KR20090076567A - Measuring instrument for sinking of soft ground and measuring method thereof - Google Patents

Measuring instrument for sinking of soft ground and measuring method thereof Download PDF

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KR20090076567A
KR20090076567A KR1020080002593A KR20080002593A KR20090076567A KR 20090076567 A KR20090076567 A KR 20090076567A KR 1020080002593 A KR1020080002593 A KR 1020080002593A KR 20080002593 A KR20080002593 A KR 20080002593A KR 20090076567 A KR20090076567 A KR 20090076567A
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South Korea
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pressure
sensor
settlement
air
reference sensor
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KR1020080002593A
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Korean (ko)
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KR100931061B1 (en
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최종철
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최종철
주식회사 서신엔지니어링
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/06—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels by using barometric means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B13/00—Measuring arrangements characterised by the use of fluids
    • G01B13/24—Measuring arrangements characterised by the use of fluids for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/028—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges correcting or regulating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/08—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
    • G01L7/088—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type correcting or regulating means for flexible diaphragms

Abstract

A device for measuring a soft ground subsidence and a method for measuring a subsidence degree are provided to reduce the time and cost for measuring the subsidence degree by burying the measuring device in the ground. A device for measuring a soft ground subsidence comprise: a reference sensor(110) positioned in a floating rock layer; a subsidence measurement sensor(120) positioned on the top higher than the reference sensor; and a pressure correction unit(130) buried under the underground. The pressure correction unit is consisting of: a liquid bath storing the liquid; an air reservoir in which the air is stored; a liquid supply line supplying the liquid to the reference sensor and the pressure sensor; an air supply line supplying the air to the reference sensor and the pressure sensor; and a diaphragm delivering the pressure, applied to the air reservoir, to the liquid bath.

Description

연약 지반 침하 측정장치 및 이에 따른 침하량 측정방법{Measuring instrument for sinking of soft ground and measuring method thereof}Soft ground subsidence measuring apparatus and a method for measuring subsidence accordingly {Measuring instrument for sinking of soft ground and measuring method

본 발명은 연약 지반 침하 측정장치 및 이에 따른 침하량 측정방법으로서, 보다 상세하게는 지반의 침하량을 측정하는 측정장치를 모두 지중에 매설하여 지표면의 구조물에 의한 토목공사의 방해요인을 제거할 수 있고, 그로 인하여 소요되는 계측비용 및 계측시간을 현저히 줄일 수 있는 연약 지반 침하 측정장치 및 연약 지반의 침하량 측정방법에 관한 것이다.The present invention is a soft ground settlement measuring device and a settlement measurement method according to this, more specifically, all the measuring devices for measuring the settlement of the ground can be embedded in the ground to remove the obstacles of civil engineering work by the surface structure, Therefore, the present invention relates to a soft ground settlement measuring apparatus and a method for measuring settlement of soft ground, which can significantly reduce the measurement cost and measurement time required.

토목현장에서는 성토작업으로 발생되는 연약 지반을 다음 단계의 강성지반으로 바꾸기 위해서 연약 지반의 상태를 계측하여야 한다. In civil works, the condition of soft ground should be measured in order to convert the soft ground generated by embankment work into the rigid ground of the next stage.

즉, 토목계측의 목적은 연약 지반의 침하 정도에 대해 정확하게 그 정도를 예측하여 관리함으로써 성토 시공시 원지반 점성토층의 거동 특성, 압밀침하에 의한 강도증가 등을 비교 검토하여 현재 상태의 안정성을 파악하고, 연약지반의 향후 거동과 안정성을 예측하여 다음 단계의 본 공사구간에 반영할 수 있는 정보를 신속 하게 제공하는 것이다.In other words, the purpose of civil measurement is to accurately predict and manage the subsidence of soft soil, and to compare the behavior characteristics of the clay viscous soil during the construction process and increase the strength due to consolidation settlement. In other words, it is to provide information that can be reflected in the next construction section by predicting the future behavior and stability of the soft ground.

한편, 연약 지반의 침하량을 계측하는 선행기술로는 하기와 같은 방법이 널리 사용되고 있다.On the other hand, the following method is widely used as a prior art for measuring the settlement of the soft ground.

먼저, 도 1을 참조하면, 지반침하 측정장치(10)는 침하판(11)과 측정봉(12) 및 보호철관(13)으로 이루어지고, 구체적으로 성토 매립지면에 일정한 크기의 철판(11)을 깔고 철판위에 측정봉(12)을 부착하고 측정봉(12)을 토사로부터 보호하기 위하여 보호철관(13)을 씌워 부착시키고, 측정봉(12) 상단을 안정지반의 기준점에서 광파괴 방법 또는 측량기로 그 높이를 측정하여 연약 지반의 침하량이 계측되고 있다.First, referring to FIG. 1, the ground subsidence measuring apparatus 10 includes a settlement plate 11, a measuring rod 12, and a protective steel tube 13, and specifically, an iron plate 11 having a predetermined size on a fill landfill surface. And attach the measuring rod 12 on the iron plate and cover it with a protective steel tube 13 to protect the measuring rod 12 from earth and sand, and attach the upper end of the measuring rod 12 at the reference point of the stable ground. The height of the logs is measured and the settlement of the soft ground is measured.

다음으로, 도 2를 참조하여 다른 일 예를 살펴보면, 지반침하 측정장치(20)는 성토 직전에 삽입된 호스관(21)과 프로파일 게이지(22)로 이루어지고, 이와 같은 측정장치(20)에 의한 측정방법은 먼저 주름진 호스관(21)을 깔고 그 위에 성토(23)를 하고, 이때 액체 정체압력을 이용한 프로파일 게이지(22)를 일정한 주기로 호스관(21)을 통과시키며 일정 위치의 변화를 기점 A를 기준으로 해서 각각 B, C, D 지점의 침하량을 측정하여 이루어진다.Next, referring to another example with reference to Figure 2, the ground subsidence measuring device 20 is made of a hose pipe 21 and the profile gauge 22 inserted just before the fill, and in such a measuring device 20 The measuring method by first spreading the corrugated hose pipe 21 and the filling 23 thereon, at this time passing through the hose pipe 21 at regular intervals through the profile gauge 22 using the liquid stagnation pressure to start the change of a certain position This is done by measuring the settling amounts at points B, C, and D, respectively, based on A.

또한, 도 3에 따른 지반침하 측정장치(30)는 PVC관(31)과 자석이 부착된 거미발(32)과 센서(33)로 구성되고, 이러한 측정장치(31)에 의한 측정방법은 보링천공 후 PVC관(31)을 삽입하고, PVC관(31)의 외견을 따라 자석이 부착된 거미발(32a, 32b)을 원하는 위치에 삽입하여 토사와 한 몸이 되게 한 다음 토사의 침하량을 마이크로 스위치가 부착된 센서(33)를 하강시켜 거미발(32a, 32b)의 변화된 위치를 지면의 기준점을 기준으로 측정하여 침하량을 계측하는 것이다.In addition, the ground subsidence measuring apparatus 30 according to Figure 3 is composed of a PVC pipe 31, a spider web 32 attached to a magnet and a sensor 33, the measuring method by such a measuring device 31 is boring boring After inserting the PVC pipe 31, the spider web (32a, 32b) attached to the magnet along the outer surface of the PVC pipe 31 in the desired position to make a body with the soil and then settled the amount of sediment microswitch The sensor 33 is lowered to measure the settled amount by measuring the changed position of the spider feet 32a and 32b based on the reference point of the ground.

그러나, 상기와 같은 종래 일반적으로 널리 알려진 지반침하 측정장치(10, 20, 30)는 침하량 측정시 다음과 같은 문제점을 드러내고 있다.However, the conventional ground sediment measuring apparatus 10, 20, and 30, which are widely known in the related art, exhibit the following problems when measuring the amount of settlement.

먼저, 도 1에 도시된 지반침하 측정장치(10)는 지표면에만 설치가 가능하며 성토높이에 따라 연결증설이 필요한 경우가 빈번하여 소요비용이 증가하게 되는 문제점이 있고, 도 2에 도시된 지반침하 측정장치(20)는 도로 개설공사에 한하여 사용할 수 있는 방법이며 그 기준점은 지상의 안정지반에 설치되어야 하는 한계점이 있고, 도 3에 도시된 지반침하 측정장치(30)는 측정하고자 하는 모든 위치에 천공하여야하고, 한 지점에서의 층별침하만 측정이 가능하다는 한계가 존재하게 된다.First, the ground subsidence measuring apparatus 10 shown in FIG. 1 may be installed only on the ground surface, and there is a problem in that the required cost is increased due to frequent connection expansion according to the fill height, and the ground settlement shown in FIG. The measuring device 20 is a method that can be used only for road construction work, and the reference point has a limit point that must be installed on the stable ground of the ground, and the ground subsidence measuring device 30 shown in FIG. There is a limit to the fact that it is possible to measure perforation only at one point.

또한, 이러한 종래의 선행기술은 모두 지상의 기준점을 공통적으로 이용하고 있어 기준점과 측정 지점이 길어지는 경우 토목공사의 방해요인이 되어 공사가 지연되는 문제점을 피할 수 없게 된다.In addition, all of the conventional prior art uses a reference point of the ground in common, so if the reference point and the measuring point is long, it becomes a disturbance of civil engineering work, it is not possible to avoid the problem that the construction is delayed.

본 발명은 상기와 같은 문제점을 극복하기 위하여 창출된 것으로서, 본 발명은 기준점으로 정한 지표면이 동시에 침하할 수 있는 경우나 수중 매립공사에 있어 그 기준점을 지상에 설치할 수 없는 경우 지하의 부동암반층을 기준점으로 설정하고, 모든 측정장비를 지하에 매설하며 신호 케이블만이 지상에 노출됨으로써 지상에서 매립 및 성토공사를 함에 있어 구조물에 의한 공사 방해를 제거하여 침하량 측정에 소요되는 비용과 시간을 현저히 줄일 수 있는 연약 지반 침하 측정장치 및 침하량 측정방법을 제공하는 것을 그 목적으로 한다.The present invention was created in order to overcome the above problems, the present invention is a reference point to the basement floating bedrock layer when the ground surface determined as a reference point can be settled at the same time or when the reference point cannot be installed on the ground in the underwater reclamation work By laying all the measuring equipment underground and only the signal cable is exposed to the ground, it is possible to remarkably reduce the cost and time required to measure the settlement by eliminating the construction obstacles caused by the structure in the landfill and embankment work on the ground. The purpose of the present invention is to provide a soft ground subsidence measuring device and a settlement measurement method.

본 발명의 다른 목적 및 장점들은 하기에 설명될 것이며, 본 발명의 실시예에 의해 알게 될 것이다. 또한, 본 발명의 목적 및 장점들은 특허청구범위에 나타낸 수단 및 조합에 의해 실현될 수 있다.Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

본 발명의 일 측면에 따른 연약 지반 침하 측정장치는, 부동암반층에 위치하는 기준센서와; 상기 기준센서보다 상부에 위치하고, 소정 위치에서의 지반의 침하량을 측정하기 위한 침하측정센서; 및 지하에 매설되고, 상기 기준센서 및 상기 침하측정센서에 상대압력 상태를 제공하는 압력보정유닛을 구비한다.Soft ground subsidence measuring apparatus according to an aspect of the present invention, the reference sensor located in the floating rock bed; A settlement measurement sensor located above the reference sensor and configured to measure settlement of the ground at a predetermined position; And a pressure correction unit embedded in the basement and providing a relative pressure state to the reference sensor and the settlement measurement sensor.

여기서, 상기 압력보정유닛은 액체를 저장하는 액체저장조와, 에어가 저장되는 에어저장조와, 액체를 상기 기준센서 및 압력센서에 공급하는 액체공급라인과, 에어를 상기 기준센서 및 압력센서에 공급하는 에어공급라인 및 상기 에어저장조에 가하여지는 압력을 액체저장조로 전달시키는 다이어프램을 구비하는 것이 바람직하다.Here, the pressure correction unit includes a liquid storage tank for storing liquid, an air storage tank for storing air, a liquid supply line for supplying liquid to the reference sensor and a pressure sensor, and supplying air to the reference sensor and the pressure sensor. It is preferable to have an air supply line and a diaphragm for transmitting the pressure applied to the air reservoir to the liquid reservoir.

또한, 상기 다이어프램은, 재질이 탄성체인 것이 바람직하다.In addition, the diaphragm is preferably made of an elastic material.

본 발명의 다른 측면에 따른 연약 지반의 침하량 측정방법은, 지하의 소정 위치에 기준센서 및 침하측정센서에 상대압력 상태를 제공하는 압력보정유닛을 매설하고, 상기 압력보정유닛으로부터 액체공급라인과 에어공급라인이 연결된 기준센 서를 부동암반층에 위치시키고, 상기 압력보정유닛으로부터 액체공급라인과 에어공급라인이 연결된 침하측정센서를 측정하고자 하는 위치에 매설하고, 상기 침하측정센서의 위치 변경시 기준센서와의 압력의 차이를 측정하여 지반의 침하량을 측정한다.According to another aspect of the present invention, a method for measuring settlement of a soft ground includes embedding a pressure correction unit that provides a relative pressure state to a reference sensor and a settlement measurement sensor at a predetermined position in the basement, and supplying a liquid supply line and air from the pressure correction unit. Place the reference sensor connected to the supply line in the floating rock bed, and embed the sedimentation measurement sensor connected to the liquid supply line and the air supply line from the pressure compensation unit at the position to be measured, and change the position of the settlement measurement sensor with the reference sensor. Measure the settlement of the ground by measuring the difference in pressure.

여기서, 상기 압력보정유닛은 대기압에 해당하는 공기압을 인위적으로 부가하여 상기 기준센서 및 침하측정센서에 인위적인 상대압력을 생성시키는 것이 바람직하다.In this case, the pressure correction unit may artificially add air pressure corresponding to atmospheric pressure to generate an artificial relative pressure to the reference sensor and the settlement measurement sensor.

본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

상기와 같은 연약 지반 침하 측정장치 및 이에 따른 침하량 측정방법을 다음과 같은 효과를 제공한다.The soft ground settlement measurement device as described above and the settlement method according to this provides the following effects.

기준점으로 정한 지표면이 동시에 침하할 수 있는 경우나 수중 매립공사에 있어 그 기준점을 지상에 설치할 수 없는 경우 지하의 부동암반층을 기준점으로 설정하고, 모든 측정장비를 지하에 매설하며 신호 케이블만이 지상에 노출됨으로써 지상에서 매립 및 성토공사를 함에 있어 구조물에 의한 공사 방해를 제거하여 침하량 측정에 소요되는 비용과 시간을 현저히 줄일 수 있다.If the ground surface set as the reference point can be settled at the same time or if the reference point cannot be installed on the ground in the underwater reclamation work, set the underground rock bed as the reference point, bury all the measuring equipment underground, and only the signal cable By being exposed, landfilling and filling work on the ground can eliminate the construction blockage by the structure, significantly reducing the cost and time required to measure settlement.

이하, 본 발명에 따른 연약 지반 침하 측정장치 및 이에 따른 침하량 측정방법에 대해 실시예를 통해 보다 구체적으로 설명하도록 한다.Hereinafter, the soft ground settlement measuring apparatus and the settlement method according to the present invention will be described in more detail through examples.

본 발명의 연약 지반 침하 측정장치는 지하에 매설되어 대기압이 작용되지 못하는 액체 및 압력게이지에 대기압을 인위적으로 가하여 상대압력의 상태를 만들어 지반의 정확한 침하량을 측정하고자 한다.Soft ground subsidence measuring apparatus of the present invention is to buried underground to create a state of relative pressure by artificially applying atmospheric pressure to the liquid and pressure gauge that can not operate the atmospheric pressure to measure the accurate settlement of the ground.

현재 시중에서 사용되고 있는 모든 압력게이지는 액체의 수직거리에 따라 액체정체압력이 변화하는 것을 압력게이지로 측정함에 있어 자연의 대기압을 고려한, 즉 상대 압력 상태로 제작되어진다. All pressure gauges currently in use on the market are manufactured in a relative pressure state, taking into account the natural atmospheric pressure in measuring the change in stagnation pressure with the vertical distance of the liquid.

한편, 지상 또는 지표면에 침하 측정장치를 설치할 경우에는 토목 공사의 방해 요인이 되고, 그로 인하여 지중에 침하 측정장치를 매설하여 침하량을 측정할 필요성이 대두되고 있는 현실이다.On the other hand, when a settlement measurement device is installed on the ground or the ground surface becomes a disturbing factor of civil engineering work, and therefore, the need to measure the amount of settlement by embedding a settlement measurement device in the ground.

그러나, 지중에 현재 시중에서 사용되고 있는 압력게이지를 지중에 매설할 경우에는 토사에 의해 대기압이 작용할 수 없고, 그로 인하여 정확한 침하량의 측량이 불가능한 문제점이 발생하게 된다.However, when the pressure gauge currently used in the ground is buried in the ground, atmospheric pressure cannot work due to the soil, thereby causing a problem that cannot accurately measure the amount of settlement.

본 발명의 연약 지반 침하 측정장치는 이러한 문제점을 극복하고자, 지하에 매설되는 압력게이지의 작동에 필수적인 상대압력 상태를 매설된 압력게이지에 인위적으로 만들어준다.In order to overcome this problem, the soft ground subsidence measuring apparatus of the present invention artificially makes the relative pressure state essential for the operation of the pressure gauge buried underground.

도 4를 참조하면, 본 발명의 일 실시예에 따른 연약 지반 침하 측정장치(100)는 기준센서(110)와 침하측정센서(120) 및 압력보정유닛(130)을 구비한다.4, the soft ground settlement measuring apparatus 100 according to an embodiment of the present invention includes a reference sensor 110, a settlement measurement sensor 120, and a pressure compensation unit 130.

상기 기준센서(110)는 종래 일반적인 지반 침하 측정장치의 기준점이 지상에 설치되는 것과 달리 지중의 부동암반층에 위치하고, 그로 인하여 상부 지반의 침하시에도 기준센서(110)가 나타내는 계측량은 변화가 없게 된다.Unlike the reference point of the conventional ground subsidence measuring device, the reference sensor 110 is located in a floating rock layer in the ground, so that the measured amount indicated by the reference sensor 110 does not change even when the upper ground subsides. do.

상기 침하측정센서(120)는 계측하고자 하는 연약 지반의 소정 위치에 위치하고, 도 4를 참조하면 압력보정유닛(130)로부터 분지되어 복수 개의 침하측정센서(120b, 120c, 120d, 120e, 120f, 120g)를 지중에 형성시킬 수 있으며 각 지점(B, C, D, E, F)의 침하량을 동시에 계측할 수 있다. 한편, 상기 침하측정센서(120)는 부동암반층에 위치(A 지점)하는 기준센서(110) 보다 상부에 위치할 수 있다.The settlement measurement sensor 120 is located at a predetermined position of the soft ground to be measured, and referring to FIG. 4, the settlement measurement branch is branched from the pressure compensation unit 130 to provide a plurality of settlement measurement sensors 120b, 120c, 120d, 120e, 120f, and 120g. ) Can be formed in the ground, and the settlement of each point (B, C, D, E, F) can be measured simultaneously. On the other hand, the settlement measurement sensor 120 may be located above the reference sensor 110 located on the floating rock bed (A point).

이하, 압력보정유닛(130)에 대해 자세히 살펴보도록 한다.Hereinafter, the pressure correction unit 130 will be described in detail.

도 5를 참조하면, 상기 압력보정유닛(130)은 상기 기준센서(110)에 상대압력 상태를 제공하는 것으로써, 액체를 저장하는 액체저장조(131)와 에어가 저장되는 에어저장조(132)와 액체를 상기 기준센서(110)에 공급하는 액체공급라인(133)과 에어를 상기 기준센서(110) 및 침하측정센서(120)에 공급하는 에어공급라인(134) 및 상기 에어저장조(132)에 가하여지는 압력을 액체저장조(131)로 전달시키는 다이어프램(135)을 구비한다.Referring to FIG. 5, the pressure correction unit 130 provides a relative pressure state to the reference sensor 110, and a liquid storage tank 131 for storing a liquid and an air storage tank 132 for storing air. The liquid supply line 133 for supplying liquid to the reference sensor 110 and the air supply line 134 and the air storage tank 132 for supplying air to the reference sensor 110 and the settlement measurement sensor 120. It is provided with a diaphragm 135 which transmits the pressure applied to the liquid reservoir 131.

구체적으로, 외부로부터 대기압의 압력을 인위적으로 에어저장조(132)에 가하여 주면 다이어프램(135)을 통하여 그 대기압이 동일하게 액체저장조(131)에도 가하여지고, 그로 인하여 기준센서(110)의 A'면 및 B'면에도 동일하게 대기압이 작용하게 되어 상쇄되게 되며 액체공급라인(133)에 의한 액체의 정체압력만이 기준센서(110)에 의해 계측되게 되는 것이다. Specifically, when the atmospheric pressure is artificially applied to the air storage tank 132 from the outside, the atmospheric pressure is equally applied to the liquid storage tank 131 through the diaphragm 135, whereby the A 'surface of the reference sensor 110 In addition, the atmospheric pressure acts on the surface of B 'as well, and is offset. Only the stagnation pressure of the liquid by the liquid supply line 133 is measured by the reference sensor 110.

여기서, 상기 다이어프램(135)은 에어저장조(132)에 가하여지는 압력이 동일하게 액체저장조(131)에 전달될 수 있도록 재질이 탄성체인 것이 바람직하다.Here, the diaphragm 135 is preferably made of an elastic material so that the pressure applied to the air reservoir 132 may be transmitted to the liquid reservoir 131 in the same manner.

한편, 상기 압력보정유닛(130)은 침하측정센서(120)와도 동일한 방법에 의해 연결되어진다.On the other hand, the pressure compensation unit 130 is connected by the same method as the settlement measurement sensor 120.

이하, 본 발명의 다른 실시예에 따른 연약 지반 침하량 측정방법에 대해 상술하도록 한다.Hereinafter, a method for measuring soft ground subsidence according to another embodiment of the present invention will be described in detail.

본 발명에 따른 연약 지반 침하량 측정방법은, 지하의 소정 위치에 기준센서 및 침하측정센서에 상대압력 상태를 제공하는 압력보정유닛을 매설하고, 상기 압력보정유닛으로부터 액체공급라인과 에어공급라인이 연결된 기준센서를 부동암반층에 위치시키고, 상기 압력보정유닛으로부터 액체공급라인과 에어공급라인이 연결된 침하측정센서를 측정하고자 하는 위치에 매설하고, 상기 침하측정센서의 위치 변경시 기준센서와의 압력의 차이를 측정하여 지반의 침하량을 측정한다.In the soft ground settlement measurement method according to the present invention, a pressure correction unit for providing a relative pressure state to the reference sensor and the settlement measurement sensor in a predetermined position in the basement, the liquid supply line and the air supply line is connected from the pressure correction unit Place the reference sensor in the floating rock bed, and embed the sedimentation measurement sensor connected to the liquid supply line and the air supply line from the pressure correction unit at the position to be measured, and the difference between the pressure and the reference sensor when the position of the settlement measurement sensor is changed. Measure the amount of settlement of the ground.

도 5를 참조하여 압력보정유닛(130)과 기준센서(110)의 연결 방법을 살펴보면, 기준센서(110)의 밸브(136)를 오픈시킨 뒤 액체의 기포발생을 방지하기 위하여 기준센서(110)를 압력보정유닛(130) 보다 높은 위치에 놓고, 밸브(137)를 열어 외 부로부터 액체를 유입시켜 액체공급라인(133)을 충진시킨다. 그 후, 밸브(136, 137)를 닫고 에어라인의 밸브(138)를 오픈시킨 뒤 외부로부터 인위적으로 대기압인 공기압 1 kg/㎠를 충전하고 밸브(138)를 닫는다. Looking at the connection method of the pressure compensation unit 130 and the reference sensor 110 with reference to Figure 5, after opening the valve 136 of the reference sensor 110, the reference sensor 110 to prevent the generation of liquid bubbles. To a position higher than the pressure compensation unit 130, the valve 137 is opened to introduce the liquid from the outside to fill the liquid supply line 133. Thereafter, the valves 136 and 137 are closed and the valve 138 of the air line is opened, and then the air pressure 1 kg / cm 2, which is artificially atmospheric pressure from the outside, is filled and the valve 138 is closed.

다음으로, 기준센서(110)를 압력보정유닛(130)보다 아래 위치로 내리면, 내린만큼의 액체공급라인(133)의 직선거리에 따른 정체압력과 다이어프램(135)을 통해 가해지는 공기압의 합이 기준센서(110)의 A'면에 가해지고, 외부로부터 가하여지는 공기압이 에어저장조(132)로부터 에어공급라인(134)을 통해 기준센서(110)의 B'면에 가하여진다.Next, when the reference sensor 110 is lowered to the lower position than the pressure compensation unit 130, the sum of the stagnation pressure and the air pressure applied through the diaphragm 135 according to the linear distance of the liquid supply line 133 as much as the fall down The air pressure applied to the A 'surface of the reference sensor 110 is applied to the B' surface of the reference sensor 110 through the air supply line 134 from the air reservoir 132.

따라서, 기준센서(110)에서 계측되는 압력은 A'면 및 B'면에 가해지는 공기압이 상쇄된 액체의 정체압력이 측정될 수 있는 것으로써, 압력보정유닛(130)이 매설된 지반의 침하로 인하여 액체의 수직거리가 변화하면 기준센서(110) 압력의 변화로 나타나며 압력의 변화량은 수직거리의 변화량으로 환산될 수 있다.Therefore, the pressure measured by the reference sensor 110 is to measure the stagnation pressure of the liquid in which the air pressure applied to the A 'surface and the B' surface can be measured, and the settlement of the ground on which the pressure correction unit 130 is embedded Due to the change in the vertical distance of the liquid appears as a change in the pressure of the reference sensor 110 and the change in pressure may be converted into a change in the vertical distance.

한편, 압력보정유닛(130)과 침하측정센서(120)와의 연결 방법도 상기와 같이 동일하게 적용될 수 있다.On the other hand, the connection method of the pressure compensation unit 130 and the settlement measurement sensor 120 may be applied in the same manner as described above.

이러한 원리를 이용한 연약 지반의 침하량 측정방법을 도 4를 통해 보다 구체적으로 살펴보면, 토목공사에서 측정하고자 하는 여러 지점 중 한 지점 위치에 보링작업에 의하여 지하 부동암반층까지 천공을 한 다음 기준센서(110)를 부동암반의 소정 위치(A)에 설치하고, 측정이 필요한 각 지점(B, C, D, E, F, G)에 침하측정센서(120b, 120c, 120d, 120e, 120f, 120g)를 매설하고, 침하측정센서(120b, 120c, 120d, 120e, 120f, 120g)의 위치 변화시 정체압력의 변화에 따른 토사의 침 하량을 측정하게 되는 것이다.Looking at the method of measuring the settlement of the soft ground using this principle in more detail through Figure 4, the perforated to the underground floating rock bed by boring work at one of several points to be measured in civil engineering, and then the reference sensor 110 Is installed at a predetermined position (A) of the floating rock, and the settlement measurement sensors 120b, 120c, 120d, 120e, 120f, and 120g are embedded at each point (B, C, D, E, F, G) where measurement is required. In addition, when the position of the settlement measurement sensors (120b, 120c, 120d, 120e, 120f, 120g) changes the sedimentation amount of the soil according to the change of stagnation pressure.

이때, 기준센서(110)는 부동암반의 소정 위치(A)에 고정되고, 압력보정유닛(130) 자체도 각각의 침하측정센서(120b, 120c, 120d, 120e, 120f, 120g)와 함께 토사의 침하에 따라 같이 침하하나, (A-U)-(B-U) = A-B, (A-U)-(C-U) = A-C, 즉 압력보정유닛(130)이 침하되는 것과 상관없이 기준센서(110)를 기점으로 각각의 침하측정센서(120b, 120c, 120d, 120e, 120f, 120g)의 액체 수직거리가 산출되는 것이다.At this time, the reference sensor 110 is fixed to a predetermined position (A) of the floating rock, and the pressure compensation unit 130 itself also with the sedimentation measuring sensors (120b, 120c, 120d, 120e, 120f, 120g) Settle according to the settling, but (AU)-(BU) = AB, (AU)-(CU) = AC, that is, regardless of whether the pressure compensation unit 130 is settled, respectively, starting from the reference sensor 110 The liquid vertical distance of the settlement sensors 120b, 120c, 120d, 120e, 120f, and 120g is calculated.

그리고, 상기와 같은 연약 지반 침하 측정장치는 지상에 구조물을 설치할 수 없는 해양의 연약 지반 침하량 측정시에도 유용하게 적용될 수 있다. 해저의 부동암반층의 소정 위치에 기준센서를 설치하고 압력보정유닛과 침하측정센서를 침하가능성이 있는 해양의 지반에 설치 후 통신케이블 및 무선모뎀 장치와 같은 주변기기를 해수면의 부유층에 설치함으로써 토목 공사의 방해요인을 최소화하면서도 공사비용을 획기적으로 줄일 수 있는 이점이 발생하게 된다.In addition, the soft ground settlement measuring apparatus as described above may be usefully applied even when measuring the soft ground settlement of the ocean that can not install the structure on the ground. Install the reference sensor at a certain position on the floating rock bed of the seabed, install the pressure compensation unit and settlement sensor on the ground of the sea where there is a possibility of sinking, and install peripherals such as communication cables and wireless modem devices in the floating layer of the sea surface. There is an advantage that can significantly reduce the construction cost while minimizing the obstacles.

이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술 사상과 아래에 기재될 특허 청구범위의 균등 범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Of course, various modifications and variations are possible within the scope of equivalent claims.

도 1은 종래 일반적인 지반 침하 측정장치의 일 예를 나타낸 개략도이고,1 is a schematic view showing an example of a conventional general ground subsidence measuring apparatus,

도 2는 종래 일반적인 지반 침하 측정장치의 다른 예를 나타낸 개략도이고,2 is a schematic view showing another example of a conventional general ground subsidence measuring apparatus,

도 3은 종래 일반적인 지반 침하 측정장치의 다른 예를 나타낸 개략도이고,3 is a schematic view showing another example of a conventional general ground subsidence measuring apparatus,

도 4는 본 발명의 일 실시예에 따른 연약 지반 침하 측정장치를 도시한 도면이고,4 is a view showing a soft ground settlement measuring apparatus according to an embodiment of the present invention,

도 5는 도 4에 도시된 압력보정유닛을 구체적으로 나타낸 도면이다.5 is a view showing in detail the pressure correction unit shown in FIG.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

100... 연약 지반 침하 측정장치 110... 기준센서100. Soft ground subsidence measuring device 110 ... Reference sensor

120... 침하측정센서 130... 압력보정유닛120 ... Settlement sensor 130 ... Pressure compensation unit

131... 액체저장조 132... 에어저장조131 ... Liquid reservoir 132 ... Air reservoir

133... 액체공급라인 134... 에어공급라인133 ... Liquid Supply Line 134 ... Air Supply Line

135... 다이어프램 136~138... 밸브135 ... Diaphragm 136 ~ 138 ... Valve

Claims (5)

부동암반층에 위치하는 기준센서와;A reference sensor located in the floating rock bed; 상기 기준센서보다 상부에 위치하고, 소정 위치에서의 지반의 침하량을 측정하기 위한 침하측정센서; 및A settlement measurement sensor located above the reference sensor and configured to measure settlement of the ground at a predetermined position; And 지하에 매설되고, 상기 기준센서 및 상기 침하측정센서에 상대압력 상태를 제공하는 압력보정유닛을 구비하는 연약 지반 침하 측정장치.A soft ground subsidence measuring device embedded in the basement, and having a pressure correction unit for providing a relative pressure state to the reference sensor and the settlement measurement sensor. 제 1항에 있어서,The method of claim 1, 상기 압력보정유닛은, 액체를 저장하는 액체저장조와, 에어가 저장되는 에어저장조와, 액체를 상기 기준센서 및 압력센서에 공급하는 액체공급라인과, 에어를 상기 기준센서 및 압력센서에 공급하는 에어공급라인 및 상기 에어저장조에 가하여지는 압력을 액체저장조로 전달시키는 다이어프램을 구비하는 것을 특징으로 하는 연약 지반 침하 측정장치.The pressure correction unit includes a liquid storage tank for storing liquid, an air storage tank for storing air, a liquid supply line for supplying liquid to the reference sensor and a pressure sensor, and air for supplying air to the reference sensor and the pressure sensor. And a diaphragm for transmitting a pressure applied to the supply line and the air reservoir to the liquid reservoir. 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2, 상기 다이어프램은, 재질이 탄성체인 것을 특징으로 하는 연약 지반 침하 측정장치. The diaphragm is a soft ground settlement measuring device, characterized in that the material is an elastic body. 지하의 소정 위치에 기준센서 및 침하측정센서에 상대압력 상태를 제공하는 압력보정유닛을 매설하고, Embeds a pressure correction unit that provides relative pressure to the reference sensor and settlement measurement sensor at a predetermined location in the basement, 상기 압력보정유닛으로부터 액체공급라인과 에어공급라인이 연결된 기준센서를 부동암반층에 위치시키고, Place the reference sensor connected to the liquid supply line and the air supply line from the pressure compensation unit in the floating rock bed, 상기 압력보정유닛으로부터 액체공급라인과 에어공급라인이 연결된 침하측정센서를 측정하고자 하는 위치에 매설하고,Buried in the position to measure the settlement sensor connected to the liquid supply line and the air supply line from the pressure compensation unit, 상기 침하측정센서의 위치 변경시 기준센서와의 압력의 차이를 측정하여 지반의 침하량을 측정하는 연약 지반의 침하량 측정방법.How to measure the settlement of soft ground by measuring the difference in pressure with the reference sensor when the position of the settlement measurement sensor changes. 제 4항에 있어서,The method of claim 4, wherein 상기 압력보정유닛은 대기압에 해당하는 공기압을 인위적으로 부가하여 상기 기준센서 및 침하측정센서에 인위적인 상대압력을 생성시키는 것을 특징으로 하는 연약 지반의 침하량 측정방법.And the pressure compensation unit artificially adds an air pressure corresponding to atmospheric pressure to generate an artificial relative pressure to the reference sensor and the settlement measurement sensor.
KR1020080002593A 2008-01-09 2008-01-09 Soft ground settlement measuring device and settlement method according to it KR100931061B1 (en)

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CN105862702A (en) * 2015-01-23 2016-08-17 长沙理工大学 Settlement measuring method under water pre-pressing condition
EP3193135A1 (en) * 2016-01-15 2017-07-19 Fugro N.V. Subsidence monitoring system
CN112033358A (en) * 2020-09-11 2020-12-04 辽宁工程技术大学 Mining subsidence area settlement monitoring device
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CN114812502A (en) * 2022-05-12 2022-07-29 北京蓝尊科技有限公司 Soft soil stratum deep soil body settlement monitoring method using long-distance bedrock as reference point
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CN105862702A (en) * 2015-01-23 2016-08-17 长沙理工大学 Settlement measuring method under water pre-pressing condition
EP3193135A1 (en) * 2016-01-15 2017-07-19 Fugro N.V. Subsidence monitoring system
NL2016100A (en) * 2016-01-15 2017-07-24 Fugro N V Subsidence Monitoring System.
CN112033358B (en) * 2020-09-11 2022-03-08 辽宁工程技术大学 Mining subsidence area settlement monitoring device
CN112033358A (en) * 2020-09-11 2020-12-04 辽宁工程技术大学 Mining subsidence area settlement monitoring device
CN113125066A (en) * 2021-03-08 2021-07-16 浙江工业大学 Device and method for testing floating force of single-ring duct piece
KR102282735B1 (en) * 2021-04-13 2021-07-29 (주)에프비지코리아 Ground settlement measuring apparatus and method thereof
WO2022220341A1 (en) * 2021-04-13 2022-10-20 (주)에프비지코리아 Apparatus and method for measuring subsidence using pressure gauges
KR20220141715A (en) * 2021-04-13 2022-10-20 (주)에프비지코리아 Ground settlement measuring apparatus
US11598685B2 (en) 2021-04-13 2023-03-07 Fbg Korea Inc. Apparatus and method for measuring ground subsidence using pressure gauge
CN114812502A (en) * 2022-05-12 2022-07-29 北京蓝尊科技有限公司 Soft soil stratum deep soil body settlement monitoring method using long-distance bedrock as reference point
CN117109528A (en) * 2023-10-18 2023-11-24 中铁五局集团第一工程有限责任公司 Device and method for monitoring settlement deformation in high-fill roadbed
CN117109528B (en) * 2023-10-18 2024-03-15 中铁五局集团第一工程有限责任公司 Device and method for monitoring settlement deformation in high-fill roadbed

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