断层带和底板注浆模拟及其防水分析

发布时间：2018-06-15 05:16

本文选题：安全工程 + 断层　；参考：《安全与环境学报》2015年05期

【摘要】：考虑回采过程断层与工作面底板沟通裂隙对工作面采场底板突水的影响,对矿井9603工作面底板及断层采取注浆防水措施。为了准确分析注浆技术的效果,运用弹塑性本构模型、Drucker-Prager准则和ANSYS数值软件,分析了9603工作面在注浆前后不同推进距离下沿工作面走向的应变区域分布。结果表明,岩层应变总体规律为随工作面推进应变范围逐渐扩大,断层与底板之间裂隙沟通程度加强,且分布于开挖煤层两侧及断层带。注浆前,底板斜交及垂直裂隙与断层先存裂隙初步沟通发生于工作面推进80 m的位置,完全沟通发生在工作面推进100 m的位置;注浆后,由于岩层在凝固浆液的影响下,弹性模量大大降低,抗张拉强度得到加强,底板斜交及垂直裂隙与断层先存裂隙的初步沟通和完全沟通分别延至工作面推进120 m的位置和150 m的位置。
[Abstract]:Considering the influence of fracture communication between fault and face floor during mining process on water inrush of face floor, grouting waterproof measures are adopted for floor slab and fault of mine 9603 working face. In order to accurately analyze the effect of grouting technology, using the elastoplastic constitutive model, Drucker-Prager criterion and ANSYS numerical software, the distribution of strain region along the working face strike in 9603 face under different advance distance before and after grouting is analyzed. The results show that the general law of rock strain is that the strain range expands gradually with the advance of working face, the degree of communication between fault and floor is strengthened, and it is distributed on both sides of excavated coal seam and fault zone. Before grouting, the initial communication between the inclined bottom slab and the vertical fissure and the pre-existing fault fissure occurred in the position of working face advancing 80 m, and the complete communication occurred in the position of working face advancing 100 m, after grouting, because of the influence of solidification slurry, the rock layer was affected by solidification slurry. The elastic modulus is greatly reduced, the tensile strength is strengthened, and the initial communication and complete communication between the inclined bottom plate and the vertical fracture and the pre-existing fracture of the fault are extended to the position of 120 m and 150 m respectively.
【作者单位】：贵州工程应用技术学院矿业工程学院;辽宁工程技术大学安全科学与工程学院;
【基金】：贵州省科学技术基金项目(LKB[2012]03)
【分类号】：TD745

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