CN115165528A - A kind of magnetic self-aggregation slurry pressure relief and water blocking shear performance test method - Google Patents
A kind of magnetic self-aggregation slurry pressure relief and water blocking shear performance test method Download PDFInfo
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Abstract
本发明公开一种磁自聚浆液泄压堵水抗剪性能测试方法,包括:步骤1):采用一定磁力等级的磁性堵棒一端吸附一定配比的磁自聚浆液,然后封堵测压管出水端;步骤2):打开进水管上的阀门,打开泄压管上的泄压阀;步骤3):逐步调整压力调节阀,测量相应磁力等级磁性堵棒吸附一定配比磁自聚浆液后能够堵住的最大水压,获得泄压的水量数值;步骤4):测量步骤3)中最大水压状态下对应的磁性堵棒所受拉拔力数据;步骤5):更换磁性堵棒和磁自聚浆液,重复步骤1)至步骤4),得到泄压状态下堵水抗剪能力实验数据;本发明可以获取磁自聚浆液在泄压状态下的封堵压力及不同磁性堵棒和磁自聚浆液对应的堵水抗剪能力实验数据。
The invention discloses a method for testing the pressure-releasing and water-blocking shear performance of magnetic self-aggregation slurry. Water outlet; step 2): open the valve on the water inlet pipe, and open the pressure relief valve on the pressure relief pipe; step 3): gradually adjust the pressure regulating valve, measure the corresponding magnetic force level, and the magnetic blocking rod absorbs a certain proportion of magnetic self-aggregation slurry The maximum water pressure that can be blocked is obtained, and the value of the water volume for pressure relief is obtained; Step 4): Measure the pulling force data of the corresponding magnetic plugging rod under the maximum water pressure state in Step 3); Step 5): Replace the magnetic plugging rod and Magnetic self-aggregation slurry, repeat steps 1) to 4) to obtain the experimental data of water blocking and shear resistance under pressure relief state; the present invention can obtain the plugging pressure of magnetic self-aggregation slurry in the pressure relief state and different magnetic plugging rods and The experimental data of the water blocking shear capacity corresponding to the magnetic self-aggregation slurry.
Description
技术领域technical field
本发明涉及隧道及地下工程技术领域,具体地指一种磁自聚浆液泄压堵水抗剪性能测试方法。The invention relates to the technical field of tunnels and underground engineering, in particular to a method for testing the pressure relief and water blocking shear resistance of magnetic self-aggregation slurry.
背景技术Background technique
随着国民经济的增长,我国对于能源开发以及交通建设的需求越来越大,投入各种隧道工程的人力和资金组件增加,随着我国地下工程的大力建设,在修建隧道、水电站、跨流域调水以及深部矿山等地下工程中,由于其复杂的地质条件,常常诱发大量的地质灾害,施工难度大。其中以岩溶突涌水最为严重,岩溶管道内水体一般呈现有压状态,水量和水压都比较大,治理难度大,工程开挖时常常能够揭露大流量、高流速岩溶管道型涌水。如果灾害处理不当,会造成严重的后果。目前,在处理涌水现象时,可采用一种全新的磁自聚浆液堵水技术,运用新型磁自聚浆液,利用磁场磁化吸附作用,对涌水位置进行封堵,然而该技术尚在研究阶段,需测试研究不同磁力等级磁性堵棒吸附不同配比磁自聚浆液封堵出水端时的性能参数,以便工程实际应用推广,而且在进行堵水试验时,在泄压状态下的堵水试验并未见报道,需要研究磁自聚浆液在泄压状态下的封堵压力及不同磁性等级的磁性堵棒和不同配比的磁自聚浆液对应的堵水抗剪能力实验数据。With the growth of the national economy, my country's demand for energy development and transportation construction is increasing, and the manpower and capital components invested in various tunnel projects have increased. In underground projects such as water transfer and deep mines, due to their complex geological conditions, a large number of geological disasters are often induced, and the construction is difficult. Among them, the karst water inrush is the most serious. The water body in the karst pipeline is generally in a pressurized state, the water volume and water pressure are relatively large, and the treatment is difficult. During the excavation of the project, the karst pipeline type water inrush with large flow and high flow rate can often be exposed. If the disaster is not handled properly, it will cause serious consequences. At present, when dealing with the water gushing phenomenon, a brand-new magnetic self-aggregation slurry water plugging technology can be used, using a new type of magnetic self-aggregating slurry, and using magnetic field magnetization adsorption to block the water gushing position. However, this technology is still in the research stage. It is necessary to test and study the performance parameters of magnetic plugging rods with different magnetic force levels when they adsorb different proportions of magnetic self-aggregating slurry to block the water outlet, so as to facilitate the practical application of the project. No report has been reported, and it is necessary to study the plugging pressure of magnetic self-polymerization slurry in the pressure relief state and the experimental data of water blocking and shear resistance corresponding to magnetic plugging rods of different magnetic grades and magnetic self-polymerization slurry of different proportions.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于克服上述不足,提供一种磁自聚浆液堵水抗剪性能测试装置及测试方法,以测试研究不同磁力等级磁性堵棒吸附不同配比磁自聚浆液封堵出水端时的性能参数,获取磁自聚浆液在泄压状态下的封堵压力及不同磁性等级的磁性堵棒和不同配比的磁自聚浆液对应的堵水抗剪能力实验数据,以便工程实际应用推广。The object of the present invention is to overcome the above-mentioned deficiencies, provide a magnetic self-aggregation slurry water blocking shear performance testing device and testing method, to test and study the magnetic self-aggregation slurries of different magnetic force grades when the magnetic plugging rods adsorb different proportions of the magnetic self-aggregation slurries to block the water outlet. Performance parameters, obtain the plugging pressure of the magnetic self-aggregation slurry in the pressure relief state and the experimental data of the water blocking and shear resistance corresponding to the magnetic plugging rods of different magnetic grades and the magnetic self-aggregation slurry of different proportions, so as to facilitate the practical application of the project.
本发明为解决上述技术问题,所采用的技术方案是:一种磁自聚浆液泄压堵水抗剪性能测试方法,它包括如下步骤:In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is: a method for testing the pressure relief, water blocking and shear resistance performance of magnetic self-polymerizing slurry, which comprises the following steps:
步骤1):采用一定磁力等级的磁性堵棒一端吸附一定配比的磁自聚浆液,然后封堵测压管出水端,再将磁性堵棒另一端通过拉拔杆与测压管端部固设的环形紧箍固定连接,使得磁性堵棒和吸附的磁自聚浆液位置固定;Step 1): Use one end of a magnetic blocking rod with a certain magnetic force level to absorb a certain proportion of magnetic self-aggregation slurry, then block the water outlet end of the pressure measuring tube, and then fix the other end of the magnetic blocking rod with the end of the pressure measuring tube through a drawing rod. The set annular clamp is fixedly connected, so that the position of the magnetic blocking rod and the adsorbed magnetic self-aggregation slurry is fixed;
步骤2):打开进水管上的阀门,打开泄压管上的泄压阀,向集水箱内连续供水,水沿着出水管进入测压管内,并从泄压管流出进入到量筒内,通过压力调节阀调整测压管进水端的压力;Step 2): Open the valve on the water inlet pipe, open the pressure relief valve on the pressure relief pipe, and continuously supply water to the water collecting tank. The water enters the pressure measuring pipe along the water outlet pipe, and flows out from the pressure relief pipe into the measuring cylinder. The pressure regulating valve adjusts the pressure at the inlet end of the pressure measuring tube;
步骤3):逐步调整压力调节阀,使得测压管进水端的压力逐渐增大,通过测压管出水端的第三电子测压计测量相应磁力等级磁性堵棒吸附一定配比磁自聚浆液后能够堵住的最大水压,即一旦所测堵水压力跌落则此次封堵结束,该最大水压即为该试验条件下的磁自聚浆液在泄压状态下的封堵压力,统计流量计、量筒和电子秤的数据,获得泄压的水量数值;Step 3): Gradually adjust the pressure regulating valve to gradually increase the pressure at the water inlet end of the pressure measuring tube, and measure the corresponding magnetic level through the third electronic pressure gauge at the water outlet end of the pressure measuring tube. The maximum water pressure that can be blocked, that is, once the measured water blocking pressure drops, the blocking will end. The maximum water pressure is the blocking pressure of the magnetic self-aggregation slurry in the pressure relief state under the test conditions, and the statistical flow rate The data of the meter, measuring cylinder and electronic scale to obtain the water volume value of pressure relief;
步骤4):通过拉力计测量步骤3)中最大水压状态下对应的磁性堵棒所受拉拔力数据,用于后期试验数据分析;Step 4): measure the pulling force data of the corresponding magnetic blocking rod under the maximum water pressure state in step 3) by a tension meter, for later test data analysis;
步骤5):更换不同磁性等级的磁性堵棒和按照不同比例配置磁自聚浆液,重复步骤1)至步骤4),得到泄压状态下堵水抗剪能力实验数据。Step 5): replace the magnetic plugging rods with different magnetic grades and configure the magnetic self-aggregation slurry according to different proportions, repeat steps 1) to 4), and obtain the experimental data of water blocking and shear resistance under the pressure relief state.
优选地,所述集水箱一端与进水管连接,另一端通过出水管与测压管一端进水口可拆卸地连接,所述测压管另一端出水口位置与磁性堵棒一端部封堵配合,所述磁性堵棒与测压管封堵配合的位置处磁力吸附有磁自聚浆液,所示磁性堵棒另一端通过拉拔杆与测压管端部固定连接,拉拔杆上设有拉力计。Preferably, one end of the water collecting tank is connected with the water inlet pipe, the other end is detachably connected with the water inlet of one end of the pressure measuring pipe through the water outlet pipe, and the position of the water outlet at the other end of the pressure measuring pipe is blocked and matched with one end of the magnetic blocking rod, The magnetic self-aggregation slurry is magnetically adsorbed at the position where the magnetic plugging rod is matched with the pressure measuring tube, and the other end of the magnetic plugging rod is fixedly connected to the end of the pressure measuring tube through a drawing rod, and the drawing rod is provided with a pulling force count.
优选地,所述集水箱一端通过补压管与氮气补压瓶连接,所述出水管还与降压管连接,降压管上设有降压阀。Preferably, one end of the water collecting tank is connected to a nitrogen supplementary pressure bottle through a pressure supplementary pipe, and the water outlet pipe is also connected to a pressure reduction pipe, and a pressure reduction valve is provided on the pressure reduction pipe.
优选地,所述磁性堵棒内部中空且穿设有泄压管,所述泄压管上设有泄压阀。Preferably, the inside of the magnetic blocking rod is hollow and is provided with a pressure relief pipe, and the pressure relief pipe is provided with a pressure relief valve.
优选地,所述泄压管末端伸入到量筒内,量筒搁置于电子秤上,泄压管上设置流量计。Preferably, the end of the pressure relief pipe extends into the measuring cylinder, the measuring cylinder is placed on the electronic scale, and the pressure relief pipe is provided with a flow meter.
优选地,所述磁性堵棒另一端通过拉拔杆与测压管端部固设的环形紧箍固定连接。Preferably, the other end of the magnetic blocking rod is fixedly connected to the annular tightening hoop fixed at the end of the pressure measuring tube through a drawing rod.
优选地,所述集水箱上设有第一电子测压计,所述出水管上设有第二电子测压计,所述测压管出水端上设有第三电子测压计。Preferably, the water collecting tank is provided with a first electronic pressure gauge, the water outlet pipe is provided with a second electronic pressure gauge, and the water outlet end of the pressure gauge is provided with a third electronic pressure gauge.
优选地,所述测压管进水端还设有压力调节阀和第四电子测压计。Preferably, the water inlet end of the pressure measuring tube is further provided with a pressure regulating valve and a fourth electronic pressure gauge.
优选地,所述磁自聚浆液为油性环氧树脂磁自聚浆液或水性环氧树脂磁自聚浆液,所述油性环氧树脂磁自聚浆液包括环氧树脂A胶、环氧树脂固化剂、粉煤灰和四氧化三铁粉末;所述水性环氧树脂磁自聚浆液包括环氧树脂乳液、环氧树脂固化剂、水泥、水和四氧化三铁粉末。Preferably, the magnetic self-polymerization slurry is oily epoxy resin magnetic self-polymerization slurry or water-based epoxy resin magnetic self-polymerization slurry, and the oily epoxy resin magnetic self-polymerization slurry includes epoxy resin A glue, epoxy resin curing agent , fly ash and ferric oxide powder; the water-based epoxy resin magnetic self-polymerization slurry includes epoxy resin emulsion, epoxy resin curing agent, cement, water and ferric oxide powder.
本发明的有益效果:Beneficial effects of the present invention:
1、本发明方法可以测试研究不同磁力等级磁性堵棒吸附不同配比磁自聚浆液封堵出水端时的性能参数,获取磁自聚浆液在泄压状态下的封堵压力及不同磁性等级的磁性堵棒和不同配比的磁自聚浆液对应的堵水抗剪能力实验数据,利于工程实际的应用推广;1. The method of the present invention can test and study the performance parameters of magnetic blocking rods of different magnetic force levels when adsorbing different proportions of magnetic self-aggregation slurries to block the water outlet, and obtain the plugging pressure of magnetic self-aggregation slurries under the pressure relief state and the magnetic self-aggregation slurries of different magnetic grades. The experimental data of water blocking and shear resistance corresponding to magnetic plugging rods and magnetic self-aggregation slurries with different ratios are beneficial to the application and promotion of practical engineering;
2、本发明设计的测试装置可模拟各种隧道等地下工程的突水工况的水压力场,其测试数据更贴近工程实际。2. The test device designed in the present invention can simulate the water pressure field of various tunnels and other underground engineering under water inrush conditions, and its test data is closer to the actual engineering.
3、本发明的测试装置提出在磁性堵棒内部穿设泄压管的全新方案,在工程实际应用中,可以通过泄压管的设计,进一步提高磁性堵棒吸附磁自聚浆液封堵出水端的堵水性能,使得其封堵能力和封堵时效性大幅提升,泄压堵水机制的引入可使得磁自聚浆液的工程应用价值大幅增加。3. The test device of the present invention proposes a new scheme of piercing the pressure relief pipe inside the magnetic plugging rod. In practical engineering applications, the design of the pressure relief pipe can further improve the ability of the magnetic plugging rod to absorb the magnetic self-aggregation slurry to block the water outlet. The water blocking performance greatly improves its blocking ability and plugging timeliness. The introduction of the pressure relief and water blocking mechanism can greatly increase the engineering application value of the magnetic self-aggregation slurry.
4、本发明可综合磁粉(四氧化三铁粉末)掺量,聚灰比、水灰比等材料配比的多种参数耦合作用对磁自聚浆液的堵水性能测试,其具有极好的适用性和创新性,兼具材料配比和试验测试装置一体化的技术,其操作简便,成本低,耗资少,灵活方便,应用广泛,更重要的可推广于多数突水工况的模拟,获取浆液堵水能力参数,对指导磁自聚浆液的施工和广泛应用具有绝佳的工程价值和学术价值。4. The present invention can comprehensively test the water blocking performance of magnetic self-aggregation slurry by the coupling effect of various parameters such as the content of magnetic powder (iron tetroxide powder), the ratio of aggregated ash, the ratio of water and ash, etc., and it has excellent performance. Applicability and innovation, combined with the technology of material ratio and test equipment integration, it is easy to operate, low cost, low cost, flexible and convenient, widely used, and more importantly, it can be extended to the simulation of most water inrush conditions. Obtaining the parameters of slurry water blocking ability has excellent engineering value and academic value for guiding the construction and wide application of magnetic self-aggregation slurry.
附图说明Description of drawings
图1为一种磁自聚浆液堵水抗剪性能测试装置的结构示意图;Fig. 1 is the structural representation of a kind of magnetic self-aggregation slurry water blocking shear performance testing device;
图2为测压管出水端所在区域的放大结构示意图;Fig. 2 is the enlarged structural schematic diagram of the area where the water outlet end of the piezometer is located;
图3为磁性堵棒吸附的磁自聚浆液自聚状态实物图;Fig. 3 is the actual picture of the self-aggregation state of the magnetic self-aggregation slurry adsorbed by the magnetic plugging rod;
图4为磁自聚浆液磁化封堵自聚状态示意图。FIG. 4 is a schematic diagram of the state of magnetic self-aggregation slurry magnetization plugging self-aggregation.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明作进一步的详细描述。The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
如图1至4所示为本实施例提供的一种磁自聚浆液堵水抗剪性能测试装置,它包括进水管1和与进水管1连接的集水箱2,所述集水箱2通过出水管3与测压管4一端进水口可拆卸地连接,所述测压管4另一端出水口位置与磁性堵棒5一端部封堵配合,所述磁性堵棒5与测压管4封堵配合的位置处磁力吸附有磁自聚浆液6,所示磁性堵棒5另一端通过拉拔杆7与测压管4端部固定连接,拉拔杆7上设有拉力计8。As shown in Figures 1 to 4, a magnetic self-aggregation slurry water blocking and shear resistance testing device provided in this embodiment includes a water inlet pipe 1 and a
优选地,所述集水箱2一端通过补压管9与氮气补压瓶10连接,所述出水管3还与降压管11连接,降压管11上设有降压阀12。在本实施例中,若集水箱2内水压不足,可以打开氮气补压瓶10,通过补压管9向集水箱2内通入氮气,从而实现增压过程,这样可以模拟各种地下突水工况不同水压大小。Preferably, one end of the water collecting
优选地,所述磁性堵棒5内部中空且穿设有泄压管13,所述泄压管13上设有泄压阀14。通过增加泄压管13,可以进一步提高磁性堵棒5吸附磁自聚浆液6封堵出水端的堵水性能,例如在工程实际应用过程中,在利用磁性堵棒5吸附磁自聚浆液6封堵出水端的初期,可以先打开泄压管13上的泄压阀14,卸掉部分水压,这样便可以减小过大的水压对磁自聚浆液6位置的压力,待磁自聚浆液6完全凝固后,再关闭泄压管13上的泄压阀14,这样便可以完全封堵出水端。Preferably, the
优选地,所述泄压管13末端伸入到量筒15内,量筒15搁置于电子秤16上,泄压管13上设置流量计23。通过泄压管13泄掉的水量可以通过量筒15量取其体积,通过流量计23获取流量数据,也可以通过电子秤16获取其重量数据。Preferably, the end of the
优选地,所述磁性堵棒5另一端通过拉拔杆7与测压管4端部固设的环形紧箍17固定连接。Preferably, the other end of the
优选地,所述集水箱2上设有第一电子测压计18,所述出水管3上设有第二电子测压计19,所述测压管4出水端上设有第三电子测压计20。Preferably, the
优选地,所述测压管4进水端还设有压力调节阀21和第四电子测压计22。Preferably, a
优选地,所述磁自聚浆液6为油性环氧树脂磁自聚浆液或水性环氧树脂磁自聚浆液,所述油性环氧树脂磁自聚浆液包括环氧树脂A胶、环氧树脂固化剂、粉煤灰和四氧化三铁粉末;所述水性环氧树脂磁自聚浆液包括环氧树脂乳液、环氧树脂固化剂、水泥、水和四氧化三铁粉末。Preferably, the magnetic self-polymerizing
在本实施例中,油性环氧树脂磁自聚浆液优势性能为:固化速度快,可在30~120min快速凝固;不溶于水,材料自身憎水性好,具备绝佳的抗分散性能;高渗透性、可注性佳,可渗入0.1mm裂隙;收缩性低:具备固化成型与承载面完全接触,收缩性小于2%;高强早强:1天抗压强≥50Mpa,可提供大大优于水泥基材料的抗压强度;抗蠕变性能好:-50℃至+80℃冻融交替等恶劣物理工况下长期使用而无塑性变形;韧性高:可化解传递来的任何可能使水泥基灌浆层爆裂的动荷载;该类材料适用于局部小范围的小孔高压的集中突水工况,也可推广适用于各类构筑物和建筑物的裂缝及缺陷补强修复,适用范围广泛,工程应用前景广阔。In this embodiment, the advantageous properties of the oil-based epoxy resin magnetic self-polymerization slurry are: fast curing speed, which can be quickly solidified within 30-120 minutes; insoluble in water, the material itself has good hydrophobicity, and excellent anti-dispersion performance; high permeability Good performance and injectability, can penetrate into 0.1mm cracks; low shrinkage: complete contact between curing molding and bearing surface, shrinkage less than 2%; high strength and early strength: 1 day compressive strength ≥ 50Mpa, can provide much better than cement The compressive strength of the base material; good creep resistance: long-term use without plastic deformation under harsh physical conditions such as -50°C to +80°C freeze-thaw alternation; high toughness: it can dissolve any transmitted cement-based grouting The dynamic load of layer burst; this kind of material is suitable for the concentrated water inrush condition of local small-scale small holes and high pressure, and can also be applied to the reinforcement and repair of cracks and defects in various structures and buildings. It has a wide range of applications and engineering applications. bright future.
水性环氧树脂磁自聚浆液优势性能为:造价成本低廉,用量大,使其可适用于大面积的浇筑和应用;材料黏度可根据水灰比、聚灰比、磁粉掺量进行比例调控,使得磁自聚功能的调节阈值增大;对固化环境的要求较低,在潮湿有水环境下与基底材料粘结效果大幅较于普通浆液可大幅增强,使其磁自聚浆液力学性能的可控范围广泛;该类材料性价比高,应用范围广泛,可推广适用于任何隧道及地下工程的抗渗和突水治理,及稳定性良好,磁自聚性能的张性优势突显。The advantages of water-based epoxy resin magnetic self-polymerizing slurry are: low cost and large dosage, making it suitable for large-scale pouring and application; material viscosity can be proportionally adjusted according to water-cement ratio, poly-ash ratio, and magnetic powder content. The adjustment threshold of the magnetic self-aggregation function is increased; the requirements for the curing environment are lower, and the bonding effect with the base material in a humid and water environment can be greatly enhanced compared with ordinary slurries, making the mechanical properties of the magnetic self-aggregation slurries more acceptable. Wide range of control; this kind of material is cost-effective and has a wide range of applications. It can be applied to any tunnel and underground engineering for impermeability and water inrush treatment. It has good stability and outstanding magnetic self-aggregation properties.
另外本实施例还公开上述磁自聚浆液堵水抗剪性能测试装置的堵水测试方法,它包括如下步骤:In addition, this embodiment also discloses the water blocking test method of the above-mentioned magnetic self-aggregation slurry water blocking and shear performance testing device, which comprises the following steps:
步骤1):采用一定磁力等级的磁性堵棒5一端吸附一定配比的磁自聚浆液6,然后封堵测压管4出水端,再将磁性堵棒5另一端通过拉拔杆7与测压管4端部固设的环形紧箍17固定连接,使得磁性堵棒5和吸附的磁自聚浆液6位置固定;Step 1): Use one end of a
步骤2):打开进水管1上的阀门,关闭泄压管13上的泄压阀14,向集水箱2内连续供水,水沿着出水管3进入测压管4内,通过压力调节阀21调整测压管4进水端的压力;Step 2): Open the valve on the water inlet pipe 1, close the
步骤3):逐步调整压力调节阀21,使得测压管4进水端的压力逐渐增大,通过测压管4出水端的第三电子测压计20测量相应磁力等级磁性堵棒5吸附一定配比磁自聚浆液6后能够堵住的最大水压,即一旦所测堵水压力跌落则此次封堵结束,该最大水压即为该试验条件下的磁自聚浆液封堵压力;Step 3): gradually adjust the
步骤4):通过拉力计8测量步骤3)中最大水压状态下对应的磁性堵棒5所受拉拔力数据,用于后期试验数据分析;Step 4): measure the pulling force data of the corresponding
步骤5):更换不同磁性等级的磁性堵棒5和按照不同比例配置磁自聚浆液6,重复步骤1)至步骤4),得到堵水抗剪能力实验数据。Step 5): replace the magnetic plugging
本实施例公开的一种磁自聚浆液泄压堵水抗剪性能测试方法,它包括如下步骤:This embodiment discloses a method for testing the pressure relief and water blocking shear performance of magnetic self-polymerizing slurry, which includes the following steps:
步骤1):采用一定磁力等级的磁性堵棒5一端吸附一定配比的磁自聚浆液6,然后封堵测压管4出水端,再将磁性堵棒5另一端通过拉拔杆7与测压管4端部固设的环形紧箍17固定连接,使得磁性堵棒5和吸附的磁自聚浆液6位置固定;Step 1): Use one end of a
步骤2):打开进水管1上的阀门,打开泄压管13上的泄压阀14,向集水箱2内连续供水,水沿着出水管3进入测压管4内,并从泄压管13流出进入到量筒15内,通过压力调节阀21调整测压管4进水端的压力;Step 2): Open the valve on the water inlet pipe 1, open the
步骤3):逐步调整压力调节阀21,使得测压管4进水端的压力逐渐增大,通过测压管4出水端的第三电子测压计20测量相应磁力等级磁性堵棒5吸附一定配比磁自聚浆液6后能够堵住的最大水压,即一旦所测堵水压力跌落则此次封堵结束,该最大水压即为该试验条件下的磁自聚浆液在泄压状态下的封堵压力,统计流量计23、量筒15和电子秤16的数据,获得泄压的水量数值;Step 3): gradually adjust the
步骤4):通过拉力计8测量步骤3)中最大水压状态下对应的磁性堵棒5所受拉拔力数据,用于后期试验数据分析;Step 4): measure the pulling force data of the corresponding
步骤5):更换不同磁性等级的磁性堵棒5和按照不同比例配置磁自聚浆液6,重复步骤1)至步骤4),得到泄压状态下堵水抗剪能力实验数据。Step 5): replace the magnetic plugging
本实施例中,可选择合适的泄压量作为定值,然后以不同磁性等级的磁性堵棒5和按照不同比例配置磁自聚浆液6按照上述步骤得到泄压状态下堵水抗剪能力实验数据的具体表格数据如下:In this embodiment, an appropriate pressure relief amount can be selected as the fixed value, and then the water blocking shear resistance experiment under pressure relief state is obtained by using the magnetic plugging
表1:油性环氧树脂磁自聚浆液堵水性能测试配合比设计表Table 1: Mixing ratio design table for water blocking performance test of oil-based epoxy resin magnetic self-polymerizing slurry
表2:水性环氧树脂磁自聚浆液配合比设计表Table 2: Design table of water-based epoxy resin magnetic self-polymerizing slurry mix ratio
表3:油性环氧树脂磁自聚浆液堵水性能测试结果Table 3: Test results of water blocking performance of oil-based epoxy resin magnetic self-polymerizing slurry
表4:水性环氧树脂堵水性能测试结果Table 4: Water blocking performance test results of water-based epoxy resin
由表3和表4可知,两类环氧树脂磁自聚浆液堵水压力与磁场强度之间存在明显的递增关系。①油性环氧树脂磁自聚浆液在磁粉掺量为40%时,高斯强度为12000GS达到最大堵水压力水头为81Kpa。但随着磁粉掺量的继续增加,堵水峰值水头压力开始逐渐跌落,原因磁粉掺量的增加,浆液中磁化颗粒含量增多,不均匀磁化作用增强,致使环氧树脂浆液基液包裹的磁粉颗粒之间分子作用力增加,颗粒逐渐从包裹体中离析出来,颗粒之间没有环氧树脂基液包裹,颗粒之间间隙增大,浆液出现堵水薄弱区,宏观上表现为堵水压力峰值水头下降。It can be seen from Table 3 and Table 4 that there is an obvious increasing relationship between the water blocking pressure of the two types of epoxy resin magnetic self-polymerization slurries and the magnetic field strength. ①When the magnetic self-polymerizing slurry of oil-based epoxy resin is 40% of the magnetic powder, the Gaussian strength is 12000GS, and the maximum water blocking pressure is 81Kpa. However, with the continuous increase of the amount of magnetic powder, the peak water head pressure of water plugging began to drop gradually. Because of the increase of the amount of magnetic powder, the content of magnetized particles in the slurry increased, and the uneven magnetization increased, resulting in the magnetic powder particles wrapped in the epoxy resin slurry base liquid. The molecular force between the particles increases, and the particles gradually separate from the inclusions. There is no epoxy resin base liquid between the particles, and the gap between the particles increases. decline.
②水性环氧树脂的堵水压力的变化受控聚灰比、水灰比和磁粉掺量等因素影响,随着磁粉掺量的增加,堵水压力峰值水头值的变化趋势与之呈递增关系,但水灰比对堵水压力的影响显著,当水灰比为0.2时,磁粉掺量30%时由于黏度过大,浆液无团聚吸附能力,堵水失效。②The change of water blocking pressure of water-based epoxy resin is affected by factors such as controlled poly-ash ratio, water-cement ratio and magnetic powder content. , but the water-cement ratio has a significant effect on the water plugging pressure. When the water-cement ratio is 0.2 and the magnetic powder content is 30%, due to the excessive viscosity, the slurry has no agglomeration and adsorption capacity, and the water plugging fails.
可见,本发明可综合磁粉掺量,聚灰比、水灰比等材料配比的多种参数耦合作用对磁自聚浆液的堵水性能测试,其初步试验数据表明,该发明具有极好的适用性和创新性,兼具材料配比和试验测试装置一体化的技术。其操作简便,成本低,耗资少,灵活方便,应用广泛,更重要的可推广于任意突水工况的模拟,获取浆液堵水能力参数,对指导磁自聚浆液的施工和广泛应用具有绝佳的工程价值和学术价值。It can be seen that the invention can comprehensively test the water blocking performance of the magnetic self-aggregation slurry by the coupling effect of various parameters such as the content of magnetic powder, the ratio of polymer-ash ratio, and the ratio of water-cement ratio. The preliminary test data shows that the invention has excellent performance. Applicability and innovation, combined with the technology of material ratio and test equipment integration. It is easy to operate, low cost, low cost, flexible and convenient, widely used, and more importantly, it can be extended to the simulation of any water inrush conditions, and the parameters of the water blocking capacity of the slurry can be obtained. Excellent engineering value and academic value.
另外本发明提出了磁自聚浆液配合比是基于环氧树脂聚合改性浆液,将磁粉摻入使其具备创新性的磁性自汇聚能力,同时相比于普通砂浆其具备天然憎水性和良好抗分散性,对于水下施工注浆浆液胶凝材料损失率<5%。In addition, the present invention proposes that the mixing ratio of the magnetic self-aggregation slurry is based on the epoxy resin polymerization modified slurry, and the magnetic powder is added to make it have innovative magnetic self-aggregation ability. Compared with ordinary mortar, it has natural hydrophobicity and good resistance. Dispersibility, the loss rate of cementitious material for underwater construction grouting slurry is less than 5%.
最后本发明提出的磁自聚浆液堵水性能测试的装置和测试方法,是利用磁吸附作用,使浆液团聚结块,水泥、粉煤灰等颗粒及环氧树脂聚合物在磁场作用下受磁粉颗粒的分子间作用力影响,在内部生成坚硬的堆积沉淀,难以分散,内摩擦角增强,团聚吸附效果明显,磁吸附瞬间提升浆液黏度,较于普通浆液可在流体状态便可具备更强大的堵水抗剪能力。Finally, the device and method for testing the water blocking performance of magnetic self-aggregation slurry proposed by the present invention utilize magnetic adsorption to make the slurry agglomerate and agglomerate, and particles such as cement, fly ash, and epoxy resin polymers are subjected to magnetic Influenced by the intermolecular force of the particles, a hard accumulation precipitate is formed inside, which is difficult to disperse, the internal friction angle is enhanced, the agglomeration adsorption effect is obvious, and the magnetic adsorption instantly increases the viscosity of the slurry. Water blocking shear resistance.
上述的实施例仅为本发明专利的优选技术方案,而不应视为对于本发明的限制,本申请中的实施例及实施例中的特征在不冲突的情况下,可以相互任意组合。本发明专利的保护范围应以权利要求记载的技术方案,包括权利要求记载的技术方案中技术特征的等同替换方案为保护范围。即在此范围内的等同替换改进,也在本发明专利的保护范围之内。The above-mentioned embodiments are only the preferred technical solutions of the patent of the present invention, and should not be regarded as a limitation of the present invention. The embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict. The protection scope of the patent of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims as the protection scope. That is, equivalent replacements and improvements within this scope are also within the protection scope of the patent of the present invention.
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