pre-splitting crack

The effect of pre-splitting crack parameters on damping vibration is analyzed quantificationally by numerical simulation,the influence rules of pre-splitting crack parameters on propagation of blasting seismic wave are found.

利用数值模拟对预裂缝的减振效果进行了量化分析,掌握了预裂缝参数对地震波传播的影响规律,结果显示,在一定范围内(即在r≤r0,r0为定值),减振效果随着预裂缝缝宽的增加而增加,当缝宽r≥r0时,缝宽对预裂缝减振效果的影响减弱。

The results show that the effect of vibration isolation and damping increases with pre-splitting crack width in a certain value.

通过对地震波通过不同宽度预裂缝传播规律的数值模拟分析,和对预裂缝的减振效果进行了量化分析,了解预裂缝宽度对减振效果的影响规律,掌握了在一定范围内(即在r≤r0,r0为定值),减振效果随着预裂缝缝宽的增加而增加,当缝宽r≥r0时,缝宽对预裂缝减振效果的影响减弱。

The vibration-isolating effect of pre-split crack and vibration-isolating slot is determined on the basis of on site blasting expriment and vibration monitoring data, it is valuable for the choice of the blasting excavation method.

通过现场爆破试验及震动监测,确定了预裂缝和减震槽的减震效果,为爆破开挖方案的选取提供了依据。

Structural fracture prediction and aperture analysis for low permeability sandstone reservoir;

低渗透砂岩储层构造裂缝预测及开启性分析

Multi-scale edge detection of wavelet and application in fracture prediction.;

小波多尺度边缘检测及其在裂缝预测中的应用

Research on main curvature method for fracture prediction in Jialingjiang formation of Maliuchang;

主曲率法在麻柳场嘉陵江组裂缝预测中的应用研究

Initiation and extension of existing cracks under detonation gas loading in a high energy combined perforation;

高能复合射孔爆生气体作用下预存裂缝起裂扩展研究

Based on a study and analysis of the effect of linear shaped charge, the paper sets forth the new method and the mechanism on presplitting cutting slots by linear shaped charge, pointing out the potential prospects of its development.

文中根据对线型聚能装药效应的分析研究 ,提出了新的聚能装药预裂切缝方法及其机理 ,并指出了其发展前景。

Application of Pre-Cracking in Semi-Rigid Base to Mitigate Reflective Cracking

采用半刚性基层预裂缝技术减少反射裂缝

Numerical Prediction of Crack Propagation and Crack Widths in Concrete Structures

混凝土结构裂缝扩展和裂缝宽度的数值预测

Research on the parameter optimization of the preset crack's fracturing slot and ground test

预置裂缝压裂割缝参数优选及地面试验研究

A New Productive Prediction Method of Horizontal Fracture Wells in Hydraulic Fracturing

水力压裂水平裂缝井产能预测新方法

Analysis of cracks in certain T-beam of precast prestressed concrete

某预制预应力混凝土T型梁裂缝分析

Cracks in Precast Slab Floor along the Seams: Causes of Their Occurrence and Measures to Prevent and Treat Them;

预制板楼面沿板缝产生裂缝的原因及防治措施

Prediction of Plane Slotted-Array Antenna Electrical Performance Affected by Manufacturing Precision

裂缝天线缝制造精度对电性能影响的预测

A crack, crevice, or split.

裂缝裂隙、缺口或裂缝

Analysis of Bearing Load Capacity and Crack for Prestressed Concrte Box Girder Bridge;

预应力混凝土箱梁承载力与裂缝研究

The Prediction of Fractured Gas Reservoirs of Tight Clastic Rock;

致密碎屑岩气藏裂缝性储层预测方法

Experimental Study on Cracks of Prestressed Steel Reinforced Concrete Members;

预应力钢骨混凝土构件裂缝试验研究

Research on Repairing Concrete s Crack Through Embedded Pipe;

预埋管灌浆修补混凝土裂缝试验研究

Postmodernist Traits and Predictive Components in The Cleft;

《裂缝》中的后现代特征和预言成分

The Formative Causes and Control Measures on Cracks in Cast-in-place Concrete Beams and Slabs;

现浇混凝土梁、板裂缝的成因和预防

Formation,Prevention and Treatment of Concrete Cracks;

浅析混凝土裂缝的成因、预防与处理

Analysis of the Cause and Prevention of Crack on the Surface of the Concrete Road;

水泥混凝土路面裂缝成因分析与预防

Common Crevices Analyse and Prevention When We Cast Reinforced Concrete floow;

常见钢筋砼现浇楼板裂缝分析与预防

On the Reasons and Solutions of Crocking and Leakage of Floors;

浅谈楼板灌缝开裂的原因和预防措施