| The first level hydropower station of jinping in the enrichment of the middle andlower reaches of river hydropower resources of the Yalong River, which is one of theleading reservoir cascade in the Yalong River Hydropower Planning, mainly for powergeneration, taking into account flood control and sediment retention with a highhead,discharge volume, steep slope, the characteristics of the narrow valley. Due to thelarge size of the Jinping I Hydropower Project, the characteristics of "asymmetric" inthe dam project design: the asymmetry of the dam site topography, the dam site ofcross-strait geological conditions of asymmetric arch size and stress asymmetry;construction conditions on the "Four and a deep" features: the mountains and canyons,high slope, high field stress, high pressure flow of groundwater and deep unloadingcracks. High-speed flow of the spillway works in the energy dissipation, and itsdownstream atomization precipitation affect the stability of cross-strait bank slope rock.When the structural surface charge and the water reaches a certain height, the rock islikely to occur instability. Thus the dam site area engineering slope stability problems(especially the left bank of the abutment slope) is the Jinping most prominent one of themajor engineering problems. Characteristics of the project, we intend to use thedistributed an chorage cable option to the left bank slope of the solid.With this end, we need to dispersion anchoring effect of this program do anassessment and provide a reference for future works, monitoring in front of theengineering practice. In order to better study the effect of distributed ANCHORAGECABLE generated by this project, we need to establish indoor3D geomechanicalmodel to study engineering prototype scaling simulations to indoor.The first level hydropower station of jinping anchor group effect geomechanicsphysical model test of the background, through model tests to establish the3Dgeomechanical model to study the Jinping Hydropower Station atomization slopedispersion ANCHORAGE CABLE effect. This thesis is focused on geomechanicalmodel test, ratio test of rock materials. Based on the actual situation of the hydropowerstation rock (rock mass rating and fractures, etc.) to develop the technical parameters(rock mass modulus of elasticity, ultimate compressive strength, bulk density, etc.). Themain parameters are: to simulate the material elastic modulus, ultimate compressive strength and bulk density. The right to choose a similar material is the key to the correctanalog engineering prototype, based on the status of research studies of similar material,to learn from previous experience, select the barite powder, quartz sand, water, gypsum,iron and rubber powder as a simulation of rock experimental material, the ratio test,obtained the test parameters of the ratio. And the experimental data analysis, andsummarizes a number of factors that affect the mechanical parameters of similarmaterial, and analyzed the impact of various factors on the test parameters of the lastregression analysis using SPSS software, elastic modulus, ultimate compressivestrength, bulk density obtained the return of relations between the various componentsof the three test materials, to develop such similar material with the design of the modelby the regression equation, rock analog design for the future use of similar material toprovide a better basis. The test findings are as follows:1.Similar material which is consist of barite powder, iron powder, quartz sand,rubber powder, gypsum, water is process simple, convenient in the production;2.The material can simulate the strength, density, elastic modulus range is a widerange of bulk density of2.48-2.76g/cm~3, adjustable elastic modulus E=0.1~0.9Gpa,the compressive strength range of3.26~10.8Mpa, the simulation requires a simulationof high bulk density, medium strength, low elastic modulus of the rock of similarmaterial, to meet the majority of the test.3.The test block compressive strength, elastic modulus with water cream, rubberpowder dosage increase and reduce the share of the sand a hundred weight, nonlinearrelationship between the quality of fine aggregate and coarse aggregate ratio, firstincreases and then decreases. The compressive strength of sand in the English share ofone hundred components to take20%up to maximum, then decreases gradually, whilethe elastic modulus at30%the maximum then begin to decline. Both also first with theincrease in the proportion of fine aggregate and coarse aggregate quality increases, bothin the fine coarse than the maximum of12or so, continues to increase, showed adecreasing trend. The proportion of the test block only with the proportion of water,cream, crumb rubber content increased linearly decreases; With the increase of the finecoarse than the linear growth; the change of the quartz sand less impact on theproportion of increased slightly.4.Using SPSS statistical software to establish the mathematical model of linearregression of proportion, compressive strength, elastic modulus, and to determine theregression equation:5.Determining use of such similar material model designing test mix proportion inthe future. |
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