Application Of Electrochemical Reinforcement Technology In Coal Mine Slope

Mudstone is a relatively common lithology in the sedimentary strata of open-pit coal mines.Because mudstone contains a large amount of clay-like silicate substances,which have a strong suction force for water molecules,mudstone has stronger lithology than other lithologies.The hydrophilicity of the mudstone causes the water softening characteristics of mudstone.This kind of self-softness often has an adverse effect on the slope,especially in the open-pit mine slope accident.Therefore,solving the mudstone water content problem has become an improvement in some open-pit coal mines.The key point of slope stability.This article proposes electrokinetic chemical reinforcement technology.As a new foundation reinforcement method,electrokinetic chemical reinforcement can not only effectively discharge the water content in the soil,but also modify the soil to improve the strength of the soil,especially for cohesive soils.Has a more significant effect.In this paper,a field test was conducted on an isolated island in the east of Baiyinhua No.3 Mine.Six sets of tests were designed on site.Different types of chemical slurries were injected at different times and locations.After the test,the electrochemical reinforcement indicators were analyzed,and the samples were analyzed after the test.The influence of different factors on the reinforcement effect,and the following conclusions are drawn:1.The test results show that injecting a large amount of calcium chloride into the anode in a short time will cause a huge increase in the current,and the change rule is consistent with the test group with normal calcium chloride,resulting in a large current state during most of the test.Directly increase the energy consumption required for the test.2.After dividing the total energy consumption into electroosmosis energy consumption and grouting reinforcement energy consumption,it is found that the test energy consumption has nothing to do with the diameter of the reinforced soil,but only related to the output current of the power supply.The energy consumption per unit of soil is gradually reduced as the reinforcement diameter increases.After dividing the total reinforcement time into electroosmotic reinforcement time and grouting reinforcement time,it is found that the experimental reinforcement time increases as the reinforcement diameter increases.In addition to the reinforcement diameter,it also affects the current increase.3.After the test,the cohesion of the soil has improved in different degrees compared with that before the test.In the experiment,a large number of ions were injected to generate more cementitious substances such as CSH under certain conditions.These cementitious substances are filled in the pores of the soil to increase the strength of the soil,enhance the durability of the soil,and improve the impermeability of the soil.Enhance the effective period of reinforcement.This test has achieved good reinforcement results and analyzed the characteristics of electrochemical reinforcement index changes and the factors affecting the reinforcement effect in the test,hoping to provide a new,efficient,convenient and economical treatment method for soft rock slope treatment.