In order to scientifically evaluate the thermal environment of the deep stope and its influencing factors, research was conducted on the thermal environment in Sanshandao Gold Mine, the theoretical calculations and structural analysis of heat release from 8 types of heat sources in the three sub-levels of -930 m, -945 m, and -960 m were carried out, and quantitative characterization was made on the influential degree of comprehensive heat release on the thermal environment, and it was clear that the heat release from the surrounding rock and mechanical and electrical equipment were the main parts at the deep mining site and the proportion of heat release from other heat sources is basically stable. Then, through the analysis of the influence factors of heat sources in the mining site, 17 evaluation indexes of the influence factors of the mining site thermal environment were sorted out, and the indexes’ weight was calculated based on the entropy weighting method, and it was learned that the largest weight of the influence on the thermal environment factors in a single excavation working face was the water gushing in the roadway. The TOPSIS method was used to comprehensively analyze and rank the thermal damage degree in the three middle sections. The results show that the degree of thermal damage in the -960 m is more severe than that in the -930 m and -945 m. This will provide some basic basis for the evaluation and prevention of thermal damage in deep mining projects, and is of great significance for improving mine production efficiency.
<p><strong>Objective: </strong>To observe the clinical effect of Toutongning capsule combined with Instant Cardio-reliever pills, metoprolol in the treatment of migraine. <strong>Method: </strong>150 cases of migraine were randomly divided into 3 groups, 50 cases in the treatment group. Using the headache Ning capsule combined with Instant Cardio-reliever pills, metoprolol treatment. The control group A50 cases, metoprolol combined with flunarizine hydrochloride treatment. The control group B50 cases, the application of the town of brain Ning capsule combined with quick acting to save the heart pill treatment, observation and comparison of 3 groups of migraine patients after treatment efficacy and symptom classification comparison. <strong>Results</strong><strong>: </strong>After treatment in January, the effect of migraine in treatment group was significantly higher than that of the two control group (<em>p</em> < 0.05), and the symptom grade of treatment group was significantly improved compared with that of control group (<em>p</em> < 0.01). <strong>Conclusion: </strong>Headache Ning capsule combined with Instant Cardio-reliever pills, metoprolol in the treatment of migraine has significant curative effect, effective control of headache and to improve the quality of life in patients with migraine, and the safety is high, not prone to side effects, provides a new way to cure the ills of migraine.</p>
The layered rock showed the characteristics in Mountain tunnel, Yunnan. A series of uniaxial compression tests and variable angle shear tests were carried out, and the aim was to investigate the effect of the bedding on its mechanical parameters and failure modes. The test results show that the uniaxial compressive strength, elastic modulus, and Poisson's ratio of layered rock present a U-shaped distribution with the increase in bedding orientation from 0° to 90°. All of them have a maximum when the bedding orientation is 0° and a minimum when the bedding orientation is 45°. The failure modes of layered rock can be summarized into three types: the fracture tensile failure parallel to the weak plane of bedding; the shear slip failure along bedding weak plane; and tension-shear composite failure between bedding weak plane and matrix. Based on the testing data and analysis results, it can be concluded that the layered rock specimen with different bedding orientations is an important reason for the anisotropy of mechanical parameters and failure modes.
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