赤峪矿高水材料沿空留巷技术研究

发布时间：2018-06-16 08:26

本文选题：高水材料 + 沿空留巷　；参考：《河北工程大学》2015年硕士论文

【摘要】：本论文是以赤峪矿C0202工作面为背景进行的研究。由于煤层赋存和地质条件的原因,赤峪矿C0202综采工作面回风巷需要保留风巷,并具有地应力大、顶板厚等特有地质条件。保留风巷、断面较大、切顶困难、地质情况复杂是赤峪矿C0202综采工作面回风巷留巷的技术难点。本文通过0202工作面特定地质条件下的巷旁充填体的变形、巷道顶板变形、矿压的数值模拟及现场观测分析,提出了几种不同沿空留巷的方案及措施研究,同时希望研究探索出一条在不同地质条件下高水材料巷旁充填应用的成功经验。针对C0202工作面的特殊地质情况本课题共提出四种留巷方案:方案一:原位沿空留巷;方案二:半原位沿空留巷;方案三:破底半原位沿空留巷。方案四:不破底沿空留巷。对上述四种方案进行分别进行数值模拟、理论分析。综合分析、比较各方案中充填体的垂直及水平应力与位移、煤壁的所承受的应力及变形,然后通过数据对比各个方案的留巷效果并结合实际工程需要,最终确定最适合的留巷方案。本课题的研究结果将在很大程度上解决了因工作面高应力、高瓦斯、回风巷断面大等特殊地质情况导致沿空留巷巷道变形较大,支护难度和支护成本增加的问题。这一技术的成功应用不仅使煤炭资源回收率低这一现状得到很大改观,同时还减少了区段回采巷道的掘进工程量、掘进费用等,与此同时工作面接替紧张的诸多问题也得到了解决。
[Abstract]:This paper is based on the background of Chiyu Coal Mine C0202 face. Due to the occurrence of coal seam and geological conditions, the return air roadway of C0202 fully mechanized mining face in Chiyu Coal Mine needs to retain wind roadway, and has special geological conditions such as large ground stress, thick roof and so on. Retention of wind roadway, large section, difficult roof cutting and complicated geological conditions are the technical difficulties in the entry of C0202 fully-mechanized mining face in Chiyu Coal Mine. Based on the numerical simulation and field observation analysis of roadway side fill deformation, roadway roof deformation and mine pressure under the specific geological conditions of 0202 face, this paper puts forward several schemes and measures for different gob-side roadway retention. At the same time, we hope to explore a successful application of high water material side filling under different geological conditions. In view of the special geological conditions of C0202 face, this paper puts forward four kinds of roadway retention schemes: scheme one: in situ along the gob, scheme 2: half in situ along the gob, and scheme 3: break the bottom and half in situ along the gob. Plan four: do not break the bottom along the roadway. The above four schemes are simulated and analyzed theoretically. Through comprehensive analysis, the vertical and horizontal stresses and displacements of the filling body in each scheme, the stress and deformation of the coal wall are compared, and then the roadway retention effect of each scheme is compared by the data and combined with the actual engineering needs. Finally determine the most suitable roadway plan. The research results of this paper will solve the problems of large deformation of roadway along goaf, difficulty of support and increase of supporting cost due to the special geological conditions such as high stress, high gas and large section of return air roadway. The successful application of this technology not only improves the present situation of low recovery rate of coal resources, but also reduces the amount of tunneling and the cost of excavation. At the same time, the face to replace the tension of a number of problems have also been resolved.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353

【参考文献】