工程测量
一、测量基础 | Surveying Fundamentals
二、测量点与标志 | Survey Points & Markers
三、测量仪器 | Surveying Instruments
四、测量术语 | Surveying Terminology
五、测量操作 | Surveying Operations
六、施工放样 | Construction Stakeout
Control Survey and Construction Stakeout
Sun, before you start the foundation stakeout for the substation, I want to verify your control network. Show me the control points.
孙工，在你们开始升压站基础放样之前，我想验证一下控制网。给我看看 控制点。
孙工: Sure, Kevin. We established four primary control points — CP1 through CP4 — around the site perimeter. They're concrete monuments with brass caps, coordinates tied to the state plane coordinate system.
好的，Kevin。我们沿现场边界设了四个主控制点——CP1到CP4。是带铜帽 的混凝土标石，坐标关联到了国家平面坐标系。
Here's the coordinate list: CP1 (Northing: 3,845,200.500, Easting: 1,256,400.300, Elevation: 100.250). All four points were established by static GPS observation — 2-hour sessions, post-processed with the CORS network.
这是坐标清单：CP1（北坐标：3,845,200.500，东坐标：1,256,400.300， 高程：100.250）。四个点全部通过GPS静态观测建立——2小时观测时段，用 CORS站网后处理。
What's your horizontal accuracy?
水平精度是多少？
孙工: Horizontal closure is 1:15,000 — well within the 1:10,000 spec for this type of project. Vertical closure is 3 millimeters over the loop. I have the adjustment report right here.
水平闭合差是1:15,000——远在这个类型项目1:10,000的指标范围内。垂直 闭合差环线3毫米。平差报告就在这儿。
OK, I'll spot-check CP2 with our total station. (sets up and measures) ... Difference is 4 mm in easting, 3 mm in northing. Acceptable. You're good.
好，我用我们全站仪抽检CP2。（架设、测量）……东坐标差4毫米，北坐标 差3毫米。可以接受。没问题。
孙工: 好，现在开始放线。Xiao, set up the total station at CP2. Backsight to CP1. We're staking out the four corners of the main transformer foundation.
OK, now let's start the layout. Xiao, set up the total station at CP2. Backsight to CP1. 我们要放出主变压器基础的四个角。
小肖: Station set up and leveled. Backsight to CP1: horizontal angle 0°00'00", distance 86.450 meters. Checks with the known distance — 86.448 meters. Difference is 2 mm. Acceptable.
全站仪架好整平了。后视CP1：水平角0°00'00"，距离86.450米。与已知 距离86.448米核对。差2毫米。可以接受。
孙工: Good. Now stake out Point A — Northing 3,845,180.000, Easting 1,256,420.000. That's the southwest corner.
好。现在放样A点——北坐标3,845,180.000，东坐标1,256,420.000。那是 西南角。
小肖: (measuring to the point) Point A marked. I'm driving a wooden stake with a PK nail in the top. Writing the point ID and elevation on the stake.
（测到点位）A点标记好了。我打一个木桩，顶上钉PK钉。在桩上写点号 和高程。
孙工: Now the other three corners. The foundation is 12 meters by 8 meters. Xiao, stake out B (northeast corner), then C and D.
好，剩下三个角。基础尺寸12米×8米。小肖，放样B点（东北角），然后 C和D。
小肖: All four corners staked. I'll run a string line around the perimeter so the excavation crew can see the outline.
四个角全部放样完成。我沿边界拉一圈线，让开挖班组能看清轮廓。
孙工: Offset stakes at 2 meters outside each corner too — those won't be lost during excavation.
每个角外面2米再打偏移桩——开挖的时候这些桩不会丢。
Let me verify the diagonal distances. By calculation, the diagonal should be sqrt(12² + 8²) = 14.422 meters.
我核对一下对角线。按计算，对角线应该是sqrt(12² + 8²) = 14.422米。
(measures with tape) Diagonal A to B is 14.423 meters. B to D is 14.420 meters. Both within 3 mm of theoretical. Layout is approved.
（用钢尺量）A到B对角线14.423米。B到D对角线14.420米。两者与理论值 差在3毫米以内。放样批准。
孙工: Thanks, Kevin. I'll prepare the stakeout report and have it signed off. Excavation can start tomorrow.
谢谢Kevin。我准备放样报告签字。明天可以开始开挖。
Solar Farm — PV Mounting Structure Stakeout
Zhao, we're about to stake out the first 100 piles for the single-axis tracker foundations in Block 3. This is a high- precision job — the tolerance is really tight. Walk me through your plan.
赵工，我们要开始放样第三区单轴跟踪支架基础的第一个100根桩了。这是 高精度工作——公差要求非常严。给我讲讲你们的方案。
赵工: We're using RTK GPS for primary positioning, then cross-checking with the total station. Each pile has X, Y, Z coordinates in the design file. The tracker manufacturer provided a CSV file with all pile coordinates — there are 2,800 piles total in Block 3.
我们用RTK GPS做初步定位，然后用全站仪交叉校核。每根桩在设计文件里 都有XYZ坐标。跟踪支架厂家提供了所有桩坐标的CSV文件——第三区总共有 2,800根桩。
Horizontal tolerance is ±15 mm in X and Y. Vertical tolerance is ±10 mm in elevation. That's tighter than typical civil work — this is more like machine foundation precision.
水平公差XY方向±15毫米。高程公差±10毫米。这比常规土建要严——差不多 是设备基础级别的精度了。
Right. And if the piles are out of tolerance, the tracker torque tube won't align, and the whole row is compromised. How are you ensuring accuracy?
对。如果桩超差了，跟踪支架的扭矩管就对不上，整排就废了。你怎么确 保精确度？
赵工: We installed a local base station for the RTK — it's on a known control point that we verified this morning. The RTK gives us real-time positioning to within about 8 mm horizontal. Then we re-check every 5th pile with the total station.
我们架了一个本地基站给RTK用——放在一个已知控制点上，今早验证过。 RTK给我们实时定位精度大约水平8毫米。然后每5根桩用全站仪复核。
Technician, set up the total station at CP-3 and shoot the first 5 pile locations we staked with RTK.
技术员，把全站仪架在CP-3上，把我们用RTK放样的前5根桩位测一遍。
技术员: (measuring) Pile P3-001: ΔX = +5 mm, ΔY = -3 mm, ΔZ = +2 mm. Pile P3-002: ΔX = +8 mm, ΔY = +6 mm, ΔZ = -4 mm. Pile P3-003: ΔX = -2 mm, ΔY = +11 mm, ΔZ = +1 mm.
（测量）桩P3-001：ΔX = +5毫米，ΔY = -3毫米，ΔZ = +2毫米。 桩P3-002：ΔX = +8毫米，ΔY = +6毫米，ΔZ = -4毫米。 桩P3-003：ΔX = -2毫米，ΔY = +11毫米，ΔZ = +1毫米。
赵工: All within tolerance. P3-003 Y is 11 mm off — that's getting close to the 15 mm limit. Let me mark that one for extra attention when they drill.
全部在公差内。P3-003的Y方向差了11毫米——有点接近15毫米的限值了。 这个我标记出来，钻孔时特别注意。
Good catch. What about the row alignment? Each tracker row is 90 meters long. If the first pile is off by a few millimeters, by the end of the row the cumulative error could push you out of tolerance.
提得好。排对齐呢？每排跟踪支架长90米。如果第一根桩偏了几毫米，到 排尾累积误差就可能让你超差了。
赵工: That's why we stake out the two end piles of each row first, then use the total station to establish the alignment, and then stake the intermediate piles along that line. We don't just stake each pile independently — that would compound errors.
所以每排我们先放两头桩，然后用全站仪定出对齐线，再沿这条线放中间 桩。我们不是每根桩独立放——那样会累积误差。
Smart. OK, I'm satisfied with the procedure. I'll do random spot checks as you go. Make sure every pile is marked with its pile ID and design elevation.
聪明。好，我对方案满意了。你们边做我边随机抽检。确保每根桩都标记 了桩号和设计高程。
赵工: Will do. Technician, let's pick up the pace — we've got 100 piles to stake today and 2,700 more after that!
好的。技术员，我们加快速度——今天要放100根桩，后面还有2,700根呢！