Guizhou Xinlian Blasting Engineering Group Co.

Guiyang, China

Guizhou Xinlian Blasting Engineering Group Co.

Guiyang, China

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Tao T.J.,Guizhou Xinlian Blasting Engineering Group Co. | Tao T.J.,Wuhan University of Technology | Zhang J.H.,Wuhan University of Technology | Chi E.,Guizhou Xinlian Blasting Engineering Group Co. | And 2 more authors.
Advanced Materials Research | Year: 2014

In order to resolve the uncertainty problem of influence factors in effect evaluation of bench blasting, the effect evaluation model of bench blasting based on uncertainty measurement theory was built, then this model was used to evaluate the bench blasting effect in Hongshuitai flat engineering. The evaluation results show that: the information entropy and confidence identifying criterion were respectively used to ascertain the evaluation index weight and identifying criterion, by these ways, the evaluation results of this model are more objective; and the evaluation index can be selected flexibly according to actual situation, the calculation of evaluation model is simple, so the evaluation results can offer decision basis for blasting workers to make timely adjustment of the blasting scheme. © (2014) Trans Tech Publications, Switzerland.


Cui X.-J.,Guizhou Xinlian Blasting Engineering Group Co. | Shi C.,Hohai University
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

A new algorithm, which can randomly generate Karst cave geometry, was developed in this work. Each Karst cave geometry was regarded as a polyhedron. All the suppositional polyhedra, which represent the Karst caves, are cast into the research domain according to the random distribution rule of the Karst caves. Then, the solid polyhedra are transformed into void to model the Karst caves. Thus, the resultant domain is the rock mass that contains Karst caves. Two supernumerary algorithms, the merging neighboring points algorithm and the threshold value interception algorithm, were also employed to obtain caves with random shape and distribution according to the real caves’ shapes, area ratios, radius ranges, distributions and smoothness. The method proposed in this work provides a way to numerically simulate Karst caves. © 2016 Taylor & Francis Group, London.


Zhao M.S.,Guizhou Xinlian Blasting Engineering Group Co. | Chi E.A.,Guizhou Xinlian Blasting Engineering Group Co. | Chi E.A.,Guizhou University | Kang Q.,Guizhou Xinlian Blasting Engineering Group Co. | And 2 more authors.
Applied Mechanics and Materials | Year: 2014

In blasting excavation of shallow tunnel, the surface vibration of excavated tunnel can be amplified due to effect of hollow. This effect is an important factor for safety of surface buildings. Based on the measured data of one tunnel excavation project, combining wavelet analysis and AOK time-frequency distribution method, the surface vibration signals in front and rear position of working face are processed into different frequency bands. Taking PPV, dominant frequency, d7 (7.8125-15.625 Hz) band energy ratio and d7 (7.8125-15.625 Hz) band energy duration as indexes, the effect of hollow on time-frequency characteristics of surface vibration signal is studied in this article. The results show that, affected by the hollow in excavated region, the PPV and dominant frequency increase, and the d7 (7.8125-15.625 Hz) band energy shows fluctuant ratio of total energy and an increase of band energy duration. The results show that the hollow influence on the frequency characteristics of the surface vibration signals comprehensively, and also provide an analytical basis for anti-vibration and vibration reduction study from the angle of energy. © (2014) Trans Tech Publications, Switzerland.


Tao T.-J.,Guizhou Xinlian Blasting Engineering Group Co. | Tao T.-J.,Jiangxi University of Science and Technology | Liu L.-S.,Jiangxi University of Science and Technology | Chi E.-A.,Guizhou Xinlian Blasting Engineering Group Co. | Zhao M.-S.,Guizhou Xinlian Blasting Engineering Group Co.
Electronic Journal of Geotechnical Engineering | Year: 2016

Cut height is a major factor influencing ground vibration and collapse area due to blasting collapse of cooling tower.In this article,the effect of cut height on ground vibration and collapse area is simulated and analyzed by ANSYS /LS-DYNA dynamic finite element software.Meanwhile, the simulated collapse processes of the cooling tower with different cut height were completed in a parallel study, the results of which are briefly introduced in this paper. The results show that: as the cut height increases, ground vibration on surrounding structures and collapse area of cooling tower decreases.When the cut height was 8 m, the collapse area of cooling tower was 82m×71m and the ground vibration at the distance of 54m was 0.098 cm/s. At last, numerical simulation results were used in blasting project, which reduced hazard of collapse vibration and verify the scientific of this method. © 2016 ejge.


Luo Y.J.,9855 Branch of Guizhou Jiulian Industrial Explosive Materials Development Co. | Tao T.J.,Guizhou Xinlian Blasting Engineering Group Co. | Chi E.A.,Guizhou Xinlian Blasting Engineering Group Co.
Advanced Materials Research | Year: 2014

Emulsion explosive is one of common industrial explosives, its performance ability is important for producer. So the experiment and theory analysis were made to improve the performance ability of emulsion explosive in this paper. The results show that: performance ability of explosive becomes bigger when oxygen balance of explosive is zero or slightly negative; Water content also has a significant impact on stability, density and explosive performance of emulsion explosive; performance ability of emulsion explosive is generally rises with density increasing. The key approaches of improving the performance ability are that improving the explosion heat and hematocrit and selecting appropriate moisture content and density, and advanced process technology also should be put to use. © (2014) Trans Tech Publications, Switzerland.


Tao T.J.,Guizhou Xinlian Blasting Engineering Group Co. | Zhao M.S.,Guizhou Xinlian Blasting Engineering Group Co. | Kang Q.,Guizhou Xinlian Blasting Engineering Group Co.
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

Displacement and stress of silo wall influenced by batch piling are studied based on the finite model of the reinforced concrete shallow coal bunker. The results show that asymmetric loading produces larger deformation of the wall compared with symmetric loading. This is because in symmetric loading, the maximum displacement occurs at the top of the wall, the free end, and the maximum stress occurs at the foot of the wall, consistent with a cantilevered arrangement. These distribution patterns are relatively consistent with the mechanical property of the wall. The stress curve exhibits a sharp negative gradient as the stress decreases and then steadily increases to a crest at 10 m, after which it decreases through to the top of the wall. © 2016 Taylor & Francis Group, London.


Zhao M.S.,Guizhou Xinlian Blasting Engineering Group Co. | Kang Q.,Guizhou Xinlian Blasting Engineering Group Co. | Tao T.J.,Guizhou Xinlian Blasting Engineering Group Co.
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

The effects of hole-bottom layer air ratio on blasting vibration intensity, blasting vibration frequency as well as vibration lasting time were studied, and the effects of hole-bottom layer air ratio on the band advantage of blasting seismic wave frequency duration and frequency band energy ratio were studied based on the energy theory. And according to the real problems of earth excavation blasting of Zunyi City, Pu District II East Road on the 5th practical still room area, the test of bottom hole air interval charge was done. The test results showed that: the hole-bottom air space charge is an effective means to reduce the blasting vibration, and the optimum air layer ratio in test conditions in fractured rock is recommended as 15%. © 2016 Taylor & Francis Group, London.


Luo Y.J.,9855 Branch of Guizhou Jiulian Industrial Explosive Materials Development Co. | Zhao M.S.,Guizhou Xinlian Blasting Engineering Group Co. | Chi E.A.,Guizhou Xinlian Blasting Engineering Group Co. | Tao T.J.,Guizhou Xinlian Blasting Engineering Group Co.
Advanced Materials Research | Year: 2014

In order to resolve the problems that many units are intersect and mutual restraint in the safety evaluation of emulsion explosive continuous manufacturing, the safety evaluation model based on uncertainty measurement theory was built, then this model was used to evaluate the safety of emulsion explosive continuous manufacturing in one explosive industry. The evaluation results show that: the information entropy and confidence identifying criterion were respectively used to ascertain the evaluation index weight and identifying criterion, by these ways, the evaluation results of this model are more objective; and the evaluation units can be selected flexibly according to actual situation, the calculation of evaluation model is simple, so the evaluation results can offer decision basis for explosive industry to make good management. © (2014) Trans Tech Publications, Switzerland.


Tao T.J.,Guizhou Xinlian Blasting Engineering Group Co. | Zhao M.S.,Guizhou Xinlian Blasting Engineering Group Co. | Kang Q.,Guizhou Xinlian Blasting Engineering Group Co.
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

In order to resolve the uncertainty problem of influence factors of bench blasting effect pre-evaluation, the pre-evaluation model of the bench blasting effect based on the uncertainty measurement theory was built. Then, this model was used to pre-evaluate the bench blasting effect in Hongshuitai flat engineering. The pre-evaluation results show that the information entropy and confidence identifying criterion were, respectively, used to ascertain the pre-evaluation index weight and identifying criterion. In this way, the pre-evaluation results of this model are found to be more objective, and the pre-evaluation index can be selected flexibly according to the actual situation. The calculation of the evaluation model is found to be simple, so the evaluation results can offer a decision basis for blasting workers to make timely adjustment of the blasting scheme. © 2016 Taylor & Francis Group, London.


Tao T.J.,Guizhou Xinlian Blasting Engineering Group Co. | Xie C.M.,Guizhou Xinlian Blasting Engineering Group Co. | Chi E.A.,Guizhou Xinlian Blasting Engineering Group Co. | Zhao M.S.,Guizhou Xinlian Blasting Engineering Group Co.
Applied Mechanics and Materials | Year: 2014

Based on the finite element model of the tunnel, dynamic response of tunnel is studied influenced by different confining pressure and different surrounding rock types under of blasting vibration under blast vibration load. The results show that when the confining pressure increases, the maximum horizontal and vertical vibration velocity, stress and displacement increase, and the horizontal vibration amplitudes are less than the vertical vibration amplitudes. With the decreasing of the rock type, the vertical vibration velocity peak value increases, and vertical direction vibration velocity is more sensitive for the rock stress state. With the increase of depth of surrounding rock, the confining pressure increases, and the vertical velocity response signal of surrounding rock increases, and the response signal is more sensitive to the change of stress of surrounding rock compared with the horizontal vibration velocity peak. © (2014) Trans Tech Publications, Switzerland.

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