浅谈科学技术及理论在桥梁设计施工中的应用

介绍了科学技术及理论在桥梁设计尤其在施工方面的应用,重点阐述了地质探测、GPS、火箭抛送先导索等现代科学技术在地质状况复杂的条件下的优势,同时借助实例阐述了施工过程中关于结构锚杆和围岩注浆以及主缆索股成盘放索工艺等。     

煤巷锚网支护在益新煤矿的应用与发展

本文简述了鹤岗矿业集团益新煤矿在煤巷锚网支护方面经历的几个阶段,和现阶段的应用l睛况,探索煤巷锚网支护的发展方向。     

高切坡超前支护锚杆作用机制研究

本文根据超前支护锚杆的受力特点,对高切坡超前支护锚杆的作用机制问题进行了研究,为超前支护锚杆的设计提供依据,进而为推广高切坡超前支护的设计理论提供技术支撑。     

锚杆锚索联合支护在回采巷道中的应用及前景

巷道支护是煤炭开采中一项关键技术,合理、安全、可靠的巷道支护技术是实现矿井高产高效的必备条件,特别是回采巷道由于受到二次采动影响的特殊性,对其支护方式的研究具有更重要的意义。     

特厚三软全煤巷道快速掘进实践及优化

特厚三软煤层巷道快速掘进实践具有较强的推广应用价值和施工工艺技术含量,本人通过对靖远煤业集团水头煤矿的特厚三软煤层巷道掘进回顾总结出了特厚三软煤层全煤巷道快速掘进的实践经验,具有一定的推广价值。     

玻璃钢锚杆支护技术在中泰公司的应用

通过施工工艺、安全技术措施的介绍及对施工时现场管理进行总结,为玻璃钢锚杆支护工艺在中泰公司的进一步推广奠定基础,逐步在中泰公司实现煤巷全部采用玻璃钢锚杆支护。     

Deformation mechanism of high-stress and broken-expansion surrounding rock and supporting optimization based on the gray correlation theory

Aiming at the large deformation and support problems of high-stress and broken-expansion surrounding rock, and taking 1 000 m level roadway of Mine II in Jinchuan as the research object, an investigation on the deformation and damage of roadway surrounding rock and an analysis of its mechanism were carried out. The gray correlation theory was used in support scheme optimization design. First, causes and mechanism of deformation of the 1 000 m horizontal transport channel were analyzed through field investigation, laboratory test and data processing methods. We arguued that poor engineering geological conditions and deep pressure increases were the main factors, and the deformation mechanism was mainly the ground deformation pressure. Second, the gray correlation theory was used to construct supporting optimization decision method in the deep roadway. This method more comprehensively considers various factors, including construction, costs, and supporting material functions. The combined support with pre-stressed anchor cables, shotcrete layer, bolt and metal net was put forward according to the actual roadway engineering characteristics. Finally, 4 support schemes were put forward for new roadways. The gray relational theory was applied to optimizing the supporting method, undertaking technical and economic comparison to obtain the correlation degree, and accordingly the schemes were evaluated. It was concluded as follows： the best was the flexible retaining scheme using the steel strand anchor; the second best was the one using plate anchors on the top and rigid common screw steel bolt on the two sides; the ttiird was; the rigid common screw steel bolt in full section of roadway; and the worst is the planished steel rigid support. The optimized scheme was applied to the 1000 m level of new excavation roadway. The results show that the roadway surrounding rock can reach a stable state after 5 to 6 months monitoring, with a convergence rate less than 1 mm/d.     

锚杆在高层建筑基坑支护施工中应用

综述了锚杆技术的作用机理,并论述了锚杆施工工艺及质量控制要点,最终列举了施工中易发生的质量问题及相应解决措施     

锚杆施工在高速公路边坡中的应用

本文通过结合某高速公路施工实例,结合当前锚喷边坡防护在高速公路中应用情况,提出对该项目采取喷锚加固边坡形式,详细地提出了喷锚加固高速公路边坡的施工工艺,同时针对各个施工环节提出其质量控制措施,总结喷锚施工经验,为同行提供有价值的参考实例。     

公路路堑边坡破坏类型与支护设计

公路路堑边坡稳定性问题己成为制约工程进度,影响运营的关键问题,占据了大量的工程费用,面对复杂的地质条件和施工环境,许多公路的开挖都存在边坡变形破坏和支护,根据实际情况需采用不同的防护类型。本文通过对路堑边坡的特征研究,采用定性分析与定量评价相结合,总结多种支护方案以及使用条件,通过工程实例说明路堑边坡的特点以及支护选择。