To determine the anisotropic mechanical characteristics of carbonaceous slate at the Jinman Mine located in Lancang River Gorge, China, uniaxial compression, acoustic emission (AE) monitoring, and scanning electron microscopy (SEM) tests were conducted. The results show that stress loading directions and bedding effects have a significant impact on strain characteristics. The deformation of slate undergoes compaction, elastic, damage accumulation, and failure stages, and there are significant differences in strain paths. The mechanical properties of grey and carbonaceous slate have significant features, and variations of these properties of carbonaceous slate are more than that of grey slate. The discrete degree is significantly related to the direction of stress loading and different types of slate structures. The AE response intensity is related to the loading mode and slate type. A sudden increase in the AE cumulative ring number near peak stress indicates instability and rupture and is a precursor of rock rupture. The failure patterns and fracture characteristics are significantly correlated to the layered structure of the slate. Slates subjected to vertical loading and parallel loading conditions are dominated by shear fracture and tensile fracture, respectively. The peak strains of gray and carbonaceous slate correspond to brittle failure. The SEM tests indicate that slate samples subjected to parallel loading primarily show a tensile failure compared with slate samples subjected to vertical loading, with fractured sections being of lesser roughness, and scattered fractures and sections being smooth without obvious protrusions or cracks.

Taking the demolition blasting of complex structure of continuous multi-span aqueduct as the research object and combining with the importance analysis of safety factors in safety evaluation, the blasting scheme, reliability of electric blasting network, pretreatment quality, protection of buildings around the blasting area and safety protection are emphatically studied. The numerical model of aqueduct is established by LS-DYNA. Through the simulation analysis of the whole process of aqueduct blasting demolition and collapse, the blasting breakpoint and the design of pretreatment notch are reasonably determined. Carry out the equivalent electric blasting network test and field blasting test to check the reliability of the blasting network and determine the single hole charge. By the analysis and verification of safety parameters such as blasting shock wave, collapse vibration and safety distance, the active protective measures are taken to protect the important structures and public facilities within the blasting area. The blasting effect and monitoring data show that the safety technical measures can effectively control the safety risk of aqueduct blasting demolition.

The prosperous economic development and the investment and construction of several construction projects have substantially promoted the demands for talents in the engineering cost specialty. Nowadays the engineering cost specialty programs in many universities are faced with the strong applicability problem of specialized courses, and the teaching design for such specialized courses fails to meet the demands of the construction industry that enjoys high-speed development. A novel method to accurately evaluate the professional courses on the basis of the fuzzy analytic hierarchy process (FAHP) was proposed in this study. The weights of course evaluation indexes were determined by the FAHP, thus realizing the quantitative evaluation of course teaching quality. This study combined the teaching reform practice in analyzing the special characteristics of the engineering cost course. Based on the theory of outcomes-based education and multiple evaluation approaches, it established a closed-loop model for the progressive development of teaching management and expounded the evolutionary process and driving pattern of course teaching evaluation. Results demonstrate that an evaluation index system consisting of 22 evaluation indexes in 5 dimensions is suitable for the course, the teaching quality ratings can be quantified by this method, such as 81.43 points, and they can provide a certain reference for the course construction and teaching quality evaluation of this specialty. The proposed method provides a good prospect to optimize the teaching quality evaluation in the professional curriculums.

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