The utility model relates to the technical field of tunnel construction survey, in particular to a tunnel vault subsidence observation device based on the principle of isobaric surface. The utility model relates to a monitoring system device for the settlement of tunnel vault based on the principle of isobaric surface, which comprises a tunnel. The tunnel comprises a tunnel vault, a tunnel inlet and a tunnel outlet. The tunnel vault is equipped with several steel pile rings, and the steel pile ring is equipped with observation point devices. The observation point device includes an observation box. The lower part of the observation box is equipped with an inlet valve and an outlet valve. The inner part of the observation box is equipped with a hydraulic sensor, the upper part of the observation box is equipped with a flat pressure valve and a cable slot, the tunnel inlet or outlet is equipped with a starting point device, the reference point slot is equipped with a hydraulic sensor, the reference point slot, the water tank and the intake valve of the observation point device are connected through a pipeline, and the hydraulic sensor and the starting point of the observation point device are connected with each other. The hydraulic sensor of the device is connected to the acquisition unit by parallel cable.
【技术实现步骤摘要】
基于等压面原理的隧洞拱顶下沉监测系统装置
本技术涉及隧道施工原型安全监测
,具体涉及一种基于等压面原理的隧洞拱顶下沉监测系统装置。
技术介绍
隧道拱顶的下沉过程及其最终沉降量则是隧道支护设计及地层环境控制的重要基础,因此,为了保障隧道的安全施工,及时掌握隧道整体的稳定情况,需要进行隧道拱顶下沉监测。对于地下隧洞拱顶下沉监测,常规方法主要有:1)测量拱顶及两侧拱脚共3个收敛测点位移,并假定拱脚测点无竖向位移,在平面直角坐标系中换算得到拱顶测点沉降位移;2)通过在拱顶测点吊环处悬挂水准尺并用水准仪测量拱顶高程计算得到拱顶沉降位移;3)在拱顶测点收敛桩末端吊环处设置反光十字贴,通过全站仪直接测量拱顶高程坐标计算得到拱顶沉降位移。综上,常规方法仅能进行人工观测,在大跨度及高洞高断面监测作业时,或立水准尺或者悬挂钢尺困难,或收敛测点间距离过大,收敛读数仪测读误差大或超仪器量程,或由于施工粉尘大,较难发现反光片十字中心标志或光学仪器测量误差较大。因此,针对以上难题,研究一种能够实现自动化、连续监测隧道拱顶下沉的观测装置和测量方法,尤其是在大跨度地下洞室观测断面密集布置的 ...
【技术保护点】
1.基于等压面原理的隧洞拱顶下沉监测系统装置,其特征在于:包括隧洞,起测点装置和若干观测点装置,所述隧洞包括隧洞拱顶,隧洞进口和隧洞出口,所述隧洞拱顶安装有钢筋桩,所述钢筋桩上设有若干钢筋桩吊环,所述钢筋桩吊环上安装有观测点装置,所述观测点装置包括观测盒,所述观测盒下部设有进水阀门和出水阀门,所述观测盒内部设有液压传感器,所述观测盒上部设有平压阀门和电缆开槽,所述隧洞的进口或者出口外安装有起测点装置,所述起测点装置包括水箱,水准标点,采集单元和基准点槽,所述基准点槽内设有液压传感器,所述基准点槽,水箱,观测点装置的进水阀门通过管道相连,所述观测点装置的出水阀门和相邻观测点装 ...
【技术特征摘要】
1.基于等压面原理的隧洞拱顶下沉监测系统装置,其特征在于:包括隧洞,起测点装置和若干观测点装置,所述隧洞包括隧洞拱顶,隧洞进口和隧洞出口,所述隧洞拱顶安装有钢筋桩,所述钢筋桩上设有若干钢筋桩吊环,所述钢筋桩吊环上安装有观测点装置,所述观测点装置包括观测盒,所述观测盒下部设有进水阀门和出水阀门,所述观测盒内部设有液压传感器,所述观测盒上部设有平压阀门和电缆开槽,所述隧洞的进口或者出口外安装有起测点装置,所述起测点装置包括水箱,水准标点,采集单元和基准点槽,所述基准点槽内设有液压传感器,所述基准点槽,水箱,观测点装置的进水阀门通过管道相连,所述观测点装置的出水阀门和相邻观...
【专利技术属性】
技术研发人员:郑淇文,高尚,彭强,戴春华,许小杰,许孝臣,魏海云,赵震波,来晟,李洪强,郑汉种,周苏波,黄阳杰,
申请(专利权)人:浙江广川工程咨询有限公司,浙江省水利河口研究院,
类型:新型
国别省市:浙江,33
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