CN102539478A - Method for continuous detection of high polymer impermeable wall - Google Patents

Method for continuous detection of high polymer impermeable wall Download PDF

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CN102539478A
CN102539478A CN2011104197320A CN201110419732A CN102539478A CN 102539478 A CN102539478 A CN 102539478A CN 2011104197320 A CN2011104197320 A CN 2011104197320A CN 201110419732 A CN201110419732 A CN 201110419732A CN 102539478 A CN102539478 A CN 102539478A
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electrode
measuring
hole
electrodes
power supply
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CN2011104197320A
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Chinese (zh)
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冷元宝
周杨
张清明
朱文仲
李长征
杨磊
王坤昂
王锐
谢义兵
赵志忠
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黄河水利委员会黄河水利科学研究院
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Priority to CN2011104197320A priority Critical patent/CN102539478A/en
Publication of CN102539478A publication Critical patent/CN102539478A/en

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Abstract

The invention discloses a method for continuous detection of a high polymer impermeable wall, which comprises the following steps: drilling current supply electrode holes on the two sides of the impermeable wall; placing an upper current supply electrode and a lower current supply electrode that are paired in the current supply electrode holes; placing an upper measurement electrode and a lower measurement electrode that are paired in measurement electrode holes; filling water into the current supply electrode holes and the measurement electrode holes; synchronously moving the current supply electrodes and the measurement electrodes from top to bottom or from bottom to top, wherein a ground mainframe computer obtains a voltage and a supply current between the two measurement electrodes in every time of moving the electrodes; obtaining the specific resistance rou at a measurement point according to a specific resistance formula: rou = KUMN/I; using the depth position at the measurement point as an X-coordinate and the specific resistance at the measurement point as a Y-coordinate, marking the intersecting points of the depth position and the specific resistance, and connecting the marked points; and judging the impermeable performance of the wall according to the electrical leakage specific resistance change in the diagram. According to the method, the construction is simple and rapid; and as the detection point is near to the impermeable wall, the detection precision is high, and the judgment of leakage points is accurate, so as to provide accurate information for the subsequent maintenance leakage prevention, and provide strong guarantee for flood control of rivers and reservoirs.

Description

高聚物防渗墙连续性检测方法 Polymer cutoff wall Continuity Detection

[0001] 技术领域: [0001] Technical Field:

本发明涉及一种水利设施检测方法,尤其涉及一种深埋于水库、河流提坝内的高聚物防渗墙渗漏性能的防渗墙连续性检测方法。 The present invention relates to a method of detecting water facilities, particularly to a reservoir deep in the cut-off wall continuity detection cutoff wall polymers leakage performance within dam rivers mention.

[0002] 背景技术: [0002] BACKGROUND:

国家高度重视水利基础设施工程建设,病险水库除险加固和河道治理任务十分繁重。 Country attaches great importance to water conservancy facilities construction, dam reinforcement and river management task is very heavy. 高聚物防渗墙技术是近年来发展起来的提坝防渗加固新技术:往河道或水库提坝上开挖的注浆槽孔内,注入一种“高聚物”材料,发生化学反应后体积迅速膨胀,把槽孔充满并固化成高聚物薄片体,相邻槽孔薄片体便紧密胶结,形成连续的高聚物防渗体。 Polymers impermeable technology developed in recent years of new technologies mentioned dam seepage consolidation: river or reservoir to provide the grouting dam excavation slot, injecting a "polymer" material, chemical reaction after the rapid expansion of the volume, the slots filled with polymer and cured into a sheet, the sheet will be closely adjacent slots cement, to form a continuous impermeable polymer material. 该技术具有快捷、 超薄、微创、轻质、高韧、经济、耐久等优点。 This technique has fast, ultra-thin, minimally invasive, lightweight, high toughness, economy, durability and other advantages. 近几年,高聚物防渗墙技术在水库大坝、提防除险加固工程中得到了较为广泛的应用,积累了较丰富的实践经验,形成了较成熟的设计和施工方法。 In recent years, polymer impervious wall in the dam, beware get reinforcement project in a relatively wide range of applications, has accumulated a wealth of experience to form a more sophisticated design and construction methods. 高聚物防渗墙技术符合提坝除险加固的迫切需求,逐步成为中、小型水库及提坝防渗加固的主要措施。 Polymer cutoff wall technology in line with mention of the urgent needs of dam reinforcement, and gradually become the main measures, small reservoirs and dam seepage control and reinforcement of mention.

[0003] 目前,深埋于提坝内的高聚物防渗墙的防渗检测,只限于传感器布置于地面的检测方法,而这种地面检测存在工作量大,检测精度较低的缺点。 [0003] Currently, deep in detecting seepage cutoff wall polymers mentioned in the dam, limited detection sensor is arranged in the ground, the ground detecting the presence of such a heavy workload, low detection accuracy disadvantages.

[0004] 发明内容: [0004] SUMMARY OF THE INVENTION:

为解决目前高聚物防渗墙隐蔽工程施工质量的精细检测难题,本发明提供一种简便, 快速,检测精度高的防渗墙连续性检测方法。 In order to solve the current problem of detecting fine polymer cutoff wall construction quality of the hidden works, the present invention provides a simple, rapid, high detection accuracy of the cutoff wall continuity detection method.

[0005] 本发明的技术方案是以下述方式实现的: 一种防渗墙连续性检测方法,它采用下述步骤: [0005] aspect of the present invention is implemented in the following ways: one cutoff wall continuity detection method using the steps of:

一、在防渗墙两侧分别钻供电电极孔、测量电极孔,供电电极孔、测量电极孔均与防渗墙平行,供电电极孔横向直径线与测量电极孔横向直径线互为延长线且与防渗墙面垂直, 供电电极孔、测量电极孔距防渗墙体的距离相等; First, both sides of the electrode power supply cutoff wall holes are drilled, hole measuring electrode, the supply electrode hole, measuring average lateral transverse diameter of the electrode hole diameter of the wire line and the measuring electrode aperture cutoff wall parallel to each other powered electrode holes and an extension line , the power supply electrode hole, the electrode pitch measured distance is equal to the impervious wall body vertical cutoff wall surface;

二、在供电电极孔内放置一对上下供电电极,在测量电极孔内放置一对上下测量电极, 上供电电极与上测量电极保持在同一水平面上,下供电电极与下测量电极保持在同一水平面上,上供电电极与下供电电极之间距离=上测量电极与下测量电极之间的距离;供电电极和测量电极通过导线与地面主机连接; Second, one pair of vertically disposed power supply electrodes in an electrode hole, placing a bore in the measuring electrodes of upper and lower measuring electrode, the measuring electrode and the feeding electrode is maintained at the same level, the power supply electrode and the measuring electrode is maintained at the same level the measuring electrode and the distance between the electrodes = the measured distance between the lower electrode and the upper power supply electrode; feeding electrode and the measuring electrode connected to the ground via a wire host;

三、向供电电极孔、测量电极孔注满水; Third, the power supply to the electrode hole, measuring electrode hole is filled with water;

四、检测开始:自上而下或自下而上同步移动供电电极和测量电极,每移动一次电极, 地面主机取得一个两测量电极之间的电压Umn和供电电流I,根据电阻率公式P =KUmn71得到测点位置的电阻率P,以测量电极的电极连线中点作为测点位置,式中I为供电极电流、 K=I ; Fourth, the detection start: top down or bottom electrode and a synchronous mobile power measuring electrodes, each time moving electrode, made the ground voltage Umn host and a supply current I between the two measuring electrodes, according to the formula P = resistivity KUmn71 obtain the resistivity measuring point P, to the midpoint of the electrode connecting the measuring electrode as the measuring point, where I is the current of the power supply, K = I;

五、作图,以测点位置为横坐标,以测点电阻率为纵坐标在坐标系中标出两者交点,将标出的点连接; Five, plotted as the abscissa in measuring point to measuring point marked resistance of the ordinate at the intersection of the two coordinates, marked the point of attachment;

六、分析判断:根据图中的电阻率急剧升高时,可判断为墙体缺陷或墙底。 VI analysis to determine: The sharp increase in resistivity figures, the wall can be determined that the defect or the bottom wall.

[0006] 相邻两测点距为0. 2〜1. 0米。 [0006] two adjacent measuring point 0. 2~1. 0 m.

[0007] 供电电极孔、测量电极孔至防渗墙墙体的距离均为0. 2〜0. 3米。 [0007] The electrode power supply hole to hole distance measuring electrodes are impervious walls 0. 2~0 3m. [0008] 供电电极孔、测量电极孔钻孔深度应超过防渗墙深度,超出量为2〜4米。 [0008] The power supply electrode hole, drilling depth measuring electrode hole depth should exceed the cutoff wall, exceeds an amount of 2 ~ 4 meters.

[0009] 供电电极孔、测量电极孔可利用泥浆或清水护壁。 [0009] The power supply electrode hole, the hole may be measured using an electrode slurry or water retaining wall.

[0010] 本发明根据垂直布设的高电阻率墙体对电场的屏蔽作用而设计,防渗墙如果有发生渗漏地方,由于水的导电性,使得防渗墙体渗漏处的电阻率发生急剧性变化,从而判断防渗墙的防渗漏性能。 [0010] According to the present invention, high resistivity shielding wall laid perpendicular to the electric field design, if there are impervious wall where leakage occurs, since the conductivity of the water, so that the resistance of the leakage occurred at the cutoff wall member drastic changes, in order to determine performance against leakage impervious wall.

[0011] 本发明的积极效果是:施工简便、快速,因检测点离防渗墙体近,特别是近距离检测渗漏,因而检测精度高,判断渗漏点准确,给后续的维护防渗漏提供了准确的信息,给河流,水库的防洪提供了有力的保证。 [0011] The positive effect of the present invention are: the construction is simple, rapid, because the detection point from the near-impervious wall material, especially close detecting leaks, and therefore high precision, accurate leakage points determined, to the subsequent maintenance seepage leakage provide accurate information to the rivers, flood control reservoirs provide a strong guarantee.

[0012] 附图说明: [0012] BRIEF DESCRIPTION OF DRAWINGS:

图1为本发明的地面布局示意图。 Figure 1 is a schematic floor layout of the invention.

[0013] 图2为本发明的动态检测示意图。 [0013] FIG 2 a schematic dynamic testing of the present invention.

[0014] 图3为本发明的数据分析图。 [0014] FIG. 3 is an analysis of the data in FIG.

[0015] 图4为实测数据分析图。 [0015] FIG. 4 is an analysis of the measured data in FIG.

[0016] 具体实施方式: [0016] DETAILED DESCRIPTION:

下面结合附图对本发明作进一步说明: 实施例1、本防渗墙墙底深为4. 5米, 由图1、图2可以看出:本发明采用下述步骤: DRAWINGS The present invention will be further described: Example 1, the bottom wall cutoff wall is 4.5 m deep, from FIG. 1, FIG. 2 shows that: the present invention uses the following steps:

一、在防渗墙2两侧分别钻供电电极孔1、测量电极孔3,供电电极孔1、测量电极孔3均与防渗墙平行,供电电极孔1横向直径线与测量电极孔3横向直径线互为延长线且与防渗墙面垂直,供电电极孔1、测量电极孔3距防渗墙体的距离相均为0. 3米;供电电极孔1、测量电极孔3利用泥浆护壁。 First, the power supply cutoff wall 2 on both sides of each electrode hole drill 1, holes 3 measuring electrode, the supply electrode hole 1, hole measuring electrode 3 and the impervious wall are parallel, the diameter of the supply line transverse hole electrode and the measuring electrode 3 transverse hole diameter line with each other and the extension line perpendicular to the surface of the impervious wall, a hole supply electrodes, measuring the distance from the cutoff wall body 3 with electrode holes are 0.3 m; power supply electrodes hole 1, the hole 3 using a measuring electrode mud wall .

[0017] 二、在供电电极孔1内放置一对上下供电电极(A、B),在测量电极孔3内放置一对上下测量电极(M、N),上供电电极A与上测量电极M保持在同一水平面上,下供电电极B与下测量电极N保持在同一水平面上,上供电电极A与下供电电极B之间距离(AB)=上测量电极M与下测量电极N之间的距离(MN);供电电极和测量电极通过导线与地面主机连接; [0017] Second, placing one pair of upper and lower supply electrode (A, B) inside the feeding electrode hole, the measuring electrode holes disposed within 3 one pair of upper and lower measuring electrodes (M, N), the power supply electrode A and the measuring electrode M maintained at the same level, the power supply electrode B and the electrode of the N measured maintained at the same level, the distance between the electrodes M and N, measured between the upper electrode and the feeding electrode power supply electrode B a measured distance (AB) = a (the MN); and a power supply electrode wires and measuring the ground electrode via the host;

三、向供电电极孔1、测量电极孔3注满水; Third, the power supply to the electrode hole 1, hole measuring electrode 3 filled with water;

四、检测开始:自上而下或自下而上同步移动供电电极(A、B)和测量电极(M、N),每移动一次电极,地面主机取得一个两测量电极之间的电压Umn和供电电流I,根据电阻率公式P =KUmn71得到测点位置的电阻率P,以测量电极的电极连线中点作为测点位置,相邻两测点距为0. 2米,式中I为供电电极电流、K=I ; Fourth, the detection start: top down or bottom synchronous mobile power supply electrode (A, B) and measuring electrodes (M, N), each time the mobile electrode, the ground voltage Umn host made between a measuring electrode and two supply current I, obtained according to the formula P = KUmn71 resistivity resistivity measurement point position P, to the midpoint of the electrode connecting the measuring electrode as the measuring point, two adjacent measuring point is 0.2 m, the formula I is current supply electrodes, K = I;

五、作图,以测点深为横坐标,以测点电阻率为纵坐标在坐标系中标出两者交点,将标出的点连接; Five, plotted as the abscissa in depth measuring point to measuring point marked resistance of the ordinate at the intersection of the two coordinates, marked the point of attachment;

六、分析判断:由图3可以看出:深度仅在4. 5米以下超出防渗墙底时的电阻率发生急剧性变化,说明该防渗墙体无渗漏。 Six, analysis determined: It can be seen from Figure 3: Depth exceeded only drastic changes in resistivity occurs in a bottom impermeable walls 4.5 m or less, indicating that the body is no leakage cutoff wall.

[0018] 实施例2: [0018] Example 2:

本发明人采用相同的方法对另一水库大坝加固工程防渗墙进行了检测,高聚物防渗墙施工长度40米,墙体施工深度约5米,两测试钻孔位置约在距防渗墙一端15米处,采取上测方式,检测深度从7米到0. 75米,检测结果由图4所示,在0. 75米〜2. 5米之间,电阻率在0. 13^0. 23之间,在2. 5米至3. 5米之间,电阻率出现一个峰值,最大值为1. 2,在3. 5米至5. 25米之间,电阻率为0. 26^0. 48,在5. 25米至7米,又出现一峰值,最大值为1. 0。 The present invention uses another approach to the same dam reinforcement project cutoff wall was tested, the construction of cutoff polymer length 40 meters, a depth of about 5 meters wall construction, two test drilling position at a distance of about anti retentate end wall 15 meters, taking the test mode, the depth of detection from 7 m to 0.75 m, from the detection results shown in FIG. 4, between 0.75 m ~ 2. 5 m, a resistivity 0.13 ^ 0. 23, between 2.5 to 3.5 m, a resistivity peak appears, the maximum value is 1.2, between 3.5 to 5.25 m, resistance of 0 . 26 ^ 0.48, at 5.25 to 7 m, a peak appeared, the maximum value is 1.0. 可判断在深度3米处存在渗漏,墙底在5. 25米左右,该判断结果经开挖后得到验证。 May be determined that there is leakage at the depth of 3 m, a bottom wall of about 5.25 meters, the determination result is verified by the excavation.

Claims (5)

1. 一种防渗墙连续性检测方法,它采用下述步骤:一、在防渗墙2两侧分别钻供电电极孔(1)、测量电极孔(3),供电电极孔(1)、测量电极孔(3)均与防渗墙平行,供电电极孔(1)横向直径线与测量电极孔(3)横向直径线互为延长线且与防渗墙面垂直,供电电极孔(1)、测量电极孔(3)距防渗墙体的距离相等;二、在供电电极孔(1)内放置一对上下供电电极(A、B),在测量电极孔(3)内放置一对上下测量电极(M、N),上供电电极(A)与上测量电极(M)保持在同一水平面上,下供电电极(B)与下测量电极N保持在同一水平面上,上供电电极(A)与下供电电极(B)之间距离(AB) =上测量电极M与下测量电极(N)之间的距离(MN);供电电极和测量电极通过导线与地面主机连接;三、向供电电极孔(1)、测量电极孔(3)注满水;四、检测开始:自上而下或自下而上同步移动供 A cutoff wall continuity detection method using the following steps: First, the power supply cutoff wall 2 sides were drilled hole electrode (1), the measuring electrode hole (3), the supply electrode hole (1), measuring electrode holes (3) are parallel with the cutoff wall, the supply hole electrode (1) and the transverse diameter of the wire aperture measuring electrode (3) mutually transverse diametrical line and the extension line of the vertical cutoff wall surface, the supply electrode hole (1) measuring electrode hole (3) is equal to the distance from the cutoff wall body; Second, the power supply electrode hole (1) placing a supply of upper and lower electrodes (a, B) inside, placing a measurement of upper and lower electrodes in the hole (3) measuring electrodes (M, N), the power supply electrode (A) electrode (M) is maintained at the same level with the measuring, the lower supply electrode (B) a measuring electrode and a lower N remains at the same level, the power supply electrode (A) and measuring the distance between the lower electrode of the power supply (B) (AB) = M electrode distance between the electrodes (N) and the measured (the MN); and a power supply electrode wires and measuring the ground electrode via the host; Third, the power supply electrode the hole (1), the measuring electrode hole (3) filled with water; Fourth, detection start: top down or bottom for the synchronous mobile 电电极(A、B)和测量电极(M、N),每移动一次电极,地面主机取得一个两测量电极之间的电压Umn和供电电流I,根据电阻率公式P =KUm/1得到测点位置的电阻率P,以测量电极的电极连线中点作为测点位置,式中I为供电极电流、K=I ;五、作图,以测点位置为横坐标,以测点电阻率为纵坐标在坐标系中标出两者交点,将标出的点连接;六、分析判断:根据图中的漏电电阻率急剧升高时,判断为可判为墙体缺陷。 Electrodes (A, B) and measuring electrodes (M, N), each time moving electrode, made the ground voltage Umn host and a supply current I between the two measuring electrodes to obtain the resistivity measuring points according to the formula P = KUm / 1 resistivity position P, to the midpoint of the electrode connecting the measuring electrode as the measuring point, where I is the current of the power supply, K = I; V, plotted as the abscissa in measuring point to measuring point resistivity bid for the vertical axis in the coordinate system of the two intersection points, the connection point marked; six, analysis and judgment: the sharp increase in the resistivity of the drain drawing, the wall is determined to be judged as a defect.
2.根据权利要求1所述的防渗墙连续性检测方法,其特征在于:相邻两测点距为0. 2 〜1. 0 米。 2. The method of detecting the continuity of said cutoff wall according to claim 1, wherein: two adjacent measuring point is 0.2 ~ 1 0 m.
3.根据权利要求2所述的防渗墙连续性检测方法,其特征在于:供电电极孔(1)、测量电极孔(3)至防渗墙墙体的距离均为0. 2〜0. 3米。 3. The method of detecting the continuous cutoff wall according to claim 2, wherein: the power supply from an electrode hole (1), the measuring electrode holes (3) are impervious walls to 0. 2~0. 3 meters.
4.根据权利要求3所述的防渗墙连续性检测方法,其特征在于:供电电极孔(1)、测量电极孔(3)钻孔深度超过防渗墙深度,超出量为2〜4米。 4. The method of detecting the continuity of said cutoff wall according to claim 3, characterized in that: the supply electrode hole (1), the measuring electrode hole (3) drilled deeper than the depth cutoff wall, beyond the amount of 2 ~ 4 meters .
5.根据权利要求4所述的防渗墙连续性检测方法,其特征在于:供电电极孔(1)、测量电极孔(3)利用泥浆或清水护壁。 The cutoff wall continuity detecting method according to claim 4, characterized in that: the supply electrode hole (1), the measuring electrode hole (3) using the mud or water retaining wall.
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CN102998340A (en) * 2012-12-18 2013-03-27 成都发动机(集团)有限公司 Equipment and method for continuously detecting anode oxide film
CN103015467A (en) * 2012-12-25 2013-04-03 上海交通大学 Potential imaging method for detection of integrity of polymer impervious wall
CN105239609A (en) * 2015-10-16 2016-01-13 上海岩土工程勘察设计研究院有限公司 Underground continuous wall leakage detection method
CN105547616A (en) * 2016-01-25 2016-05-04 浙江广川工程咨询有限公司 Seeping hidden trouble detection and directional processing method and detection equipment for earth and rockfill dam
CN105604066A (en) * 2015-12-25 2016-05-25 天津市勘察院 Application of resistivity profiling method to detection of building foundation pit support structure water leakage

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