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实用新型
CN204126636U 一种隔水上向钻孔测压装置 失效 - 权利终止

一种隔水上向钻孔测压装置
摘要：
本实用新型公开了一种隔水上向钻孔测压装置，插设于上向钻孔中，包括测压仪器，测压仪器包括压力显示部及压力探测部；所述上向钻孔内同心设有用于将煤层含水围岩隔开的套管，上向钻孔底部同心开设有由煤层底板向煤层钻进形成的测气压室，压力探测部从套管中穿过，延伸至测气压室中。本实用新型通过套管将含水围岩与孔内测量空间隔开，从根源上将裂隙水与瓦斯测压空间阻断，减少水对测压钻孔的影响。
摘要（英）：

The utility model discloses a waterproof upward drill hole pressure-measuring device. The device is inserted into an upward drill hole and comprises a pressure measuring instrument, and the pressure measuring instrument comprises pressure display parts and a press detection part. A sleeve is arranged coaxially inside the upward drill hole and used for separating the water-containing surrounding rock of a coal seam. A gas pressure measuring chamber is coaxially formed in the bottom of the upward drill hole through drilling from a coal seam floor to the coal seam. The pressure detection part penetrates through the sleeve and extends into the gas pressure measuring chamber. The water-containing surrounding rock is separated from measuring space inside the hole through the sleeve, in this way, crack water is fundamentally hindered from the gas pressure measuring space, and influences on the pressure measuring drill hole by the water are reduced.

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