建筑物下压煤条带煤柱巷柱式加固技术及应用

发布时间：2018-05-24 08:20

本文选题：开采沉陷 + 条带开采　；参考：《金属矿山》2017年10期

【摘要】：为了提高条带开采的采出率,可采取巷柱式加固煤柱、减小留宽的方法。通过数值模拟分析,揭示了巷柱式条带煤柱可以优化条带开采方案和煤柱加固方案,研究结果表明煤柱加固能减少留设煤柱的宽度,提高条带开采采出率。结合国内某矿特殊的地质采矿条件和巷柱式煤柱加固思想,在试验区采用拱棚木垛联合加固技术,木垛与棚架组成的巷柱式加固宽度1.5 m,间距2 m。通过井下煤柱位移监测和地表变形监测数据分析可知,井下巷柱式加固体最大竖向位移为361 mm,地表最大下沉值217 mm。煤柱加固有效地防止煤壁的破坏,地表变形得到了一定的控制,确保了建(构)筑物的安全使用。因此,巷柱式煤柱加固思想能为建筑物下采煤提供重要的途径和借鉴。
[Abstract]:In order to improve the extraction rate of strip mining, the method of reinforcing coal pillar with roadway pillar and reducing the width of coal pillar can be adopted. Through numerical simulation and analysis, it is revealed that the roadway pillar type strip pillar can optimize the strip mining plan and the coal pillar reinforcement scheme. The research results show that the coal pillar reinforcement can reduce the width of the remaining coal pillar and increase the strip mining recovery rate. Combined with the special geological and mining conditions of a certain mine in China and the idea of coal pillar reinforcement with roadway pillar, the combined reinforcement technology of arch shed and wooden pile is adopted in the test area. The width of the pillar reinforcement is 1.5 m, and the spacing is 2 m, which is composed of wood stack and scaffold. Through the data analysis of underground coal pillar displacement monitoring and surface deformation monitoring, it can be seen that the maximum vertical displacement of underground roadway column plus solid is 361 mm, and the maximum subsidence value of surface is 217 mm. The reinforcement of coal pillar effectively prevents the destruction of coal wall, and the surface deformation is controlled to ensure the safe use of the building. Therefore, the reinforcement idea of roadway pillar coal pillar can provide an important way and reference for coal mining under building.
【作者单位】：中国矿业大学(北京)地球科学与测绘工程学院;湖南科技大学地理空间信息技术国家地方联合工程实验室;开滦集团有限责任公司;
【基金】：国家自然科学基金项目(编号:51574242);国家自然科学基金青年科学基金项目(编号:51604108)
【分类号】：TD823.83

【相似文献】