The geological condition of K24 cutting slope of South Line of Jinan Belt Highway is complicated. The design of slope shape, stability analysis and comprehensive reinforcement design are described.
According to the investigation and test data of the largest and most typical accident of the mountain slope collapse and based on the analysis of causes resulted from the collapse,it mainly introduces the theory and calculation method of analyzing the mountain's shear strength parameters C andΦby using the random-fuzzy method and proposes the comprehensive reinforcement measures for the collapsed mountain.
Have built (structure) building materials commonly used technologies can be divided into foundation based widen technology, Shun - up technology, pile-up technology and the enhancement of technical skills and comprehensive reinforcement five categories.
Based on the design data of Longdu tainlings reservoir and on the analysis of the reinforcement characteristics of tailings stacked dam,a scheme of comprehensive reinforcement with geo grid as its main was proposed.
The Combined reinforcement system (CRS) Combines the strengths of roof bolting, resin-anchored cable bolt, and chemical grouting to effectively control the deformation of the strata surrounding an extremely poor entry.
Through studying the geologic engineering investigation results, reasons and processes of the deformations, and by making use of the slope stability analytic methods such as transmission coefficient method and two-dimensional finite element method, this paper analyzes the current stability situation of the slope, carries out a lot of calculations and puts forward a comprehensive strengthening scheme, i.e. frame beam with anchor stays + pressure grouting + machine-made brick protection + waterproof and drainage measures.
Because of its complicated reinforcement distribution, this truss plank is analysed and designed by simplified methods that neglect the contributions from a combined reinforcement truss mechanism and the design is over-conservative.
-the total length of a group of chambers in water and coal mixture hoisting station in Hebi No.4 hydraulic mine is 1,341 m, which were built at level of 58 to 75m below the floor of a coal seam. In order to extract 844,000 tons of coal from pillars above the combined reinforcement,a method including cement injection, cable anchorage and rock-bolting was applied. Cement injection was carried out for filling the void between the chambers and the surrounding rock, and 1,227 tons of cement was used, within the ...
The deforming-cracking mechanisms of strong pulling-apart in south-north direction, weak pulling-apart in east-west direction ,and anticlockwise rotation on the horizontal were been recognized after analysis of distribution of coal mined-out area, geopressure action on the roof, and rock body fracturing and deformation in last twenty yea's in this article. On the above analysis,the authors made a series of calculations and applied them to engineering design for controling the Lianzi Cliff dangerous rock bod...
In recent years,there was severe settlement and heave of the Yueyang to wer's foundation in large areas,and its retaining wall was pulled open and slided. As a result, a part of the to wer's foundation has begun to slide apparently. In this paper, on the basis of disease cause analysis and research, comprehensive consolidating schemes with anti slide piles are proposed This engineering was completed in May,1994. Having been experienced for two years, consolidating project effect...