Method of producing tunnel or like structure
专利汇可以提供Method of producing tunnel or like structure专利检索，专利查询，专利分析的服务。并且A tunnel section is produced by enclosing an annular ring of expanded metal within an outer covering of plastic material. The expanded metal has inward projections struck out from it which are small enough to enter the spaces or to enter into openings provided in another sheet. The inner surface of the expanded metal is then sprayed with concrete, the thickness of the layer formed being less than the length of the struck out tongues. After the concrete is sufficiently cured, another layer of expanded metal is placed on the inside wall, with the tongues of the first layer passing through openings in it, and the tongues are bent over to secure the latter layer in position and to connect the layers together. The second layer also has inwardly projected tongues. The second layer is then sprayed in the same manner as the first. This is continued until the desired wall thickness is obtained.，下面是Method of producing tunnel or like structure专利的具体信息内容。
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 多孔陶粒混凝土及其制备方法和应用 | 2020-05-30 | 6 |
| 一种用于压电发电沥青混凝土的空心多孔微球及制备方法 | 2020-07-02 | 0 |
| 双内核防屈曲支撑结构 | 2021-01-20 | 6 |
| 一种复合保温系统 | 2021-01-26 | 1 |
| Deodorizing treatment using calcium silicate type porous cured body | 2022-04-01 | 5 |
| Artificial floating island | 2021-07-09 | 0 |
| Treatment process for concrete | 2020-09-16 | 2 |
| 유효미생물을 포함하는 친환경 호안블록 | 2021-04-07 | 4 |
| 녹화 마대를 이용한 숏크리트 시공지의 녹화 공법 | 2021-10-07 | 3 |
| 단면강성 및 모멘트 저항력이 증대된 강박스 거더 및 이를 이용한 교량 시공방법 | 2020-10-18 | 0 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
