技术领域technical field
本发明涉及一种用于水利工程领域水平铺膜防渗工程中试验设备，特别是一种土工膜气胀试验装置。The invention relates to a test device used in a horizontal film-laying anti-seepage project in the field of hydraulic engineering, in particular to a geomembrane inflation test device.
背景技术Background technique
为了解决部分平原地区无调蓄水库的问题，我国需要兴建大批的平原水库调蓄工程。在平原水库建设中，水库防渗是建设平原水库的关键技术问题。在平原水库防渗设计中，对于地质条件较差、缺乏理想不透水层的平原水库需要考虑库盘防渗方案，即水库底部整体水平防渗。在库盘铺膜防渗中，考虑经济因素，首选土工膜防渗。在土工膜库盘防渗中，膜下非饱和土中气体可引起膜体气胀破坏，导致水库漏水，影响水库的正常运营。In order to solve the problem of no regulation and storage reservoirs in some plain areas, my country needs to build a large number of plain reservoir regulation and storage projects. In the construction of plain reservoirs, reservoir seepage control is a key technical issue in the construction of plain reservoirs. In the anti-seepage design of plain reservoirs, for plain reservoirs with poor geological conditions and lack of ideal impermeable layers, it is necessary to consider the anti-seepage scheme of the storage plate, that is, the overall horizontal anti-seepage of the bottom of the reservoir. Considering economic factors, geomembrane anti-seepage is the first choice in the anti-seepage of the library plate. In the anti-seepage of geomembrane storage plate, the gas in the unsaturated soil under the membrane can cause the membrane body to expand and damage, resulting in water leakage of the reservoir and affecting the normal operation of the reservoir.
因此进行膜体材料气胀破坏试验、膜体材料透气性测试，以及膜体材料气胀破坏前、后的渗透试验具有重要的现实意义，目前还没有这样的专用设备。Therefore, it is of great practical significance to carry out the inflation failure test of the membrane material, the air permeability test of the membrane material, and the permeability test before and after the inflation failure of the membrane material. At present, there is no such special equipment.
发明内容Contents of the invention
本发明的目的是提供一种土工膜气胀试验装置，在水利工程领域水平铺膜防渗工程中，它可以进行膜体材料气胀破坏试验、膜体材料透气性测试，以及膜体材料气胀破坏前、后的渗透试验。The purpose of the present invention is to provide a geomembrane inflation test device, which can carry out the inflation failure test of the membrane material, the air permeability test of the membrane material, and the air permeability test of the membrane material in the horizontal membrane anti-seepage project in the field of hydraulic engineering Penetration test before and after swelling failure.
本发明解决其技术问题所采用的技术方案是：该种土工膜气胀试验装置，其特征是，包括带顶盖的膜上设备容器和带底座的膜下设备容器，二者之间相连接并有相贯通的通道，被测试模体材料位于膜上设备容器和膜下设备容器之间并将二者之间的通道分隔，所述的膜上设备容器内存有模拟膜上环境的上介质，所述的膜下设备容器内填满模拟膜下环境的下介质，所述的膜上设备容器底部设有与测试系统相连通的第一管阀接口和与试验用水源供给装置连通的第二管阀接口；所述的膜下设备容器底部设有与测试系统相连通的第三管阀接口和与排水系统连通的第四管阀接口；所述的膜上设备容器顶盖中间部位安装一排气或排水阀门。The technical solution adopted by the present invention to solve the technical problems is: the geomembrane inflation test device is characterized in that it comprises an equipment container on the membrane with a top cover and an equipment container under the membrane with a base, and the two are connected And there are interlinked passages, the material to be tested is located between the equipment container on the membrane and the equipment container under the membrane and separates the passage between the two, and the above-membrane equipment container has an upper medium that simulates the environment on the membrane , the under-membrane equipment container is filled with the lower medium for simulating the under-membrane environment, and the bottom of the above-membrane equipment container is provided with a first pipe valve interface communicated with the test system and a first pipe valve interface communicated with the test water source supply device. The second pipe valve interface; the bottom of the under-membrane equipment container is provided with a third pipe valve interface connected with the test system and a fourth pipe valve interface connected with the drainage system; the middle part of the top cover of the above-membrane equipment container is installed A vent or drain valve.
所述的试验用水源供给装置为一可升降的稳压水箱，它包括可升降的水箱体、设置在水箱体上的进水控制阀门和溢流口，水箱体与第二管阀接口之间通过软管连接。The test water source supply device is a liftable pressure-stabilized water tank, which includes a liftable water tank body, a water inlet control valve and an overflow port arranged on the water tank body, the water tank body and the second pipe valve The interfaces are connected by hoses.
本发明的有益效果是，该种装置在水利工程领域铺膜防渗工程中，可以方便地进行膜体材料气胀破坏试验、膜体材料透气性测试，以及膜体材料气胀破坏前、后的渗透试验；为水利工程防渗施工，提供了保障。The beneficial effect of the present invention is that this kind of device can conveniently carry out the inflation failure test of the membrane body material, the air permeability test of the membrane body material, and the before and after the inflation failure of the membrane body material in the membrane laying anti-seepage project in the field of water conservancy engineering. Penetration test; provides guarantee for anti-seepage construction of water conservancy projects.
附图说明Description of drawings
下面结合附图和实施方式对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
图1是本发明竖向剖面示意图.Figure 1 is a schematic diagram of a vertical section of the present invention.
图中，1膜体材料，2膜上设备容器，3顶盖，4膜下设备容器，5底座，6稳压水箱，7第一法兰，8第二法兰，9第一管阀接口，10第二管阀接口，11第三法兰，12第三管阀接口，13软管，14溢流口，15进水控制阀门，16第四管阀接口。In the figure, 1 membrane body material, 2 equipment container on the membrane, 3 top cover, 4 equipment container under the membrane, 5 base, 6 stabilized pressure water tank, 7 first flange, 8 second flange, 9 first pipe valve interface , 10 second pipe valve interface, 11 third flange, 12 third pipe valve interface, 13 hose, 14 overflow port, 15 water inlet control valve, 16 fourth pipe valve interface.
具体实施方式Detailed ways
在图1中，该种土工膜气胀试验装置，包括带顶盖3的膜上设备容器2和带底座5的膜下设备容器4，二者之间相连接并有相贯通的通道。In Fig. 1, this kind of geomembrane inflation test device includes an above-membrane equipment container 2 with a top cover 3 and an under-membrane equipment container 4 with a base 5, the two are connected and have a through passage.
所述的膜上设备容器2由圆柱筒状容器体、顶盖3及其附件组成，材质由钢、有机玻璃或其他硬质材料组成，该附件主要指第一法兰7和第二法兰8、连接测试设备的第一管阀接口9、连接试验用水源供给装置的第二管阀接口10等，第一法兰7和第二法兰8分别固焊在膜上设备容器2的圆柱筒状容器体的两端，顶盖3与第一法兰7相连，用于密封容器体或填充介质。所述的膜上设备容器2内存有模拟膜上环境的上介质，对于水利工程上介质为水，模拟膜体材料上部所承受的水体。The above-membrane equipment container 2 is composed of a cylindrical container body, a top cover 3 and its accessories. The material is made of steel, plexiglass or other hard materials. The accessories mainly refer to the first flange 7 and the second flange 8. Connect the first pipe valve interface 9 of the test equipment, the second pipe valve interface 10 connected to the test water source supply device, etc., the first flange 7 and the second flange 8 are respectively solidly welded on the cylinder of the equipment container 2 on the membrane At both ends of the cylindrical container body, the top cover 3 is connected with the first flange 7 for sealing the container body or filling the medium. The above-membrane equipment container 2 contains an upper medium for simulating the environment on the membrane. For water conservancy projects, the upper medium is water, simulating the water body that the upper part of the membrane material bears.
所述的试验用水源供给装置为一可升降的稳压水箱6，它包括可升降的水箱体、设置在水箱体上的进水控制阀门15和溢流口14，水箱体与第二管阀接口10之间通过软管13连接。水箱体设置在升降设备上，可以根据需要上升或下降，用于提供试验所需的具有稳定水头的水源。The test water source supply device is a liftable pressure-stabilized water tank 6, which includes a liftable water tank body, a water inlet control valve 15 and an overflow port 14 arranged on the water tank body, and the water tank body is connected to the first water tank body. The two pipe valve ports 10 are connected by a flexible pipe 13 . The water tank is set on the lifting device, which can be raised or lowered as required to provide a water source with a stable water head required for the test.
所述的膜下设备容器4由圆柱筒状容器、底座5及其附件组成，材质由钢、有机玻璃或其他硬质材料组成，该附件主要指第三法兰11、连接测试设备的第三管阀接口12、连接排水系统的第四管阀接口16等，膜下设备容器内填满模拟膜下环境的下介质，水利工程中该下介质为土、砂卵石等，模拟膜体材料下部土体。The sub-membrane equipment container 4 is composed of a cylindrical container, a base 5 and its accessories. The material is made of steel, plexiglass or other hard materials. The accessories mainly refer to the third flange 11 and the third flange 11 connected to the testing equipment. The pipe valve interface 12, the fourth pipe valve interface 16 connected to the drainage system, etc., the equipment container under the membrane is filled with the lower medium that simulates the environment under the membrane. In hydraulic engineering, the lower medium is soil, sand and pebbles, etc., and the lower part of the simulated membrane material Soil.
膜体材料1为气胀试验所需要检测的试验样品，位于膜上设备容器的第二法兰8与膜下设备容器的第三法兰11之间，各法兰中间为孔状通道，被测试模体材料1位于膜上设备容器2和膜下设备容器4之间并将二者之间的通道分隔，由紧固件将第二法兰8与第三法兰11紧固连接在一起。Membrane material 1 is the test sample that needs to be detected in the inflation test, and it is located between the second flange 8 of the equipment container on the membrane and the third flange 11 of the equipment container under the membrane. The test phantom material 1 is located between the equipment container 2 on the membrane and the equipment container 4 under the membrane and separates the passage between the two, and the second flange 8 and the third flange 11 are fastened together by fasteners .
所述的测试设备为外置式，通过第一管阀接口9和第三管阀接口12相连，它由测压管、孔隙水压计、孔隙气压计、水量量测仪器、监视设备，观测平台等组成，用于获得膜下或膜上所需的试验数据，如土体内部的孔隙气压力和孔隙水压力，膜体材料上部水头、膜体材料下部水头、水量，以及用于观测试验现象的摄像监测系统(包括水下摄像监测系统)。The test equipment is external, connected through the first pipe valve interface 9 and the third pipe valve interface 12, and it consists of piezometric tube, pore water pressure gauge, pore barometer, water measuring instrument, monitoring equipment, observation platform It is used to obtain the test data required under the membrane or on the membrane, such as the pore air pressure and pore water pressure inside the soil, the upper water head of the membrane material, the lower water head of the membrane material, the water volume, and the observation of the test phenomenon. Camera monitoring system (including underwater camera monitoring system).
平原水库气胀试验步骤：Plain reservoir inflation test steps:
一、膜体材料气胀破坏试验、膜体材料透气性测试步骤1. Inflatable damage test of membrane material and gas permeability test procedure of membrane material
第一步：将试验土样装入膜下设备容器4内，装土高度与第三法兰11齐平；The first step: put the test soil sample into the equipment container 4 under the membrane, and the soil filling height is flush with the third flange 11;
第二步：将膜体材料1放于第三法兰11之上，在膜体材料1与第三法兰11之间设有密封材料；Step 2: Put the membrane material 1 on the third flange 11, and provide a sealing material between the membrane material 1 and the third flange 11;
第三步：将膜上设备容器2吊装在膜下设备容器4之上，并使膜上设备容器2的第二法兰8压在膜体材料1和膜下设备容器之上，用螺栓将第二法兰8、膜体材料1和第三法兰11固定在一起；The third step: hoist the equipment container 2 on the membrane above the equipment container 4 under the membrane, and press the second flange 8 of the equipment container 2 on the membrane body material 1 and the equipment container under the membrane, and bolt the The second flange 8, the membrane body material 1 and the third flange 11 are fixed together;
第三步：将膜上稳压水箱的水箱体6固定在适当高的位置，并将水箱体用软管连接在第二管阀接口10上；Step 3: Fix the water tank body 6 of the pressure-stabilizing water tank on the membrane at an appropriate high position, and connect the water tank body to the second pipe valve interface 10 with a hose;
第四步：安装好进、排水系统，进水管接膜上稳压水箱的进水控制阀门15，出水管接排水系统的第四管阀接口16；Step 4: Install the water inlet and drainage systems, the water inlet pipe is connected to the water inlet control valve 15 of the stabilized water tank on the membrane, and the water outlet pipe is connected to the fourth pipe valve interface 16 of the drainage system;
第五步：将测试设备通过第一管阀接口9和第三管阀接口12与本装置相连；Step 5: Connect the test equipment to the device through the first pipe valve interface 9 and the third pipe valve interface 12;
第六步：布置好监测设备，以记录试验现象和试验数据；Step 6: Arrange monitoring equipment to record test phenomena and test data;
第七步：通过进水管将水送入水箱体内，气胀试验观测开始，记录膜上设备容器2内水压，并通过监测设备观察试验现象，记录测试试验设备；在试验过程中可通过膜上设备容器顶盖3上的排气或排水阀门将膜上设备容器2中的气排出。Step 7: Send water into the water tank through the water inlet pipe, start the inflation test observation, record the water pressure in the equipment container 2 on the membrane, observe the test phenomenon through the monitoring equipment, and record the test equipment; during the test, the membrane can be passed The air in the equipment container 2 on the membrane is discharged by the exhaust or drain valve on the upper equipment container top cover 3 .
第八步：持续进行气胀试验，直至膜体材料1产生气胀破坏；如不发生气胀破坏，维持一定时间试验，试验结束。Step 8: Continue to perform the inflation test until the membrane material 1 is damaged by inflation; if the inflation failure does not occur, continue the test for a certain period of time, and the test ends.
二、膜体材料透气性测试步骤2. Test steps for air permeability of membrane materials
膜体材料透气性测试同膜体材料气胀破坏试验，不同只是采用固定压力进行气胀试验，但不发生气胀破坏。The air permeability test of the membrane material is the same as the inflation failure test of the membrane material, the difference is that the inflation test is carried out with a fixed pressure, but the inflation failure does not occur.
三、膜体材料气胀破坏前、后的渗透试验步骤3. Permeation test steps before and after the membrane material is destroyed by inflation
膜体材料气胀破坏前、后的渗透试验与膜体材料气胀破坏试验的区别在于：进行渗透试验时，打开出水管接排水系统的第四管阀接口16，形成渗透通道，参照土工渗流试验的方法，采用固定水头法或变水头法，测量渗水量，计算渗透系数。The difference between the permeation test before and after the membrane material inflation and failure test and the membrane material inflation failure test is that when performing the penetration test, the fourth pipe valve interface 16 connecting the outlet pipe to the drainage system is opened to form a permeation channel. Refer to the geotechnical seepage The test method adopts the fixed water head method or the variable water head method to measure the water seepage and calculate the permeability coefficient.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110311437CN102507331B (en) | 2011-10-14 | 2011-10-14 | A geomembrane inflation test device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110311437CN102507331B (en) | 2011-10-14 | 2011-10-14 | A geomembrane inflation test device |
| Publication Number | Publication Date |
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| CN102507331A CN102507331A (en) | 2012-06-20 |
| CN102507331Btrue CN102507331B (en) | 2013-05-15 |
| Application Number | Title | Priority Date | Filing Date |
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| CN 201110311437Expired - Fee RelatedCN102507331B (en) | 2011-10-14 | 2011-10-14 | A geomembrane inflation test device |
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