采用恒阻锚索进行沿空留巷补强支护的试验与应用

Experiment and Application of Constant-resistance Anchored Rope in Supplement Support for Gob-side Entry Retaining

通过对华润大宁302大采高工作面3201巷局部区段引进恒阻锚索进行沿空留巷补强支护的试验与研究,成功实现了3201巷在一次采全高工作面动压影响下沿空巷道的留设与维护,有效解决了采用普通锚索+木垛联合补强支护所产生的技术难题及瓦斯致灾因素,验证了厚煤层一次采全高条件下采用恒阻锚索进行沿空留巷支护补强的理论与实践在安全上的可靠性、技术上的可行性、经济上的合理性,对地质条件、回采工艺相似的矿井具有借鉴意义。

In the part region of 3201 roadway of 302 large-mining-height working face in Huaren Daning Energy Co., Ltd., constant-resistance anchored rope was introduced in the experiment to study the supplement support for gob-side entry retaining. The study has realized the retaining and maintaining of the entry in the influence of dynamic pressure of large-mining-height working face, has solved the technical problems and gas hazard factors caused by the combined support with conventional anchor cable and wood cribs, and has verified security reliability, technology feasibility, and economy rationality of the constant-resistance anchored rope in the supplement support under the condition of full-seam mining in thick seam, which is useful for the similar mines in terms of geological condition and mining techniques.