Holes

This article introduces Fenhe reservoir rock plug blasting practice, which was carried out in the thick layer of silt underwater and chamber blasting plus drilling method was adopted.

介绍了汾河水库泄洪隧洞进水口岩塞爆破的方案 ,该隧洞既在水下又在较厚淤泥下 ,因此采用了洞室加钻孔爆破方案。

Aim at the problem that the broken hole usually appears in demoulding, the process and key technology of demoulding based on Pro/E are described.

以Pro/E为平台 ,针对模具拆模过程中经常出现破孔的问题 ,论述了注射模具拆模的基本原理、流程、分模面的设计 ,以及分模面设计中填补破孔的三种主要方法 ,包括定义“环闭合”、定义“填充环”和构建曲面片 ,并介绍了各种方法的优缺

Package yarn, when bleached by the special oxidative bleaching agent 197, can reduce looming holes, losses, and color difference between layers after dyeing.

用氧漂特效助剂197练漂后的筒子纱,染色后可减少上机破洞、层差和损耗,对实践生产具有指导意义。

The technique of decreasing Vibration of deep and Wide road cut of two side by chamber blasting;

深宽双壁路堑洞室爆破开挖减震技术

The technique of slope protection of deep and wide road cut of two side by chamber blasting;

深宽双壁路堑洞室爆破开挖边坡保护技术

The paper gives out main technical measures to keep side-slope in stableness by chamber blasting,which can also make high side-slope stable only when useful geological information and reasonable plan are well known,and charge's broken scope is precisely defined and single charge is independently exploded.

论证了采用洞室爆破保持边坡稳定的主要技术措施。

Research on Mechanics of Charging Structure of Bottom Gas-Space in Deep-hole Blasting Engineering;

中深孔爆破孔底空腔装药机理的研究

On the Application of Outer-hole Blast in Medium Length Hole

孔外延期爆破在中深孔爆破中的应用

long hole raising

深孔爆破法天井掘进

Explosive Excavation Technique in Manual Excavation Piles;

爆破成孔技术在人工挖孔桩中的应用

Application of the Blasting Technique about Medium Depth Bore and Post Hole Joint Control

中深孔与浅孔联合控制爆破技术的应用

The kibble hole arrangement optimization of tunnel digging blasting of Daanshan mine

大安山矿巷道掘进爆破掏槽孔布孔优化

The Application of Deep Pore Loosening Control Blasting in Bridge Bored Pile Construction

深孔松动控制爆破在桥梁钻孔桩施工中的应用

CONSTRUCTION SCHEDULE ADVANCEMENT OF DRILLING PILE BY DEEP HOLE WATER PRESSURE BLASTING

采取深孔水压爆破提高钻孔桩施工进度

The features parameters selection and ignition plan of rat hole blasting are studied.

研究了斜孔爆破的特点、孔爆破参数的选择及起爆方案。

The Analysis and Defense Measure of Thin Punch Destruction

冲小孔凸模破坏形式分析及预防措施

Middle-Deep Bore Blasting Experimental Study on Hard Rock Tunnel Heading

硬岩巷道掘进的中深孔爆破试验研究

Rock Splitting Mechanism Numerical Simulating Analysis of the Rock Drill-splitter;

钻孔劈裂器破岩机理的数值模拟研究

Study on Fragmentation Forecasting for Length Hole Bench Blasting;

中深孔台阶爆破块度分布预测的研究

Middle and Deep Hole Controlled Blasting of Rock Cut in the Complicated Surroundings;

复杂环境下路堑土岩中深孔控制爆破

Research of the Attenuation Rule of the Water Shock Wave Effect for Underwater Drilling Blasting

水下钻孔爆破水击波衰减规律的研究

Main Factor of Affecting the Underground Medium- length Hole Dynamiting Effect

影响地下中深孔爆破效果的主要因素

Deep Hole Blasting in Hard Rock of No.1 Auxiliary Shaft of Lilou Steel Coal

李楼铁矿1#副井硬岩深孔爆破技术

Study of Method of Conducting Smooth Blasting in Weak and Soft Surrounding Rocks

软弱围岩中光面爆破掏槽孔方案研究