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·Ma ZH Geng JJ 2020 Research on the effect of different guiding grooves on the weakening of the coal seam roof by static crushing agents Coal Science and Technology 48 S1 46 50 Google Scholar Ren JW 2015 Study on the Mechanism of Expansion Cracking and Permeability Enhancement in Outburst Coal Seam and Gas Enhanced Drainage China
QUASI STATIC CRUSHING OF DIFFERENT CONFIGURATIONS OF METAL COMPOSITES HYBRID TUBES UNDER AXIAL/LATERAL LOADING Dongdong Chen1 Guohua Zhu2 Xintao Huo3 Xinglong Liu4 Guangyong Sun5
·The study reached the following main conclusions 1 microwave heating is better than conventional heating in terms of heating rate peak temperature and peak pressure; 2 using static crushing
DOI / Corpus ID 238663302; A computational model for thick concrete slab demolition using soundless chemical demolition agent article{Jiang2021ACM title={A computational model for thick concrete slab demolition using soundless chemical demolition agent} author={Zhisheng Jiang and Wenzhong Zheng and
·The long reaction time and uncontrollable reaction process of the swelling agent in the process of rock breaking by static crushing agent lead to unsatisfactory efficiency and effect of rock Expand 1 PDF Save Influence of admixtures on the performance of soundless chemical demolition agents and implications for their utilization
·In summary the measure of reducing the content of static crushing agent by incorporating materials can reduce the cost of materials by 30% to 50% and combined with the new technology of auxiliary heating and sealing successfully solved the
Key words small cross section; non blasting; rhinestone; static crushing agent 1 、[1]
·Static crushing technology is a method that the mixed static crushing agent is filled in the hole of rock or concrete and the pressure generated by the static crushing agent is utilized to make the rock or concrete loose and crisp quietly
Directional rupture is one of the difficult problems in deep rock mechanics and engineering A directional fracturing method with static expansive agent controlled by dense linear multi boreholes is proposed A physical experiment is designed and performed to investigate the basic laws of this method The fracture initiation and propagation process and the mechanism of
·A static cracking agent also known as a chemical expansive agent is a nonexplosive noncombustible and nontoxic powdered chemical mixture with high expansion performance Considering the relatively low reaction speed and environmentally friendly characteristics of static crushing agents combined with deep adjoining rock control static
·SCA expansion agent s breaking time to ordinary concrete is three to five hours Blending ordinary Portland cement can adju st the breaking time for a delay of 24 hours which provides a multiple choice for all kinds of concrete static crushing construction
·Static crushing agent SCA offers advantages such as good safety no harmful gases and minimal vibration making SCA ideal for rock crushing in mines or underground engineering To
·Variation of AE characteristics with time for static crushing of specimens with different notch angles a The ring down counts and Experiment of crack propagation in test specimen under expansive action of static cracking agent Engineering Blasting 16 3 7 11 Google Scholar Tang Y 2012 Application and research of the soundless
Static crushing occurs preferentially at the minimum distance between the hole edge and the free surface The crushing effect can be improved with increasing hole diameter hole depth static crushing agent and expansion pressure while too much static
·The expansion process of the static cracking agent is illustrated in Fig 2 the water ratio is 32% the initial water temperature is °C and the temperature after mixing is °C the expansion process of the static cracking is separated into four first stage illustrated in Fig 2 a is the mixture s hardening stage during which the fluidity steadily
Appl Sci 2023 13 11310 4 of 30 Figure 1 Diagram illustrating the static crushing agent hydration reaction s expansion mechanism It is important to note that the expansion pressure formed
·A 3 dimensional DEM model has been created to simulate static and dynamic rod penetration into calibration chambers filled with a scaled analogue of Fontainebleau sand Crushing effects on penetration results has been examined Particle crushing causes a reduction of penetration resistance for both static and dynamic tests
·The static crushing technology fills the static crushing agent slurry into the drilling hole of the broken material and the volume expansion occurs through the hydration reaction and the
·AMA Style Yuan R Lian Z Zhang Q Li M Li H Li Y Wu W Rock Fracturing Characteristics and Roadway Expansion Application of Static Crushing Agent under Multi Row Drilling Condition
·Abstract In order to investigate the impact of concrete strength and whether the stirrups are cut off on the static crushing effect of columns eight concrete columns with different strength grades were drilled at the top of the columns along the column height and injected with static crushing agent slurry and the stirrups were cut off at the side of the holes for four
·In accordance with the actual geological situation of Yangquan No 3 Mine the basic parameters of manpower manipulated caving breaking with static crushing are settled which reaps bumper
LIU Yufa HUANG Hui DU Guanggang QI Wenchao RAN Qiushuo LIANG Xiao LIU Lei．Analysis of external influence factors and hydration reaction of static crushing agent[J] Conservation and Utilization of Mineral Resources 2024 44（4）：41−47
DOI / Corpus ID 204250273; Design of hole pattern in static rock fracture process due to expansion pressure article{Arshadnejad2019DesignOH title={Design of hole pattern in static rock fracture process due to expansion pressure} author={Sh
