JP5227216B2 - Rock fall predictor and fall prediction method - Google Patents

Description

  The present invention belongs to the technical field of a rock fall predictor and a fall predicting method that are likely to collapse in places involved in human life such as railways, roads, and private houses.

Today, as one of the natural disasters, there is a case where the bedrock collapses in places that are involved in human life such as railways, roads, and private houses. Such a rock fall is difficult to predict, and regular staff members patrol to observe the condition of the rock and find a rock that is likely to fall. There is a problem that prediction of such a collapse has individual differences depending on the staff, and it is difficult to predict accurately.
Therefore, a sphere was placed on the surface of the table placed horizontally on the bedrock, and when the table was tilted as the bedrock was tilted, the sphere fell from the table to predict the collapse. The thing is known (for example, patent document 1).

JP 2008-170426 A

  However, in the above-mentioned conventional one, the mounting table must be installed on the bedrock accurately and horizontally, and it is necessary to cover the mounting table firmly so as not to be affected by wind and rain. In addition, there is a problem that installation work takes time. Moreover, the above-mentioned conventional devices have a problem that they cannot be observed without a lighting device such as a flashlight in a dark place such as at night, and there is a problem that the present invention does not solve.

The present invention was created for the purpose of solving these problems in view of the above situation, and the invention of claim 1 is a rock fall predictor, which is a fall predictor, In a collapsing predictor consisting of a hollow casing, a longitude and latitude mark applied to the casing, a liquid and a gas that are not mixed with each other and a phosphorescent pigment mixed in the liquid, and fixed to the rock The boundary line between the liquid and the gas is observed by the light emitted from the phosphorescent pigment , and the casing surface is made opaque, while the casing surface is formed by scoring. The rock fall predictor is characterized in that the boundary line can be observed through the measured graticule .
The invention according to claim 2 is the rock fall predictor according to claim 1, wherein the liquid is mixed with a light reflecting member.
The invention of claim 3 is a method for predicting rock collapse, comprising a hollow casing, a longitude and latitude mark applied to the casing, a gas and a liquid enclosed in the casing and not intermingled with each other, and a liquid the collapse predictor consisting of contaminating the phosphorescent pigment is fixed to the rock, the observation of the longitude and latitude of the boundary line passes through the liquid and the gas in the collapse predictor said fixed to allow the light emitted from the phosphorescent pigment The rock fall prediction method is characterized in that the boundary line can be observed through graticules formed by scoring on the casing surface while making the casing surface opaque. .

According to the invention of claim 1 or 3 , it is not necessary to attach it to the bedrock in an exact horizontal manner, and the boundary surface with the liquid gas is formed by light emitted from the phosphorescent pigment even at night and from a distance. Being able to observe makes it easier to predict rock collapse.
Billing With the invention of claim 2, the light being light reflecting member ing easier visual recognition of the irregular reflection boundary surface by the release from the phosphorescent pigment.

It is a front view of the rock fall predictor which shows 1st embodiment. It is a front view which shows the state which installed the collapse predictor in the bedrock. It is a perspective view of a collapse predictor. (A) (B) is the perspective view seen from the top side of the rock fall prediction device which shows a reference example, and the perspective view seen from the bottom side.

Next, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a rock fall predictor. The fall predictor 1 uses a hollow sphere as a casing 2, and the casing 2 is made of a transparent or translucent resin material. And in the casing 2, meridians 3 and parallels 4, and with the longitude 3a and latitude 4a are formed by cutout (score), in the casing 2, a liquid 5 and air 6 is an internal capacity of 1 / Filled in two.

  The liquid is mixed with fine particles of a phosphorescent pigment. Phosphorescent pigments are excited by sunlight or fluorescent light, especially ultraviolet light, absorb the energy, convert the absorbed energy into visible light, and gradually emit light even after excitation stops after dark. It is a pigment that can repeatedly emit light over a long period of time, and a known compound as described in, for example, Japanese Patent No. 4212101 and Japanese Patent Application Laid-Open No. 2000-104001 can be employed.

  Moreover, although water can be used as the liquid, a liquid having a high boiling point such as glycerin can be used. If a light reflecting member made of fine powder such as pearls or oyster shells or fine powder of metal such as gold or silver is placed in this material, the interface between the liquid and air becomes easier to observe. The fine powder of the light reflecting member is preferably milky and exhibits a so-called Tyndall phenomenon that diffusely reflects. Such a light reflecting member is preferably a fine powder that does not precipitate together with the phosphorescent pigment. Of course, an emulsifier (surfactant) may be added to the liquid as a consideration for preventing precipitation.

  The collapsing predictor 1 configured in this way is fixed (adhered) to the rock mass R estimated to be collapsing with the adhesive 8. In this case, the liquid 5 passes through the equator. It is preferable to fix the casing 2 to the wall. For the casing 2 thus fixed, the meridian 3 where the liquid 5 crosses, the longitude 3a of the latitude 4 and the latitude 4a are recorded accurately. Such a record is regularly or irregularly observed by an attendant when there is an abnormal weather such as a typhoon or heavy rain, but the interface between the liquid 5 and the air 6 is released from the phosphorescent pigment. It can be recognized at night by light and is recorded. Regarding the records observed in this way, if changes in the longitude and latitude that the surface of the liquid 5 (boundary with the gas 6) 5a crosses are observed, it is determined that the rock mass R is moving, and it is observed as a rock mass requiring attention For example, when it is tilted by about 5 degrees from the initial state of installation, it is assumed that the rock R is likely to collapse, and is managed to take necessary measures such as removing or reinforcing.

  In the embodiment of the present invention configured as described above, the collapsing predictor 1 is installed in the rock mass R, and the moving state of the rock mass R can be known by measuring the longitude and latitude that the surface of the liquid 5 passes over time. This observation can be performed at night by the light emitted from the phosphorescent pigment, and this observation can be performed from a distance from the night by using binoculars, etc., and when the bedrock R moves by the preset collapse prediction angle, It is possible to identify the rock R as a concern and take necessary measures. In addition, in this case, the change rate can also be known by graphing the change with time, thereby predicting the future change.

  In this way, in the embodiment of the present invention, the rock R can be predicted to collapse, but the longitude and latitude that the surface of the liquid 5 in the casing 2 passes is measured over time. At this time, it is not necessary to install the liquid 5 so that the surface of the liquid 5 is accurately oriented horizontally, and even if there is an error, observation can be performed without any problem. In addition, since the liquid 5 and the air 6 are sealed in the casing 2, there is no influence of wind and rain.

Moreover, since the phosphor 5 is mixed with the liquid 5 in this case, it is not necessary to take the lighting equipment to the site every dark night and observe it, and it can also be observed from a remote place.
In addition, in this case, the light reflecting member mixed in the liquid 5 reflects and emits light from the phosphorescent pigment, so that it becomes easier to observe.

Incidentally, a reference example of the present invention is shown in FIG. 4, this one state, and are not coated with paint containing phosphorescent pigment 7 on the surface or inner surface of the casing 2, in this case, facilities on the top surface of the gas side the ones (see FIG. (a)), also Ru can also be implemented as being applied to the bottom surface of the liquid-side reversed (see FIG. (B)).
Furthermore, the longitude and latitude are not particularly limited as long as the change in the rock posture can be observed, and it is needless to say that the latitude and longitude may be displayed in an inclined shape.
In addition, as a display of longitude and latitude , in the present invention, the surface of the casing 2 is made opaque, for example, so that it can be observed through the longitude and latitude where the internal fluid is cut out as the longitude and latitude are cut out. that it has to.

DESCRIPTION OF SYMBOLS 1 Collapse predictor 2 Casing 3 Meridian 3a Longitude 4 Latitude 4a Latitude 5 Liquid 6 Gas 7 Luminescent pigment

Claims (3)

A rock fall predictor comprising a hollow casing, a longitude and latitude mark applied to the casing, a liquid and a gas that are not mixed with each other, and a liquid mixed in the liquid. The boundary between the liquid and the gas in the fall predictor fixed to the bedrock can be observed by the light emitted from the phosphorescent pigment, and the surface of the casing is not covered. A rock fall predictor characterized in that the boundary line can be observed through graticules formed on the surface of the casing by ruled lines while being transparent .   The rock fall predictor according to claim 1, wherein the liquid is mixed with a light reflecting member. A method for predicting rock collapse, comprising a hollow casing, a longitude and latitude mark applied to the casing, a gas and a liquid enclosed in the casing and not intermingled with each other, and a phosphorescent pigment mixed in the liquid The fall predictor is fixed to the rock, and the latitude and longitude of the boundary between the liquid and gas in the fixed fall predictor can be observed by the light emitted from the phosphorescent pigment, and the surface of the casing is A rock fall prediction method characterized in that the boundary line can be observed through graticules formed by ruled lines on the surface of the casing while being opaque .

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