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DBT92-2022: Active fault survey--Drilling
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DBT92-2022: Active fault survey--Drilling

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ICS 91:120:25 CCSP15 Seismic Industry Standard of the People's Republic of China Active Fault Exploration Drilling Activefault survey-Driling Released on 2022-12-29 2023-05-01 Implementation Released by the China Earthquake Administration

table of contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Basic Regulations 2 5 Workflow 2 6 Technical preparation 4 7 On-site construction 4 8 Outcomes 8 Appendix A (Informative) Example of Drilling Layout by Folding Method 10 Appendix B (Informative) Core Catalog Table 13 Appendix C (Normative) Division and Classification of Detrital Sediments 14 Appendix D (informative) Example of determining fault activity parameters 16 Appendix E (Normative) Drilling Data Dictionary 18 Reference 24

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: This document is proposed by the China Earthquake Administration: This document is under the jurisdiction of the Earthquake Disaster Prevention Standardization Technical Committee: This document was drafted by: National Institute of Natural Disaster Prevention and Control, Ministry of Emergency Management (formerly Institute of Crustal Stress, China Earthquake Administration), China Earthquake Institute of Geology, China Earthquake Disaster Prevention Center, Institute of Earthquake Prediction, China Earthquake Administration, Earthquake Bureau of Ningxia Hui Autonomous Region, Disaster Prevention Technology college: The main drafters of this document: Zhang Shimin, Li An, Chai Chizhang, Yang Xiaoping, He Honglin, Tian Qinjian, Yu Guihua, Shen Jun, Ma Baoqi, Li Dewen, Li Feng, Liu Xudong, Ding Rui, Jiang Dawei:

Introduction

This document is one of the "Active Fault Exploration" series of standards: The structure and title of this series of standards are expected to be as follows: ---Active fault detection and remote sensing survey (DB/T 69-2017); --- Field Geological Survey for Active Fault Exploration (DB/T 82-2020); ---Active fault detection fault geomorphology measurement (DB/T 71-2018); --- Active Fault Exploration Paleoseismic Trench Exploration (DB/T 81-2020); ---Active fault exploration drilling; ---Active fault exploration age determination; ---Seismic exploration for active fault detection; --- Activity identification of active fault detection; ---Earthquake hazard assessment for active fault exploration; --- Graphical symbols for active fault detection (DB/T 72-2018); --- active fault detection database; --- Active fault detection database detection (DB/T 83-2020); ---Active fault exploration 1:250000 Seismic Tectonic Map Compilation (DB/T 73-2018); ---Rules for compiling reports on active fault exploration results; ---1:50000 active fault mapping (DB/T 53-2013); ---1:50000 active fault mapping database specification (DB/T 65-2016); A large number of earthquake cases at home and abroad show that active faults are the culprit of earthquake disasters: Identify the distribution of active faults and their properties and seismic hazards It is the basic work of earthquake prevention and disaster reduction to make an evaluation of the nature of the disaster: Since the "Ninth Five-Year Plan" period, my country has gradually promoted the detection of active faults: Mapping of more than 130 active faults has been completed, and active fault detection has been carried out in more than 100 cities: It is playing an increasingly important role in the fields of engineering site selection, fault avoidance of buildings (structures), earthquake prediction, and earthquake disaster risk assessment: In recent years, the seismic department has organized and carried out the combing of active fault detection technology, clarifying the basic principles of work process, work content and work results: this framework: In order to standardize and guide my country's active fault detection work and the application of its results, GB/T 36072-2018 "Active fault detection" was formulated: Layer Detection", this standard specifies the technical requirements for the work content, workflow, technical methods, data management, and output of active fault detection: Ask for a regulation: On this basis, further evaluate and analyze various technical methods to achieve the purpose of detection, and clarify their technical indicators and Data summary requirements, and a standard framework for active fault detection work was constructed: Drilling is the identification of fault activity, urban active fault detection, active fault One of the important methods of work such as filling maps: In order to ensure the quality of borehole detection work and standardize its investigation content, technical methods, and results presentation, a special Finalize this document: Active Fault Exploration Drilling

1 Scope

This document stipulates the drilling workflow, technical preparation, on-site construction and technology of results output in the detection of active faults: Require: This document is applicable to fault drilling for fault activity identification, active fault mapping, active fault survey, urban active fault detection, etc: hole detection:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 36072-2018 Active fault detection DB/T 65-2016 1:50000 active fault mapping database specification DB/T 72-2018 Graphical symbols for active fault detection DZ/T 0080-2010 Coal Geophysical Logging Specifications DZ/T 0227-2010 Geological Core Drilling Regulations

3 Terms and Definitions

The following terms and definitions apply to this document: 3:1 active fault activefault There have been active faults since 120,000 years ago, including late Pleistocene faults and Holocene faults: [Source: GB/T 36072-2018, 3:1] 3:2 buried fault A fault that is covered by a Quaternary system or body of water and has no traces on the surface: 3:3 The location of the fault apex that staggers the latest strata: [Source: GB/T 36072-2018,3:10] 3:4 Iconic strata markerbed A layer or a group of formations with obvious lithological characteristics, stable distribution, and can be used as a comparison mark: 3:5 A geological section constructed from multiple borehole strata: ...