Influence of Physical Sensitizing Agent on Compression Resistance of Deep Water of Emulsion Explosives

2013 ◽  
Vol 295-298 ◽  
pp. 2869-2873 ◽  
Author(s):  
Lei Liu ◽  
Yi Yang ◽  
Cheng Liang Zhang ◽  
Guo Hua Wang
Keyword(s):  
Deep Water ◽  
Pressure Effect ◽  
Water Pressure ◽  
Glass Microspheres ◽  
Good Resistance ◽  
Emulsion Explosive ◽  
Emulsion Explosives ◽  
Explosive Performance ◽  
Compression Resistance ◽  
Emulsion Matrix

A study of emulsion explosive of deep-water pressure performance can provide theoretical basis for underwater blasting, deep hole blasting and the design of emulsion explosive. The sensitizer is the heavier components of emulsion explosive, using reusable experimental device to simulate the environment of deep water charge, perlite and glass microspheres in two kinds of commonly used physical sensitizing agent content on properties of emulsion explosives with deep water pressure effect. The experimental results show that : with the increasing of the content of physical sensitizing agent, emulsion explosive of deep-water pressure performance also gradually improve, when the pressure is larger, the effect is particularly pronounced; in a certain range, with the increase of the content of physical sensitizing agent, emulsified explosive performance also gradually improve, but reaches a certain value, the explosion properties but declined; in emulsion matrix under the same conditions, the perlite content of 5%, glass microspheres content is 2%, the emulsion explosive has good resistance to water pressure and explosion properties.

Influence of Compound Sensitizers on Compression Resistance of Deep Water of Emulsion Explosives

2014 ◽  
Vol 535 ◽  
pp. 738-743
Author(s):  
Lei Liu ◽  
Shen Zhang Liu ◽  
Hong Quan Zhao
Keyword(s):  
Sodium Nitrite ◽  
Deep Water ◽  
Hot Spots ◽  
Water Pressure ◽  
Glass Microspheres ◽  
Emulsion Explosive ◽  
Emulsion Explosives ◽  
Explosive Performance ◽  
Environment Study ◽  
Pressure Resistance

compound sensitizing agent is an important component of the emulsion explosive, by using reusable experiment device to simulate the deep charging environment, study compound sensitizing agent on the properties of emulsion explosive deep water pressure resistance. Experimental results show that the mixed sensitizing, the deep water pressure resistance of three kinds of emulsion explosive performance award to him a bad order: glass microspheres + perlite + sodium nitrite sensitization, glass microspheres + perlite and sensitizing sodium nitrite sensitization. Compound containing glass microspheres sensitizer, the measurement of explosive performance closer to sensitization performance when only glass microspheres, perlite, the addition of sodium nitrite on the explosive performance contribution is small. Sodium nitrite and perlite mixed sensitizing, explosive detonation "hot spots", first class formation is chemical sensitization is given priority to, only a minority of perlite as "hot spots", the measurement of explosive performance closer to use sodium nitrite sensitization performance.

Experimental Study on the Influence of other Factors on Compression Resistance Performance of Emulsion Explosives in Deep Water

2014 ◽  
Vol 535 ◽  
pp. 729-733
Author(s):  
Lei Liu ◽  
Qiang Liu ◽  
Li Cheng
Keyword(s):  
Experimental Study ◽  
Water Content ◽  
Deep Water ◽  
Experimental Results ◽  
Paraffin Wax ◽  
Emulsion Explosive ◽  
Emulsion Explosives ◽  
Small Influence ◽  
Resistance Performance ◽  
Compression Resistance

Since oil phase materials, oxidizer, and water are important components of emulsion explosive, their influences on compression resistance performance of emulsion explosives in deep water was studied by using reusable experiment device to simulate the deep charging environment. The experimental results show that with the equivalent content of the oil phase material, the sequence of three oil phase types of emulsion explosives from good to bad in terms of compression resistance performance and explosion performance in deep water are composite wax, composite wax and machine oil, paraffin wax, vaseline and machine oil. With the equivalent content of oxidant, the type of oxidant species has quite small influence on compression resistance performance and explosion property. Within a certain range, water content has small influence on compression resistance performance, and explosion performance increases with the increasement of water content, while it significantly decreases with water content increasing to a certain amount.

Influence of Emulsifier on Compression Resistance of Deep Water of Emulsion Explosives

2013 ◽  
Vol 295-298 ◽  
pp. 2971-2975 ◽  
Author(s):  
Lei Liu ◽  
Qiang Liu ◽  
Wen Xin Li ◽  
Hai Yang Su
Keyword(s):  
Significant Contribution ◽  
Emulsion Explosive ◽  
Emulsion Explosives ◽  
Initial Stage ◽  
Explosive Performance ◽  
Oil In Water ◽  
Experimental Apparatus ◽  
Span 80 ◽  
The Impact ◽  
Compression Resistance

The oil-in-water emulsifier is a key component of the emulsion explosive, experimental apparatus to simulate the environment of deepwater charge reusable research T155; the Span-80 are two commonly used emulsifier content of the emulsion explosive anti-Sham pressure performance the impact. Experimental results show that: T155, Span-80 emulsified explosive sample at the initial stage as the emulsifier content improved explosive performance and anti sham pressure performance has significantly improved, when the content is increased to a certain value against Sham pressure performance improvement is no longer a significant contribution small explosive performance; T155 content of 2% and 3% in Span-80, the emulsion explosives at this time there are a better anti-deepwater pressure performance and explosive performance.

Stability Test of Emulsion Matrix in the Emulsifier

2014 ◽  
Vol 1082 ◽  
pp. 26-29
Author(s):  
Hui Sheng Zhou ◽  
Xing Hua Xie ◽  
Kang Xu
Keyword(s):  
Room Temperature ◽  
Storage Stability ◽  
Emulsion Explosive ◽  
Emulsion Explosives ◽  
Aqueous Emulsion ◽  
X Ray ◽  
Use Of Technology ◽  
The Stability ◽  
Emulsion Matrix ◽  
Stability Of Emulsion

Aqueous emulsion explosives are oxidants andcarbonaceous fuel through theemulsifier, the use of technology toprepare emulsion obtained byemulsifying system in the thermodynamic sense isan unstable system. Therefore,the stability of emulsion explosives is a fundamentalproblem. Stability refers to the so-called emulsion explosives and their ability tomaintain the physical state of constantchange significantly explosiveperformance does not occur that emulsionexplosives stratification occursduring storage at room temperature,variations, breaking and loss experienced by the time of detonation capability. Storage stability is a measure of good or bad quality ofemulsion explosives is an important pointer, which determines the size of an emulsion explosive production,application conditions and ranges.By X-ray diffractionand microstructure analysis, intuitive judgment pastestability of emulsion explosives,which provides a potential industrial testmethod for solving emulsionexplosive powder and colloidalcrystallization caking hardening problems.

Thermal Decomposition Conditions of Emulsion Matrix in the Emulsifier

2014 ◽  
Vol 1082 ◽  
pp. 387-390
Author(s):  
Hui Sheng Zhou ◽  
Xing Hua Xie ◽  
Kang Xu
Keyword(s):  
Thermal Decomposition ◽  
Ammonium Nitrate ◽  
Hot Spots ◽  
Hot Spot ◽  
Decomposition Mechanism ◽  
Heat Accumulation ◽  
Emulsion Explosives ◽  
Starting Point ◽  
Emulsion Matrix

The main background was the "3.11" accident in this paper. The starting point was based on the experts’ conclusions of investigation and analysis in the accident. Combining the decomposition mechanism of ammonium nitrate in the emulsion explosives and the lessons from the production of emulsion explosives explosion, the conditions of the emulsion explosives (matrix) thermal decomposition in the emulsifier are given that are the formation of hot spot and the accumulation of heat. Then the factors of hot spots generated in the production of emulsion explosives and the occurred conditions of the heat accumulation are analyzed and summarized.

Design and Experimental Research on Deep Water Pressure Resistance System of Argo Float

2019 ◽  
Vol 83 (sp1) ◽  
pp. 116
Author(s):  
Hanling Wu ◽  
Yanjun Liu ◽  
Gang Xue ◽  
Fengxiang Guo ◽  
Zhitong Li ◽  
...  
Keyword(s):  
Experimental Research ◽  
Deep Water ◽  
Water Pressure ◽  
Argo Float ◽  
Resistance System ◽  
Pressure Resistance

Enlightment of “May 20” Explosion Accident

2014 ◽  
Vol 1082 ◽  
pp. 391-394 ◽  
Author(s):  
Xing Hua Xie ◽  
Lei Wang ◽  
Hui Sheng Zhou
Keyword(s):  
Thermal Decomposition ◽  
Production Process ◽  
Ammonium Nitrate ◽  
Hot Spots ◽  
Hot Spot ◽  
Decomposition Mechanism ◽  
Heat Accumulation ◽  
Emulsion Explosive ◽  
Emulsion Explosives

This paper introduces the "5.20" of the emulsion explosive incident and analysis the cause of the accident. Based on the production of explosion accident summarizes the security problems of emulsion explosive production process, and relevant measures are put forward. Combining the decomposition mechanism of ammonium nitrate in the emulsion explosives and the lessons from the production of emulsion explosives explosion, the conditions of the emulsion explosives (matrix) thermal decomposition in the emulsifier are given that are the formation of hot spot and the accumulation of heat. Then the factors of hot spots generated in the production of emulsion explosives and the occurred conditions of the heat accumulation are analyzed and summarized.

The Research of Pore Water Pressure Effect on the Slope Safety Factor Based on Flac

2012 ◽  
Vol 166-169 ◽  
pp. 1433-1436 ◽  
Author(s):  
Hai Bo Liu ◽  
Li Hua Zhang ◽  
Da Hao Lin
Keyword(s):  
Pore Water ◽  
Safety Factor ◽  
Pressure Effect ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Slope Safety

On the basis of the Australian Computer Society(ACADS)`s typical questions1(a),first, regardless of the slope in the case of pore water pressure, used FLAC procedure calculate the safety factor, the result was very close to the reference answer given by ACADS, we can see the accuracy of FLAC. Then, applied to the slope of different pore water pressure, obtained safety factor under corresponding conditions, then, we found that the pore water pressure had effect on the slope safety factor, but the influence are not same, when the pore water pressure less than a certain value, the influence are very small, but, when the pore water pressure exceeded this value, the influence became very large.

scholarly journals Application of the emulsion explosives in the tunnels construction

2019 ◽  
Vol 123 ◽  
pp. 01039 ◽  
Author(s):  
Oleh Khomenko ◽  
Maksym Kononenko ◽  
Inna Myronova ◽  
Mykola Savchenko
Keyword(s):  
Blast Hole ◽  
Hazard Index ◽  
Emulsion Explosive ◽  
Technical Standards ◽  
Emulsion Explosives ◽  
Atmospheric Air ◽  
Technical Parameters ◽  
Safety Requirements ◽  
Scientific Technical

The analysis has been made of the technical parameters of the existing passport for drilling and blasting operations (DBO) in terms of compliance with labour safety requirements and scientific-technical standards. The methodology for constructing the DBO passport has been developed, which takes into account the areas of blast-hole groups and the properties of emulsion explosives. The type of the cut has been analysed, modelled and accepted for use, which corresponds to the conditions of tunnelling as much as possible. The zones of deformation and fracturing in the massif around blast-hole charges have been simulated. The level of decrease in the hazard index for atmospheric air has been set when using the emulsion explosive Ukrainit-PP instead of TNT-containing charge – Ammonite No.6 ZhV.

Hydrodynamic Pressure Effect Analysis of Double-Column Pier in Deep Water under Earthquake Actions

2011 ◽  
Vol 255-260 ◽  
pp. 3697-3701
Author(s):  
Fu Rong Li ◽  
Zhi Hua Wang
Keyword(s):  
Deep Water ◽  
Pressure Effect ◽  
Pressure Coefficient ◽  
Hydrodynamic Pressure ◽  
Relative Displacement ◽  
Internal Force ◽  
Effect Analysis ◽  
Force Moment ◽  
Added Water ◽  
Pressure Changes

Taking the double-column pier as the research project, based on ABAQUS finite software, using the added water mass to consider the hydrodynamic pressure effect, considering the nonlinear of the soil and the concrete, building the hydrodynamic pressure effect model analysis of double-column bridge pier in deep water under earthquake actions, analyzing the hydrodynamic pressure effect on the relative displacement, acceleration, shear force, moment responses of pier and its hydrodynamic pressure coefficient under the earthquake. The results show that the earthquake hydrodynamic pressure changes the seismic responses characters of the pier, and increases the relative displacement and acceleration of pier top, and also increases the internal force of pier bottom. It is necessary to consider the hydrodynamic pressure effect in the bridge seismic design for comply with the actual situation better.

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