【作者】 于飞；

【导师】 温兴林；

【作者基本信息】 山东科技大学 ， 采矿工程， 2011， 硕士

【摘要】 我国煤炭资源虽然分布广泛,但煤炭资源正在逐步枯竭,矿井储量正在逐步减少,建筑物下、水体下、铁路下压煤量大,随着开采深度的增加,煤炭资源开采面临受水威胁等不利影响,因此,为更多开发利用现有资源,解放建筑物下压煤和受水威胁的煤炭资源已是当务之急。论文基于淄博矿业集团岱庄煤矿1160采区开采所面临的建筑物压煤和承压水威胁的主要问题,根据采区的基本情况、水文地质特征等,分析采区开采的可行性及重要性。通过理论公式推导计算、地表下沉预计等手段分析建筑物下条带开采尺寸；并通过对底板突水机理研究,对底板受力进行分析,结合“下三带”理论及采区实际水文地质条件,分析底板阻水性、底板破坏深度,得出底板隔水层厚度及特性。根据岩体水力学法,把底板看成力学岩梁,来分析底板承压水与采宽的关系,并根据组合梁理论计算出承压水上条带开采的安全留宽。为选择出适合两种条件的最佳条带开采方案,本文通过数值模拟软件针对不同条带开采方案分别从煤柱稳定性、地表下沉、底板塑性破坏等方面进行动态模拟,分析不同条带开采煤柱塑性破坏情况、地表垂直位移情况、底板塑性区、底板应力分布、底板位移的不同,以确定合理的条带尺寸。最后,根据建筑物下、承压水上条带开采合理尺寸的理论分析结果,结合数值模拟结论,以地面建筑物及承压水上开采的安全性为前提,充分考虑采出率,确定出合理的条带方案,最大限度的解放受影响的煤炭资源。这种综合分析确定条带开采参数的方法,具有较高的可靠性和较好的应用价值,为其它类似地质和开采条件的矿区回收资源提供了重要的参考价值。更多还原

【Abstract】 Though the coal resource is widely distributed in our country, it is becoming exhausted. Nonetheless, when the coal reserves of mines is reducing gradually, the amount of coal under buildings, water and railways is still great. With the increase of the mining depth, the exploration of the coal resources faces negative effects from that such as water, etc. Therefore, for a better development and utilization of existing resources, it is the time to liberate the coal resources under buildings and threatened by water.Based on the main problems about that the coal is under the buildings and the mining is threatened by water, the basic situation and the hydrological geology characteristics of working area 1160 of DaiZhuang coal mine of ZiBo mining group, this article analyzes the feasibility and the importance of mining exploitation. With the theoretical formula and predicting the surface subsidence, it analyzes the size of strip mining under buildings. Second, with the mechanism of water inrush through bottom, it researches the stress of the floor. With the "down three zones" theory the thesis analyzes the water-borne resistance characters of bottom and the depth of floor destroyed, combining with the actual hydrogeology conditions of the working area, and obtains the thickness and characters of the water-resisting layer who lays the foundation for analyzing the reasonable mining size above confined water. In the end, according to the research method of rock mass hydraulics, it regards bottom plate as mechanics rock beam to analyze the relationship between confined water of floor and the mining width, then uses floor beams theory to calculate the safe retaining width of strip mining above confined water. In order to choose a better scheme about strip mining to meet the two conditions, through numerical simulation software, according to different mining schemes, this article makes dynamic simulation from various aspects, such as pillar stability, surface subsidence, floor plastic damage and so on, to analyze the plastic damage situation of different strip mining coal pillars, the surface vertical displacement situation, and the difference between the damage, the stress, and the displacement, then ultimately it confirms a reasonable strip size.In the end, according to the results of theoretical analysis in the text about reasonable mining size of strip mining both under buildings and above confined water, combining with the numerical simulation conclusion, taking the safety of buildings and mining above confined water as the prerequisite, fully considering the mining rate, then it formulates a rational strip mining scheme to liberate the influenced coal resources maximumly. The comprehensive analytical method to confirm the parameters has high reliability and good application value, so the dissertation has very important reference value to the other mining areas which are in similar geological and mining conditions.更多还原