浅埋隧道明洞控制爆破施工

结合连云港东疏港高速公路炮台顶隧道爆破工程实践,介绍了控制爆破各技术参数的选取和施工工艺的控制．采用文中提出的方法,取得了良好的工程效果。     

螺旋孔和圆孔切槽爆破的对比分析

笔者在文中从螺旋孔和圆孔爆破的爆破机理、数值模拟等方面对二者进行了对比分析,结果表明,螺旋孔爆破能有效地提高破岩面积,增加能量利用率.     

正阳隧道光面爆破施工技术

渝怀线正阳隧道地质复杂 ,溶洞、溶槽、节理裂隙发育 ,涌水量大 ,设计铺设防水板 ,光爆效果的好坏将直接影响防水板的挂设与衬砌混凝土的质量。本文对该隧道的光面爆破施工技术作了简单介绍 ,总结了几点体会。     

大断面硬岩隧道快速掘进施工经验总结

研究目的:以温福铁路客运专线鸡面山隧道工程为例,通过自制钻孔台车运用,光面爆破设计、装碴方式及运输设备配置、通风方式选择,达到大断面硬岩的快速掘进,并分析其中不足。研究结果:利用生产要素的合理配备和施工(组织)方案的比选,实现了大断面硬岩的快速掘进。     

Food supply mechanisms for cold-water corals along a continental shelf edge

In recent years it has been documented that deep-water coral reefs of the species Lophelia pertusa are a major benthic habitat in Norwegian waters. However, basic information about the biology and ecology of this species is still unknown. Lophelia live and thrive under special environmental conditions of which factors such as temperature, water depth, water movement and food supply are important. The present work explores the hypothesis that Lophelia forms reefs in places where the encounter rate of food particles is sufficiently high and stable over long periods of time for continuous growth. This is done by relating the distribution of reefs with the results of numerical ocean modelling.Numerical simulations have been performed with an idealized bottom topography similar to what is found outside parts of the Norwegian coast. In the simulations the model is first forced with an along slope jet and then with an idealized atmospheric low pressure. The model results show that the encounter rates between the particles and the water layer near the seabed are particularly high close to the shelf break. This may indicate that many Lophelia reefs are located along the shelf edges because the supply of food is particularly good in these areas.A sensitivity study of the particle supply in the area close to the seabed for increasing latitude has also been done. This shows that the Ekman transport in the benthic layer tends to create a steady supply of food for benthic organisms near the shelf edge away from the equator.     

深水基床爆夯施工控制

结合华南某防波堤工程的深水抛石基床爆夯工程实践,就爆夯施工过程中对基床密实、相邻区域影响及安全控制进行统计和分析,并就如何有效控制各种影响、趋利避害进行探讨。     

50万V高压线下山体控制爆破

通过对50万V高压线下山体控制爆破成功经验,阐述在安全要求极高的环境下的爆破方案、爆破参数、防护措施与爆破效果。     

高挡墙结构的爆破地震波响应仿真分析

通过大量爆破地震波数据的采集、研究和分析,建立了相应的爆破地震模拟震荡信号模型;作为模拟爆破地表震波的信号源,对于高挡墙建筑物进行了爆破地震波激励的动态响应的系列分析;采用瞬态动力学分析技术,确定了结构的动力响应,得到结构物的控制极限震速,为爆破地震监控提供了必要的技术参数。     

运营隧道排水侧沟控制爆破开挖技术

本文介绍了某运营隧道排水侧沟降落改造爆破开挖技术，探讨了在复杂环境条件下如何决速高效地确保爆破开挖成功，为今后的类似施工提供参考。