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进一步掌握沿空掘巷围岩控制技术.以枣泉煤矿12203工作面为研究对象,通过理论计算与数值模拟相结合的方法,确定窄煤柱的宽度为6 m,以沿空掘巷围岩大、小结构的稳定性为理论基础,认为解决沿空巷道围岩稳定问题必须使得围岩小结构与其外部大结构保持相互协调,而保持小结构的稳定性是沿结果表明:空掘巷稳定的根本,根据围岩强度强化理论,采用高强度高预应力锚网索联合支护,并在窄煤柱侧进行注浆加固.经过现场工业性试验,该方法能够有效控制巷道的变形,实现该类巷道的稳定.
And further grasp the surrounding rock control technology of roadway driving alongside.The 12203 working face of Zaoquan coal mine is taken as the research object and the width of the narrow coal pillar is determined to be 6m by theoretical calculation and numerical simulation. Large and small structural stability as the theoretical basis, that the settlement of the surrounding rock along the roadway stability problems must make the small rock surrounding the structure with its large external coordination to maintain the stability of small structures along the results show that: According to the strength strengthening theory of surrounding rock, high-strength and high-prestressed anchor-net combined support is used and the grouting reinforcement is carried out on the side of narrow coal pillar.Through field test, this method can effectively control the deformation of the roadway and achieve The stability of this type of roadway.