唐家会煤矿首采面地表移动变形规律分析

发布时间：2018-01-09 19:33

本文关键词：唐家会煤矿首采面地表移动变形规律分析　出处：《安徽理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着东部矿区资源的日益衰竭,煤炭西进战略已经实施,西部矿区地下资源开采造成的地裂缝灾害越发引起人们的注意。西北部的矿区具有基岩厚,地形起伏较大,厚松散层薄等特点,地表移动变形规律比较复杂,地裂缝在地质采矿环境及地形地貌条件的双重胁迫作用,发育规律比较复杂。首先在唐家会煤矿61101首采面地表建立移动变形观测站。利用GPS静态相对定位方法、三等水准测量方法、GNSS RTK方法对地表进行移动观测站前期的水准连接测量及首次全面观测。而在数据处理方面,利用HGO或者TGO、MISPAS软件包对GPS静态数据进行基线解算和高程、水准数据进行解算和处理；计算地表移动变形量并绘制变形曲线；对地表移动变形过程中的动态参数进行求取,包括启动距、下沉曲率、最大下沉速度滞后距与最大下沉滞后角等,分析地表移动变形规律。本文针对西北部黄土沟壑区采动地裂缝的灾害,在现场实测的基础上,基于开采沉陷学理论,山坡坡体滑移理论,研究了采动地裂缝的发育带来的地表移动变形规律。以所在高原地带唐家会煤矿为研究对象,在61101首采面建立了地表移动站,研究了开采过程中处于采空区地表塌陷最为严重区域处的地裂缝的位置以及对地裂缝裂缝角的求取,并对各种地裂缝的位置、属性进行定性和定量的分析。(1)结合开采沉陷学理论,揭示了不同类型采动地裂缝的力学机理,根据形成机理可分为拉伸式地裂缝、隆起式地裂缝、塌陷式地裂缝、滑动型地裂缝等4种类型。根据发育时间可分为发育时期的临时性地裂缝和地表稳沉后的永久性地裂缝。求取了拉伸式地裂缝的超前距与超前角、隆起式地裂缝的滞后距与滞后角、滑坡式地裂缝的裂缝距与裂缝角以及所有地裂缝的裂缝距与裂缝角；(2)研究了西北部黄土沟壑区采动地裂缝的影响要素。采用现场实测和测量所得的实验数据,分析了地裂缝发育位置、裂缝宽度、裂缝距、裂缝角与61101首采面回采速度、地表监测点水平移动量、下沉量以及地形地貌等因素之间关系。
[Abstract]:With the increasing depletion of mining resources in the east, the strategy of coal westward advance has been implemented, and the ground fissure disaster caused by underground resources mining in the western mining area has attracted more and more attention. The mining area in the northwest of China has thick bedrock. The terrain undulation is big, the thick loose layer is thin and so on, the surface movement deformation law is quite complex, the ground fissure in the geology mining environment and the topography geomorphology condition dual stress action. The law of development is complicated. First of all, a moving deformation observation station is established on the surface of 61101 mining faces in Tangjiahui Coal Mine. The GPS static relative positioning method and the third grade leveling method are used. The GNSS RTK method is used to measure the leveling connection and the first overall observation of the ground surface in the early stage of moving observation station. In the aspect of data processing, HGO or TGO are used. The MISPAS software package carries on the baseline solution and the elevation to the GPS static data, the leveling data carries on the solution and the processing; Calculate the surface movement and deformation and draw the deformation curve; The dynamic parameters in the process of surface movement and deformation are obtained, including starting distance, subsidence curvature, maximum subsidence velocity lag distance and maximum subsidence lag angle and so on. This paper aims at the disaster of mining ground fissures in the loess gully region of northwest China, based on the field measurement, mining subsidence theory and slope slip theory. This paper studies the law of surface movement and deformation caused by the development of mining ground fissure. Taking Tangjiahui coal mine on the plateau as the research object, the surface moving station has been established in 61101 mining faces. This paper studies the location of the ground fissure in the most serious area of the ground collapse in the goaf and the calculation of the angle of the fissure in the mining process, and the location of all kinds of ground fissures. Qualitative and quantitative analysis of attributes. 1) combined with mining subsidence theory, the mechanical mechanism of different types of mining ground fractures is revealed. According to the formation mechanism, they can be divided into extensional ground fractures and uplift ground fractures. Collapsing ground fissures. According to the development time, it can be divided into temporary ground fractures and permanent ground fractures after ground stabilization. The advance distance and leading angle of tensile ground fractures are obtained. The lag distance and the lag angle of the uplift ground fracture, the crack distance and the angle of the landslide type ground crack, and the crack distance and the crack angle of all the ground fractures; The influence factors of mining ground fissures in the loess gully region of northwest China are studied. The location, width and distance of the ground fissures are analyzed by using the experimental data obtained from the field measurements and measurements. The relationship between the fracture angle and the recovery speed of 61101 mining faces, the horizontal movement of surface monitoring points, the amount of subsidence, the topography and geomorphology, etc.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD325

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