嵩明台地应力仪的实测能力与深井水位干扰

观测应力场的变化是预报地震较直接的途径之一。由于地下岩石介质力学性质及元件受力状态的复杂性，压磁式地应力测试系统能否测到地下应力的变化，是这种测量方法的核心问题之一。涉及到它在地震探索中的观测研究价值。嵩明台电感地应力观测装置，能感受到距测孔１００米处抽水的影响。本文的分析表明，电感应力观测装置在满足规范要求时，能测到地应力场的变化，不失为一种较好的方法。最后给出了消除抽水干扰的方法。

PRACTICAL OBSERVATION ABILITY OF STRESSMETERINSTALLED AT SONGMING STATION AND WATER LEVELDISTURBANCE OF DEEP WELL

Observing changes of stress field is one of the dirrect ways predicting earthquake. Because of complexity of rock mechanical property and forecd element state, whether stress variation can be observed by piezo-magnetic stressmeter or not is one of the core problems of this observation method, which involves its value in earthquake studies.The observation equipment with inductance type installed at Songming station is sensitive to the water-pumping influence 100 meters away. This paper indicates that the inductance equipment, a good method, is able to measure the stress changes according to the request of observation regulations. a technique for removing water-pumuing disturbance has been presented.