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论文中文题名:

 采煤工作面顺槽底板特征分析及快速硬化技术研究    

姓名:

 张志梁    

学号:

 201109431    

保密级别:

 公开    

学科代码:

 085213    

学科名称:

 建筑与土木工程    

学生类型:

 工程硕士    

学位年度:

 2014    

院系:

 建筑与土木工程学院    

专业:

 建筑与土木工程    

研究方向:

 岩土工程加固理论与技术    

第一导师姓名:

 陈新年    

第一导师单位:

 西安科技大学    

第二导师姓名:

 徐拴海    

论文外文题名:

 Study on Feather Analysis and Rapid Hardening Technology in the Floor of Roadways in Coal Face    

论文中文关键词:

 顺槽底板 ; 加筋格室 ; 填充材料 ; 承载力 ; 快速硬化    

论文外文关键词:

 Floor of Roadways ; Geocell Reinforced ; Filler material ; Carrying Capacity ; Rapid    

论文中文摘要:
针对采煤工作面顺槽底板采用传统的普通混凝土硬化方式普遍存在施工速度慢、运输量大、成本高,混凝土硬化质量差以及底板路面在使用过程中破坏后维修难的问题,开展顺槽底板快速硬化技术的相关研究,主要工作和结论有: (1)在分析采煤工作面顺槽底板特征、硬化存在的问题及硬化技术要求的基础上,通过对目前国内外格室加筋、柔性混凝土及碾压混凝土等关键技术的研究,结合块体路面的结构设计方法,提出加筋格室及内部填充材料组成的顺槽底板路面的结构形式。 (2)格室加筋碾压混凝土复合路面的承载机理与与传统水泥混凝土路面主要依靠路面板抗弯强度承载和沥青混凝土路面主要靠基层承载有本质区别,其路面结构的承载机理是通过块体之间的拱效应、接缝的剪切特性来实现荷载的扩散,提高路面的抗剪强度及变形适应的能力。 (3)通过对不同类型的加筋格室的力学特性及加固作用机理(侧向约束作用、摩擦作用、网兜效应)分析,指出其力学特性与其结构有关,焊距越小、高度越高、结构层强度越高,其侧向约束力越大,侧壁摩擦力也越大,网兜效应及加筋效果越好。 (4)试验研究确定了满足各项性能要求的填充材料配合比。通过单体加筋格室充填体及加筋格室充填结构体承载板力学变形试验研究,进一步验证了由于加筋格室的作用,在充填材料强度较低、路面厚度较小情况下其结构仍具有较高的承载力和适应较大变形能力且扩散到基层及周围的应力很小的路面承载机理。 (5)地面工业性模拟试验表明:各工序的衔接良好,施工速度比传统的提高4倍以上,承载力满足使用性能,在显著降低综合成本的同时且具有明显的社会效益,有较强的推广应用前景。
论文外文摘要:
In view of the mining face gateway floor adopts the traditional way of ordinary concrete hardening widespread construction speed is slow, large volume, high cost, poor quality of concrete hardening and floor pavement damage in the process of using, the difficulty of maintenance, carry out along the groove bottom rapid hardening technology of related research, the main work and conclusions are as follows: (1) Based on the analysis of the problems existing in the coal mining face gateway floor hardening and hardening, on the basis of technical requirements, Through the lattice room reinforcement at home and abroad, the study of the key technology such as flexible concrete and RCC, put forward the thickness is 130-150 mm, consist of reinforced lattice room and internal filling material along the groove bottom of pavement structure. (2) Lattice room load-bearing mechanism of roller compacted concrete composite pavement reinforcement and with traditional cement concrete pavement plate bending strength relies mainly on the pavement load and asphalt concrete pavement depend mainly on basic load has essential difference, the load-bearing mechanism of pavement structure is through the block between the arch effect and joint shear properties to realize the spread of the load, improve pavement shear strength and deformation of the adaptive ability. (3) Based on the mechanical properties of different types of reinforced lattice room and reinforcement mechanism (lateral restraint, and the roles of friction, a net effect) analysis, points out its mechanical characteristics and its structure, welding is smaller, the higher the height, the higher the strength of structure layer, the lateral restriction, the greater the wall friction is the greater the net effect and the better reinforcement effect. (4) Experimental study on determining the proportion of meet the performance requirements of filling materials. Reinforced by monomer, ventricular filling and reinforcement filling structure bearing plate mechanics deformation experiment research, further validated as a result of the action of reinforced lattice room, in the low strength of filling materials, pavement condition of less thickness of the structure still has high bearing capacity and the ability to adapt to the large deformation and spread to the grassroots and pavement bearing mechanism of the surrounding stress is small. (5) Industrial ground simulation test shows that the process goes on to the good, the construction speed is more than four times higher than that of the traditional, bearing capacity satisfy the use performance, while significantly reduce the comprehensive cost and has obvious social benefits, has the strong application prospects.
中图分类号:

 TD263    

开放日期:

 2014-06-12    

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