CN203298746U - A vertical multipoint displacement meter apparatus for safety monitoring in geotechnical engineering - Google Patents
A vertical multipoint displacement meter apparatus for safety monitoring in geotechnical engineering Download PDFInfo
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- CN203298746U CN203298746U CN201320343285XU CN201320343285U CN203298746U CN 203298746 U CN203298746 U CN 203298746U CN 201320343285X U CN201320343285X U CN 201320343285XU CN 201320343285 U CN201320343285 U CN 201320343285U CN 203298746 U CN203298746 U CN 203298746U
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Abstract
The utility model discloses a vertical multipoint displacement meter apparatus for safety monitoring in geotechnical engineering. The apparatus comprises an exhaust pipe, a far-end anchor head, a near-end anchor head, and double grout pipes. A first grout pipe in the displacement meter is installed at a position one meter from an opening. A second grout pipe in the displacement meter is installed at the far-end anchor head. The exhaust pipe is one meter longer than the far-end anchor head. A plurality of side holes are disposed on the exhaust pipe and at positions 20cm far from the top of the exhaust pipe. Holes are drilled according to different stratum conditions and the displacement meters are installed at multiple points. The vertical multipoint displacement meter apparatus is especially suitable for monitoring the stratum displacement of vertical-directional holes and upwardly-inclined holes. The vertical multipoint displacement meter apparatus is used for displacement safety monitoring in civil engineering construction such as water conservancy and hydropower, roads, and railways, and effectively resolves a problem of insufficient grouting of the multipoint displacement meter under different stratum conditions. The apparatus is capable of really manifesting the stratum deformation of a measured position and provides reliable monitoring data for buildings.
Description
Technical field
The utility model belongs to the Geotechnical Monitoring technical field, is specifically related to apply to the vertical multi-point displacement counter device in the civil engineering constructions such as water conservancy and hydropower and highway, railway.
Background technology
Multipoint displacement meter is a kind of civil engineerings such as water conservancy and hydropower and highway, railway construction that apply to, side slope and underground chamber rock stratum are carried out the instrument of displacement monitoring, as transmitting bar Embedment and installation and slip casting process, traditional grouting process adopts single Grouting Pipe, aperture or hole-bottom slurry-injection, small-bore gas outlet.Find in actual applications, the measured numerical value majority of far-end measuring point does not conform to the actual displacement amount.According to practical application and data analysis for many years, its reason is that the slip casting of far-end measuring point is not full, more difficult the filling with of mounting hole that particularly crown hole and the angle that is inclined upwardly are larger, the anchoring of measuring point anchor head is unreliable, thereby cause Monitoring Data abnormal, cause erroneous judgement, affect construction safety.
Summary of the invention
The purpose of this utility model is the not full problem of multipoint displacement meter slip casting under the different rock-layers condition that effectively solves, provide a kind of Geotechnical Monitoring vertical multi-point displacement counter device, make the rock mass deformation at the tested position of detection energy actual response, for buildings provides reliable Monitoring Data.
The technical solution of the utility model is: the vertical multi-point displacement counter device that installation is set for different rock-layers condition boring multiple spot is: comprise a gas outlet, far-end anchor head and near-end anchor head, two Grouting Pipe, in displacement meter, first Grouting Pipe is arranged on one meter in aperture, second Grouting Pipe is arranged on far-end anchor head place, gas outlet exceeds the first rice of distal anchor, and beats several side openings in the 20cm of gas outlet top.
The vertical multi-point displacement counter device of Geotechnical Monitoring of the present utility model adopts two Grouting Pipe, is specially adapted to vertical direction and is inclined upwardly hole strata displacement monitoring.Effectively solve under various abominable working environments and Various Complex geologic condition the problem that multipoint displacement meter slip casting is not full.The utility model applies to the displacement safety monitoring in the civil engineering constructions such as water conservancy and hydropower and highway, railway, improves the accuracy of Monitoring Data, predicts in advance the displacement trend of rock stratum, in order to make the corresponding precautionary measures.Avoid the collapse generation of field boundary accident of buildings.
Description of drawings
Fig. 1 is that Traditional Method is installed the displacement meter schematic diagram.
Fig. 2 is the vertical multi-point displacement counter device of Geotechnical Monitoring of the present utility model schematic diagram.
Fig. 3 is tunnel boring schematic diagram.
In figure, 1-far-end anchor head, 2-near-end anchor head, 3-displacement meter sensor, 4-Grouting Pipe, 5-gas outlet, first Grouting Pipe of 6-, second Grouting Pipe of 7-, A-crown hole (upright opening), B-tunnel, C-lateral aperture, the D-inclined hole that dips down, the E-hole that is inclined upwardly.
Embodiment
As shown in Figure 3, tunnel rockhole multiple spot is arranged the displacement counter device is installed, comprise horizontal direction, vertical direction, be inclined upwardly, downward-slopingly carry out the strata displacement monitoring.For upright opening and the hole that is inclined upwardly, with the vertical multi-point displacement counter device of Geotechnical Monitoring of the present utility model (as shown in Figure 2), it comprises a gas outlet 5, far-end anchor head 1 and near-end anchor head 2, two Grouting Pipe, in displacement meter, first Grouting Pipe 6 is arranged on one meter in aperture, and second Grouting Pipe 7 is arranged on far-end anchor head place, gas outlet exceeds the first rice of distal anchor, and beats several side openings in the 20cm of gas outlet top.Described Grouting Pipe and gas outlet all adopt 6 to be in charge of, and ensure that exhaust is abundant, guarantee into slurry smooth.
During Specific construction, the pvc pipe that adopts soft durometer to be fit to, the intercepting suitable length, by relevant position, with the displacement meter colligation together, synchronously send in mounting hole.Three pipes outside aperture are carried out respectively mark, add grout filling gap, aperture with geotextile, then use sand-cement slurry plugging hole mouth.After solidifying, aperture sand gets final product slip casting.
Use first Grouting Pipe during slip casting as far as possible, while annotating to second Grouting Pipe overfall, can second Grouting Pipe of first shutoff, then continue to use first Grouting Pipe slip casting to the gas outlet overfall.For preventing underground water dilution slurries in hole, when the gas outlet overfall, must take a sample to check from exhaust pipe mouth, after the slurry water gray scale of discharge is identical with the slurry water gray scale of the system of mixing, could the shutoff gas outlet.
Because underground crack, various rock stratum differs greatly, for avoiding also will continuing slip casting because underground crack spillage causes mounting hole slip casting not full after the gas outlet shutoff, until more than grouting pressure reaches 1Mpa, and under packing state the shutoff Grouting Pipe.
Because displacement meter transmission bar temperature influence can produce expand with heat and contract with cold, after slip casting finishes, measure again initial value after the slurry water heat-transmission is stable, when initial value measures, need survey continuously to read three times, average as initial value.
Claims (2)
1. vertical multi-point displacement counter device of Geotechnical Monitoring, it is characterized in that this device comprises a gas outlet, far-end anchor head and near-end anchor head, two Grouting Pipe, in displacement meter, first Grouting Pipe is arranged on one meter in aperture, second Grouting Pipe is arranged on far-end anchor head place, and gas outlet exceeds the first rice of distal anchor, and beats several side openings in the 20cm of gas outlet top.
2. the vertical multi-point displacement counter device of Geotechnical Monitoring according to claim 1, is characterized in that described Grouting Pipe and gas outlet all adopt 6 to be in charge of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320343285XU CN203298746U (en) | 2013-06-17 | 2013-06-17 | A vertical multipoint displacement meter apparatus for safety monitoring in geotechnical engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320343285XU CN203298746U (en) | 2013-06-17 | 2013-06-17 | A vertical multipoint displacement meter apparatus for safety monitoring in geotechnical engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203298746U true CN203298746U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320343285XU Expired - Fee Related CN203298746U (en) | 2013-06-17 | 2013-06-17 | A vertical multipoint displacement meter apparatus for safety monitoring in geotechnical engineering |
Country Status (1)
| Country | Link |
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| CN (1) | CN203298746U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604889A (en) * | 2017-11-02 | 2018-01-19 | 上海长凯岩土工程有限公司 | Multipoint displacement meter expands anchor head and its application method |
| CN110648504A (en) * | 2019-09-30 | 2020-01-03 | 中南大学 | Landslide disaster monitoring device and method |
-
2013
- 2013-06-17 CN CN201320343285XU patent/CN203298746U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604889A (en) * | 2017-11-02 | 2018-01-19 | 上海长凯岩土工程有限公司 | Multipoint displacement meter expands anchor head and its application method |
| CN107604889B (en) * | 2017-11-02 | 2023-12-19 | 上海长凯岩土工程有限公司 | Multi-point displacement meter expansion anchor head and use method thereof |
| CN110648504A (en) * | 2019-09-30 | 2020-01-03 | 中南大学 | Landslide disaster monitoring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20190617 |