The characteristics of damage, movement, evolution in mining coal bed in weathered zone were discussed mainly.
重点论述了风化带内煤层开采的覆岩破坏移动演化特征；
In shallow weathered zone, the main part of fissure water is recently infiltrated water and the water mixed with "old water".
浅部风化裂隙水主要为新近入渗水及与“老水”的混合水。
Analyze bedrock for construction weathered feature at Jixian Power Plan, make weathered zone classification, and apply to pile foundation engineering design.
分析蓟县电厂基岩构造风化的特征，进行了风化带的划分，并应用于桩基工程设计。
Water leakage from the reservoirs mainly follows the passage, which is formed by connection of the fracture structure outward extending with the strongly weathered zone.
库水外渗主要沿通往库外的断裂构造与强风化带连通形成的渗漏通道渗漏。
The surrounding rock of the entry in strongly weathered zone has more fissures which lower the rock strength, and the maximum roadway dimension will be limited consequently.
强风化带中的回采巷道，围岩裂隙增多、强度降低，巷道的最大尺寸将受到限制。
The surrounding rock of the entry in strongly weathered zone has more fissures which lower the rock strength, and the maximum roadway dimension will be limited consequently.
强风化带中的回采巷道，围岩裂隙增多、强度降低，巷道的最大尺寸将受到限制。
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