JPH0436968B2 - - Google Patents
Info
- Publication number
- JPH0436968B2 JPH0436968B2 JP61136450A JP13645086A JPH0436968B2 JP H0436968 B2 JPH0436968 B2 JP H0436968B2 JP 61136450 A JP61136450 A JP 61136450A JP 13645086 A JP13645086 A JP 13645086A JP H0436968 B2 JPH0436968 B2 JP H0436968B2
- Authority
- JP
- Japan
- Prior art keywords
- cliff
- open
- storage facility
- waste
- waterproof sheet
- 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
- 239000002699 waste material Substances 0.000 claims description 29
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 23
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Processing Of Solid Wastes (AREA)
Description
[産業上の利用分野]
本発明は廃棄物を投棄することができる新規な
人工貯蔵施設に関するものである。更に詳しく述
べれば本発明は内周面の少なくとも2面が断崖面
となつており、残余面が開放面となつている断崖
絶壁に構築して成る人工貯蔵施設に関するもので
ある。
[従来の技術]
人工貯蔵施設は廃棄物の投棄施設として利用さ
れているが、最近では環境問題の点からその設置
場所の探索が難航を極めている。
このような点から最近注目されるようになつて
きたのが人里離れた断崖絶壁の場所、例えば高い
山の石切り場跡地、粘土採取跡地或いは絶壁海岸
等である。即ち、このような断崖絶壁の場所は内
面の2〜3面側が断崖面となつていることから、
工事するのは開放面のみである。しかもその開放
面の工事も簡単な土留工事で済むことから、廃棄
物を投棄開始するまでの工事期間を大幅に短縮で
きると共にその建設費を大幅に低減できるという
メリツトがある。
従来、このような断崖絶壁に用いられる人口貯
蔵施設としては、土堰提工貯蔵施設とコンクリー
ト外壁貯蔵施設とがあつた。
第2図は土堰提工貯蔵施設へ廃棄物を廃棄した
例を示したものである。
第2図の土堰提工貯蔵施設は、3面側が断崖面
1となつており、残りの1面側が開放面となつて
いる。
この第2図の土堰提工貯蔵施設ではまず3面側
の断崖面1から底面にかけて防水シート2を施工
する。
次に、土堰提工貯蔵施設の上方の高台から廃棄
物を投棄し、ある高さになつたら開放面側に土留
用の盛土4をし、その廃棄物3と土留用の盛土4
を覆うように防水シート2を施工する。
以下、同様にしてこれらの操作を繰り返すよう
になつている。
しかしこの方法では廃棄物の投棄量に応じて土
留用の盛土4を積み上げていくことができるが、
盛土4の安息角を保つために上方に行く程貯蔵容
量が少なくなるという欠点があり、しかも土留用
の盛土4は機械的強度が弱いので大雨等が降つた
ときには崩壊して公害問題を誘発する懸念があつ
た。
そこでこのような第2図の土堰提工貯蔵施設の
欠点を改善するため、開放面側にコンクリート壁
5を構築したコンクリート外壁貯蔵施設が実用さ
れている。
しかしこの方法では広大な人口貯蔵施設の開放
面側に強度が強く、高さが高く、その上長尺のコ
ンクリート壁5を施工することとなるから、投棄
開始までの工事期間が長期にわたると共に工事費
が大幅に高騰するという難点がある。
[発明が解決しようとする課題]
本発明はかかる点に立つて為されたものであつ
て、その目的とするところは内周面の少なくとも
2面が断崖面となつており、残余面が開放面とな
つている断崖絶壁の場所に短期間に建設でき且つ
公害発生を効果的に抑止できしかも投棄容量を顕
著に増大することができる人工貯蔵施設を提供す
ることにある。
[課題を解決するための手段]
本発明の要旨とするところは、内周面の少なく
とも2面が断崖面となつており、残余面が開放面
となつている断崖絶壁に構築して成る人工貯蔵施
設において、その底面は開放面側が小高くなるよ
うに傾斜をつけて掘削してあると共にその開放面
側の先端部には基礎コンクリート台が埋設してあ
り且つ基礎コンクリート台上には断崖絶壁側に若
干傾斜するように複数段の井桁部材が構築されて
おり、しかも底面上には断崖面側から開放面側に
かけて基礎コンクリート台を突き抜けるように防
水シートが敷設されており、そして底面敷設防水
シート上には廃棄物を複数枚の区分用防水シート
を介して複数層に区分投棄されるようになつてお
り、しかも区分用防水シートの開放面側は井桁部
材の内面側に折り曲げられ且つ内面側に立ち上が
るように密着施工されていることを特徴とする人
工貯蔵施設にある。
[作用]
本発明の人工貯蔵施設は、第1に内周面の少な
くとも2面が断崖面となつており且つその残余面
が開放面となつている断崖絶壁に人口貯蔵施設を
構築することにより、立地難の解消、投棄開始す
るまでの工事期間の短縮及び工事費を大幅に低減
し、
第2にその底面を開放面側が小高くなるように
傾斜をつけて掘削すると共にその開放面側の先端
部に基礎コンクリート台が埋設してあり且つその
基礎コンクリート台上に断崖絶壁側に若干傾斜す
るように複数段の井桁部材が構築されており、し
かも底面上には断崖面側から開放面側にかけて基
礎コンクリート台を突き抜けるように防水シート
を敷設することにより、投棄した廃棄物から流出
する液状漏洩物の地面及び開放面側への漏洩を完
全に抑止し、
第3に底面敷設防水シート上に廃棄物を複数枚
の区分用防水シートを介して複数層に区分投棄さ
れるようになつており、しかもそれぞれの区分用
防水シートの開放面側は井桁部材の内面側に折り
曲げられ且つ内面側に立ち上がるように密着施工
することにより、人工貯蔵施設が完全に完成する
のを待たずに簡単な底面への防水シートの敷設工
事終了後から廃棄物を投棄でき且つ投棄された廃
棄物は層区分により安定的に貯蔵でき、その結果
廃棄物から発生する悪臭物及び液状漏洩物の発生
を効果的に抑止し、しかも大雨等があつても投棄
廃棄物が山崩れすることなく貯蔵容量を顕著に増
大することができる。
[実施例]
次に、本発明の人工貯蔵施設の一実施例を図面
により説明する。
第1図は本発明の人工貯蔵施設の一実施例を示
した一部省略縦断面説明図である。
図示はしていないが第1図に向かつて左側、手
前側及び向う側の3面は断崖面1となつており、
また第1図に向かつて右側は開放面となつてい
る。
第1図において底面は開放面側が小高くなるよ
うに傾斜をつけて掘削されており、その開放面側
の先端部には井桁部材を構築できる基礎コンクリ
ート台6が若干傾斜するように埋設され、そして
その基礎コンクリート台6上に第1次の複数段の
井桁部材20が構築されている。また、その底面
には廃棄物から流出する液状物が地面に漏洩しな
いように防水シート2が開放面側に突き抜けるよ
うに施工されている。
廃棄物3の投棄作業はこのような状態となつた
人口貯蔵施設で開始することができる。
まず、このような状態となつた人口貯蔵施設の
断崖面1の上方の高台に、廃棄物3を積載したト
ラツクが近付き、第1次の廃棄物3を投棄する。
そしてその第1次廃棄物3が適当な高さとなつた
らその第1次廃棄物3を完全に覆うように第1次
の区分用防水シート2を断崖面1側から開放面側
にかけて施工する。この際第1次区分用防水シー
ト2の開放面側の先端部は第1次複数段井桁部材
20に突き当たつた箇所で内周面側に折り曲げら
れ且つその内周面に密着するように施工される。
それから開放面側に埋設してある基礎コンクリ
ート台6上に第2次の複数段の井桁部材20を構
築する。
次に、その第1次区分用防水シート2の上層
に、同様に断崖面1の上方にある高台から第2次
の廃棄物3を投棄して行き、その第2次廃棄物3
が第2次複数段井桁部材20の高さとなつたら第
2次区分用防水シート2を断崖面1側から開放面
側にかけてその第2次廃棄物3を完全に覆うよう
に施工する。この際第2次区分用防水シート2の
開放面側は第2次複数段井桁部材20に突き当た
つた箇所で内周面側に折り曲げられ且つその内周
面に密着するように施工される。それから開放面
側の第2次複数段井桁部材20の上に第3次の複
数段の井桁部材20を増築する。
以下、同様にして、
断崖面1の上方の高台からの新たな廃棄物3
の投棄、
その新たな投棄廃棄物3上への新たな区分用
防水シート2の施工、
既存複数段井桁部材20上への新たな複数段
井桁部材20の増築
の作業を繰り返すようにする。
このような作業を繰り返すことにより投棄作業
が完了し、第1図のような人工貯蔵施設ができあ
がる。
従つて本発明の人口貯蔵施設は投棄可能になる
までの建設期間が短く且つ建設費が安価でしかも
投棄容量が顕著に大きくなる。
次表は、従来の土堰提工貯蔵施設の投棄容量、
投棄開始までの工事期間、工事費をそれぞれ100
%としたときにおける従来のコンクリート外壁貯
蔵施設及び本発明の人工貯蔵施設の投棄容量、投
棄開始までの工事期間、工事費をそれぞれ比較値
で示したものである。
なお、この表では比較値(%)で示したが、実
際には投棄容量の単位はm3、投棄開始までの工事
期間は日数、工事費は円がそれぞれ用いられてい
る。
[Industrial Field of Application] The present invention relates to a new artificial storage facility in which waste can be dumped. More specifically, the present invention relates to an artificial storage facility built on a cliff, with at least two inner circumferential surfaces being cliff faces and the remaining surface being open. [Prior Art] Artificial storage facilities are used as waste dumping facilities, but recently it has become extremely difficult to find a place to install them due to environmental issues. From this point of view, places that have recently been attracting attention are remote cliffs, such as stone quarry sites in high mountains, clay extraction sites, and cliff coasts. In other words, in places with steep cliffs like this, two or three of the inner surfaces are cliff faces, so
Only the open side will be constructed. Moreover, since the work on the open surface can be done by simple earth retaining work, there are advantages in that the construction period until the start of waste dumping can be significantly shortened and the construction cost can be reduced significantly. Conventionally, population storage facilities used on such cliffs include earth weir storage facilities and concrete external wall storage facilities. Figure 2 shows an example of waste being disposed of in an earth weir storage facility. The earth weir storage facility shown in Figure 2 has cliff faces 1 on three sides and an open surface on the remaining one side. In the earth weir construction storage facility shown in Figure 2, a waterproof sheet 2 is first constructed from the cliff surface 1 on the third side to the bottom surface. Next, the waste is dumped from the hill above the earth weir storage facility, and when it reaches a certain height, an embankment 4 for earth retention is placed on the open side, and the waste 3 and embankment 4 for earth retention are dumped.
Construct waterproof sheet 2 to cover. Thereafter, these operations are repeated in the same manner. However, with this method, embankments 4 for earth retention can be piled up according to the amount of waste dumped.
In order to maintain the angle of repose of the embankment 4, there is a disadvantage that the storage capacity decreases as one goes upwards.Moreover, the embankment 4 used for retaining earth has weak mechanical strength, so it collapses when it rains heavily, causing pollution problems. I was concerned. Therefore, in order to improve the drawbacks of the earth weir construction storage facility shown in FIG. 2, a concrete exterior wall storage facility in which a concrete wall 5 is constructed on the open side has been put into practical use. However, with this method, a strong, high, and long concrete wall 5 would be constructed on the open side of the vast population storage facility, so the construction period until the start of dumping would be long, and the construction work would be long. The problem is that the costs will rise significantly. [Problems to be Solved by the Invention] The present invention has been made based on the above points, and its purpose is to form a cliff surface on at least two surfaces of the inner circumferential surface, and to form an open surface on the remaining surface. To provide an artificial storage facility that can be constructed in a short period of time on a precipitous cliff, can effectively suppress the occurrence of pollution, and can significantly increase dumping capacity. [Means for Solving the Problems] The gist of the present invention is to provide an artificial artificial body constructed on a cliff, in which at least two inner peripheral surfaces are cliff faces, and the remaining face is an open face. The bottom of the storage facility is excavated at a slope so that the open side is slightly higher, and a concrete base is buried at the tip of the open side. Multiple tiers of well girder members are constructed so as to be slightly inclined to the side, and a waterproof sheet is laid on the bottom from the cliff side to the open side so as to penetrate through the foundation concrete base, and the waterproof sheet laid on the bottom On the sheet, waste is sorted and dumped in multiple layers through multiple waterproof sheets for sorting, and the open side of the waterproof sheets for sorting is bent toward the inner surface of the parallel girder member. It is located in an artificial storage facility that is characterized by being built tightly so that it stands up on the side. [Function] The artificial storage facility of the present invention is achieved by firstly constructing the artificial storage facility on a cliff where at least two of the inner peripheral surfaces are cliff faces and the remaining faces are open faces. , solve the location problem, shorten the construction period until the start of dumping, and significantly reduce the construction cost.Secondly, the bottom side is excavated at an angle so that the open side is slightly elevated, and the open side is A foundation concrete platform is buried at the tip, and on top of the foundation concrete platform, multiple levels of parallel girder members are constructed so as to be slightly inclined toward the cliff side, and on the bottom surface, there is a slope from the cliff side to the open side. By laying a waterproof sheet so as to penetrate through the foundation concrete platform, it is possible to completely prevent liquid leakage from dumped waste from leaking to the ground and open surfaces. The waste is separated and dumped in multiple layers through multiple waterproof sheets for classification, and the open side of each waterproof sheet for classification is bent toward the inner surface of the parallel girder member and By constructing the construction so that it stands upright, waste can be dumped after the installation of a waterproof sheet on the bottom without waiting for the artificial storage facility to be completely completed, and the dumped waste can be divided into layers. It can be stored stably, effectively suppressing the generation of foul odors and liquid leakage from waste, and significantly increasing the storage capacity without causing piles of dumped waste to collapse even in heavy rain. be able to. [Example] Next, an example of the artificial storage facility of the present invention will be described with reference to the drawings. FIG. 1 is a partially omitted vertical cross-sectional explanatory view showing an embodiment of an artificial storage facility of the present invention. Although not shown in the figure, the three sides on the left side, the front side, and the opposite side are cliff faces 1 as seen in Figure 1.
In addition, the right side when facing Fig. 1 is an open surface. In Fig. 1, the bottom surface has been excavated with an inclination so that the open side is slightly higher, and at the tip of the open side, a foundation concrete platform 6 on which well girder members can be constructed is buried at a slight inclination. Then, a first multi-stage parallel girder member 20 is constructed on the foundation concrete base 6. Further, a waterproof sheet 2 is installed on the bottom surface of the container so as to penetrate to the open surface side so that the liquid material flowing out from the waste does not leak onto the ground. Dumping work for the waste 3 can be started at the population storage facility that is in this state. First, a truck loaded with waste 3 approaches the high ground above the cliff face 1 of the population storage facility, which is in such a state, and dumps the first waste 3.
When the primary waste 3 reaches an appropriate height, the primary waterproof sheet 2 for classification is applied from the cliff face 1 side to the open face side so as to completely cover the primary waste 3. At this time, the tip of the first waterproof sheet 2 on the open surface side is bent toward the inner circumferential surface at the point where it abuts against the first multi-stage parallel girder member 20, and is in close contact with the inner circumferential surface. It will be constructed. Then, a second multi-stage parallel cross member 20 is constructed on the foundation concrete base 6 buried on the open surface side. Next, the secondary waste 3 is similarly dumped onto the upper layer of the primary classification waterproof sheet 2 from the high ground above the cliff face 1.
When the height reaches the height of the second multi-tier parallel girder member 20, the second waterproof sheet 2 for classification is applied from the cliff face 1 side to the open face side so as to completely cover the secondary waste 3. At this time, the open surface side of the secondary waterproof sheet 2 is bent toward the inner circumferential surface at the point where it abuts against the second multi-tier parallel girder member 20, and is constructed so as to be in close contact with the inner circumferential surface. . Then, a tertiary multi-stage parallel grid member 20 is extended on top of the second multi-stage parallel grid member 20 on the open surface side. Thereafter, in the same way, new waste 3 is collected from the high ground above the cliff face 1.
The operations of dumping, constructing a new categorizing waterproof sheet 2 on the newly dumped waste 3, and adding a new multi-tier parallel girder member 20 onto the existing multi-tier parallel girder member 20 are repeated. By repeating such operations, the dumping operation is completed and an artificial storage facility as shown in Figure 1 is completed. Therefore, the population storage facility of the present invention requires a short construction period until it becomes ready for dumping, has a low construction cost, and has a significantly large dumping capacity. The following table shows the dumping capacity of conventional earth weir storage facilities.
100 each for the construction period and construction cost until the start of dumping.
%, the dumping capacity of the conventional concrete outer wall storage facility and the artificial storage facility of the present invention, the construction period until the start of dumping, and the construction cost are shown as comparative values. Although this table shows comparative values (%), in reality, the unit of dumping capacity is m 3 , the construction period until the start of dumping is in days, and the construction cost is in yen.
【表】
表から明らかなように本発明の人工貯蔵施設は
投棄可能になるまでの工事期間が従来の土堰提工
貯蔵施設と同等の期間でありながら、工事費はそ
の95%で済み、しかも投棄容量を従来の土堰提工
貯蔵施設の180%に増大することができる。更に、
上表には示していないが、開放面側は井桁部材2
0で強固に補強してあり、しかも廃棄物は防水シ
ートで複数層に区分されていることから悪天候な
どによつて懸念がなく、その結果優れた耐水害
性、廃棄物漏洩防止性をも発揮することができ
る。
[発明の効果]
本発明の人工貯蔵施設は投棄可能になるまでの
工事期間が短く、工事費が安価で、しかも投棄容
量を従来の土堰提工貯蔵施より大幅に増大でき、
更に優れた耐水害性及び廃棄物漏洩防止性を発揮
することができるものであり、工業上有用であ
る。[Table] As is clear from the table, the construction period for the artificial storage facility of the present invention until it can be dumped is the same as that of the conventional earth weir storage facility, but the construction cost is 95% of that. Furthermore, the dumping capacity can be increased to 180% of that of conventional earth weir storage facilities. Furthermore,
Although it is not shown in the table above, the open surface side is the cross member member 2.
0, and the waste is separated into multiple layers with waterproof sheets, so there is no concern about bad weather, etc., and as a result, it also exhibits excellent water damage resistance and waste leakage prevention properties. can do. [Effects of the Invention] The artificial storage facility of the present invention requires a short construction period until it can be dumped, has low construction costs, and can significantly increase the dumping capacity compared to conventional earth weir construction storage facilities.
Furthermore, it can exhibit excellent water damage resistance and waste leakage prevention properties, and is industrially useful.
第1図は本発明の人工貯蔵施設の一実施例を示
した一部省略縦断面説明図、第2図は従来の土堰
提工人工貯蔵施設の一部省略縦断面説明図、第3
図は同じく従来のコンクリート外壁人工貯蔵施設
の一部省略縦断面説明図である。
1……断崖面、2……防水シート、3……廃棄
物、4……盛土、5……コンクリート壁、6……
基礎コンクリート台、20……#桁部材。
Fig. 1 is a partially omitted vertical cross-sectional explanatory view showing one embodiment of the artificial storage facility of the present invention, Fig. 2 is a partially omitted longitudinal cross-sectional explanatory view of a conventional earth weir construction artificial storage facility, and Fig. 3
The figure is also a partially omitted longitudinal cross-sectional explanatory view of a conventional concrete external wall artificial storage facility. 1... Cliff surface, 2... Tarpaulin sheet, 3... Waste, 4... Embankment, 5... Concrete wall, 6...
Foundation concrete base, 20...# girder member.
Claims (1)
り、残余面が開放面となつている断崖絶壁に構築
して成る人工貯蔵施設において、その底面は前記
開放面側が小高くなるように傾斜をつけて掘削し
てあると共にその開放面側の先端部には基礎コン
クリート台が埋設してあり且つ該基礎コンクリー
ト台上には前記断崖絶壁側に若干傾斜するように
複数段の井桁部材が構築されており、しかも前記
底面上には前記断崖面側から前記開放面側にかけ
て前記基礎コンクリート台を突き抜けるように防
水シートが敷設されており、そして該底面敷設防
水シート上には廃棄物を複数枚の区分用防水シー
トを介して複数層に区分投棄されるようになつて
おり、しかも該区分用防水シートの前記開放面側
は前記井桁部材の内面側に折り曲げられ且つ内面
側に立ち上がるように密着施工されていることを
特徴とする人工貯蔵施設。1. In an artificial storage facility built on a cliff where at least two of the inner peripheral surfaces are cliff faces and the remaining surface is an open surface, the bottom surface is sloped so that the open surface side is slightly higher. A foundation concrete platform is buried at the tip of the open side of the excavation, and a plurality of well girder members are constructed on the foundation concrete platform so as to be slightly inclined toward the cliff side. Moreover, a waterproof sheet is laid on the bottom surface from the cliff side to the open surface side so as to penetrate through the foundation concrete platform, and a plurality of sheets of waste are placed on the bottom surface of the waterproof sheet. It is designed to be separated and dumped in multiple layers through a classification waterproof sheet, and the open surface side of the classification waterproof sheet is bent toward the inner surface of the parallel girder member and is tightly attached so as to stand up on the inner surface. An artificial storage facility characterized by being constructed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61136450A JPS62295809A (en) | 1986-06-12 | 1986-06-12 | Artificial storage equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61136450A JPS62295809A (en) | 1986-06-12 | 1986-06-12 | Artificial storage equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62295809A JPS62295809A (en) | 1987-12-23 |
JPH0436968B2 true JPH0436968B2 (en) | 1992-06-17 |
Family
ID=15175393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61136450A Granted JPS62295809A (en) | 1986-06-12 | 1986-06-12 | Artificial storage equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62295809A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4409982B2 (en) * | 2004-02-13 | 2010-02-03 | タキロン株式会社 | Renewal structure of final disposal site |
CN105728424B (en) * | 2015-11-26 | 2018-11-27 | 张强 | The ring landfill yard that solid waste solidifies storage is built a dam construction device and its method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58168726A (en) * | 1982-03-31 | 1983-10-05 | Giken Kogyo Kk | Concrete block |
JPS5919653B2 (en) * | 1979-07-31 | 1984-05-08 | 日本電信電話株式会社 | Signal system for mobile phones |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58149394U (en) * | 1982-03-30 | 1983-10-06 | 川鉄商事株式会社 | storage tank |
JPS5919653U (en) * | 1982-07-24 | 1984-02-06 | 吉田コンクリ−ト工業株式会社 | Vegetation stacking block |
-
1986
- 1986-06-12 JP JP61136450A patent/JPS62295809A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919653B2 (en) * | 1979-07-31 | 1984-05-08 | 日本電信電話株式会社 | Signal system for mobile phones |
JPS58168726A (en) * | 1982-03-31 | 1983-10-05 | Giken Kogyo Kk | Concrete block |
Also Published As
Publication number | Publication date |
---|---|
JPS62295809A (en) | 1987-12-23 |
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