The invention discloses a dam body for blocking mountain torrents and debris flows in mountain rivers. The dam body comprises at least one prefabricated prestressed arch with an arch ring convex upward in plane and an arch foot arranged between the corbels of two side retaining walls. The precast prestressed arch is a precast prestressed concrete arch. The retaining wall includes side pier retaining wall and middle pier retaining wall, and the foundation of side pier retaining wall and middle pier retaining wall is constructed by diaphragm wall to provide the anti-sliding force of the dam body. The upper reaches of the dam are interlaced with reinforced concrete anti-collision block. A plunge pool is formed between the precast prestressed arch and the energy dissipation tail bucket, and the anti-scouring sea overflow is laid downstream of the energy dissipation tail bucket. The dam has low requirements for foundation and stability, and is suitable for various topographic and geological conditions. Prestressed arch is a prefabricated concrete arch structure, which can be manufactured in advance in the factory, directly hoisted on site, convenient and quick construction, short construction period, convenient maintenance; and this kind of dam construction without construction diversion, greatly saving human and material resources; because of its small size, simple structure, low cost.
【技术实现步骤摘要】
用于拦阻山区河道山洪、泥石流的坝体
本专利技术涉及一种水工建筑物结构,尤其是一种用于拦阻山区河道山洪、泥石流的坝体。
技术介绍
山洪、泥石流是山区常见的自然灾害,且具有突发性,而我国国土面积约有三分之二是山区地形,因此泥石流在我国,特别是西部地区分布相当广泛,灾害比较严重。河道附近的居民生命财产安全,以及城镇、厂矿、路桥等设施都会受到泥石流破坏,造成的经济损失相当巨大。灾害的发展直接威胁着流域内及下游区人民生命财产安全,严重地制约着当地社会经济的健康发展。泥石流灾害的预报手段尚不成熟,因此,为保证人身和财产安全,应采取有效的安全防治措施,最大限度减小泥石流灾害的危害性。传统拦挡泥石流的坝体可分为重力坝及拱坝两大类型。重力坝根据填筑材料不同,又可分为土坝、干砌石坝、浆砌石坝、土石混合坝、铁丝石笼坝等,还有对泥石流部分拦挡的透过式重力坝,此种坝型拦粗排细,如格栅坝、缝隙坝等坝型。另外还有柔性的钢索坝。坝型的选择应考虑沟谷类型、地形地质条件、泥石流的规模及下游保护对象的重要性等,结合不同坝型的适用条件、优缺点来合理选用。传统拦沙坝在工程实践中或多或少存在一定的缺点。(1)重力坝:以自重在地基上产生的摩擦力来抵抗泥石流产生的推力和冲击力。优点是:结构简单,施工方便,就地取材,耐久性强。缺点是体型笨重,工程量大,且对地基的地质条件要求较高,施工需要施工导流,施工程序较为复杂。(2)拱坝:拱坝可建在沟谷狭窄、两岸基岩坚固的坝址处。拱坝在平面上呈凸向上游的弓形,拱圈受压应力作用,可充分利用石料和混凝土很高的抗压强度,具有省工省料等特点。但拱坝对坝址地质条件要求较高,设计 ...
【技术保护点】
1.一种用于拦阻山区河道山洪、泥石流的坝体,其特征在于,坝体包括至少一个装配式的预制预应力拱,拱圈在平面上呈凸向上游的弓形,拱脚装配在两侧挡墙牛腿之间。
【技术特征摘要】
1.一种用于拦阻山区河道山洪、泥石流的坝体,其特征在于,坝体包括至少一个装配式的预制预应力拱,拱圈在平面上呈凸向上游的弓形,拱脚装配在两侧挡墙牛腿之间。2.根据权利要求1所述用于拦阻山区河道山洪、泥石流的坝体,其特征在于,所述预制预应力拱为预制预应力混凝土拱(1)。3.根据权利要求1所述用于拦阻山区河道山洪、泥石流的坝体,其特征在于,所述挡墙包括边墩挡墙(2)和中墩挡墙(3),边墩挡...
【专利技术属性】
技术研发人员:王立成,任鑫龙,李岳东,马妹英,李佳隆,丁兆亮,王蓟清,关宇飞,武帅,刘伟丽,许鸿飞,
申请(专利权)人:中水北方勘测设计研究有限责任公司,
类型:发明
国别省市:天津,12
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。