砂抄
枠の装着部に、複数の砂抄横木を小木片で固定すること
により一定間隔の空隙を設けて装着してあるので、波の
進行エネルギーを消失させ、砂を堆積させることがで
き、また、設置箇所の土質の粒径によって空隙間隔を容
易に変更できる。According to the third aspect of the present invention, since a plurality of sandpaper rungs are fixed with small pieces of wood to the mounting portion of the sand-shape frame of the quadrangular cage, the space is provided at regular intervals, so that the waves are removed. The traveling energy can be dissipated, sand can be deposited, and the air gap can be easily changed depending on the grain size of the soil at the installation location.
【００２６】請求項４の装置は、構造を櫓状に枠組みし
ており、透過性も大で波浪の超大波力に対応でき、砂の
堆積によりその構造は堅牢性を増加する。In the device according to the fourth aspect, the structure is framed in a tower shape, the permeability is large, the device can cope with the super-wave force of waves, and the structure is increased in rigidity due to accumulation of sand.
【００２７】請求項５の装置は、支保櫓台の下部を梯子
台状のそり土台に装着してあるので砂上を滑走すること
ができ、潮の満干の影響を受ける海浜での施工性に優れ
ている。[0027] Since the lower part of the support tower is mounted on a sled base in the form of a ladder, the apparatus according to claim 5 can slide on the sand, and is excellent in workability on the beach affected by the tide. ing.
【図１】木材素材による砂抄海岸侵食防止装置の側面図Fig. 1 Side view of a sand shore erosion prevention device made of wood material
【図２】砂抄枠（Ｂ）の要部斜視図FIG. 2 is a perspective view of a main part of a sand making frame (B).
【図３】波受台（Ａ）に砂抄枠（Ｂ）を装着させ、砂そ
り土台（Ｄ）に基礎部を固定した支保櫓台（Ｃ）に取り
付けてなる要部斜視図FIG. 3 is a perspective view of an essential part in which a sand frame (B) is attached to a wave receiving stand (A) and attached to a support tower (C) in which a foundation is fixed to a sand sled base (D).
【図４】支保櫓台（Ｃ）及び砂そり土台（Ｄ）の要部斜
視図FIG. 4 is a perspective view of a main part of a support tower (C) and a sand sled base (D).
【図５】木材素材による砂抄海岸侵食防止装置の施工平
面図Fig. 5 Construction plan of sand shore erosion prevention device using wood material
Ａ 波受台 １ 長大
桁 Ｂ 砂抄枠 ２ 波受
台横木 Ｃ 支保櫓台 ３ 外枠 Ｄ 砂そり土台 ４ 砂抄
横木 Ｅ 砂抄枠装着部 ５ 小木
片 Ｆ 砂抄横木装着部 ６ 支保
柱 Ｇ 支保櫓台上部装着部 ７ 通貫 Ｈ 支保櫓台下部装着部 ８ 櫓横
木 ９ 筋交 １０ そり桁 １１ そり横木 １２ 波受台継横木A Wave Cradle 1 Large Girder B Sand Frame 2 Wave Cage Cage C Support Tower 3 Outer Frame D Sand Sled Base 4 Sand Cave Crossing E Sand Grain Mounting Part 5 Small Wood Piece F Sand Grading Cross Section 6 Support Column G Support tower upper part mounting part 7 Through H Support tower tower lower mounting part 8 Oarokoro 9 Brace 10 Sledding girder 11 Sleigh yokogi 12 Wave receiving stand joint yokogi
Claims (5)
外方に向かう凹状の被装着部（Ｅ）を有する長方形梯子
台状に形成されてなる波受台（Ａ）に、内方に向かう凹
状の装着部（Ｆ）を有する対向する一対の外枠（２）
に、複数の砂抄横木（３）を一定間隔の空隙を設けて装
着させ、四角形簀の子状に形成されてなる砂抄枠（Ｂ）
を固定させ、これらを支保する櫓状の支保櫓台（Ｃ）及
び支保櫓台（Ｃ）を固定する梯子台状の砂そり土台
（Ｄ）により構成されてなる木材素材による砂抄海岸侵
食防止装置。1. A wave receiving table (A), which is formed in a rectangular ladder base shape having a concave mounting portion (E) directed inward and outward on a pair of opposing long girders (1), A pair of opposing outer frames (2) having a concave mounting portion (F) facing inward
, A plurality of sand-shaping crossbars (3) are installed with a predetermined interval provided therebetween, and a sand-shaping frame (B) formed in the shape of a square cage
And sand shore erosion prevention by a wood material composed of a tower-shaped support tower (C) for supporting them and a ladder-shaped sand sled base (D) for fixing the tower (C) apparatus.
に、緩傾斜に砂抄枠（Ｂ）を装着してなる請求項１記載
の木材素材による砂抄海岸侵食防止装置。2. A mounting portion (E) for a rectangular wave receiving table (A).
2. A sand shore erosion prevention device made of a wood material according to claim 1, wherein a sand-shaping frame (B) is mounted at a gentle inclination.
（Ｆ）に複数の砂抄横木（３）を一定間隔の空隙を設け
て装着してなる請求項１記載の木材素材による砂抄海岸
侵食防止装置。3. The wood material according to claim 1, wherein a plurality of sand-shaping crossbars (3) are mounted on the mounting portion (F) of the quadrilateral-shaped sand-shaping frame (B) with gaps provided at regular intervals. Sand shore erosion prevention device.
２、３記載の波受台（Ａ）、砂抄枠（Ｂ）を装着してな
る請求項１記載の木材素材による砂抄海岸侵食防止装
置。4. The method according to claim 1, wherein a tip of the support tower (C) is provided.
2. The sand shore erosion prevention device made of a wood material according to claim 1, wherein the wave receiving stand (A) and the sand frame (B) are mounted.
を梯子台状の砂そり土台（Ｄ）に装着してなる請求項１
記載の木材素材による砂抄海岸侵食防止装置5. The shoring tower (C) according to claim 4, wherein the base portion is mounted on a ladder-shaped sand sled base (D).
Sand shore erosion prevention device using the described wood material
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6039002A JP3060274B2 (en) | 1994-01-24 | 1994-01-24 | Sand shore erosion prevention device using wood material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6039002A JP3060274B2 (en) | 1994-01-24 | 1994-01-24 | Sand shore erosion prevention device using wood material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07207638A JPH07207638A (en) | 1995-08-08 |
| JP3060274B2 true JP3060274B2 (en) | 2000-07-10 |
Family
ID=12540923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6039002A Expired - Lifetime JP3060274B2 (en) | 1994-01-24 | 1994-01-24 | Sand shore erosion prevention device using wood material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3060274B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101253207B1 (en) * | 2011-05-17 | 2013-04-10 | 관동대학교산학협력단 | Artificial structures having soil erosion prevention and fish-reef |
| KR101949499B1 (en) | 2018-07-03 | 2019-02-18 | 주식회사 나라에너지 | Prevention apparatus for coastal erosion and lost sand |
-
1994
- 1994-01-24 JP JP6039002A patent/JP3060274B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07207638A (en) | 1995-08-08 |
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