Sensor Data, Depth to Water Table, Far North Queensland Rainforest SuperSite, Daintree Rainforest Observatory, Cape Tribulation, Bore 1, 2014

Bore 1 was drilled commencing 19th May 2008. Drilling was carried out using the rotary mud technique, the bore were installed as far into the forest as possible as the drill platform allowed. Drilling reached the watertable at ~10 m depth and bedrock at ~12 m depth. The drill hole was 200 mm diameter to 12m depth and then155 mm diameter to the bottom (14.2m). The casing used was UPVC PN12, 125 mm ID, from 0.30 m above ground to 14.2 m depth. Above ground the casing was enclosed in a steel tube (0.30m) with a lockable cap. The casing was slotted (1.2 mm) from 4.5 m to 14.2 m depth. There was no cap at the base (in rock). Filling: cement grout 0-2 m depth, drill cuttings 2-4 m depth, bentonite 4-4.5 m, gravel 4.5-12 m (rock), packer at 12m (top of rock), open hole 12-14.2 m. A water level logger was installed that logged data every 30 minutes during 2014.1号钻孔（Bore 1）于2008年5月19日开钻。本次钻井作业采用旋转泥浆钻井法实施，在钻井平台作业许可范围内，尽可能将钻孔布设至林区深处。钻井过程中，于约10米深度抵达地下水位（watertable），约12米深度抵达基岩（bedrock）。该钻孔孔径为200毫米，直至12米深度，随后扩孔至155毫米直至孔底（14.2米）。所用套管（casing）为UPVC PN12管，内径125毫米，布设范围为地面以上0.30米至14.2米深度。地面以上的套管封装于一段0.30米长的钢管内，并配有可上锁的孔盖。套管在4.5米至14.2米深度区间开设了1.2毫米的滤槽，孔底（位于岩层中）未加装孔盖。钻孔填充方案如下：0至2米深度采用水泥浆（cement grout）填充，2至4米深度采用钻屑（drill cuttings）填充，4至4.5米深度采用膨润土（bentonite）填充，4.5至12米（岩层段）采用砾石填充；12米深度（基岩顶面）设有封隔器（packer），12至14.2米深度为裸孔段。2014年期间，安装了水位记录仪（water level logger），每30分钟记录一次监测数据。