JP2010197216A - Fall predictor and fall prediction method of base rock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fall prediction method using a fall predictor installed in a base rock, predicting a fall of the base rock, eliminating a labor hour for correctly and horizontally installing the fall predictor when it is installed, and simply observing the base rock in the dark night without a lighting apparatus. <P>SOLUTION: In the fall predictor 1, a liquid 5 and a gas 6 are not mixed, and sealed in a spherical casing 2. A phosphorescent pigment is mixed in the liquid 5. A longitude mark and a latitude mark are formed on the casing 2. The fall predictor 1 is installed in the base rock R. A change in the longitude and latitude on a surface of the liquid can be observed from a remote site in the night by utilizing a light emitted from the phosphorescent pigment. When the change reaches a preset value, it predicts that there is a possibility that the base rock falls. <P>COPYRIGHT: (C)2010,JPO&INPIT

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 rock collapse is difficult to predict, and regular staff members patrol to observe the condition of the rock and find the rock likely to collapse. 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 rock fall predictor is characterized in that the boundary line between the liquid and the gas can be observed by the light emitted from the phosphorescent pigment.
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 rock fall predictor, wherein the fall predictor does not intermix with a hollow casing, a mark of longitude and latitude applied to the casing, and enclosed in the casing, It consists of two types of fluids with different specific gravities and a phosphorescent pigment applied to the casing, and is configured so that the boundary between the two fluids in the fall predictor fixed to the rock can be observed by the light emitted from the phosphorescent pigment. It is a rock fall predictor characterized by
A fourth aspect of the present invention is the rock fall predictor according to the second aspect, wherein the phosphorescent pigment is applied to a fluid side surface where the specific gravity of the casing is light.
A fifth aspect of the present invention is the rock fall predictor according to the second aspect, wherein the phosphorescent pigment is applied to a fluid side surface where the specific gravity of the casing is heavy.
The invention of claim 6 is characterized in that one of the two types of fluid is gas and the other is liquid, and a light reflecting member is mixed in the liquid. It is a rock fall predictor as described.
The invention of claim 7 is a rock fall prediction method, 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 A fall predictor consisting of mixed phosphorescent pigments is fixed to the rock, and the latitude and longitude of the fluid gas in the fixed fall predictor can be observed by the light emitted from the phosphorescent pigment. This is a rock fall prediction method characterized by this.
The invention according to claim 8 is a method for predicting rock collapse, and includes two types of hollow casing, a mark of longitude and latitude applied to the casing, and a specific gravity which is not intermingled with each other and enclosed in the casing. A collapsing predictor consisting of a fluid and a phosphorescent pigment applied to the casing is fixed to the bedrock, and the longitude and latitude of the two fluids in the fixed predictor can be observed by the light emitted from the phosphorescent pigment. It is a rock fall prediction method characterized by being composed of

According to the invention of claim 1 or 7, 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.
By setting it as invention of Claim 2, the light discharge | released from a luminous pigment is irregularly reflected by the light reflection member, and the visual recognition of a boundary surface becomes easier.
According to the invention of claim 3 or 8, it is not necessary to attach it to the bedrock horizontally, and the boundary surface between the two fluids can be observed by light emitted from the phosphorescent pigment even at night and from a distance. This makes it easier to predict rock collapse.
According to the invention of claim 4, 5 or 6, the boundary between the two fluids can be observed from a remote place at night by the light from the phosphorescent pigment applied to the casing, so that the ground collapse can be predicted. Become more certain.

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 predictor which shows 2nd, 3rd embodiment, 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. In the casing 2, the meridian 3 and the latitude line 4, and the longitude 3a and the latitude 4a are formed by appropriate mark forming means such as printing or notching (crease marking), and the casing 2 has the liquid 5 and Air 6 is filled in half of the internal volume.

  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. A pigment that can be repeatedly emitted over a long period of time, for example, a known compound described in Japanese Patent No. 4212101 and JP-A 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 can be more easily observed. 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 and the longitude 3a and latitude 4a of the latitude 4 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.

The present invention is not limited to the one in which the phosphorescent pigment is mixed into the liquid as in the above embodiment, and the phosphorescent pigment 7 is contained on the surface or the inner surface of the casing 2 as shown in FIG. In this case, it may be applied to the top surface on the gas side (see (A) in the same figure), or conversely applied to the bottom surface on the liquid side ((B) in the same figure). Reference).
Further, the two kinds of fluids to be enclosed are not limited to gas and liquid, and are not particularly limited as long as they have different specific gravities and can be distinguished from each other without intermingling with each other, such as water and oil. It may be a thing. And in order to recognize a boundary line more reliably, the thing from which the color of two types of fluids differed is preferable.
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.
Furthermore, as the indication of longitude and latitude, in the above-described embodiment, the longitude and latitude are drawn on a translucent material, but conversely, the surface of the casing 2 is blacked to make it opaque. In addition, the present invention can be implemented by enabling observation through the longitude and latitude from which the internal fluid is cut out as a cut-out longitude and latitude.

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

Claims (8)

  A rock fall predictor comprising a hollow casing, a longitude and latitude mark applied to the casing, liquids and gases enclosed in the casing, and a mixture of liquids and gases that are not mixed with each other. Rock fall, characterized in that the boundary between the liquid and gas in the fall predictor fixed to the bedrock can be observed by the light emitted from the phosphorescent pigment. Predictor.   The rock fall predictor according to claim 1, wherein the liquid is mixed with a light reflecting member.   A rock fall predictor comprising two types of fluids having a hollow casing, a mark of longitude and latitude applied to the casing, and two specific fluids that are enclosed in the casing and are not mixed with each other and have different specific gravity And a phosphorescent pigment applied to the casing, wherein the boundary between the two fluids in the collapsing predictor fixed to the bedrock can be observed by the light emitted from the phosphorescent pigment. Rock fall prediction device.   The rock fall predictor according to claim 2, wherein the phosphorescent pigment is applied to a fluid side surface having a light specific gravity of the casing.   3. The rock fall predictor according to claim 2, wherein the phosphorescent pigment is applied to a side surface of the fluid having a high specific gravity of the casing.   The rock fall predictor according to any one of claims 3 to 5, wherein one of the two types of fluid is a gas and the other is a liquid, and the liquid is mixed with a light reflecting member. .   A rock fall prediction method 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 rock fall predictor is fixed to the bedrock, and the latitude and longitude that the boundary line with the fluid gas in the fixed fall predictor passes through can be observed by the light emitted from the phosphorescent pigment. Collapse prediction method.   A method for predicting rock collapse, which is applied to a casing, a hollow casing, a longitude and latitude mark applied to the casing, two kinds of fluids enclosed in the casing and having different specific gravity, and not mixed with each other. A collapsing predictor consisting of a phosphorescent pigment is fixed to the rock, and the longitude and latitude through which the boundary line of two fluids in the fixed predictor passes can be observed by the light emitted from the phosphorescent pigment. A rock fall prediction method that is characteristic.

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