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我队施工的大湖峪矿区，地下水相当丰富，给施工带来了许多困难，在施工过程中，我们采取了一系列的组织和技术措施，克服了许多困难，达到了地质目的，取得了一些有益的经验和教训。一、矿区地层水文情况及对钻进工作的影响该区位于小秦岭北矿带的中部。施工地层为古老的变质片麻岩、花岗岩、混合伟晶岩等。由于构造影响，地层复杂。F1、F5、F6断层为本区主要控矿构造带，裂隙发育，岩性多变，岩石物理机械性质
The Dahuyu Mining Area under construction by our team is rich in groundwater and brings many difficulties to the construction. During the construction, we have adopted a series of organizational and technical measures to overcome many difficulties, achieve geological objectives and achieve some benefits Experience and lesson. First, the strata hydrological conditions and the impact of drilling work The area is located in the northern part of the Qinling Mountains in the middle. The construction strata are ancient metamorphic gneiss, granite, mixed pegmatite and so on. Strata are complex due to tectonic effects. The F1, F5 and F6 faults are the major ore-controlling tectonic belts in this area, with the development of fissures, varied lithologies and petrophysical properties