共查询到19条相似文献，搜索用时 93 毫秒
1.
徐建宇 《淮南职业技术学院学报》2009,9(2):88-90
中深孔爆破是小型矿山广泛应用的一种采矿方法,为了优化小型矿山中深孔爆破工艺,介绍了一种利用中小型设备,在狭窄的山坡上进行中深孔爆破,日产量维持在3万m3的爆破采石工艺设计;着重强调了与影响爆破质量的几个密切因素,在现场爆破试验的基础上优化各种爆破施工技术参数,从而收到明显的爆破效果,对同类的其他工程有一定的参考价值。 相似文献
2.
罗俊 《长江工程职业技术学院学报》2012,29(2):10-12
桐庐县16省道与320国道连接线工程的高边坡路堑采用了深孔控制爆破施工技术,取得良好的工程效果。本文结合工程实践,介绍了控制爆破各技术参数的选取和施工工艺的控制。 相似文献
3.
竖井施工钻眼爆破新技术研究和应用 总被引：2，自引：0，他引：2
张馨 《石家庄铁路职业技术学院学报》2008,7(Z1)
根据深竖井井筒工程的特点,概述钻爆研究中关于周边辅助眼工艺、光面光底锅底形爆破、硬岩低抛掷减冲深孔爆破、软岩立体微差深孔爆破等新技术,介绍在大量深竖井井筒工程推广应用中创造的7项全国纪录和8项企业纪录,取得显著的经济效益和社会效益. 相似文献
4.
对广东某高速公路路基工程的爆破，提出了浅孔爆破与预裂爆破的方案，并就爆破参数、起爆网络、施工中的安全问题等进行了计算和分析。 相似文献
5.
付迎春 《石家庄铁路职业技术学院学报》2010,9(3):6-10
隧道在爆破过程中对地表建筑物的影响很大,对其危害往往估计不足,从单个炮孔地表水平和竖向震速对比、地层弹性模量的变化对爆破震速的影响分析、岩石容重对爆破震速的影响分析、炮孔埋深对爆破震速的影响分析等几方面进行阐述,从中得出一些基本规律,对实际工程提供一些借鉴。 相似文献
6.
104国道马鞍山路堑开挖中深孔控制爆破工程中，针对其复杂的爆破环境，采用预裂爆破、孔内分层微差与孔间微差等爆破技术，确保边坡稳定及周围环境的安全，取得了预想的爆破效果。 相似文献
7.
结合工程实例,总结了人工挖孔桩爆破成孔技术的设计方法和安全技术措施,以及给出了采用该方法的施工效果. 相似文献
8.
惠振浩 《彭城职业大学学报》2004,19(2):9-11
徐州皇城大厦桩基工程——人工挖孔嵌岩桩在基岩爆破施工时，发生井下塌方，造成施工困难。对此，根据工程地质和现场施工情况，对爆破后的基岩进行护壁，从而消除了井下塌方事故，使工程得以顺利进展。 相似文献
9.
结合遵义市新蒲新区水银山采石场开采的工程实例,探讨如何在大体积山体露天深孔爆破中应用施工技术参数,增加一次爆破量、控制安全飞石距离并且最大限度降低大块率,以达到既安全施工,又能有效降低综合爆破成本,提高机械化施工装运效率和社会经济效益。 相似文献
10.
章春宁 《黎明职业大学学报》2013,(1):84-88
根据勐野江水电站隧洞围岩岩体类别差异性大的特殊地质条件,采用工程类比和现场试验法,研究复杂地质条件下隧洞光面爆破的爆破参数、炮孔布置、装药结构、起爆网路、施工方案及处理措施.研究结果表明,在复杂地质条件下进行洞室开挖,只要选择正确的爆破参数和合理的施工方法也可以取得良好的爆破效果. 相似文献
11.
文章基于MATLAB神经网络工具箱平台,利用BP神经网络建立炸药岩石匹配模型,并根据工程实践中收集的数据和文献中的经典数据作为网络模型的学习训练和检验样本,从岩石爆破特性和爆破效果等因素出发来预测炸药爆炸特性和爆破设计参数,并结合某工程实例数据为输入值对模型进行检验,得到输出值预测误差均在10%以下,仿真效果较好。证明本模型对工程爆破实践有一定的指导意义和参考价值,并为炸药岩石匹配问题的研究提供了较好的思路。 相似文献
12.
An explosive blast mitigation alternative has increased the safety of structures by using "catcher" systems.These systems " catch" or repel the failure of the window or in-fill wall protecting life and property from ballistic shards or fragments.They can be designed to be standalone in new construction and structural retrofits or used to augment structural hardening techniques.Cables,fabrics,and thin gauge sheet steel are examples of catcher systems used in the past.A new and evolving category of catcher systems are based on polymeric materials that can be used for both wall and window upgrades.These products are a proven blast mitigation concept and K&C Protective Technologies Pte Ltd (KCPT) together with Sherwin-Williams(SW) use KCPT's blast engineering capacity and SW's material engineering principles to create engineered systems for even greater in-use performance. 相似文献
13.
LI Xiudi ZHENG Yingren 《天津大学学报(英文版)》2006,12(B09):177-181
In order to define the loading on protective doors of an underground tunnel, the exact knowledge of the blast propagation through tunnels is needed. Thirty-three scale high-explosive tests are conducted to obtain in-tunnel blast pressure for detonations external, internal and at the tunnel entrance. The cross section of the concrete model tunnel is 0.67 m^2. Explosive charges of TNT, ranging in mass from 400 g to 4 600 g, are detonated at various positions along the central axis of the model tunnel. Blast gages are flush-installed in the interior surface of the tunnel to record side-on blast pressure as it propagates down the tunnel. The engineering empirical formulas for predicting blast peak pressure are evaluated, and are found to be reasonably accurate for in-tunnel pressure prediction. 相似文献
14.
In order to define the loading on protective doors of an underground tunnel, the exact knowledge of the blast propagation through tunnels is needed. Thirty-three scale high-explosive tests are conducted to obtain in-tunnel blast pressure for detonations external, internal and at the tunnel entrance. The cross section of the concrete model tunnel is 0.67 m2. Explosive charges of TNT, ranging in mass from 400 g to 4 600 g, are detonated at various positions along the central axis of the model tunnel. Blast gages are flush-installed in the interior surface of the tunnel to record side-on blast pressure as it propagates down the tunnel. The engineering empirical formulas for predicting blast peak pressure are evaluated, and are found to be reasonably accurate for in-tunnel pressure prediction. 相似文献
15.
Many engineering materials demonstrate dynamic enhancement of their compressive strength with the increase of strain-rate, which have been included in material models to improve the reliability of numerical simulations of the material and structural responses under impact and blast loads. The strain-rate effects on the dynamic compressive strength of a range of engineering materials which behave in hydrostatic-stress-sensitive manner were investigated. It is concluded that the dynamic enhancement of the compressive strength of a hydrostatic-stress-sensitive material may include inertia-induced lateral confinement effects, which, as a non-strain-rate factor, may greatly enhance the compressive strength of these materials. Some empirical formulae based on the dynamic stress-strain measurements over-predict the strain-rate effects on the compressive strength of these hydrostatic-stress-sensitive materials, and thus may over-estimate the structural resistance to impact and blast loads, leading to non-conservative design of protective structures. 相似文献
16.
To effectively reduce the damage to people and devices in civil defense engineering subjected to blast shock, a blast shock isolation system with magnetorheological fluid dampers (MRFD) is proposed. MRFD can provide continuously adjustable Coulomb friction and has many advantages for semi-active control. Numerical simulation of this isolation system is finished using Matlab simulink toolbox. General semi-active control algorithms are consided based on instantaneous optimal active control algorithm. And the results indicate that the shock isolation system can work efficiently, decreasing about 93% of the peak acceleration of the isolation floor. 相似文献
17.
变频调速技术是一项高效节能技术。本文通过工程改造实例，详细介绍炼铁高炉冲渣水系统变频技术改造的情况。从技术上分析，满足其安全可靠的生产：r-E要求；从改造前后的数据统计分析，这项改造对节约能源，特别是电能，具有重要的现实意义。 相似文献
18.
针对在某化工厂由富水断层破碎带和淤泥质软土组成的复杂地基中施工人工挖孔桩时。所遇到的孔壁坍塌、流砂（土）、掉块及有害气体伤害等工程问题,采用了桩孔超前疏水、钢筋栅栏、钢模护筒、井底灌浆护壁及鼓风换气等处理措施,取得了较好的治理效果,确保了桩基工程的顺利完成。 相似文献
19.
根据高炉TRT工艺和影响高炉顶压稳定的因素,以及对高炉TRT系统的管路分析,建立高炉顶压TRT系统数学模型。应用Matlab对静叶单独调节高炉顶压时系统的数学模型进行仿真验证,为进一步改善高炉顶压的稳定提供理论依据。 相似文献