无煤柱护巷支护技术提高资源回收率

论述了回采巷道的矿压显现规律。对沿空留巷顶板运动情况及支架性能进行了分析，选择了以高速速凝剂加灰渣的充填体作为巷旁支护，并对充填体试块进行了强度验算，说明了推无煤柱护巷是一项行之有效的重大技术措施，具有十分显著的技术和经济效益。

Improving Coal Recovery by Supports Technique of Protecting Road without Pillars

In this paper, laws of mining pressure appearance are discussed. Roof's movement characteristic and pillar performances is analyzed. In practice, the mixing filling materials of quickly-concreting reagent along with lime-ash are chosen as supporting system by the road. At the same time, strength of testing core from the filling materials is calculated and checked. We can make conclusion that the protecting road without pillars is an important and effective technical precaution and is deserved popularization. With this kind of technique, obvious effects of technology and economic can be obtained.