阅读说明：本技术 一种磁感应大坝变形监测装置及方法 (Magnetic induction dam deformation monitoring device and method ) 是由 吴雄伟 金华辉 曾海英 张震 姜永兴 占川 史燕南 黄阳杰 陈海斌 叶沛楠 于 2020-08-06 设计创作，主要内容包括：本发明公开了一种磁感应大坝变形监测装置及方法。本发明装置包括测量基桩、夹线装置、钢丝线、磁致伸缩位移计及磁环；所述钢丝线串接磁环后通过夹线装置绷紧并固定于大坝两端山体的测量基桩上,所述磁致伸缩位移计竖直或水平安装于大坝测线的各测点上,磁致伸缩位移计和钢丝线位于同平面或正交,以使磁致伸缩位移计和坝体形成变形一致体；所述磁环套入磁致伸缩位移计的波导杆上并保持自由伸缩。本发明结构原理简单可靠,操作方便,可用于大坝沉降和位移观测,并可通过应用高精度磁致伸缩位移计,满足现行规范对大坝变形观测的精度要求,可连接自动化模块实现测量的自动化和信息化,大大提高了测量效率,可广泛使用于大坝变形监测。(The invention discloses a magnetic induction dam deformation monitoring device and method. The device comprises a measuring foundation pile, a wire clamping device, a steel wire, a magnetostrictive displacement meter and a magnetic ring; the steel wire is connected with the magnetic ring in series, then tightened and fixed on the measuring foundation piles of the mountain bodies at the two ends of the dam through the wire clamping device, the magnetostrictive displacement meters are vertically or horizontally arranged on each measuring point of the dam measuring wire, and the magnetostrictive displacement meters and the steel wire are positioned on the same plane or are orthogonal, so that the magnetostrictive displacement meters and the dam body form a deformation consistent body; the magnetic ring is sleeved on a waveguide rod of the magnetostrictive displacement meter and keeps freely stretching. The invention has simple and reliable structure principle and convenient operation, can be used for dam settlement and displacement observation, can meet the precision requirement of the current specification on dam deformation observation by applying the high-precision magnetostrictive displacement meter, can be connected with an automation module to realize automation and informatization of measurement, greatly improves the measurement efficiency, and can be widely used for dam deformation monitoring.)

1. The utility model provides a magnetic induction dam deformation monitoring devices which characterized in that: the device comprises a measuring foundation pile, a wire clamping device, a steel wire, a magnetostrictive displacement meter and a magnetic ring; the steel wire is connected with the magnetic ring in series, tightened by the wire clamping device and fixed on the measuring foundation piles of the mountain bodies at two ends of the dam, the magnetostrictive displacement meters are vertically or horizontally arranged on each measuring point of the dam measuring line, and the magnetostrictive displacement meters and the steel wire are positioned on the same plane or are orthogonal, so that the magnetostrictive displacement meters and the dam body form a deformation consistent body; the magnetic ring is sleeved on a waveguide rod of the magnetostrictive displacement meter and keeps freely stretching.

2. The magnetic induction dam deformation monitoring device of claim 1, wherein: the wire clamping device comprises a wire clamping disc, a wire clamping fixing top cover and a wire fixing triangular groove; the wire clamping disc is poured on the top of the measuring foundation pile, the steel wire penetrates through a wire fixing triangular groove formed in the wire clamping disc and then is fixed to the wire clamping disc, and the wire clamping fixing top cover is fixed to the wire fixing triangular groove through screws.

3. A monitoring method using the magnetic induction dam deformation monitoring device of claim 1 or 2, characterized in that: it comprises the following steps:

a. respectively pouring measuring foundation piles on mountain bedrocks at two ends of the dam to form a dam body deformation measuring line;

b. pouring a wire clamping disc of a wire clamping device at the top of the measuring foundation pile, and enabling the two wire fixing triangular grooves to be located on the measuring line;

c. arranging measuring points on a dam body measuring line according to measuring requirements, and vertically or horizontally and fixedly installing a magnetostrictive displacement meter on the dam body measuring points so as to enable the magnetostrictive displacement meter and the dam body to form a deformation consistent body;

d. selecting steel wire wires with different diameters according to the length of the dam body and the number of observation points, and connecting the steel wire wires with the magnetic ring in series by penetrating the steel wire wires around the edge of the magnetic ring;

e. sleeving a magnetic ring on a waveguide rod of a magnetostrictive displacement meter, tightening and fixing a steel wire in a wire clamping device arranged at the top of a measuring foundation pile, and keeping the magnetic ring within the effective measuring range of the waveguide rod all the time;

f. fixing the wire clamping and fixing the top cover on the wire clamping disc, starting daily measurement, wherein the telescopic deformation of the magnetostrictive displacement meters is the dam deformation displacement in the direction, and installing the magnetostrictive displacement meters in different directions to measure the dam displacement deformation in different directions.

Technical Field

The invention relates to the technical field of dam deformation monitoring, in particular to a magnetic induction dam deformation monitoring device and method.

Background

The reservoir dam plays an important role in disaster prevention and reduction in national economic construction, and the operation working state of the dam can be accurately known only by a dam safety monitoring technology; with the advance of intellectualization and informatization management, the realization of automation of dam deformation monitoring is one of the important development trends of reservoir dam safety monitoring at present. At present, the deformation monitoring of the reservoir dam is mainly realized by observing or regularly inspecting by utilizing instruments such as a level gauge, a total station and the like manually, so that the deformation state of the dam is mastered, and the automation and informatization of the deformation monitoring of the dam cannot be realized in a large area.

Disclosure of Invention

In order to overcome the defects of the prior art, adapt to the requirements of electrification and automatic monitoring of dam deformation monitoring and meet the requirements of dam deformation monitoring precision and measuring range, the invention utilizes steel wires tightened by mountain foundation piles at two ends of a dam body to be sleeved into an annular magnetic ring as a relatively immobile point, a magnetostrictive displacement meter is fixed on a dam body measuring point to form a dam body and magnetostrictive displacement meter deformation consistent body, and at the moment, the dam body deforms to drive the relative telescopic deformation of the magnetic ring and a waveguide rod, thereby realizing the final purpose of dam deformation monitoring. The observation precision, the measuring range and the reliability of the current magnetostrictive displacement meter all meet the requirements of the current dam deformation monitoring specification, and the invention provides an effective automatic monitoring way for dam deformation monitoring.

The technical scheme provided by the invention is as follows:

a magnetic induction dam deformation monitoring device comprises a measuring foundation pile, a wire clamping device, a steel wire, a magnetostrictive displacement meter and a magnetic ring; the steel wire is connected with the magnetic ring in series, then tightened by the wire clamping device and fixed on the measuring foundation piles arranged on the mountain bodies at the two ends of the dam, the magnetostrictive displacement meters are vertically or horizontally arranged on each measuring point of the dam measuring line, and the magnetostrictive displacement meters and the steel wire are kept to be positioned on the same plane or orthogonal, so that the magnetostrictive displacement meters and the dam bodies form a deformation consistent body; the magnetic ring is freely sleeved on a waveguide rod of the magnetostrictive displacement meter and keeps freely stretching; the wire clamping device comprises a wire clamping disc, a wire clamping fixing top cover and a wire fixing triangular groove, the wire clamping disc is poured on the top of the measuring foundation pile, a steel wire penetrates through the wire fixing triangular groove arranged on the wire clamping disc and then is fixed on the wire clamping disc, and the wire clamping fixing top cover is fixed on the wire fixing triangular groove through screws.

When the magnetostrictive displacement meter at the measuring point deforms, the magnetic ring and the waveguide rod are caused to deform in a telescopic mode, the telescopic quantity is electrically measured through the magnetic induction element head, and automation of dam deformation monitoring is achieved.

The invention relates to a monitoring method using the magnetic induction dam deformation monitoring device, which comprises the following steps:

a. respectively pouring measuring foundation piles on mountain bedrocks at two ends of the dam to form a dam body deformation measuring line;

b. pouring a wire clamping disc of a wire clamping device at the top of the measuring foundation pile, and enabling the two wire fixing triangular grooves to be located on the measuring line;

c. arranging measuring points on a dam body measuring line according to measuring requirements, and vertically or horizontally and fixedly installing a magnetostrictive displacement meter on the dam body measuring points so as to enable the magnetostrictive displacement meter and the dam body to form a deformation consistent body;

d. selecting steel wire wires with different diameters according to the length of the dam body and the number of observation points, and connecting the steel wire wires with the magnetic ring in series by penetrating the steel wire wires around the edge of the magnetic ring;

e. sleeving a magnetic ring on a waveguide rod in a magnetostrictive displacement meter, tightening and fixing a steel wire in a wire clamping device arranged at the top of a measuring foundation pile, and keeping the magnetic ring within the effective measuring range of the waveguide rod all the time;

f. and fixing the wire clamping and fixing the top cover on the wire clamping disc, starting daily measurement, wherein the telescopic deformation of the magnetostrictive displacement meters is the dam deformation displacement in the direction, and the magnetostrictive displacement meters in different directions can be installed to measure the dam displacement deformation in different directions.

The invention has the beneficial effects that: the steel wire is tightened by the measuring foundation piles arranged at the two ends of the dam body, the steel wire and the magnetic ring connected in series with the steel wire are relatively fixed points, and the final purpose of monitoring the deformation of the dam is realized by driving the relative telescopic deformation of the magnetic ring along the wave guide rod through the deformation of the dam body. The observation precision, measuring range and reliability of the current magnetostrictive displacement meter can meet the requirements of the current dam deformation monitoring specification, and the invention provides an effective way for dam deformation monitoring. The invention has simple and reliable structure principle and convenient operation, can be used for observing and measuring the deformation of the dam, meets the requirements of the deformation observation precision, the measuring range and the reliability of the dam, can be connected with an automation module to realize the measurement automation, greatly improves the measurement efficiency, and can be widely applied to the safety monitoring of the deformation of the dam.

Drawings

FIG. 1 is a schematic layout of the apparatus of the present invention;

FIG. 2 is a schematic view of the structure of the wire clamping device of the present invention;

fig. 3 is a schematic view of the structure of the magnetostrictive displacement gauge of the device of the present invention.

In the figure: 1-measuring foundation piles; 2-a wire clamping device; 21-wire clamping disc; 22-clamping the wire to fix the top cover; 23-fixing a triangular groove; 3-a steel wire; 4-a magnetostrictive displacement gauge; 41-magnetic sensing element head; 42-waveguide rod; 5-a magnetic ring; 6-dam body measuring point.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the magnetic induction dam deformation monitoring device of the present invention comprises a measuring foundation pile 1, a wire clamping device 2, a steel wire 3, a magnetostrictive displacement meter 4 and a magnetic ring 5; the steel wire 3 is connected with the magnetic ring 5 in series, tightened by the wire clamping device 2 and fixed on the measuring foundation piles 1 of the mountain bodies at two ends of the dam, the magnetostrictive displacement meters 4 are vertically or horizontally arranged on each measuring point of the dam measuring line, and the magnetostrictive displacement meters 4 and the steel wire 3 are positioned on the same plane or are orthogonal so that the magnetostrictive displacement meters 4 and the dam body form a deformation consistent body; the magnetic ring 5 is sleeved on the waveguide rod 42 of the magnetostrictive displacement meter 4 and keeps freely stretching; the wire clamping device 2 comprises a wire clamping disc 21, a wire clamping fixing top cover 22 and a wire fixing triangular groove 23; the wire clamping disc 21 is poured on the top of the foundation pile 1 with two ends measured, the steel wire 3 penetrates through the wire fixing triangular groove 23 formed in the wire clamping disc 21 and then is fixed to the wire clamping disc 21, and the wire clamping fixing top cover 22 is fixed to the wire fixing triangular groove 23 through screws.

When the magnetostrictive displacement meter 4 at the measuring point deforms, the magnetic ring 5 and the waveguide rod 42 are caused to deform in a telescopic mode, the telescopic amount is electrically measured through the magnetic sensing element head 41, and automation of dam deformation monitoring is achieved.

The invention relates to a monitoring method using the magnetic induction dam deformation monitoring device, which comprises the following steps:

a. respectively pouring measuring foundation piles 1 on mountain bedrocks at two ends of the dam to form a dam body deformation measuring line;

b. pouring a wire clamping disc 21 of the wire clamping device 2 on the top of the measuring foundation pile 1, and enabling two wire fixing triangular grooves 23 to be located on a measuring line;

c. arranging measuring points on a dam body measuring line according to measuring requirements, and vertically or horizontally fixedly installing a magnetostrictive displacement meter 4 on a dam body measuring point 6 so as to enable the magnetostrictive displacement meter 4 and the dam body to form a deformation consistent body;

d. selecting steel wire wires 3 with different diameters according to the length of the dam body and the number of observation points, penetrating the steel wire wires 3 into the edge of the magnetic ring 5, and connecting the steel wire wires 3 with the magnetic ring 5 in series;

e. sleeving the magnetic ring 5 on a waveguide rod 42 in the magnetostrictive displacement meter 4, tightening the steel wire 3 and fixing the steel wire in a wire clamping device 2 arranged at the top of the measuring foundation pile 1, and keeping the magnetic ring 5 within the effective range of the waveguide rod 42 all the time;

f. fixing the wire clamping fixing top cover 22 on the wire clamping disc 21, starting daily measurement, wherein the stretching deformation of the magnetostrictive displacement meters 4 is the dam deformation displacement in the direction, and the magnetostrictive displacement meters 4 in different directions can be installed to measure the dam displacement deformation in different directions.

The above embodiments are described in connection with the accompanying drawings, but the invention is not limited thereto, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the invention, and these changes and modifications are within the scope of the invention.