The invention discloses a lining structure of an underground pressure shield water transmission tunnel, in which a steel pipe lining is arranged in the concrete prefabricated segment, a concrete socket is arranged directly below the steel pipe lining, a drainage channel is arranged on both sides of the concrete socket, and a cavity is formed between the steel pipe lining and the concrete prefabricated segment. The thickness of the concrete prefabricated segment is the conventional segment of the shield tunnel, and the thickness of the steel pipe lining meets the design of the exposed pipe. The invention saves a large amount of concrete work quantity between the inner and outer linings, greatly simplifies the complex drainage structure between the inner and outer linings, not only reduces the investment, but also reduces the construction difficulty. Because the space between the inner and outer linings is large, the problem of silting and failure of the traditional complex and narrow drainage structure is avoided, because the inner and outer linings are considered according to the separate stress, the stress is simple, and the steel pipe can be designed according to the It is a safe, efficient, low cost and easy to construct underground pressure shield tunnel lining structure.
【技术实现步骤摘要】
地下有压盾构输水洞衬砌结构
本专利技术涉及一种衬砌结构,尤其是一种地下有压盾构输水洞衬砌结构。
技术介绍
近年来,随着社会经济的发展,城市的缺水问题越来越严重,为解决这一问题,将修建大量的调水工程,以满足城市生活和工业供水需求。为了使水方便快捷地达到受水点,这些调水工程的线路不得不穿越城市周边或中心区域,这些区域往往有大量的地面设施和建筑物,拆迁费用和难度非常高。为了减少大量的拆迁征地费用,工程不得不采用地下隧洞的形式,即利用盾构机进行开挖,后进行管片衬砌,满足成洞要求,由于管片承受内压能力差,管片衬砌后还需进行内衬,依靠内衬承受内水压力,内衬材料根据内水压力大小等因素选用预应力混凝土、钢管和普通钢筋混凝土等。为了减少内水压对外衬管片的影响,内衬和外衬之间一般进行隔离,即在运行期内、外衬单独受力,外衬主要承受外荷载,内衬主要承受内水压力。在内衬的材料中,钢管由于其承受内压能力高、不渗水等优点,多被采用,如已建广东的西江引水工程,在建的珠江三角洲水资源配置工程,均采用了钢内衬的结构,即外衬为盾构管片、内衬为钢管,钢管按 ...
【技术保护点】
1.一种地下有压盾构输水洞衬砌结构,其特征在于,混凝土预制管片(4)内设置钢管内衬(1),钢管内衬(1)正下方设置混凝土管座(3),在混凝土管座(3)两侧设置排水槽(2),钢管内衬(1)与混凝土预制管片(4)形成有空腔。/n
【技术特征摘要】
1.一种地下有压盾构输水洞衬砌结构,其特征在于,混凝土预制管片(4)内设置钢管内衬(1),钢管内衬(1)正下方设置混凝土管座(3),在混凝土管座(3)两侧设置排水槽(2),钢管内衬(1)与混凝土预制管片(4)形成有空腔。
2.根据权利要求1所述地下有压盾构输水洞衬砌结构,其特征在于,所述混凝土预制管片(4)厚度为盾构隧洞常规管片,钢管内衬(1)厚度满足明管设计。
...
【专利技术属性】
技术研发人员:吴剑疆,王立成,胡国志,李宁博,杨春宝,李岳东,曹荣国,于野,王腾飞,赵东亮,
申请(专利权)人:水利部水利水电规划设计总院,中水北方勘测设计研究有限责任公司,
类型:发明
国别省市:北京;11
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