What the data for this category looks like
The main sources of coal mining production business process documents are coal mine safety regulations released by the National Energy Administration, internal enterprise operating procedures, daily shift inspection records, business approval documents, and mining area ledgers. Safety regulations and operating procedures are updated alongside policy revisions. Daily inspection logs are generated daily per shift. Approval documents are created in real time as business processes run.
Document structures include fixed-numbered clauses, structured tables such as inspection logs, and process sheets with approval nodes. Fields include professional business information such as gas concentration (unit %LEL), temperature (unit ℃), working face number, and approval status.
Constraints Imposed on Document Parsing and Chunking by These Characteristics
The structured nature of coal mining business documents requires that chunking does not interrupt professional business logic. For example, do not split a single shift’s inspection records into separate chunks, and do not split consecutive approval nodes on a single approval sheet.
Inspection logs have varied table formats. Parsing must preserve values and units within cells to avoid losing valid business parameters. Large regulation files have long parsing times, so longer timeout thresholds must be supported. Additionally, different document types (regulations, inspection records, approval sheets) have significant format differences, so custom chunking rules must be supported to adapt to various document structures.
Reference only; verify against the target FastGPT release and deployment documentation.
How to Configure the Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Adapts to the length of single inspection log entries and single clauses in coal mining regulations, preserving complete business information |
chunkSplitter | Split by chapter + clause + business node | Matches the chapter, clause numbering, and approval node structure of coal mining documents, avoiding splitting content across logical boundaries |
customPdfParse | Enabled | Adapts to most coal mining documents which are scanned or officially formatted, preserving table and professional field structures to avoid losing parsed parameters |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Adapts to the parsing time of large coal mining regulation files and batch aggregated inspection log files, avoiding parsing timeout failures |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Allows uploading large aggregated coal mining business files, adapting to batch inspection data upload requirements |
chunkSettingMode | Manual configuration | Adapts to format differences across multiple types of coal mining business documents, enabling flexible adjustment of chunking rules |
Three Common Mistakes
- Uploaded Excel inspection log files show no search results after parsing, with a parsing error displayed in the interface. The cause is that the
customPdfParseconfiguration is not enabled, which fails to recognize structured inspection parameters in Excel tables, leading to loss of valid business fields during chunking. - Specific approval node information cannot be retrieved after chunking, with search results only showing scattered text. The cause is that
chunkSplitteris configured to split by fixed length, breaking the consecutive approval node logic of the approval sheet, causing node information to be scattered across multiple chunks and unable to be fully matched. - After updating FastGPT to v4.17.0, the document parsing function entry cannot be found. The cause is that some industry-specific parsing functions are only displayed after being enabled via configuration items, and are not shown by default.
How to Verify the Configuration is Set Correctly
- Upload a single coal mine inspection log Excel file, review the parsed chunked content to confirm that professional business fields such as shift, location, and gas concentration are preserved.
- Access the knowledge base search test interface, enter "working face gas concentration", and confirm that the corresponding parameters and units are included in the chunked content.
- Upload a large coal mine regulation PDF file under 1000 MB, wait for parsing to complete, and check the task status to confirm no timeout failure is triggered.
- Modify the
chunkSizeconfiguration value, re-upload a single regulation document, and verify that the content length after chunking matches the adjusted expectation.
The values provided are common starting points and should be measured against applicable samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.