Point load test is an effective method for obtaining the mechanical parameters of the rock.However,the theoretical basis of the test is not clear at present,which greatly limits its acceptability and application.There...Point load test is an effective method for obtaining the mechanical parameters of the rock.However,the theoretical basis of the test is not clear at present,which greatly limits its acceptability and application.Therefore,it is essential to find the theoretical solution for point load test and its testing results.To calculate the uniaxial compressive strength,tensile strength and elastic modulus of rocks,this paper establishes the quantitative relationship between point load strength and rock mechanical parameters based on the theory of elasticity mechanics.The point load tester was used to test 120 cylindrical basalt specimens,the thickness range of basalt is from 18 to 60 mm.Comparing the calculated results with the experimental results,it is found that the prediction error range of the proposed method is from 4%to 8%.The approach provides a new way for predicting the mechanical parameters of the rock.展开更多
The quality of designed structures embedded in rocks is strongly related to rock strength parameters of intact rock.Measuring different parameters from tests could be very expensive in designing phase of projects.Esti...The quality of designed structures embedded in rocks is strongly related to rock strength parameters of intact rock.Measuring different parameters from tests could be very expensive in designing phase of projects.Estimating some parameters from other ones can reduce costs and time of project procedure.In this paper,the relationships between static and dynamic parameters of marls are studied by using the single and multiple linear regressions.For this purpose,several marl core samples from Seydoon region,Khoozestan Province in Iran are collected and tested.Some equations with sufficient correlation have been obtained to predict the engineering parameters of marls,especially the uniaxial compressive strength(UCS).展开更多
基金supported by Major Project of the National Natural Science Foundation of China(Grant No.41831290)the Central Government’s Guidance Fund Projects for Local Science and Technology Development(No.2024ZY01041).
文摘Point load test is an effective method for obtaining the mechanical parameters of the rock.However,the theoretical basis of the test is not clear at present,which greatly limits its acceptability and application.Therefore,it is essential to find the theoretical solution for point load test and its testing results.To calculate the uniaxial compressive strength,tensile strength and elastic modulus of rocks,this paper establishes the quantitative relationship between point load strength and rock mechanical parameters based on the theory of elasticity mechanics.The point load tester was used to test 120 cylindrical basalt specimens,the thickness range of basalt is from 18 to 60 mm.Comparing the calculated results with the experimental results,it is found that the prediction error range of the proposed method is from 4%to 8%.The approach provides a new way for predicting the mechanical parameters of the rock.
文摘The quality of designed structures embedded in rocks is strongly related to rock strength parameters of intact rock.Measuring different parameters from tests could be very expensive in designing phase of projects.Estimating some parameters from other ones can reduce costs and time of project procedure.In this paper,the relationships between static and dynamic parameters of marls are studied by using the single and multiple linear regressions.For this purpose,several marl core samples from Seydoon region,Khoozestan Province in Iran are collected and tested.Some equations with sufficient correlation have been obtained to predict the engineering parameters of marls,especially the uniaxial compressive strength(UCS).
