JP2592210B2 - Method and apparatus for measuring inner surface shape of underground hole - Google Patents
Method and apparatus for measuring inner surface shape of underground holeInfo
- Publication number
- JP2592210B2 JP2592210B2 JP13339393A JP13339393A JP2592210B2 JP 2592210 B2 JP2592210 B2 JP 2592210B2 JP 13339393 A JP13339393 A JP 13339393A JP 13339393 A JP13339393 A JP 13339393A JP 2592210 B2 JP2592210 B2 JP 2592210B2
- Authority
- JP
- Japan
- Prior art keywords
- section
- excavator
- distance
- distance meter
- underground hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地中孔の内面形状測定
方法及び装置に関し、とくに掘削機の地中位置及び掘削
孔の形状を測定し、掘削の精度及び仕上り形状を把握
し、さらに土砂の崩落をも検知できる地中孔の内面形状
測定方法及び装置に関する。本発明をコンピュータと併
用すれば、掘削状況のデータをリアルタイムで掘削機の
操作員に提供し、操作の質の向上に役立てることができ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring the inner surface shape of an underground hole, and more particularly to measuring the underground position of an excavator and the shape of an excavation hole to grasp the excavation accuracy and finished shape. The present invention relates to a method and an apparatus for measuring the inner surface shape of an underground hole that can detect collapse of earth and sand. When the present invention is used in combination with a computer, excavation situation data can be provided to an excavator operator in real time, which can be used to improve the quality of operation.
【０００２】[0002]
【従来の技術】地中孔の内面形状の測定には、掘削機の
深さ位置を深度計で連続的に測定すると共に掘削機に搭
載した傾斜計により傾斜を連続的に測定するいわゆるデ
ッドレコニング法が従来使われている。2. Description of the Related Art In order to measure the inner surface shape of an underground hole, so-called dead reckoning in which the depth position of an excavator is continuously measured by a depth gauge and the inclination is continuously measured by an inclinometer mounted on the excavator. The law is traditionally used.
【０００３】[0003]
【発明が解決しようとする課題】上記デッドレコニング
法では、傾斜計と深度計の出力のみに依存するので、な
んらかの原因で掘削機等の機械が水平移動した場合に、
大きな誤差の原因となる欠点がある。また、従来の方法
では、地中孔の中心線の軌跡を測定するものの地中孔の
内面の形状、例えば土砂の崩落による凹み等の検出は困
難であった。In the above-mentioned dead reckoning method, since only the outputs of the inclinometer and the depth gauge are used, when a machine such as an excavator moves horizontally for some reason,
There are drawbacks that cause large errors. Further, in the conventional method, although the locus of the center line of the underground hole is measured, it is difficult to detect the shape of the inner surface of the underground hole, for example, a dent due to the collapse of earth and sand.
【０００４】従って、本発明の目的は、掘削しながら測
定できる地中孔の内面形状測定方法及び装置を提供する
にある。Accordingly, it is an object of the present invention to provide a method and an apparatus for measuring the inner surface shape of an underground hole which can be measured while excavating.
【０００５】[0005]
【課題を解決するための手段】図１を参照するに、本発
明による地中孔の内面形状測定方法は、傾斜計７付き掘
削機３上の間隔ａを隔てた前端部と後端部にそれぞれ距
離計9f、9rを取付け、地中孔１の既知位置における既知
形状の第１断面P1と前記掘削機３の後端部距離計9rとを
対向させ、前記第１断面P1に対する前記後端部距離計9r
の距離を前記後端部距離計9rで測定し、前記測定の結果
と前記傾斜計７の出力と前記間隔ａとから前記第１断面
P1に対する前記前端部距離計9fの位置を求め、前記前端
部距離計9fに対向する前記地中孔１の第２断面P2の前記
前端部距離計9fに対する距離を前記前端部距離計9fで測
定することにより前記第１断面P1に関する前記第２断面
P2の位置を求め、前記掘削機３を前記間隔ａだけ進行さ
せて前記後端部距離計9rを前記地中孔１の第２断面P2に
対向させてこれを新しい第１断面とし、前記新しい第１
断面に対する前記進行後の前端部距離計9f対向の新しい
第２断面の位置を前記測定により求めるサイクルを反復
してなるものである。Referring to FIG. 1, a method for measuring the inner surface shape of an underground hole according to the present invention is described in which a front end portion and a rear end portion of an excavator 3 with an inclinometer 7 are separated by a distance a. The distance meters 9f and 9r are respectively attached, and the first section P1 of a known shape at the known position of the underground hole 1 and the rear end distance meter 9r of the excavator 3 are opposed to each other. Part distance meter 9r
The distance measured by the rear end portion rangefinder 9r, the first section from the result output of the inclinometer 7 of the measurement and the distance a
Obtain the position of the front end distance meter 9f for P1, measure the distance to the front end distance meter 9f of the second section P2 of the ground hole 1 facing the front end distance meter 9f in the front end distance meter 9f The second section with respect to the first section P1
The position of P2 is determined, the excavator 3 is advanced by the distance a, the rear end distance meter 9r is opposed to the second section P2 of the underground hole 1, and this is set as a new first section. First
A cycle in which the position of a new second cross section facing the front end distance meter 9f after the progression with respect to the cross section is determined by the measurement is repeated.
【０００６】本発明による地中孔の内面形状測定装置
は、傾斜計７と前端部距離計9fとその前端部距離計9fか
ら掘削方向に間隔ａだけ隔った後端部距離計9rとを有す
る掘削機３；前記傾斜計７と後端部距離計9rと前端部距
離計9fとに接続されて、前記掘削機３により掘削される
地中孔１の前記後端部距離計9rに対向する第１断面P1に
関する前記地中孔１の前記前端部距離計9fに対向する第
２断面P2の位置を算出する内面形状算出手段30；並びに
前記掘削機３に接続されて前記掘削機３を前記間隔ａだ
け前進させる前進制御手段32を備えてなる構成を有す
る。The apparatus for measuring the inner surface shape of an underground hole according to the present invention comprises an inclinometer 7, a front end distance meter 9f, and a rear end distance meter 9r separated from the front end distance meter 9f by a distance a in the excavation direction. Excavator 3 having: connected to the inclinometer 7, rear end distance meter 9r, and front end distance meter 9f, facing the rear end distance meter 9r of the underground hole 1 excavated by the excavator 3. An inner surface shape calculating means 30 for calculating a position of a second section P2 facing the front end distance meter 9f of the underground hole 1 with respect to the first section P1 to be connected; and connecting the excavator 3 to the excavator 3 It has a configuration provided with forward control means 32 for moving forward by the interval a.
【０００７】好ましくは、地中孔１の入口近くの前記間
隔ａに相当する範囲内に適当ピッチｐ（ｐ＜ａ、図示せ
ず）の多数の上記第１平面P1を設け、掘削機３をそのピ
ッチｐで下降させながら前記測定サイクルを反復し、地
中孔１の内面形状をピッチｐで計測する。理論的には、
地中孔１の入口近くの上記間隔ａに相当する範囲内の内
面形状を全て既知とすることにより、前記ピッチｐ＝０
として地中孔１の内面形状を連続的に測定することがで
きる。Preferably, a large number of the first planes P1 having an appropriate pitch p (p <a, not shown) are provided in a range corresponding to the distance a near the entrance of the underground hole 1, and the excavator 3 is mounted. The measurement cycle is repeated while descending at the pitch p, and the inner surface shape of the underground hole 1 is measured at the pitch p. In theory,
By making all the inner surface shapes within a range corresponding to the above-mentioned interval a near the entrance of the underground hole 1 known, the pitch p = 0
As a result, the inner surface shape of the underground hole 1 can be continuously measured.
【０００８】さらに好ましくは、前記距離計9f、9rを超
音波距離センサーとする。[0008] More preferably, the distance meters 9f and 9r are ultrasonic distance sensors.
【０００９】[0009]
【作用】図３の説明図及び図４の流れ図に従って作用を
説明する。図３の例では、前端部距離計9f及び後端部距
離計9rが掘削機３の対向側面上に設けられており、地中
孔１の内面10と掘削機３の表面との間の距離を測定す
る。ただし、本発明の前端部距離計9f及び後端部距離計
9rは、各距離計9f、9rとそれぞれに対向する地中孔１の
断面との間の距離を測定できれば足りるので、図３の例
に限定されるものではない。計測が開始されると、図４
のステップ101で、掘削機３上の後端部距離計9rを図３
に示す地中孔１の既知位置の第１断面P1に対向させる。
この場合、第１断面P1の位置は、例えば深度計５で測定
される既知深さ（図示せず）と、計画中心線Ｃから第１
断面P1における地中孔１の内面までの既知距離Ｘr1、Ｘ
l1とによって定まる。図３の場合、地中孔１の幾何学的
中心は、計画中心線Ｃから次式で与えられるΔＸ1だけ
離れている。 ΔＸ1＝｜Ｘr1−Ｘl1｜／２ ……(1)The operation will be described with reference to the explanatory diagram of FIG. 3 and the flowchart of FIG. In the example of FIG. 3, the front end distance meter 9f and the rear end distance meter 9r are provided on the opposing side surface of the excavator 3, and the distance between the inner surface 10 of the underground hole 1 and the surface of the excavator 3 is provided. Is measured. However, the front end distance meter 9f and the rear end distance meter of the present invention
9r is not limited to the example of FIG. 3 because it is sufficient to measure the distance between each of the distance meters 9f and 9r and the cross section of the ground hole 1 facing each. When measurement is started, FIG.
In step 101, the rear end distance meter 9r on the excavator 3 is
At the known position of the underground hole 1 shown in FIG.
In this case, the position of the first section P1 is, for example, a known depth (not shown) measured by the depth gauge 5 and the first position from the planned center line C.
Known distances X r1 , X to the inner surface of underground hole 1 in section P1
It is determined by l1 . In the case of FIG. 3, the geometric center of the underground hole 1 is separated from the planned center line C by ΔX 1 given by the following equation. ΔX 1 = | X r1 −X l1 | / 2 (1)
【００１０】またステップ101において、第１断面P1の
位置における地中孔１の内面10と掘削機３の対向側面上
の後端部距離計9rとの距離ｘr1、ｘl1を前記後端部距離
計9rで測定する。さらに、後端部距離計9rと前端部距離
計9fとの間隔ａだけ第１断面P1から離れた位置、即ち図
３における第２断面P2における地中孔１の内面10と掘削
機３の両側面上の前端部距離計9fとの距離ｘr2、ｘl2を
前記前端部距離計9fで測定する。In step 101, distances x r1 and x l1 between the inner surface 10 of the underground hole 1 at the position of the first section P1 and the rear end distance meter 9r on the opposite side surface of the excavator 3 are determined by the rear end. Measure with a distance meter 9r. Further, a position separated from the first section P1 by a distance a between the rear end distance meter 9r and the front end distance meter 9f, that is, the inner surface 10 of the underground hole 1 and the both sides of the excavator 3 in the second section P2 in FIG. The distances x r2 and x l2 from the front end distance meter 9f on the surface are measured by the front end distance meter 9f.
【００１１】ステップ102ないし104で、既知の第１断面
P1及び第２断面P2に関する距離測定値を内面形状計算手
段30へ入力する。即ち、ステップ102で例えば深度計５
からの深さ（図示せず）情報を、ステップ103で既知距
離情報（Ｘl1、Ｘr1、ΔＸ1）、後端部距離計9rで測定
した距離情報（ｘr1、ｘl1）、前端部距離計9rで測定し
た距離情報（ｘr2、ｘl2）及び後端部距離計9rと前端部
距離計9fとの間隔ａを、ステップ104で傾斜計７からの
鉛直に対する掘削機３の傾斜角θの情報をそれぞれ内面
形状計算手段30へ入力する。In steps 102 to 104, a known first cross section
Distance measurement values for P1 and the second cross section P2 are input to the inner surface shape calculation means 30. That is, in step 102, for example, the depth gauge 5
Information (X 11 , X r 1 , ΔX 1 ) at step 103, distance information (x r 1 , x l 1 ) measured by the rear end distance meter 9 r , front end The distance information (x r2 , x l2 ) measured by the range finder 9r and the distance a between the rear end range finder 9r and the front end range finder 9f are determined in step 104 by the inclination angle of the excavator 3 with respect to the vertical from the inclinometer 7. The information on θ is input to the inner surface shape calculation means 30.
【００１２】掘削機３の中心を地中孔１の幾何学的中心
に一致させて掘進させる時には、後端部距離計9rの位置
における掘削機３の中心が計画中心線Ｃから次式で与え
られるΔｘ1だけ離れている。 Δｘ1＝ΔＸ1＋｜ｘr1−ｘl1｜ ……(2)When the excavator 3 is excavated with the center thereof being coincident with the geometric center of the underground hole 1, the center of the excavator 3 at the position of the rear end distance meter 9r is given from the planned center line C by the following equation. Separated by Δx 1 . Δx 1 = ΔX 1 + | x r1 −x l1 | (2)
【００１３】前端部距離計9fにおける掘削機３の中心と
計画中心線Ｃとの間のずれΔｘ2は次式で与えられる Δｘ2＝Δｘ1＋ａsinθ ……(3)The deviation Δx 2 between the center of the excavator 3 and the planned center line C in the front end distance meter 9f is given by the following equation: Δx 2 = Δx 1 + asin θ (3)
【００１４】掘削機３の両側面上に取付けた前端部距離
計9f間の距離を２ｂとすれば、図３の場合の計画中心線
Ｃから第２断面P2における地中孔１の内面までの距離Ｘ
r2、Ｘl2は次式により定まる。 Ｘr2＝ｂ＋ｘr2＋Δｘ2 ……(4) Ｘl2＝ｂ＋ｘl2−Δｘ2 ……(5)Assuming that the distance between the front end distance meters 9f mounted on both sides of the excavator 3 is 2b, the distance from the planned center line C in FIG. 3 to the inner surface of the underground hole 1 in the second section P2 is assumed. Distance X
r2 and Xl2 are determined by the following equations. X r2 = b + x r2 + Δx 2 (4) X l2 = b + x l2 -Δx 2 (5)
【００１５】上記(4)式及び(5)式における長さ（ｂ＋ｘ
r2）及び（ｂ＋ｘl2）は、前端部距離計9fに対向する地
中孔１の第２断面P2の前端部距離計9fに対する位置とし
て、前端部距離計9fによって定めることができる。ま
た、上記(4)式及び(5)式におけるΔｘ2項の符号は、図
３で前端部距離計9fの位置における掘削器３の中心が計
画中心線Ｃの左側にある場合には逆になる。The length (b + x) in the above equations (4) and (5)
r2 ) and (b + xl2 ) can be determined by the front end distance meter 9f as positions of the underground hole 1 facing the front end distance meter 9f with respect to the front end distance meter 9f of the second section P2. The sign of the term Δx 2 in the above equations (4) and (5) is reversed when the center of the excavator 3 at the position of the front end distance meter 9f is on the left side of the planned center line C in FIG. Become.
【００１６】よって、ステップ106において上記(2)式な
いし(5)式の計算をすれば、既知の第１断面P1に関する
第２断面P2の位置を、計画中心線Ｃからの第１断面P1の
中心の既知ずれΔＸ1、後端部距離計9rと前端部距離計9
fとの既知間隔ａで定まる第１断面P1と第２断面P2との
間隔、及び上記(4)、(5)式で与えらる計画中心線Ｃから
第２断面P2における地中孔１の内面までの距離Ｘr2、Ｘ
l2により表すことができる。即ち、第１断面P1及び第２
断面P2における地中孔１の内面形状を測定することがで
きる。なお、第１断面P1と第２断面P2との間隔は、掘削
機３の傾斜角θが小さい時は近似的に後端部距離計9rと
前端部距離計9fとの既知間隔ａに等しいとすることがで
きる。掘削機３の傾斜角θが大きい時にも、この間隔を
正確に算出することは比較的容易である。Accordingly, if the above equations (2) to (5) are calculated in step 106, the position of the second cross section P2 with respect to the known first cross section P1 can be determined by calculating the position of the first cross section P1 from the planned center line C. Known deviation of center ΔX 1 , rear end distance meter 9r and front end distance meter 9
f, the distance between the first cross section P1 and the second cross section P2 determined by the known distance a, and the depth of the underground hole 1 in the second cross section P2 from the planned center line C given by the above equations (4) and (5). Distance to inner surface Xr2 , X
It can be represented by l2 . That is, the first section P1 and the second section P1
The inner surface shape of the underground hole 1 at the cross section P2 can be measured. Note that the interval between the first section P1 and the second section P2 is approximately equal to the known interval a between the rear end distance meter 9r and the front end distance meter 9f when the inclination angle θ of the excavator 3 is small. can do. Even when the inclination angle θ of the excavator 3 is large, it is relatively easy to calculate this interval accurately.
【００１７】その後、図１の前進制御手段32により、掘
削機３を例えば深度計５の監視下において前記間隔ａだ
け進行させて後端部距離計9rを地中孔１の第２断面P2に
対向させてこれを新しい第１断面とし、この新しい第１
断面に対する進行後の前端部距離計9fに対向する新しい
第２断面の位置を前記測定により求めるサイクルを反復
すれば、地中孔１の内面形状を長さ方向に順次測定する
ことができる。Thereafter, the excavator 3 is advanced by the distance a under the monitoring of the depth gauge 5, for example, and the rear end distance meter 9r is moved to the second section P2 of the underground hole 1 by the advance control means 32 of FIG. Opposite this as a new first section,
By repeating the cycle of obtaining the position of the new second cross section facing the front end distance meter 9f after the progression with respect to the cross section by the above measurement, the inner surface shape of the underground hole 1 can be sequentially measured in the length direction.
【００１８】こうして、本発明の目的である「掘削しな
がら測定できる地中孔の内面形状測定方法及び装置」の
提供を達成することができる。Thus, it is possible to achieve the object of the present invention, that is, "a method and an apparatus for measuring the inner surface shape of an underground hole which can be measured while excavating".
【００１９】[0019]
【実施例】図２は本発明による地中孔の内面形状測定装
置の一実施例を示す。掘削機３は掘削櫓20からケーブル
22によって吊下げられる。この例の深度計５は、掘削櫓
20のケーブル・リール24に対するケーブル22の繰り出し
・巻戻しによって掘削機３の深度を計測する。方位計12
を掘削機３に搭載し、その方位計12の出力を内面形状計
算手段30へ供給すれば、例えば北方向などの基準方向に
関する地中孔１の内面形状を定めることができる。図４
の流れ図におけるステップ105は、方位計12の使用を示
す。図２の例では、図１の内面形状計算手段30及び前進
制御手段32をコンピュータ26のソフトウェアによって構
成し、インターフェイス28を介して、各種測定器の出力
をコンピュータ26に加えている。図４の流れ図における
ステップ107及び108は、コンピュータ26による計算結果
を表示装置に表示し、適当な記憶装置に記録できること
を示す。FIG. 2 shows an embodiment of an apparatus for measuring the inner surface shape of an underground hole according to the present invention. Excavator 3 is cabled from excavator tower 20
Hanged by 22. The depth gauge 5 in this example is
The depth of the excavator 3 is measured by paying out and rewinding the cable 22 to and from the 20 cable reels 24. Compass 12
Is mounted on the excavator 3 and the output of the compass 12 is supplied to the inner surface shape calculating means 30, whereby the inner surface shape of the underground hole 1 in a reference direction such as the north direction can be determined. FIG.
Step 105 in the flowchart of FIG. In the example of FIG. 2, the inner surface shape calculation means 30 and the advance control means 32 of FIG. 1 are constituted by software of a computer 26, and outputs of various measuring instruments are applied to the computer 26 via an interface 28. Steps 107 and 108 in the flow chart of FIG. 4 indicate that the results of the calculations by the computer 26 can be displayed on a display device and recorded in a suitable storage device.
【００２０】[0020]
【発明の効果】以上詳細に説明したように、本発明の地
中孔の内面形状測定方法及び装置は、掘削機上の間隔ａ
を隔てた前端部と後端部にそれぞれ取付けた距離計を使
うので、次の顕著な効果を奏する。As described above in detail, the method and apparatus for measuring the inner surface shape of an underground hole according to the present invention provide a method for measuring the distance a on an excavator.
Since the distance meter attached to the front end and the rear end separated from each other is used, the following remarkable effects are obtained.
【００２１】（イ）地中孔の既知断面を基準として掘削
機前端部分に対向する地中孔内面の形状を測定するの
で、掘削機の偶発的な水平移動による誤差を生じない。 （ロ）後端部距離計9rと前端部距離計9fとの間隔ａを大
きくとれば、検出すべき距離計と地中孔内面との距離の
差を大きくし、誤差を抑え正確な測定をすることができ
る。 （ハ）後端部距離計9rの数及び前端部距離計9fの数を多
くし、それらの測定データを平均処理することにより誤
差を抑えることができる。 （ニ）掘削しながら測定できるので、工程を短縮できる
と共に機械的操作の参考データを供給することができ
る。 （ホ）地中孔の入口付近に複数の既知平面を小ピッチで
多数設けることにより、地中孔の内面形状を小ピッチで
正確に測定することができる。 （ト）地中孔の内面における土砂崩落による凹み等を検
出することができる。 （チ）地中連続壁の内面形状をも測定することができ
る。(A) Since the shape of the inner surface of the underground hole facing the front end of the excavator is measured with reference to the known section of the underground hole, no error is caused by accidental horizontal movement of the excavator. (B) If the distance a between the rear end distance meter 9r and the front end distance meter 9f is increased, the difference in distance between the distance meter to be detected and the inner surface of the underground hole is increased, and errors are suppressed and accurate measurement is performed. can do. (C) The error can be suppressed by increasing the number of the rear end distance meters 9r and the number of the front end distance meters 9f and averaging the measured data. (D) Since measurement can be performed while excavating, the process can be shortened and reference data of mechanical operation can be supplied. (E) By providing a plurality of known planes at a small pitch near the entrance of the underground hole, the inner surface shape of the underground hole can be accurately measured at a small pitch. (G) It is possible to detect a depression or the like due to landslide on the inner surface of the underground hole. (H) The inner shape of the underground continuous wall can also be measured.
【図１】は、本発明の構成を示す図式的ブロック図であ
る。FIG. 1 is a schematic block diagram showing a configuration of the present invention.
【図２】は、一実施例の説明図である。FIG. 2 is an explanatory diagram of one embodiment.
【図３】は、測定原理の説明図である。FIG. 3 is an explanatory diagram of a measurement principle.
【図４】は、操作の流れ図である。FIG. 4 is a flowchart of the operation.
１ 地中孔 ３ 掘削機
５ 深度計 ７ 傾斜計 9r、9f 距離計
10 内面 12 方位計 20 掘削櫓
22 ケーブル 24 ケーブル・リール 26 コンピュータ
28 インターフェイス 30 内面形状計算手段 32 前進制御手段。1 underground hole 3 excavator
5 Depth gauge 7 Inclinometer 9r, 9f Distance meter
10 Inner surface 12 Compass 20 Drilling turret
22 Cable 24 Cable reel 26 Computer
28 Interface 30 Inner surface shape calculation means 32 Forward control means.
Claims (7)
前端部と後端部にそれぞれ距離計を取付け、地中孔の既
知位置における既知形状の第１断面と前記掘削機の後端
部距離計とを対向させ、前記第１断面に対する前記後端
部距離計の距離を前記後端部距離計で測定し、前記測定
の結果と前記傾斜計の出力と前記間隔ａとから前記第１
断面に対する前記前端部距離計の位置を求め、前記前端
部距離計に対向する前記地中孔の第２断面の前記前端部
距離計に対する距離を前記前端部距離計で測定すること
により前記第１断面に関する前記第２断面の位置を求
め、前記掘削機を前記間隔ａだけ進行させて前記後端部
距離計を前記地中孔の第２断面に対向させてこれを新し
い第１断面とし、前記新しい第１断面に対する前記進行
後の前記前端部距離計対向の新しい第２断面の位置を前
記測定により求めるサイクルを反復してなる地中孔の内
面形状測定方法。1. A distance meter is attached to a front end and a rear end of an excavator with an inclinometer at a distance a from each other, and a first section having a known shape at a known position of an underground hole and a rear end of the excavator. The distance between the rear end distance meter and the first cross section is measured by the rear end distance meter, and the distance from the measurement result, the output of the inclinometer, and the distance a is used to measure the distance between the first cross section and the distance a. 1
Obtain the position of the front end distance meter to its section, the front end distance meter the first by a distance with respect to the second section the front end rangefinder opposing the ground hole to measure at the front end rangefinder Finding the position of the second cross section with respect to the cross section, advance the excavator by the distance a, make the rear end distance meter face the second cross section of the underground hole, make this a new first cross section, A method of measuring the inner surface shape of an underground hole, comprising repeating a cycle of obtaining a position of a new second section facing the front end distance meter after the progression with respect to a new first section by the measurement.
を深度計に接続し、深度計の監視下において掘削機を上
記間隔ａだけ進行させてなる地中孔の内面形状測定方
法。2. The method according to claim 1, wherein the excavator is connected to a depth gauge and the excavator is advanced by the distance a under the monitoring of the depth gauge.
の入口近くの上記間隔ａに相当する範囲内にピッチｐ
（ｐ＜ａ）の多数の上記第１平面を設け、掘削機をその
ピッチｐで下降させながら前記測定サイクルを反復し、
地中孔の内面形状をピッチｐで測定してなる地中孔の内
面形状測定方法。3. The method according to claim 1, wherein the pitch p is within a range corresponding to the distance a near the entrance of the underground hole.
Providing a number of said first planes (p <a) and repeating said measuring cycle while lowering the excavator at its pitch p;
A method of measuring the inner surface shape of an underground hole by measuring the inner surface shape of the underground hole at a pitch p.
に方位計を設け、前記方位計の出力により定まる特定方
位に関し前記地中孔の内面形状を測定してなる地中孔の
内面形状測定方法。4. The method according to claim 1, wherein the excavator is provided with a compass, and the inner shape of the bore is measured for a specific direction determined by the output of the compass. Measuring method.
から掘削方向に間隔ａだけ隔った後端部距離計とを有す
る掘削機；前記傾斜計と後端部距離計と前端部距離計と
に接続されて、前記掘削機により掘削される地中孔の前
記後端部距離計に対向する第１断面に関する前記地中孔
の前記前端部距離計に対向する第２断面の位置及び形状
を算出する内面形状算出手段；並びに前記掘削機に接続
されて前記掘削機を前記間隔ａだけ前進させる前進制御
手段を設けてなる地中孔の内面形状測定装置。5. An excavator having an inclinometer, a front end distance meter, and a rear end distance meter separated from the front end distance meter by a distance a in an excavation direction; the inclinometer, the rear end distance meter, and the front end. A second section of the underground hole, excavated by the excavator, facing the rear end distance meter, the second section of the underground hole being opposed to the front end distance meter. An inner surface shape measuring device for an underground hole, comprising: an inner surface shape calculating means for calculating a position and a shape; and an advance control means connected to the excavator to advance the excavator by the distance a.
端部距離計及び後端部距離計を超音波距離センサーとし
てなる地中孔の内面形状測定装置。6. The apparatus according to claim 5, wherein the front end distance meter and the rear end distance meter are ultrasonic distance sensors.
削機に内面形状算出手段へ接続された方位計を設け、前
記方位計によって定まる基準方向に関する前記地中孔の
内面形状を測定してなる地中孔の内面形状測定装置。7. The measuring device according to claim 5, wherein the excavator is provided with an azimuth meter connected to inner surface shape calculation means, and measures the inner surface shape of the underground hole with respect to a reference direction determined by the azimuth meter. Underground hole shape measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13339393A JP2592210B2 (en) | 1993-06-03 | 1993-06-03 | Method and apparatus for measuring inner surface shape of underground hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13339393A JP2592210B2 (en) | 1993-06-03 | 1993-06-03 | Method and apparatus for measuring inner surface shape of underground hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06341831A JPH06341831A (en) | 1994-12-13 |
| JP2592210B2 true JP2592210B2 (en) | 1997-03-19 |
Family
ID=15103703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13339393A Expired - Lifetime JP2592210B2 (en) | 1993-06-03 | 1993-06-03 | Method and apparatus for measuring inner surface shape of underground hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592210B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469247B (en) * | 2018-03-22 | 2020-11-03 | 湖南科技大学 | Device and method for detecting pore-forming quality of ultra-long anchor cable in karst area |
-
1993
- 1993-06-03 JP JP13339393A patent/JP2592210B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06341831A (en) | 1994-12-13 |
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