JP2676068B2 - How to fix the tarpaulin - Google Patents
How to fix the tarpaulinInfo
- Publication number
- JP2676068B2 JP2676068B2 JP63198083A JP19808388A JP2676068B2 JP 2676068 B2 JP2676068 B2 JP 2676068B2 JP 63198083 A JP63198083 A JP 63198083A JP 19808388 A JP19808388 A JP 19808388A JP 2676068 B2 JP2676068 B2 JP 2676068B2
- Authority
- JP
- Japan
- Prior art keywords
- waterproof sheet
- lining concrete
- fixing
- fixed
- primary lining
- 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 - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 19
- 239000011162 core material Substances 0.000 claims description 14
- 238000004873 anchoring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 238000010276 construction Methods 0.000 description 8
- 239000000543 intermediate Substances 0.000 description 8
- 239000004831 Hot glue Substances 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000010985 glycerol esters of wood rosin Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Revetment (AREA)
- Lining And Supports For Tunnels (AREA)
- Processing Of Solid Wastes (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、NATM工法のトンネル、護岸（河川、海
岸）、堤防、貯水池、調整池、泥埋函工法、廃棄物処理
場、建物（ビル等）の構造物に防水シートを固定する方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a NATM method tunnel, revetment (river, coast), embankment, reservoir, regulating pond, mud buried method, waste treatment plant, building (building, etc.). The present invention relates to a method of fixing a waterproof sheet to a structure of.
従来技術 構造物に防水シートを固定する方法としては、従来接
着剤工法、ホットメルト工法およびこれらと釘等の碇着
材との併用工法等がある。2. Description of the Related Art As a method for fixing a waterproof sheet to a structure, there are a conventional adhesive construction method, a hot melt construction method and a construction method in which these are combined with an anchor material such as a nail.
接着剤工法は、構造物と防水シートとを直接接着剤に
より接着する工法である。The adhesive construction method is a construction method in which the structure and the waterproof sheet are directly bonded with an adhesive.
ホットメルト工法は、熱可溶性成樹脂等を用い、構造
物に防水シートを加熱溶着する工法である。The hot melt method is a method of heat-welding a waterproof sheet to a structure using a heat-soluble synthetic resin or the like.
溶着剤又はホットメルト接着剤と碇着材とを併用する
工法は、高造物表面に放水シートを張設し、その防水シ
ート表面にシート状の接着剤またはホットメルト接着剤
を貼着し、その上から直接釘を打込むか、あるいは釘を
防水シートの表面から打込んだのちにその釘の頭部を接
着剤又はホットメルト接着剤等で覆う工法（特公昭63−
15439号公報）である。A method of using a welding agent or a hot-melt adhesive and an anchoring material together is to stretch a water discharge sheet on the surface of a high structure, and to bond a sheet-shaped adhesive or hot-melt adhesive to the surface of the waterproof sheet, A method of driving nails directly from the top or driving the nails from the surface of the waterproof sheet and then covering the heads of the nails with an adhesive or hot melt adhesive (Japanese Patent Publication No. 63-
No. 15439).
特公昭63−15439号公報記載の発明はその後者の工法
に相当するもので、同工法により防水シートが固定され
た場合の構造を第６図に断面図で図示する。The invention described in Japanese Examined Patent Publication No. 63-15439 corresponds to the latter construction method, and the structure when the waterproof sheet is fixed by the construction method is shown in FIG. 6 in a sectional view.
コンクリート構造物01（トンネルの一次覆工コンクリ
ート）に防水シート02を張設し、その上から直接釘03を
打込んで、防水シート02を固定したのち、釘03の頭部を
覆うようにホットメルト接着剤04を塗着せしめたもので
ある。A waterproof sheet 02 is stretched over the concrete structure 01 (primary lining concrete in the tunnel), and a nail 03 is directly driven from above to fix the waterproof sheet 02, and then hot so as to cover the head of the nail 03. It is a melt adhesive 04 applied.
釘止め部の漏水はホットメルト接着剤04によって止水
されることになる。Water leakage at the nailed portion will be stopped by the hot melt adhesive 04.
解決しようとする課題 以上の各種防水シートの固定方法のうち接着剤工法と
ホットメルト工法は直接構造物表面に接着剤又はホット
メルト接着剤を塗着することになるので、水分があると
施工できない欠点を有する。Problems to be solved Among the fixing methods of various waterproof sheets described above, the adhesive method and the hot melt method directly apply the adhesive or the hot melt adhesive to the surface of the structure, so that the construction cannot be performed if there is water. It has drawbacks.
一方接着剤又はホットメルト接着剤と碇着材とを併用
した工法は、構造物表面に直接防水シートが接触してい
るので水分があると、構造物表面に防水シートが安定し
て固定されず碇着材間でたるみを生じたりして不具合を
生じる。On the other hand, the method of using the adhesive or hot-melt adhesive and the anchoring material together causes the waterproof sheet to come into direct contact with the surface of the structure, so that if there is water, the waterproof sheet cannot be stably fixed to the surface of the structure. This causes a problem such as slack between anchor materials.
さらに防水シートに釘穴等の穴をあけることになるの
で完全な防水を期待できない。Furthermore, since holes such as nail holes are to be made in the waterproof sheet, complete waterproofing cannot be expected.
課題を解決するための手段および作用 本発明はかかる点に鑑みなされたもので、その目的と
する処は、水分があっても施工可能で防水シートに穴を
あけずに固定することができる防水シートの固定方法を
供する点にある。Means and Actions for Solving the Problems The present invention has been made in view of the above points, and a purpose thereof is a waterproof structure that can be installed even if there is water and can be fixed without making a hole in a waterproof sheet. The point is to provide a seat fixing method.
すなわち本発明は芯体材の表面に接着性及び粘着性又
はそのいずれか一方の性質を有する固定材を貼着した仲
介物を構造物の表面に碇着材をもって固着し、その仲介
物の上に防水シートを前記固定材により貼着する防水シ
ートの固定方法である。That is, the present invention is to fix an intermediary material having a fixing material having adhesiveness and / or adhesiveness on the surface of a core material to the surface of a structure with an anchoring material, and Is a method for fixing a waterproof sheet, in which the waterproof sheet is attached by the fixing material.
構造物表面には仲介物が碇着材により固定され、その
上に防水シートが貼着されるので構造物表面に水分を有
しても仲介物の固着および防水シートの貼着のいずれに
ついても影響を受けない。An intermediary is fixed to the surface of the structure with an anchoring material, and a waterproof sheet is affixed on it, so even if the surface of the structure has water, both the affixing of the intermediary and the application of the waterproof sheet are required. Not affected.
また防水シートに穴をあけることはないので防水の完
全化を図れる。Moreover, since no holes are made in the waterproof sheet, waterproofing can be achieved completely.
実 施 例 以下第１図ないし第３図に図示した本発明に係る一実
施例について説明する。Embodiment An embodiment according to the present invention shown in FIGS. 1 to 3 will be described below.
本実施例はNATM工法のトンネルに適用したもので、第
１図に示すように地山１側に一次覆工コンクリート２を
打設し、この一次覆工コンクリート２に防水シート３を
張設してさらにこの防水シート３に二次覆工コンクリー
ト４を打設するものであり、防水シート３を一次及び二
次覆工コンクリート2,4間に介装することで一次覆工コ
ンクリート２側からの湧水を止水して二次覆工コンクリ
ート４側に漏出するのを防止するものである。This embodiment is applied to a tunnel of NATM method. As shown in FIG. 1, a primary lining concrete 2 is placed on the ground 1 side, and a waterproof sheet 3 is laid on the primary lining concrete 2. In addition, the secondary lining concrete 4 is placed on the waterproof sheet 3 and the waterproof sheet 3 is interposed between the primary and secondary lining concrete 2 and 4 so that the primary lining concrete 2 side The spring water is stopped to prevent leakage to the secondary lining concrete 4 side.
一次覆工コンクリート２の表面に防水シート３を張設
した構造を第２図に図示する。The structure in which the waterproof sheet 3 is stretched on the surface of the primary lining concrete 2 is shown in FIG.
第２図は説明用にモデル化して図示しているが実際は
一次覆工コンクリート２の表面は不陸があり防水シート
３との間も間隔はせまい。Although FIG. 2 is shown as a model for the purpose of explanation, the surface of the primary lining concrete 2 is actually uneven, and there is no space between it and the waterproof sheet 3.
防水シート３は一次覆工コンクリート２に固定された
仲介物10を介して張設されており、ここに用いられてい
る仲介物10は第３図に図示するように、亜鉛メッキ鉄
板、熱可塑性樹脂または熱硬化性樹脂から成る芯体材11
に固定材12を貼着して２層構造とした帯状の仲介物であ
る。The waterproof sheet 3 is stretched through an intermediary 10 fixed to the primary lining concrete 2. The intermediary 10 used here is a galvanized iron plate, a thermoplastic resin as shown in FIG. Core material made of resin or thermosetting resin 11
It is a belt-shaped mediator having a two-layer structure in which a fixing material 12 is attached to.
固定材12としては、アスファルト、熱可塑性樹脂およ
び粘着付与剤を混合したものが用いられている。As the fixing material 12, a mixture of asphalt, a thermoplastic resin and a tackifier is used.
ここに熱可塑性樹脂にはPE,EVA,PP,ポリスチレン等の
ポリオレフィン系の樹脂が使用され、粘着付与剤として
はゴム系材料ではロジン，エステルガム等がポリオレフ
ィン系材料ではポリテルベン系樹脂またはC5系石油樹脂
等が使用される。Polyolefin resins such as PE, EVA, PP and polystyrene are used for the thermoplastic resin, and rosin and ester gum are used as tackifiers for rubber materials and polyterbene resins or C 5 resins for polyolefin materials. Petroleum resin or the like is used.
以上の芯体材11と固定材12の２層からなる帯状の仲介
物10はその芯体材11側を一次覆工コンクリート２の表面
に接触させて張設され、所定の芯体材11の側縁付傍にコ
ンクリート打込用の釘13を打込んで仲介物10を一次覆工
コンクリート２に固定する。The strip-shaped intermediate 10 composed of two layers of the core material 11 and the fixing material 12 is stretched by contacting the core material 11 side with the surface of the primary lining concrete 2 and A concrete driving nail 13 is driven near the side edge to fix the intermediate 10 to the primary lining concrete 2.
このようにして固定される帯状の仲介物10は一次覆工
コンクリート２の表面の不陸に合わせて適当な場所を選
択し、また適当な長さに切断して使用され一次覆工コン
クリート２に固定される。The belt-like medium 10 fixed in this manner is used by selecting an appropriate place according to the unevenness of the surface of the primary lining concrete 2 and cutting it to an appropriate length to use it for the primary lining concrete 2. Fixed.
そしてトンネルの内側に向いた固定材12の表面を熱風
又は裸火等の熱源で溶かし、防水シート３を貼着する。Then, the surface of the fixing material 12 facing the inside of the tunnel is melted with a heat source such as hot air or an open flame, and the waterproof sheet 3 is attached.
防水シート３は合成樹脂シート15と不織布16との２層
からなり、不織布16側を仲介物10に貼着する。The waterproof sheet 3 is composed of two layers of a synthetic resin sheet 15 and a non-woven fabric 16, and the non-woven fabric 16 side is attached to the intermediate 10.
したがって防水シート３は釘等による一切の穴をあけ
ずに一次覆工コンクリート２に周設されるので、一次覆
工コンクリート２より生ずる湧水は完全に防水シート３
により止水されて二次覆工コンクリート４側に漏出する
ことがない。Therefore, since the waterproof sheet 3 is provided around the primary lining concrete 2 without making any holes such as nails, the spring water generated from the primary lining concrete 2 is completely waterproof.
Water will not be leaked to the secondary lining concrete 4 side due to the water.
なお湧水は不織布16をつたわって流れ落ちる。 The spring water flows through the nonwoven fabric 16 and flows down.
また防水シート３は仲介物10を介して貼着されるので
一次覆工コンクリート２の表面に湧水する水分に影響さ
れず、確固として一次覆工コンクリート２に固定するこ
とができる。Further, since the waterproof sheet 3 is attached via the intermediary 10, it can be firmly fixed to the primary lining concrete 2 without being affected by the water springing on the surface of the primary lining concrete 2.
また熱源により固定材12を溶かして防水シート３を貼
着するので従来の接着剤によるものに比べ塗りムラやオ
ープンタイムのバラツキによる固定品質の低下が防止で
きるとともに気象条件の影響も受けずに防水シート３を
固定でき止水が容易かつ確実にできる。In addition, since the fixing material 12 is melted by the heat source and the waterproof sheet 3 is attached, deterioration of the fixing quality due to uneven coating and variations in open time can be prevented compared to the conventional adhesive, and waterproof without being affected by weather conditions. The seat 3 can be fixed and water can be stopped easily and surely.
なお仲介物10を適当な長さに切断し一次覆工コンクリ
ート２の内周壁の適当な位置に固定していくので、一次
覆工コンクリート２の内周壁面の不陸の多少により適当
に固定位置を調整することができ、現場の状況に合わせ
て確固とした防水シート３の固定を可能とする。Since the intermediate 10 is cut to an appropriate length and fixed at an appropriate position on the inner peripheral wall of the primary lining concrete 2, it is appropriately fixed depending on the degree of unevenness of the inner peripheral wall of the primary lining concrete 2. Can be adjusted, and the waterproof sheet 3 can be firmly fixed according to the situation of the site.
以上の実施例では不織布16付きの防水シート３を仲介
物10に貼着するものであったが、湧水の少ない所では第
４図に図示するように合成樹脂シート単層からなる防水
シート20を仲介物10に貼着するようにしてもよい。In the above embodiment, the waterproof sheet 3 with the non-woven fabric 16 is adhered to the intermediary material 10. However, in a place where there is little spring water, as shown in FIG. May be attached to the agent 10.
また仲介物の他の例を示すと、第５図に図示するよう
な変形例がある。Further, as another example of the intermediary, there is a modified example shown in FIG.
第５図（ａ）に示す仲介物25は帯状の芯体材26の片面
および両側面に固定材27を貼着したものであり、第５図
（ｂ）に示す仲介物30は芯体材31の両面に固定材32を貼
着したものであり、第５図（ｃ）に示す仲介物35は芯体
材36の両面および両側面を覆って固定材37が貼着された
ものである。The intermediate 25 shown in FIG. 5 (a) is a strip-shaped core body material 26 to which the fixing material 27 is attached on one side and both sides, and the intermediate body 30 shown in FIG. 5 (b) is the core body material. The fixing material 32 is adhered to both surfaces of 31, and the intermediary material 35 shown in FIG. 5 (c) is one in which the fixing material 37 is adhered so as to cover both and both sides of the core material 36. .
いずれも芯体材および固定材の材質は前記実施例と同
様である。The materials of the core material and the fixing material are the same as those in the above-mentioned embodiment.
第５図（ｂ）（ｃ）の例は芯体材31,36の両面に固定
材32,37が貼着されているので、構造物の表面に水分を
有しない場合に仲介物30,35を構造物に釘等により固定
すると、固定材32,37の接着力も働き仲介物30,35はより
確固として構造物に固定される。In the example of FIGS. 5 (b) and (c), since the fixing materials 32 and 37 are adhered to both surfaces of the core materials 31 and 36, when the surface of the structure does not have water, the mediators 30 and 35 are used. When is fixed to the structure with a nail or the like, the adhesive force of the fixing members 32 and 37 also works and the intermediates 30 and 35 are more firmly fixed to the structure.
以上の実施例はNATM工法のトンネルに本発明を適用し
た例であったがその他貯水池、建物等の構造物の止水の
ため防水シートを張設する場合にも適用できるものであ
る。The above embodiment is an example in which the present invention is applied to the tunnel of the NATM method, but it can also be applied to a case where a waterproof sheet is stretched to stop the water of structures such as a reservoir and a building.
発明の効果 本発明は、防水シートに一切穴をあけることなく仲介
物を介して構造物に確固として固定されるので、止水の
完全化を図ることができる。EFFECTS OF THE INVENTION Since the present invention is firmly fixed to a structure through an intermediary without making any holes in the waterproof sheet, it is possible to achieve complete waterproofing.
構造物に碇着材によって固着された仲介物を介して防
水シートが貼着されるので、構造物表面に水分を有して
も施工可能で防水シートを容易かつ確実に固定すること
ができる。Since the waterproof sheet is attached to the structure through the intermediary that is fixed to the structure with the anchoring material, the structure can be installed even if the surface of the structure has water, and the waterproof sheet can be easily and surely fixed.
第１図は本発明に係る一実施例のNATM工法のトンネルの
断面図、第２図は同実施例の方法により一次覆工コンク
リートに防水シートが固定された状態を示す要部断面
図、第３図は同実施例に使用される仲介物の斜視図、第
４図は別実施例による防水シート固定部分の要部断面
図、第５図は仲介物の変形例を示す斜視図、第６図は従
来の方法により一次覆工コンクリートに防水シートが固
定された状態を示す要部断面図である。 １……地山、２……一次覆工コンクリート、３……防水
シート、４……二次覆工コンクリート、 10……仲介物、11……芯体材、12……固定材、13……
釘、 15……合成樹脂シート、16……不織布、 20……防水シート、 25……仲介物、26……芯体材、27……固定材、 30……仲介物、31……芯体材、32……固定材、 35……仲介物、36……芯体材、37……固定材。FIG. 1 is a sectional view of a tunnel of NATM method according to one embodiment of the present invention, and FIG. 2 is a sectional view of a main part showing a state where a waterproof sheet is fixed to a primary lining concrete by the method of the embodiment, FIG. 3 is a perspective view of an intermediary used in the same embodiment, FIG. 4 is a sectional view of a main part of a waterproof sheet fixing portion according to another embodiment, and FIG. 5 is a perspective view showing a modified example of the intermediary. The figure is a cross-sectional view of essential parts showing a state in which a waterproof sheet is fixed to primary lining concrete by a conventional method. 1 ... Ground, 2 ... Primary lining concrete, 3 ... Waterproof sheet, 4 ... Secondary lining concrete, 10 ... Agent, 11 ... Core material, 12 ... Fixing material, 13 ... …
Nail, 15 …… Synthetic resin sheet, 16 …… Nonwoven fabric, 20 …… Waterproof sheet, 25 …… Medium, 26 …… Core material, 27 …… Fixing material, 30 …… Medium, 31 …… Core body Material, 32 …… Fixing material, 35 …… Intermediate, 36 …… Core material, 37 …… Fixing material.
Claims (1)
いずれか一方の性質を有する固定材を貼着した仲介物を
構造物の表面に碇着材をもって固着し、その仲介物の上
に防水シートを前記固定材により貼着することを特徴と
する防水シートの固定方法。1. A mediator having a fixing material having adhesiveness and / or adhesiveness or one of the properties adhered to the surface of a core material is fixed to the surface of a structure with an anchoring material, and the mediator A method of fixing a waterproof sheet, characterized in that a waterproof sheet is attached to the top by the fixing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63198083A JP2676068B2 (en) | 1988-08-10 | 1988-08-10 | How to fix the tarpaulin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63198083A JP2676068B2 (en) | 1988-08-10 | 1988-08-10 | How to fix the tarpaulin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02140399A JPH02140399A (en) | 1990-05-30 |
| JP2676068B2 true JP2676068B2 (en) | 1997-11-12 |
Family
ID=16385230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63198083A Expired - Fee Related JP2676068B2 (en) | 1988-08-10 | 1988-08-10 | How to fix the tarpaulin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2676068B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249825A (en) * | 2005-03-11 | 2006-09-21 | Yamachu Shoji Kk | Construction method for sealing sheet for revetment and supporting pile for slope for fixing sealing sheet |
| JP4566950B2 (en) * | 2006-06-21 | 2010-10-20 | 株式会社エイチ・アール・オー | Structure of waste disposal site |
-
1988
- 1988-08-10 JP JP63198083A patent/JP2676068B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02140399A (en) | 1990-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |