A method for quickly estimating the distribution state of the in-situ stress field at any location in China
A technology of arbitrary location and distribution state, applied in the fields of hydrogeology and engineering investigation, it can solve the problem of engineering geologists spending a lot of manpower and material resources, and achieve the effect of easy to master analysis methods and flexible and simple methods.
Active Publication Date: 2021-08-27
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD +3
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Problems solved by technology
[0003] The existing methods for estimating the regional in-situ stress field may require engineering geologists to spend a lot of manpower and material resources to consult a large number of references, collect a large amount of regional geological data, and even use relatively expensive economic costs to do some on-site in-situ stress tests. Experiments, and then summarizing, can estimate the distribution state of the stress field in a certain area
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Embodiment 1
[0044] A large-scale water conservancy and hydropower project in Southwest China, such as Figure 4 As shown, it is necessary to estimate the distribution of the in-situ stress field in the field area, and the specific implementation steps are as follows:
[0045]1. According to the topographic map, get the approximate location information of the area, and get the latitude and longitude of the location: east longitude 101°51', north latitude 25°20'.
[0046] 2. According to the collected previous engineering data, the main lithology type is sandstone (according to claim 9, the rock type is "sedimentary rock and negative metamorphic rock"), and the uniaxial compressive strength is 80MPa, and the rock mass bulk density is 2.5KN / m 3 .
[0047] 3. Due to the incomplete data collected in the early stage, it is assumed that the weights of the ground stress measurement and the ground stress velocity are 0.5 and 0.5, respectively.
[0048] 4. Input the above information into the i...
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The invention discloses a method for quickly estimating the distribution state of the in-situ stress field at any position in China, including collecting publicly published data related to or reflecting the distribution characteristics of the in-situ stress field in China; It is divided into several sub-plates; according to the collected data, input the information of three aspects into the computer as the basis for quantitative evaluation; assume that two of the three principal stresses are near horizontal and one is near vertical, and the magnitude and direction of the ground stress are drawn up. Estimation method: According to the estimation method, according to the input parameter conditions, the computer background is based on the relevant measured statistical results, and at the same time, the influence of the surface motion velocity is considered, and the calculation query of the maximum principal stress orientation and the three principal stress sizes is performed. The present invention can estimate the state of the geostress field at the location by directly giving the latitude and longitude of the query location according to the previous geotectonic characteristics, surface movement and related stress test results in China.
Description
technical field [0001] The invention relates to a method for rapidly estimating the distribution state of an in-situ stress field at any position in China, belonging to the fields of hydrogeology and engineering survey. Background technique [0002] In the rock mass engineering industry, the distribution state of the initial in-situ stress field plays a decisive role in the technical links such as project site selection, underground cavern layout, and structural shape selection. In the pre-feasibility study stage of the project, or under the premise of lack of necessary and available data, if the distribution state of the in-situ stress field in the project site area can be easily estimated, it will undoubtedly have a very good guiding role in the decision-making of the project. . [0003] The existing methods for estimating the regional in-situ stress field may require engineering geologists to spend a lot of manpower and material resources to consult a large number of ref...
Claims
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IPC IPC(8): G06F16/29G06F16/245G06Q50/08
CPCG06F30/20G06F2119/06
Inventor 吴述彧朱焕春李鹏飞朱代强朱永生陈兵赵代尧易魁陈鸿杰肖明东
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD