Study On The Stability Analysis And Matching Remediation Techniques Of Mine Slag Slope

The combination methods of field investigation, experimental research and literature retrieval wereused in this test, and the slope mining slag in Hebei was taken as an test example. The study wasconducted to ensure the classification system of slope mine slag and the probability of mining slag slopedisaster, to analyze the main factors influencing the slope stability of mining slag, and to exampleanalysis of the influence of rainfall factors; From two aspects of geotechnical engineering andvegetation ecological protective,the slag slope regulation methods were analyzed, and identified theslag control type, applicable conditions and scope, two types of slope protection technology of theapplicable situation were summarized in detail; Finally the various disaster probability type of miningslag slope corresponding matched the regulation technology,and an engineering example was verifingof that. The results prove that:(1)The mainly forms of slag slope destruction were creep, rill erosion and gully erosion, slump anddebris flow. The influence factors of slope mining slag mainly were slag slope position, the grades ofthe underlying surface of slag slope, slag slope degrees, geotechnical composition of underlying surfaceof slag slope, slope slag particles grading. The mining slag slopes were divided into gully slope type78,78kinds of gully slope type, slag slope26kinds of platform according to the5factors. According to thegrades of underlying surface of mining slag slope and the slope grades of mining slag, the slopes weredivided into three types: high frequency with72kinds, intermediate frequency60kinds, and50kinds oflow frequency.(2) This article qualitative on factors affecting the stability of slope slag were summarized.Themain influencing factors were: water, slag nature itself, the secondary factors are vegetation, earthquake.①Water are mainly composed of rainfall. Changed with time, the specific morphological changes onthe impact of rainfall on slope were classificated to four stages: Splash erosion, sheet erosion, gullyerosion and scouring to collapse.②slag nature itself: Slope, water content, particle composition,permeability, internal friction Angle, cohesive force, degree of consolidation, plasticity index, shearstrength, slope direction, slope, slope length of slope. Slag steep slope degrees, the water content, thegreater the mining slag slope instability. The smaller the soil particles, the greater the soil even relay, thegreater the ability of resistance to erosion of soil, the more is not easy to wash.③the vegetationcoverage rate is higher, the greater the stability of the slope.④the earthquake intensity is smaller, the smaller the impact on slope mining slag;(3)Divides the slope mining slag disposal technique into geotechnical engineering methods andecological vegetation restoration technology.①Geotechnical protective measures have constructingdrainage and catchwater,weight loss and back pressure, set up the retaining wall, the slag dam, theframework slope protection,GuFangBa and directing pickup; Ecological vegetation recovery technologyhave seeding, planting, Points ladder planting and the combination of vegetative bag vine plants, thecombination of the Framework slope protection and the grass.②When there are water residue upstream,slope can build drainage and intercepting drain;Cutting slope weight loss and the back pressure issuitable for the steep slope of slag.Framework slope protection and the retaining wall is suitable for theslope mining slag slope; the slag dam is suitable for the shade slope type; GuFangBa apply to The slagof the prone to debris flow. According to the different types of disaster probability slope mining slag,The article matches the corresponding matching.①The prevention and control measures of highfrequency class. Valleys class: constructing drainage, catchwater, sow seeding, planting vines in theupstream slope, building the slag dam in the downstream; Slope、platform class: weight loss and backpressure, the retaining wall, implementing the framework slope protection; Sow seeding、shrubs,、smalltrees, separating ladder planting. Planting vines at the downhill, small trees at the platform.②Theprevention and control measures of Intermediate class. Valleys class: Building drainage, waterdrainage ditches, sow seeding, planted vines, building block slag dam in the downstream; Slope、platform class: Cutting slope weight loss and back pressure, set up retaining wall;sow seeding, rowseeding shrubs, small trees,③The prevention and control measures of low class. Valleys class: Sowseed, planting vines, building block slag dam in the downstream; Slope、platform class: Set the retainingwall; sow seeding, planted vines at the downhill end, platform plant small trees.